/* ═══════════════════════════════════════════════════════
   SmartBoard AI — style.css  ·  Egytronic · Yousef Khamis
   Academic Modern UI — 2026
═══════════════════════════════════════════════════════ */

/* ── Variables ── */
:root {
  --bg:        #f0f4ff;
  --surface:   #ffffff;
  --surface2:  #f5f7ff;
  --border:    #dde4f8;
  --accent:    #3b5bdb;
  --accent2:   #7c3aed;
  --accent3:   #06b6d4;
  --green:     #10b981;
  --red:       #ef4444;
  --orange:    #f59e0b;
  --text:      #1a2040;
  --text2:     #4a5675;
  --text3:     #8a9bb5;
  --sh-sm:     0 2px 10px rgba(59,91,219,.08);
  --sh:        0 4px 24px rgba(59,91,219,.12);
  --sh-lg:     0 12px 48px rgba(59,91,219,.18);
  --r:         16px;
  --canvas-bg: #f8faff;
  --node-bg:   #eef2ff;
  --node-bdr:  #c7d2fe;
  --sb-w:      230px;
}
[data-theme="dark"] {
  --bg:        #0d1117;
  --surface:   #161b27;
  --surface2:  #1d2438;
  --border:    #2a3450;
  --text:      #e4ecff;
  --text2:     #9badd0;
  --text3:     #4d6080;
  --sh-sm:     0 2px 10px rgba(0,0,0,.3);
  --sh:        0 4px 24px rgba(0,0,0,.5);
  --sh-lg:     0 12px 48px rgba(0,0,0,.7);
  --canvas-bg: #0d1117;
  --node-bg:   #1d2438;
  --node-bdr:  #2a4878;
}

/* ── Reset ── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;overflow:hidden;}
body{font-family:'Tajawal',sans-serif;background:var(--bg);color:var(--text);transition:background .25s,color .25s;}
::-webkit-scrollbar{width:5px;height:5px;}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px;}
button,input,select,textarea{font-family:'Tajawal',sans-serif;}
.hidden{display:none!important;}


/* ═══════════════════════════════════════
   LANDING PAGE
═══════════════════════════════════════ */
#landing {
  position:fixed;inset:0;z-index:9999;
  background:linear-gradient(135deg,#060d2e 0%,#0f1f5c 40%,#1a237e 70%,#1565c0 100%);
  overflow-y:auto;overflow-x:hidden;
  display:flex;align-items:center;justify-content:center;
  min-height:100vh;
}
.ld-bg{position:fixed;inset:0;pointer-events:none;z-index:0;}
.ld-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.18;animation:orbF 10s ease-in-out infinite alternate;}
.ld-o1{width:560px;height:560px;background:#3b5bdb;top:-150px;right:-150px;}
.ld-o2{width:440px;height:440px;background:#7c3aed;bottom:-120px;left:-120px;animation-delay:3s;}
.ld-o3{width:320px;height:320px;background:#06b6d4;top:45%;left:45%;transform:translate(-50%,-50%);animation-delay:6s;}
@keyframes orbF{from{transform:translateY(0) scale(1);}to{transform:translateY(-40px) scale(1.1);}}
.ld-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:60px 60px;
}

.ld-wrap{
  position:relative;z-index:1;
  display:flex;align-items:center;gap:48px;
  width:min(1100px,96vw);padding:40px 20px;
  min-height:100vh;
}

/* Left branding */
.ld-left{flex:1;min-width:0;color:#fff;}
.ld-brand-badge{
  display:inline-flex;align-items:center;gap:9px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:50px;padding:8px 20px;margin-bottom:28px;
  font-size:10px;letter-spacing:2.5px;text-transform:uppercase;color:rgba(255,255,255,.55);
}
.ld-dot{width:8px;height:8px;border-radius:50%;background:#10b981;animation:pulse 2s infinite;}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(16,185,129,.5);}50%{box-shadow:0 0 0 8px rgba(16,185,129,0);}}
.ld-title{
  font-family:'Cairo',sans-serif;
  font-size:clamp(42px,6.5vw,80px);font-weight:800;line-height:1.05;
  margin-bottom:16px;text-shadow:0 0 60px rgba(80,120,255,.4);
}
.ld-title em{font-style:normal;}
.ld-grad{
  background:linear-gradient(90deg,#60a5fa,#a78bfa,#34d399);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.ld-sub{font-size:clamp(14px,2.2vw,18px);color:rgba(255,255,255,.5);line-height:1.7;margin-bottom:28px;max-width:480px;}
.ld-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.ld-pill{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:20px;padding:7px 16px;font-size:13px;color:rgba(255,255,255,.7);
  display:flex;align-items:center;gap:8px;
}
.ld-pill i{color:#60a5fa;}
.ld-ministry{
  display:flex;align-items:center;gap:10px;
  background:rgba(16,185,129,.08);border:1px solid rgba(16,185,129,.2);
  border-radius:12px;padding:11px 16px;font-size:12px;color:rgba(255,255,255,.5);
  margin-bottom:20px;
}
.ld-ministry i{color:#10b981;}
.ld-credit{font-size:11px;color:rgba(255,255,255,.22);letter-spacing:2px;text-transform:uppercase;}

/* Auth Card */
.ld-right{flex:0 0 420px;min-width:0;}
.auth-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.11);
  border-radius:24px;padding:32px;backdrop-filter:blur(24px);
  box-shadow:0 40px 100px rgba(0,0,0,.45);
  width:100%;
}
.ac-head{display:flex;align-items:center;gap:14px;margin-bottom:24px;}
.ac-logo{
  width:46px;height:46px;border-radius:14px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:22px;flex-shrink:0;
}
.ac-title{font-size:18px;font-weight:800;color:#fff;}
.ac-sub{font-size:12px;color:rgba(255,255,255,.45);}

.lang-bar{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap;}
.lang-pill{
  flex:1;min-width:60px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:20px;padding:8px 6px;color:rgba(255,255,255,.6);
  font-size:12px;font-weight:600;cursor:pointer;transition:all .2s;white-space:nowrap;
  font-family:'Tajawal',sans-serif;
}
.lang-pill:hover,.lang-pill.active{background:rgba(59,91,219,.35);border-color:#3b5bdb;color:#fff;}

.role-row{display:flex;gap:8px;margin-bottom:20px;}
.role-btn{
  flex:1;background:rgba(255,255,255,.05);border:1.5px solid rgba(255,255,255,.1);
  border-radius:14px;padding:12px 6px;text-align:center;cursor:pointer;
  transition:all .2s;color:rgba(255,255,255,.55);
}
.role-btn:hover,.role-btn.active{background:rgba(59,91,219,.28);border-color:#3b5bdb;color:#fff;}
.role-btn i{display:block;font-size:20px;margin-bottom:6px;}
.role-btn span{font-size:11px;font-weight:600;}

.auth-tabs{display:flex;background:rgba(0,0,0,.25);border-radius:12px;padding:4px;margin-bottom:20px;}
.auth-tab{flex:1;padding:10px;border-radius:9px;border:none;background:transparent;color:rgba(255,255,255,.4);font-size:13px;font-weight:600;cursor:pointer;transition:all .2s;font-family:'Tajawal',sans-serif;}
.auth-tab.active{background:rgba(59,91,219,.55);color:#fff;}

.auth-form{display:flex;flex-direction:column;gap:14px;}
.field-group{display:flex;flex-direction:column;gap:5px;}
.field-group label{font-size:11px;color:rgba(255,255,255,.5);font-weight:600;display:flex;align-items:center;gap:6px;}
.field-group label i{font-size:10px;}
.field-group input,.field-group select{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);
  border-radius:11px;padding:12px 14px;color:#fff;font-size:14px;outline:none;
  transition:border .2s;font-family:'Tajawal',sans-serif;
}
.field-group input:focus,.field-group select:focus{border-color:rgba(59,91,219,.7);background:rgba(59,91,219,.08);}
.field-group input::placeholder{color:rgba(255,255,255,.2);}
.field-group.dark input,.field-group.dark select{
  background:var(--surface2);border:1.5px solid var(--border);
  color:var(--text);border-radius:11px;padding:11px 14px;font-size:14px;outline:none;
}
.field-group.dark label{color:var(--text2);font-size:12px;font-weight:600;}
.field-group.dark input::placeholder{color:var(--text3);}

.btn-primary{
  background:linear-gradient(135deg,#3b5bdb,#7c3aed);border:none;border-radius:12px;
  padding:13px;color:#fff;font-size:14px;font-weight:700;cursor:pointer;
  box-shadow:0 6px 24px rgba(59,91,219,.38);transition:all .2s;
  font-family:'Tajawal',sans-serif;display:flex;align-items:center;justify-content:center;gap:8px;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 32px rgba(59,91,219,.48);}
.btn-ghost{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:12px;padding:12px;color:rgba(255,255,255,.55);
  font-size:13px;cursor:pointer;transition:all .2s;font-family:'Tajawal',sans-serif;
  display:flex;align-items:center;justify-content:center;gap:8px;
}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;}
.auth-or{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.2);font-size:12px;}
.auth-or::before,.auth-or::after{content:'';flex:1;height:1px;background:rgba(255,255,255,.1);}
.auth-footer{text-align:center;font-size:11px;color:rgba(255,255,255,.22);margin-top:6px;display:flex;align-items:center;justify-content:center;gap:6px;}

/* Responsive landing */
@media(max-width:768px){
  #landing{align-items:flex-start;justify-content:center;}
  .ld-wrap{flex-direction:column;gap:24px;padding:24px 16px;min-height:auto;}
  .ld-left{text-align:center;}
  .ld-pills{justify-content:center;}
  .ld-right{flex:none;width:100%;}
  .ld-title{font-size:clamp(36px,10vw,56px);}
  .auth-card{padding:24px 20px;}
}
@media(max-width:400px){
  .ld-title{font-size:32px;}
  .auth-card{padding:20px 16px;}
  .role-btn{padding:10px 4px;}
  .role-btn i{font-size:17px;}
}


/* ═══════════════════════════════════════
   APP SHELL
═══════════════════════════════════════ */
#app{display:flex;flex-direction:column;position:fixed;inset:0;}
#home{display:flex;height:100%;overflow:hidden;}

/* ── Sidebar ── */
.sidebar{
  width:var(--sb-w);flex-shrink:0;
  background:var(--surface);border-left:1px solid var(--border);
  display:flex;flex-direction:column;height:100%;
  transition:transform .3s ease;z-index:100;
  box-shadow:var(--sh);
}
.sb-brand{
  display:flex;align-items:center;gap:12px;
  padding:20px 18px 16px;border-bottom:1px solid var(--border);
}
.sb-brand-icon{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;
}
.sb-brand-name{font-size:16px;font-weight:800;color:var(--text);}
.sb-brand-name em{font-style:normal;color:var(--accent);}

.sb-nav{flex:1;padding:12px 10px;overflow-y:auto;display:flex;flex-direction:column;gap:3px;}
.sb-item{
  display:flex;align-items:center;gap:12px;padding:11px 12px;
  border-radius:12px;color:var(--text2);font-size:14px;font-weight:500;
  cursor:pointer;text-decoration:none;transition:all .18s;
}
.sb-item:hover{background:var(--surface2);color:var(--text);}
.sb-item.active{background:linear-gradient(135deg,rgba(59,91,219,.12),rgba(124,58,237,.08));color:var(--accent);font-weight:700;}
.sb-item.active i{color:var(--accent);}
.sb-item i{width:18px;text-align:center;font-size:15px;color:var(--text3);}
.sb-sep{height:1px;background:var(--border);margin:8px 0;}

.sb-footer{padding:14px 12px;border-top:1px solid var(--border);}
.sb-user-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.sb-av{
  width:34px;height:34px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.sb-user-info{min-width:0;flex:1;}
.sb-user-info span:first-child{display:block;font-size:13px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.sb-role-tag{font-size:10px;background:rgba(59,91,219,.1);color:var(--accent);padding:2px 8px;border-radius:10px;font-weight:600;}
.sb-foot-btns{display:flex;gap:6px;}
.sb-foot-btns button{
  flex:1;background:var(--surface2);border:1px solid var(--border);
  border-radius:9px;padding:8px;color:var(--text2);cursor:pointer;font-size:13px;transition:all .18s;
}
.sb-foot-btns button:hover{background:var(--border);color:var(--text);}
.sb-foot-btns button.sb-logout:hover{background:rgba(239,68,68,.1);color:var(--red);}
.sb-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:99;backdrop-filter:blur(3px);}

/* ── Mobile bar ── */
.mob-bar{
  display:none;align-items:center;gap:12px;
  padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:50;
}
.mob-menu{background:none;border:none;color:var(--text);font-size:20px;cursor:pointer;padding:4px;}
.mob-logo{flex:1;font-size:15px;font-weight:800;color:var(--text);}
.mob-logo i{color:var(--accent);}
.mob-act{background:none;border:none;color:var(--text2);font-size:17px;cursor:pointer;}

@media(max-width:768px){
  .sidebar{position:fixed;top:0;right:0;bottom:0;transform:translateX(100%);width:260px;}
  .sidebar.open{transform:translateX(0);}
  .sb-overlay.hidden{display:none!important;}
  .mob-bar{display:flex;}
  .home-main{overflow-y:auto;}
}

/* ── Home Main ── */
.home-main{
  flex:1;min-width:0;overflow-y:auto;
  background:var(--bg);
}
.home-sec{padding:28px 32px;}
@media(max-width:600px){.home-sec{padding:16px;}}

/* ── Home Hero ── */
.home-hero{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent2) 100%);
  border-radius:20px;padding:28px 32px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:20px;margin-bottom:24px;
}
.home-hero-txt h1{font-size:clamp(20px,4vw,28px);font-weight:800;margin-bottom:4px;}
.home-hero-txt p{font-size:14px;opacity:.75;}
.home-stats{display:flex;gap:20px;flex-wrap:wrap;}
.hs{text-align:center;}
.hs span{display:block;font-size:24px;font-weight:800;line-height:1;}
.hs small{font-size:11px;opacity:.7;margin-top:2px;display:block;}

/* ── Quick Actions ── */
.quick-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:28px;}
@media(max-width:700px){.quick-actions{grid-template-columns:repeat(2,1fr);}}
.qa-card{
  background:var(--surface);border:1.5px solid var(--border);border-radius:16px;
  padding:18px 12px;display:flex;flex-direction:column;align-items:center;gap:9px;
  cursor:pointer;transition:all .2s;font-family:'Tajawal',sans-serif;
}
.qa-card:hover{transform:translateY(-3px);box-shadow:var(--sh);}
.qa-card i{font-size:22px;}
.qa-card span{font-size:12px;font-weight:700;color:var(--text2);}
.qa-blue{border-color:rgba(59,91,219,.25);}
.qa-blue i{color:var(--accent);}
.qa-blue:hover{border-color:var(--accent);background:rgba(59,91,219,.04);}
.qa-green{border-color:rgba(16,185,129,.25);}
.qa-green i{color:var(--green);}
.qa-green:hover{border-color:var(--green);background:rgba(16,185,129,.04);}
.qa-purple{border-color:rgba(124,58,237,.25);}
.qa-purple i{color:var(--accent2);}
.qa-purple:hover{border-color:var(--accent2);background:rgba(124,58,237,.04);}
.qa-orange{border-color:rgba(245,158,11,.25);}
.qa-orange i{color:var(--orange);}
.qa-orange:hover{border-color:var(--orange);background:rgba(245,158,11,.04);}

/* ── Section Header ── */
.sec-hdr{margin-bottom:18px;}
.sec-hdr h2{font-size:18px;font-weight:800;color:var(--text);display:flex;align-items:center;gap:10px;}
.sec-hdr p{font-size:13px;color:var(--text3);margin-top:4px;}

/* ── Boards Grid ── */
.boards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;}
.board-card{
  background:var(--surface);border:1.5px solid var(--border);border-radius:16px;
  padding:20px;cursor:pointer;transition:all .22s;position:relative;overflow:hidden;
}
.board-card::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  opacity:0;transition:opacity .2s;
}
.board-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--accent);}
.board-card:hover::before{opacity:.04;}
.board-card .bc-icon{font-size:28px;margin-bottom:10px;display:block;}
.board-card h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:4px;}
.board-card p{font-size:11px;color:var(--text3);}
.board-card .bc-badge{
  display:inline-block;font-size:10px;background:rgba(59,91,219,.1);color:var(--accent);
  padding:2px 8px;border-radius:8px;margin-top:8px;font-weight:600;
}
.new-card{
  border:2px dashed var(--border);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:10px;min-height:130px;
  color:var(--text3);
}
.new-card:hover{border-color:var(--accent);color:var(--accent);background:rgba(59,91,219,.03);}
.new-card i{font-size:28px;}
.new-card span{font-size:13px;font-weight:600;}

/* ── Dropzone ── */
.dropzone{
  background:var(--surface);border:2px dashed var(--border);border-radius:18px;
  padding:40px 24px;text-align:center;cursor:pointer;transition:all .2s;margin-bottom:20px;
}
.dropzone:hover,.dropzone.drag-over{border-color:var(--accent);background:rgba(59,91,219,.03);}
.dropzone i{font-size:40px;color:var(--accent);margin-bottom:12px;display:block;}
.dropzone h4{font-size:16px;font-weight:700;color:var(--text);margin-bottom:6px;}
.dropzone p{font-size:12px;color:var(--text3);}
.datasets-list{display:flex;flex-direction:column;gap:10px;}
.ds-item{
  background:var(--surface);border:1px solid var(--border);border-radius:12px;
  padding:14px 16px;display:flex;align-items:center;gap:12px;
}
.ds-item i{color:var(--green);font-size:18px;flex-shrink:0;}
.ds-item-name{flex:1;font-size:13px;font-weight:600;color:var(--text);}
.ds-item-size{font-size:11px;color:var(--text3);}


/* ═══════════════════════════════════════
   CURRICULUM PICKER (LESSON MODAL)
═══════════════════════════════════════ */
.lesson-modal-overlay{
  position:fixed;inset:0;z-index:9000;
  background:rgba(0,0,0,.55);backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;padding:16px;
}
.lesson-modal{
  background:var(--surface);border-radius:24px;
  width:min(780px,100%);max-height:92vh;
  display:flex;flex-direction:column;overflow:hidden;
  box-shadow:0 40px 100px rgba(0,0,0,.4);
}
.lm-header{
  display:flex;align-items:center;gap:14px;
  padding:20px 24px;border-bottom:1px solid var(--border);
  background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;
  flex-shrink:0;
}
.lm-header-icon{font-size:26px;}
.lm-header-txt h2{font-size:18px;font-weight:800;margin-bottom:2px;}
.lm-header-txt p{font-size:12px;opacity:.7;}
.lm-close{margin-right:auto;background:rgba(255,255,255,.15);border:none;color:#fff;
  width:32px;height:32px;border-radius:50%;font-size:16px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;}
.lm-close:hover{background:rgba(255,255,255,.25);}

/* Steps bar */
.lm-steps{
  display:flex;align-items:center;padding:16px 24px;
  border-bottom:1px solid var(--border);gap:0;flex-shrink:0;background:var(--surface2);
}
.lm-step{
  display:flex;align-items:center;gap:8px;flex:1;
  font-size:12px;font-weight:600;color:var(--text3);position:relative;
}
.lm-step-num{
  width:26px;height:26px;border-radius:50%;border:2px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;
  background:var(--surface);color:var(--text3);flex-shrink:0;transition:all .2s;
}
.lm-step.done .lm-step-num{background:var(--green);border-color:var(--green);color:#fff;}
.lm-step.active .lm-step-num{background:var(--accent);border-color:var(--accent);color:#fff;}
.lm-step.active{color:var(--accent);}
.lm-step-line{flex:1;height:2px;background:var(--border);margin:0 6px;transition:background .2s;}
.lm-step.done .lm-step-line,.lm-step.active .lm-step-line{background:var(--accent);}

/* Step content */
.lm-body{flex:1;overflow-y:auto;padding:24px;}
.lm-step-pane{display:none;}
.lm-step-pane.active{display:block;}

.lm-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
.lm-grid-4{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;}
@media(max-width:500px){.lm-grid-3{grid-template-columns:1fr;}.lm-grid-4{grid-template-columns:repeat(2,1fr);}}

.lm-opt{
  background:var(--surface2);border:2px solid var(--border);border-radius:16px;
  padding:18px 14px;text-align:center;cursor:pointer;transition:all .2s;
}
.lm-opt:hover{border-color:var(--accent);background:rgba(59,91,219,.04);transform:translateY(-2px);}
.lm-opt.selected{border-color:var(--accent);background:rgba(59,91,219,.08);box-shadow:0 0 0 3px rgba(59,91,219,.12);}
.lm-opt-icon{font-size:28px;margin-bottom:8px;display:block;}
.lm-opt-name{font-size:13px;font-weight:700;color:var(--text);}
.lm-opt-sub{font-size:11px;color:var(--text3);margin-top:3px;}

.lm-grade-opt{
  background:var(--surface2);border:2px solid var(--border);border-radius:14px;
  padding:14px 10px;text-align:center;cursor:pointer;transition:all .2s;
}
.lm-grade-opt:hover{border-color:var(--accent);transform:translateY(-2px);}
.lm-grade-opt.selected{border-color:var(--accent);background:rgba(59,91,219,.08);}
.lm-grade-num{font-size:22px;font-weight:800;color:var(--accent);display:block;}
.lm-grade-lbl{font-size:10px;color:var(--text3);margin-top:2px;}

.lm-subject-opt{
  background:var(--surface2);border:2px solid var(--border);border-radius:14px;
  padding:16px 12px;cursor:pointer;transition:all .2s;
  display:flex;align-items:center;gap:12px;
}
.lm-subject-opt:hover{border-color:var(--accent);}
.lm-subject-opt.selected{border-color:var(--accent);background:rgba(59,91,219,.08);}
.lm-subj-icon{font-size:22px;width:36px;height:36px;border-radius:10px;background:rgba(59,91,219,.1);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.lm-subj-name{font-size:13px;font-weight:700;color:var(--text);}
.lm-subj-topics{font-size:10px;color:var(--text3);margin-top:2px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

.lm-term-opt{
  background:var(--surface2);border:2px solid var(--border);border-radius:14px;
  padding:18px;text-align:center;cursor:pointer;transition:all .2s;
}
.lm-term-opt:hover{border-color:var(--accent);transform:translateY(-2px);}
.lm-term-opt.selected{border-color:var(--accent);background:rgba(59,91,219,.08);}
.lm-term-icon{font-size:30px;margin-bottom:8px;display:block;}
.lm-term-name{font-size:14px;font-weight:800;color:var(--text);}
.lm-term-range{font-size:11px;color:var(--text3);margin-top:3px;}

.lm-lesson-opt{
  background:var(--surface2);border:2px solid var(--border);border-radius:14px;
  padding:14px 16px;cursor:pointer;transition:all .2s;
  display:flex;align-items:flex-start;gap:12px;
}
.lm-lesson-opt:hover{border-color:var(--accent);}
.lm-lesson-opt.selected{border-color:var(--accent);background:rgba(59,91,219,.08);}
.lm-lesson-num{
  min-width:28px;height:28px;border-radius:8px;background:var(--accent);
  color:#fff;font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.lm-lesson-title{font-size:13px;font-weight:700;color:var(--text);margin-bottom:3px;}
.lm-lesson-desc{font-size:11px;color:var(--text3);}

.lm-source-badge{
  background:rgba(16,185,129,.08);border:1px solid rgba(16,185,129,.2);
  border-radius:10px;padding:10px 14px;margin-bottom:20px;
  display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text2);
}
.lm-source-badge i{color:var(--green);}

/* Bottom bar */
.lm-footer{
  padding:16px 24px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-shrink:0;
  flex-wrap:wrap;background:var(--surface2);
}
.lm-sel-summary{font-size:12px;color:var(--text2);flex:1;}
.lm-sel-summary strong{color:var(--accent);}
.lm-foot-btns{display:flex;gap:10px;}
.lm-back-btn{
  background:var(--surface);border:1.5px solid var(--border);border-radius:11px;
  padding:10px 20px;font-size:13px;font-weight:600;color:var(--text2);cursor:pointer;
  font-family:'Tajawal',sans-serif;transition:all .2s;
}
.lm-back-btn:hover{border-color:var(--accent);color:var(--accent);}
.lm-next-btn{
  background:linear-gradient(135deg,var(--accent),var(--accent2));border:none;
  border-radius:11px;padding:10px 24px;font-size:13px;font-weight:700;
  color:#fff;cursor:pointer;font-family:'Tajawal',sans-serif;transition:all .2s;
  display:flex;align-items:center;gap:8px;
}
.lm-next-btn:hover{opacity:.88;transform:translateY(-1px);}
.lm-next-btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.lm-confirm-btn{
  background:linear-gradient(135deg,var(--green),#059669);border:none;
  border-radius:11px;padding:10px 24px;font-size:13px;font-weight:700;
  color:#fff;cursor:pointer;font-family:'Tajawal',sans-serif;transition:all .2s;
  display:flex;align-items:center;gap:8px;
}
.lm-confirm-btn:hover{opacity:.88;}


/* ═══════════════════════════════════════
   BOARD VIEW
═══════════════════════════════════════ */
#board{display:flex;flex-direction:column;position:fixed;inset:0;background:var(--canvas-bg);}

.board-topbar{
  display:flex;align-items:center;gap:4px;
  padding:0 10px;height:52px;background:var(--surface);
  border-bottom:1px solid var(--border);box-shadow:var(--sh-sm);
  flex-shrink:0;overflow-x:auto;overflow-y:hidden;
}
.board-topbar::-webkit-scrollbar{height:0;}
.board-title-input{
  background:none;border:none;outline:none;font-size:14px;font-weight:700;
  color:var(--text);flex:1;min-width:80px;max-width:220px;font-family:'Tajawal',sans-serif;
}
.bsp{flex:1;}
.bb{
  background:none;border:1px solid transparent;border-radius:9px;
  padding:7px 9px;color:var(--text2);cursor:pointer;font-size:14px;
  white-space:nowrap;transition:all .18s;display:flex;align-items:center;gap:5px;
  flex-shrink:0;font-family:'Tajawal',sans-serif;
}
.bb:hover{background:var(--surface2);border-color:var(--border);color:var(--text);}
.bb.active,.bb.bb-ai{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border:none;}
.bb.bb-back{font-size:16px;}
.live-btn.active{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;border:none;animation:liveP 2s infinite;}
@keyframes liveP{0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,.4);}50%{box-shadow:0 0 0 8px rgba(239,68,68,0);}}

#curr-active-badge{
  display:flex;align-items:center;gap:6px;
  background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.25);
  border-radius:20px;padding:3px 12px;font-size:11px;font-weight:700;color:#10b981;
  white-space:nowrap;max-width:200px;overflow:hidden;text-overflow:ellipsis;flex-shrink:0;
}

.board-body{display:flex;flex:1;overflow:hidden;}

/* Toolbar */
.toolbar{
  width:70px;flex-shrink:0;background:var(--surface);
  border-left:1px solid var(--border);display:flex;flex-direction:column;
  align-items:center;gap:3px;padding:10px 6px;overflow-y:auto;
}
.tool-btn{
  width:54px;display:flex;flex-direction:column;align-items:center;gap:3px;
  background:none;border:1.5px solid transparent;border-radius:10px;
  padding:8px 4px;color:var(--text2);cursor:pointer;font-size:13px;
  transition:all .18s;font-family:'Tajawal',sans-serif;
}
.tool-btn:hover{background:var(--surface2);border-color:var(--border);color:var(--text);}
.tool-btn.active{background:rgba(59,91,219,.1);border-color:var(--accent);color:var(--accent);}
.tool-btn span{font-size:9px;font-weight:600;}
.tool-sep{width:36px;height:1px;background:var(--border);margin:4px 0;flex-shrink:0;}

/* Canvas */
.canvas-area{flex:1;position:relative;overflow:hidden;background:var(--canvas-bg);}
#boardCanvas{position:absolute;inset:0;width:100%;height:100%;cursor:crosshair;}
#nodes-layer{position:absolute;inset:0;pointer-events:none;}

/* Color bar */
.color-bar{
  position:absolute;bottom:14px;left:50%;transform:translateX(-50%);
  background:var(--surface);border:1px solid var(--border);border-radius:40px;
  padding:8px 16px;display:flex;align-items:center;gap:8px;
  box-shadow:var(--sh);z-index:10;flex-wrap:nowrap;overflow-x:auto;max-width:90vw;
}
.color-bar::-webkit-scrollbar{height:0;}
.color-dot{
  width:22px;height:22px;border-radius:50%;cursor:pointer;flex-shrink:0;
  border:2px solid transparent;transition:transform .15s;
}
.color-dot:hover,.color-dot.active{transform:scale(1.25);border-color:rgba(0,0,0,.2);}
#custom-color{width:22px;height:22px;border-radius:50%;border:none;padding:0;cursor:pointer;background:none;flex-shrink:0;}
.bar-sep{width:1px;height:20px;background:var(--border);flex-shrink:0;}
.bar-label{font-size:11px;color:var(--text3);white-space:nowrap;flex-shrink:0;}
#brush-size{width:80px;cursor:pointer;flex-shrink:0;accent-color:var(--accent);}


/* ═══════════════════════════════════════
   MODALS
═══════════════════════════════════════ */
.modal-overlay{
  position:fixed;inset:0;z-index:8000;
  background:rgba(0,0,0,.5);backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;padding:16px;
}
.modal{
  background:var(--surface);border-radius:22px;
  padding:28px;width:min(520px,100%);max-height:90vh;overflow-y:auto;
  box-shadow:0 40px 100px rgba(0,0,0,.35);
}
.modal-header{
  display:flex;align-items:center;gap:14px;margin-bottom:22px;
}
.modal-header h2{font-size:18px;font-weight:800;color:var(--text);}
.modal-header p{font-size:12px;color:var(--text3);}
.modal-x{
  margin-right:auto;background:var(--surface2);border:1px solid var(--border);
  border-radius:50%;width:30px;height:30px;font-size:14px;cursor:pointer;
  color:var(--text2);display:flex;align-items:center;justify-content:center;transition:all .2s;
}
.modal-x:hover{background:var(--red);color:#fff;border-color:var(--red);}
.form-row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:16px;}
@media(max-width:480px){.form-row-2{grid-template-columns:1fr;}}
.section-label{display:block;font-size:12px;font-weight:700;color:var(--text2);margin-bottom:10px;margin-top:16px;text-transform:uppercase;letter-spacing:1px;}
.persona-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:4px;}
.persona-opt{
  background:var(--surface2);border:1.5px solid var(--border);border-radius:12px;
  padding:12px 8px;text-align:center;cursor:pointer;transition:all .2s;
}
.persona-opt:hover,.persona-opt.active{border-color:var(--accent);background:rgba(59,91,219,.07);}
.persona-opt i{display:block;font-size:18px;margin-bottom:5px;color:var(--accent);}
.persona-opt span{font-size:11px;font-weight:600;color:var(--text);}
.theme-row{display:flex;gap:10px;margin-bottom:4px;}
.theme-opt{
  flex:1;background:var(--surface2);border:1.5px solid var(--border);border-radius:12px;
  padding:12px;text-align:center;cursor:pointer;transition:all .2s;
}
.theme-opt:hover,.theme-opt.active{border-color:var(--accent);background:rgba(59,91,219,.07);}
.theme-opt i{margin-left:6px;color:var(--accent);}
.theme-opt span{font-size:13px;font-weight:600;}
.modal-actions{display:flex;gap:10px;margin-top:22px;}
.btn-cancel{
  flex:1;background:var(--surface2);border:1.5px solid var(--border);border-radius:12px;
  padding:12px;font-size:14px;font-weight:600;color:var(--text2);cursor:pointer;
  font-family:'Tajawal',sans-serif;transition:all .2s;
}
.btn-cancel:hover{border-color:var(--red);color:var(--red);}
.btn-create{
  flex:2;background:linear-gradient(135deg,var(--accent),var(--accent2));border:none;
  border-radius:12px;padding:12px;font-size:14px;font-weight:700;color:#fff;cursor:pointer;
  font-family:'Tajawal',sans-serif;display:flex;align-items:center;justify-content:center;gap:8px;transition:all .2s;
}
.btn-create:hover{opacity:.88;transform:translateY(-1px);}


/* ═══════════════════════════════════════
   AI PANEL
═══════════════════════════════════════ */
.ai-bubble{
  position:fixed;bottom:24px;left:24px;z-index:7000;
  width:56px;height:56px;border-radius:50%;border:none;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;font-size:22px;cursor:pointer;box-shadow:0 6px 28px rgba(59,91,219,.45);
  display:flex;align-items:center;justify-content:center;transition:all .2s;
}
.ai-bubble:hover{transform:scale(1.1);}
.ai-pulse{
  position:absolute;top:2px;right:2px;width:13px;height:13px;border-radius:50%;
  background:#10b981;border:2px solid white;animation:pulse 2s infinite;
}
.ai-panel{
  position:fixed;bottom:90px;left:24px;z-index:7001;
  width:min(360px,calc(100vw - 48px));background:var(--surface);
  border:1px solid var(--border);border-radius:20px;
  box-shadow:var(--sh-lg);display:flex;flex-direction:column;
  max-height:70vh;transform:translateY(20px) scale(.95);opacity:0;
  pointer-events:none;transition:all .25s cubic-bezier(.34,1.56,.64,1);
}
.ai-panel.open{transform:translateY(0) scale(1);opacity:1;pointer-events:all;}
.ai-panel-header{
  display:flex;align-items:center;gap:12px;padding:14px 16px;
  border-bottom:1px solid var(--border);flex-shrink:0;
}
.ai-panel-avatar{
  width:36px;height:36px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;
}
.ai-panel-name{font-size:14px;font-weight:700;color:var(--text);}
.ai-panel-status{font-size:11px;color:var(--green);}
.ai-panel-close{margin-right:auto;cursor:pointer;color:var(--text3);font-size:16px;padding:4px;}
.ai-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;min-height:80px;}
.ai-msg{max-width:85%;padding:10px 14px;border-radius:14px;font-size:13px;line-height:1.6;}
.ai-msg.ai{background:var(--surface2);border:1px solid var(--border);color:var(--text);align-self:flex-start;border-radius:4px 14px 14px 14px;}
.ai-msg.user{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;align-self:flex-end;border-radius:14px 4px 14px 14px;}
.ai-typing{display:flex;gap:5px;align-items:center;padding:10px 14px;}
.ai-typing span{width:7px;height:7px;border-radius:50%;background:var(--text3);animation:dot 1.4s infinite;}
.ai-typing span:nth-child(2){animation-delay:.2s;}
.ai-typing span:nth-child(3){animation-delay:.4s;}
@keyframes dot{0%,100%{transform:translateY(0);}50%{transform:translateY(-5px);}}
.ai-upload-row{display:flex;gap:8px;padding:8px 12px;border-top:1px solid var(--border);}
.ai-upload-btn{
  background:var(--surface2);border:1px solid var(--border);border-radius:9px;
  padding:7px 12px;font-size:12px;color:var(--text2);cursor:pointer;display:flex;align-items:center;gap:6px;
  font-family:'Tajawal',sans-serif;transition:all .2s;
}
.ai-upload-btn:hover{border-color:var(--accent);color:var(--accent);}
.ai-tts-btn{
  background:var(--surface2);border:1px solid var(--border);border-radius:9px;
  padding:7px 10px;font-size:13px;color:var(--text2);cursor:pointer;transition:all .2s;
}
.ai-tts-btn:hover,.ai-tts-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);}
.ai-input-row{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--border);flex-shrink:0;}
.ai-textarea{
  flex:1;background:var(--surface2);border:1px solid var(--border);border-radius:12px;
  padding:10px 12px;font-size:13px;color:var(--text);resize:none;outline:none;
  max-height:100px;font-family:'Tajawal',sans-serif;transition:border .2s;
}
.ai-textarea:focus{border-color:var(--accent);}
.ai-send-btn{
  background:linear-gradient(135deg,var(--accent),var(--accent2));border:none;border-radius:12px;
  padding:10px 14px;color:#fff;font-size:15px;cursor:pointer;flex-shrink:0;transition:all .2s;
}
.ai-send-btn:hover{opacity:.88;}


/* ═══════════════════════════════════════
   TTS BAR
═══════════════════════════════════════ */
.tts-bar{
  position:fixed;bottom:24px;right:50%;transform:translateX(50%);z-index:6000;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  border-radius:40px;padding:10px 20px;display:flex;align-items:center;gap:12px;
  box-shadow:0 6px 28px rgba(59,91,219,.4);min-width:240px;max-width:80vw;
}
.tts-icon{color:#fff;font-size:15px;animation:ttsWave .8s ease-in-out infinite alternate;}
@keyframes ttsWave{from{transform:scale(1);}to{transform:scale(1.3);}}
.tts-text{flex:1;font-size:12px;color:rgba(255,255,255,.85);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.tts-stop{background:rgba(255,255,255,.2);border:none;border-radius:50%;width:28px;height:28px;color:#fff;cursor:pointer;font-size:11px;display:flex;align-items:center;justify-content:center;}
.tts-stop:hover{background:rgba(255,255,255,.35);}
.tts-engine-btn{background:rgba(255,255,255,.15);border:none;border-radius:50%;width:28px;height:28px;color:rgba(255,255,255,.8);cursor:pointer;font-size:11px;display:flex;align-items:center;justify-content:center;}


/* ═══════════════════════════════════════
   NOTIFICATIONS
═══════════════════════════════════════ */
.notif{
  position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:9998;
  background:var(--text);color:var(--surface);border-radius:40px;
  padding:10px 24px;font-size:13px;font-weight:600;
  box-shadow:0 8px 32px rgba(0,0,0,.3);white-space:nowrap;max-width:90vw;overflow:hidden;text-overflow:ellipsis;
}


/* ═══════════════════════════════════════
   CONTEXT MENU
═══════════════════════════════════════ */
.ctx-menu{
  position:fixed;z-index:9000;background:var(--surface);
  border:1px solid var(--border);border-radius:14px;padding:6px;
  box-shadow:var(--sh-lg);min-width:180px;
}
.ctx-item{
  display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;
  font-size:13px;color:var(--text2);cursor:pointer;transition:all .15s;
}
.ctx-item:hover{background:var(--surface2);color:var(--text);}
.ctx-item.danger:hover{background:rgba(239,68,68,.08);color:var(--red);}
.ctx-sep{height:1px;background:var(--border);margin:4px 0;}


/* ═══════════════════════════════════════
   MINISTRY DOCUMENT
═══════════════════════════════════════ */
.ministry-overlay{position:fixed;inset:0;z-index:9500;background:rgba(0,0,0,.6);overflow-y:auto;padding:24px;}
.ministry-doc{background:var(--surface);border-radius:20px;max-width:680px;margin:0 auto;padding:36px;position:relative;}
.ministry-close{position:absolute;top:16px;right:16px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:8px 14px;font-size:13px;cursor:pointer;color:var(--text2);font-family:'Tajawal',sans-serif;}
.ministry-close:hover{background:var(--red);color:#fff;border-color:var(--red);}
.ministry-header{text-align:center;padding:24px 0;border-bottom:1px solid var(--border);margin-bottom:24px;}
.ministry-emblem{font-size:48px;margin-bottom:12px;}
.ministry-header h1{font-size:20px;font-weight:800;color:var(--text);}
.ministry-header h2{font-size:15px;color:var(--accent);margin-top:4px;}
.ministry-header p{font-size:12px;color:var(--text3);margin-top:8px;}
.ministry-doc h3{font-size:15px;font-weight:700;color:var(--accent);margin:20px 0 10px;display:flex;align-items:center;gap:8px;}
.ministry-doc h3::before{content:'';width:4px;height:16px;background:var(--accent);border-radius:2px;display:inline-block;}
.ministry-doc p,.ministry-doc li{font-size:13px;color:var(--text2);line-height:1.8;margin-bottom:6px;}
.ministry-doc ul{padding-right:20px;}
.ministry-footer{text-align:center;padding:20px 0 0;border-top:1px solid var(--border);margin-top:24px;font-size:12px;color:var(--text3);}


/* ═══════════════════════════════════════
   LIVE MODE & PROJECTOR & DEMO
═══════════════════════════════════════ */
#live-overlay{
  position:fixed;top:0;left:0;right:0;z-index:8500;
  background:rgba(10,15,40,.92);backdrop-filter:blur(8px);
  padding:14px 24px;
}
.live-header{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.live-pulse{display:flex;align-items:center;gap:8px;color:#ef4444;font-size:14px;font-weight:700;}
.live-pulse span{width:10px;height:10px;border-radius:50%;background:#ef4444;animation:pulse 1s infinite;}
#live-topic-display{flex:1;color:rgba(255,255,255,.8);font-size:13px;}
.live-stop-btn{background:rgba(239,68,68,.2);border:1px solid rgba(239,68,68,.4);border-radius:10px;padding:8px 16px;color:#ef4444;cursor:pointer;font-size:12px;font-family:'Tajawal',sans-serif;}
#live-progress-bar{height:3px;background:rgba(255,255,255,.1);margin-top:10px;border-radius:2px;}
#live-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:2px;transition:width .5s;}
#live-caption{color:rgba(255,255,255,.6);font-size:12px;margin-top:6px;}

#projector-overlay{position:fixed;top:0;left:0;right:0;z-index:8600;background:rgba(10,15,40,.88);padding:10px 20px;}
.projector-bar{display:flex;align-items:center;gap:12px;color:#fff;font-size:13px;}
.proj-tools{display:flex;gap:6px;}
.proj-tools button{background:rgba(255,255,255,.12);border:none;border-radius:8px;padding:7px 10px;color:#fff;cursor:pointer;font-size:14px;}
.proj-tools button:hover{background:rgba(255,255,255,.22);}
.projector-bar>button:last-child{margin-right:auto;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:9px;padding:7px 14px;color:#fff;cursor:pointer;font-size:12px;font-family:'Tajawal',sans-serif;}

.demo-topbar{background:#1a2040;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;color:#fff;font-size:14px;font-weight:600;}
.demo-controls{background:#0d1117;padding:14px 20px;display:flex;gap:10px;}
.demo-controls button{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);border-radius:9px;padding:9px 18px;color:#fff;cursor:pointer;font-size:13px;font-family:'Tajawal',sans-serif;}
.demo-controls button:hover{background:rgba(255,255,255,.18);}


/* ═══════════════════════════════════════
   BOARD NODES (all types)
═══════════════════════════════════════ */
.board-node{
  position:absolute;cursor:move;user-select:none;
  animation:nodeIn .25s cubic-bezier(.34,1.56,.64,1);
  pointer-events:all;
}
@keyframes nodeIn{from{transform:scale(.8) translateY(10px);opacity:0;}to{transform:scale(1) translateY(0);opacity:1;}}
@keyframes nodeOut{to{transform:scale(.8) translateY(10px);opacity:0;}}
.board-node.selected{outline:2.5px solid var(--accent);outline-offset:3px;}
.node-actions{position:absolute;top:-32px;right:0;display:none;gap:4px;z-index:10;}
.board-node:hover .node-actions,.board-node.selected .node-actions{display:flex;}
.na-btn{background:var(--surface);border:1px solid var(--border);border-radius:7px;padding:4px 7px;font-size:11px;cursor:pointer;color:var(--text2);white-space:nowrap;}
.na-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent);}
.na-btn.danger:hover{background:var(--red);border-color:var(--red);}

/* Node base */
.node-title{background:linear-gradient(135deg,#1a237e,var(--accent));color:#fff;border-radius:16px;padding:16px 24px;min-width:200px;text-align:center;box-shadow:0 6px 24px rgba(26,35,126,.3);}
.node-title h2{font-size:clamp(16px,3vw,22px);font-weight:800;line-height:1.3;}
.node-subtitle{background:var(--surface);border:2px solid var(--accent);border-radius:14px;padding:12px 20px;min-width:180px;text-align:center;color:var(--accent);font-size:16px;font-weight:700;}
.node-content{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:220px;max-width:320px;box-shadow:var(--sh-sm);}
.node-content h4{font-size:13px;font-weight:700;color:var(--accent);margin-bottom:8px;}
.node-content ul{padding-right:16px;font-size:12px;color:var(--text2);line-height:1.7;}
.node-keypoints{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:220px;box-shadow:var(--sh-sm);}
.node-keypoints h4{color:var(--accent);font-size:13px;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.node-keypoints h4::before{content:'●';color:var(--accent);}
.kp-item{display:flex;align-items:flex-start;gap:8px;margin-bottom:7px;font-size:12px;color:var(--text2);}
.kp-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex-shrink:0;margin-top:4px;}
.node-summary{background:linear-gradient(135deg,rgba(16,185,129,.1),rgba(6,182,212,.05));border:1px solid rgba(16,185,129,.2);border-radius:14px;padding:16px;min-width:200px;}
.node-summary .sum-label{font-size:10px;font-weight:700;color:var(--green);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:7px;}
.node-summary p{font-size:13px;color:var(--text2);line-height:1.6;}
.node-tip{background:linear-gradient(135deg,rgba(245,158,11,.08),rgba(251,191,36,.04));border:1px solid rgba(245,158,11,.2);border-radius:14px;padding:14px 16px;min-width:200px;}
.node-tip .tip-hdr{color:var(--orange);font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:7px;}
.node-important{background:linear-gradient(135deg,rgba(239,68,68,.07),rgba(220,38,38,.04));border:1px solid rgba(239,68,68,.2);border-left:4px solid var(--red);border-radius:14px;padding:14px 16px;min-width:200px;}
.node-important .imp-hdr{color:var(--red);font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:7px;}
.node-definition{background:var(--node-bg);border:1px solid var(--node-bdr);border-radius:14px;padding:14px 16px;min-width:200px;}
.node-definition .def-term{font-size:15px;font-weight:800;color:var(--accent);margin-bottom:6px;}
.node-definition .def-text{font-size:12px;color:var(--text2);line-height:1.6;}
.node-formula{background:linear-gradient(135deg,#1a2040,#2d3a7c);border-radius:16px;padding:18px;min-width:200px;text-align:center;}
.node-formula .formula-hdr{font-size:11px;color:rgba(255,255,255,.5);margin-bottom:8px;letter-spacing:1px;text-transform:uppercase;}
.node-formula .formula-eq{font-size:20px;font-weight:800;color:#fff;font-family:monospace;margin-bottom:8px;}
.node-formula .formula-note{font-size:11px;color:rgba(255,255,255,.4);}
.node-mindmap{background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:50%;width:110px;height:110px;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;font-weight:800;font-size:13px;box-shadow:0 8px 28px rgba(59,91,219,.4);}
.node-mindmap-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px;min-width:240px;box-shadow:var(--sh);}
.node-mindmap-card .mmc-center{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border-radius:10px;padding:10px 14px;font-weight:700;font-size:13px;text-align:center;margin-bottom:12px;}
.node-mindmap-card .mmc-branch{display:flex;align-items:center;gap:8px;padding:7px 10px;background:var(--surface2);border:1px solid var(--border);border-radius:9px;margin-bottom:6px;font-size:12px;color:var(--text2);}
.node-mindmap-card .mmc-branch::before{content:'◆';color:var(--accent);font-size:8px;flex-shrink:0;}
.node-flashcard{perspective:600px;min-width:220px;min-height:130px;cursor:pointer;}
.fc-inner{position:relative;width:100%;height:130px;transform-style:preserve-3d;transition:transform .5s;}
.node-flashcard.flipped .fc-inner{transform:rotateY(180deg);}
.fc-front,.fc-back{position:absolute;inset:0;border-radius:14px;padding:18px;display:flex;align-items:center;justify-content:center;text-align:center;backface-visibility:hidden;}
.fc-front{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:700;font-size:13px;flex-direction:column;gap:8px;}
.fc-front .fc-hint{font-size:10px;opacity:.7;letter-spacing:1px;text-transform:uppercase;}
.fc-back{background:var(--surface);border:2px solid var(--accent);color:var(--text);font-size:12px;line-height:1.6;transform:rotateY(180deg);}
.node-quiz{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px;min-width:240px;box-shadow:var(--sh-sm);}
.node-quiz .quiz-q{font-size:13px;font-weight:700;color:var(--text);margin-bottom:12px;line-height:1.5;}
.quiz-opt{padding:9px 12px;border:1.5px solid var(--border);border-radius:10px;margin-bottom:6px;cursor:pointer;font-size:12px;color:var(--text2);transition:all .2s;display:flex;align-items:center;gap:8px;}
.quiz-opt:hover{border-color:var(--accent);color:var(--accent);background:rgba(59,91,219,.04);}
.quiz-opt.correct{background:rgba(16,185,129,.1);border-color:var(--green);color:var(--green);}
.quiz-opt.wrong{background:rgba(239,68,68,.07);border-color:var(--red);color:var(--red);}
.quiz-opt-letter{width:20px;height:20px;border-radius:6px;background:var(--surface2);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;flex-shrink:0;}
.node-qa{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:220px;box-shadow:var(--sh-sm);}
.node-qa .qa-q{font-size:13px;font-weight:700;color:var(--text);margin-bottom:10px;}
.node-qa .qa-reveal{background:var(--accent);border:none;border-radius:9px;padding:8px 14px;color:#fff;font-size:12px;cursor:pointer;font-family:'Tajawal',sans-serif;}
.node-qa .qa-a{font-size:12px;color:var(--text2);line-height:1.6;margin-top:10px;padding-top:10px;border-top:1px solid var(--border);}
.node-game{background:linear-gradient(135deg,rgba(6,182,212,.08),rgba(59,91,219,.05));border:1px solid rgba(6,182,212,.2);border-radius:14px;padding:16px;min-width:220px;}
.node-game .game-q{font-size:13px;color:var(--text);line-height:1.7;margin-bottom:10px;}
.node-game .game-q .blank{border-bottom:2px solid var(--accent);padding:0 8px;color:var(--accent);font-weight:700;}
.node-game input{background:var(--surface);border:1.5px solid var(--border);border-radius:9px;padding:8px 12px;font-size:13px;color:var(--text);width:100%;font-family:'Tajawal',sans-serif;outline:none;}
.node-game input:focus{border-color:var(--accent);}
.node-game button{margin-top:8px;background:var(--accent);border:none;border-radius:9px;padding:8px 16px;color:#fff;font-size:12px;cursor:pointer;font-family:'Tajawal',sans-serif;}
.node-steps{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:220px;box-shadow:var(--sh-sm);}
.node-steps h4{font-size:13px;font-weight:700;color:var(--accent);margin-bottom:10px;}
.step-item{display:flex;align-items:flex-start;gap:10px;margin-bottom:8px;}
.step-num{min-width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;font-size:10px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.step-text{font-size:12px;color:var(--text2);line-height:1.5;}
.node-timeline{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:220px;}
.node-timeline h4{font-size:13px;font-weight:700;color:var(--accent);margin-bottom:12px;}
.tl-item{display:flex;gap:12px;margin-bottom:12px;position:relative;}
.tl-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);flex-shrink:0;margin-top:3px;position:relative;z-index:1;}
.tl-item:not(:last-child) .tl-dot::after{content:'';position:absolute;top:10px;left:4px;width:2px;height:calc(100% + 6px);background:var(--border);}
.tl-date{font-size:10px;font-weight:700;color:var(--accent);min-width:60px;}
.tl-text{font-size:12px;color:var(--text2);line-height:1.5;}
.node-compare{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:260px;}
.node-compare h4{font-size:13px;font-weight:700;color:var(--text);margin-bottom:12px;text-align:center;}
.compare-cols{display:flex;gap:10px;}
.compare-col{flex:1;}
.compare-col-title{font-size:11px;font-weight:700;color:var(--accent);background:rgba(59,91,219,.08);border-radius:7px;padding:5px 8px;text-align:center;margin-bottom:6px;}
.compare-item{font-size:11px;color:var(--text2);padding:5px 8px;background:var(--surface2);border-radius:7px;margin-bottom:4px;}
.node-pros-cons{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:240px;}
.node-pros-cons h4{font-size:13px;font-weight:700;color:var(--text);margin-bottom:10px;}
.pc-cols{display:flex;gap:10px;}
.pc-col{flex:1;}
.pc-title{font-size:11px;font-weight:700;padding:4px 8px;border-radius:7px;text-align:center;margin-bottom:6px;}
.pc-pro .pc-title{background:rgba(16,185,129,.12);color:var(--green);}
.pc-con .pc-title{background:rgba(239,68,68,.08);color:var(--red);}
.pc-item{font-size:11px;color:var(--text2);padding:5px 8px;background:var(--surface2);border-radius:7px;margin-bottom:4px;}
.node-quote{background:var(--surface2);border-right:4px solid var(--accent2);border-radius:14px;padding:16px;min-width:200px;}
.node-quote .quote-text{font-size:14px;font-weight:700;color:var(--text);font-style:italic;margin-bottom:8px;line-height:1.5;}
.node-quote .quote-author{font-size:11px;color:var(--text3);font-weight:600;}
.node-stat{background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:16px;padding:20px;min-width:160px;text-align:center;color:#fff;}
.node-stat .stat-value{font-size:36px;font-weight:900;line-height:1;}
.node-stat .stat-label{font-size:12px;opacity:.75;margin-top:4px;}
.node-stat .stat-desc{font-size:11px;opacity:.6;margin-top:6px;line-height:1.4;}
.node-sticky{border-radius:4px 4px 20px 4px;padding:16px;min-width:160px;min-height:120px;box-shadow:4px 4px 12px rgba(0,0,0,.15);position:relative;}
.sticky-yellow{background:#fef08a;}
.sticky-green{background:#bbf7d0;}
.sticky-blue{background:#bfdbfe;}
.sticky-pink{background:#fbcfe8;}
.node-sticky textarea{background:transparent;border:none;outline:none;width:100%;min-height:80px;font-size:13px;font-family:'Tajawal',sans-serif;resize:none;color:#374151;}
.node-table{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;min-width:240px;}
.node-table h4{font-size:13px;font-weight:700;color:var(--text);padding:12px 14px;border-bottom:1px solid var(--border);}
.node-table table{width:100%;border-collapse:collapse;font-size:12px;}
.node-table th{background:rgba(59,91,219,.08);color:var(--accent);font-weight:700;padding:8px 12px;border-bottom:1px solid var(--border);text-align:right;}
.node-table td{padding:7px 12px;border-bottom:1px solid var(--border);color:var(--text2);}
.node-table tr:last-child td{border-bottom:none;}
.node-code{background:#0d1117;border-radius:14px;overflow:hidden;min-width:220px;}
.node-code .code-header{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:#161b27;border-bottom:1px solid rgba(255,255,255,.06);}
.node-code .code-lang{font-size:10px;color:rgba(255,255,255,.3);font-weight:600;letter-spacing:1px;}
.node-code .code-copy{background:rgba(255,255,255,.08);border:none;border-radius:6px;padding:4px 10px;font-size:10px;color:rgba(255,255,255,.4);cursor:pointer;font-family:'Tajawal',sans-serif;}
.node-code pre{padding:14px;font-size:12px;color:#e4ecff;overflow-x:auto;font-family:monospace;line-height:1.7;}
.node-passage{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:240px;max-width:360px;box-shadow:var(--sh-sm);}
.node-passage h4{font-size:13px;font-weight:700;color:var(--accent);margin-bottom:8px;}
.node-passage p{font-size:12px;color:var(--text2);line-height:1.8;}
.node-longtext{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:260px;max-width:400px;}
.node-longtext p{font-size:12px;color:var(--text2);line-height:1.8;}
.node-poster{border-radius:16px;padding:24px;min-width:220px;text-align:center;box-shadow:var(--sh-lg);}
.node-poster .poster-title{font-size:22px;font-weight:900;color:#fff;margin-bottom:8px;line-height:1.2;}
.node-poster .poster-body{font-size:13px;color:rgba(255,255,255,.7);line-height:1.6;}
.node-image img{max-width:280px;border-radius:14px;display:block;}
.node-image .img-loading{background:var(--surface2);border:2px dashed var(--border);border-radius:14px;width:200px;height:150px;display:flex;align-items:center;justify-content:center;color:var(--text3);font-size:12px;flex-direction:column;gap:8px;}
.node-image .img-loading i{font-size:24px;animation:spin 1s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}
.svg-wrapper{background:transparent!important;display:inline-block;}
.svg-wrapper svg{background:transparent!important;display:block;}
.node-timer{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px;min-width:160px;text-align:center;box-shadow:var(--sh-sm);}
.node-timer .timer-display{font-size:32px;font-weight:800;color:var(--accent);font-family:monospace;margin:8px 0;}
.node-timer.expired .timer-display{color:var(--red);animation:pulse .5s infinite;}
.node-timer .timer-btns{display:flex;gap:6px;justify-content:center;}
.node-timer .timer-btns button{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:6px 12px;cursor:pointer;font-size:12px;color:var(--text2);font-family:'Tajawal',sans-serif;}
.node-counter{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;min-width:140px;text-align:center;}
.node-counter .counter-val{font-size:40px;font-weight:900;color:var(--accent);}
.node-counter .counter-btns{display:flex;gap:8px;justify-content:center;margin-top:8px;}
.node-counter .counter-btns button{background:var(--accent);border:none;border-radius:8px;padding:7px 16px;color:#fff;font-size:16px;cursor:pointer;font-family:'Tajawal',sans-serif;}
.node-rating{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px 16px;text-align:center;}
.node-rating .rating-stars{font-size:24px;cursor:pointer;letter-spacing:2px;}
.node-rating .rating-lbl{font-size:11px;color:var(--text3);margin-top:4px;}

/* ═══════════════════════════════════════
   MISSING / PATCH CSS
═══════════════════════════════════════ */

/* AI message class aliases (JS uses msg-ai / msg-user) */
.ai-msg.msg-ai{background:var(--surface2);border:1px solid var(--border);color:var(--text);align-self:flex-start;border-radius:4px 14px 14px 14px;}
.ai-msg.msg-user{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;align-self:flex-end;border-radius:14px 4px 14px 14px;}

/* Typing animation dots */
.typing-dots{display:flex;align-items:center;gap:5px;padding:4px 0;}
.bounce-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:dotBounce .9s ease-in-out infinite;}
.bounce-dot:nth-child(2){animation-delay:.2s;}
.bounce-dot:nth-child(3){animation-delay:.4s;}
@keyframes dotBounce{0%,100%{transform:translateY(0);opacity:.5;}50%{transform:translateY(-6px);opacity:1;}}

/* Demo modal wrapper */
.demo-modal{
  position:fixed;inset:0;z-index:9000;background:rgba(0,0,0,.85);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.demo-modal.hidden{display:none;}

/* AI Panel info strip */
.ai-panel-info{
  padding:8px 14px;font-size:11px;color:var(--text3);
  border-bottom:1px solid var(--border);background:var(--surface);
  display:flex;align-items:center;gap:6px;
}

/* Quick action cards */
.qa-card{display:flex;flex-direction:column;align-items:center;gap:8px;padding:18px 14px;
  border:1.5px solid var(--border);border-radius:16px;background:var(--surface);
  cursor:pointer;font-size:13px;font-weight:600;color:var(--text);transition:all .2s;flex:1;min-width:80px;}
.qa-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);}
.qa-card i{font-size:22px;}
.qa-blue{border-color:rgba(59,91,219,.3);color:var(--accent);}
.qa-blue:hover{background:rgba(59,91,219,.06);}
.qa-green{border-color:rgba(16,185,129,.3);color:#10b981;}
.qa-green:hover{background:rgba(16,185,129,.06);}
.qa-purple{border-color:rgba(124,58,237,.3);color:var(--accent2);}
.qa-purple:hover{background:rgba(124,58,237,.06);}
.qa-orange{border-color:rgba(245,158,11,.3);color:#f59e0b;}
.qa-orange:hover{background:rgba(245,158,11,.06);}
.quick-actions{display:flex;gap:12px;margin-bottom:28px;flex-wrap:wrap;}

/* Home sections */
.home-hero{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:16px;}
.home-hero-txt h1{font-size:22px;font-weight:800;color:var(--text);}
.home-hero-txt p{font-size:13px;color:var(--text3);margin-top:4px;}
.home-stats{display:flex;gap:12px;flex-wrap:wrap;}
.hs{display:flex;flex-direction:column;align-items:center;background:var(--surface2);border:1px solid var(--border);
  border-radius:12px;padding:10px 16px;min-width:64px;text-align:center;}
.hs span{font-size:20px;font-weight:800;color:var(--accent);}
.hs small{font-size:10px;color:var(--text3);margin-top:2px;}

/* Board cards bc-meta */
.bc-meta{display:flex;align-items:center;justify-content:space-between;margin-top:10px;}
.bc-tag{font-size:10px;background:rgba(59,91,219,.1);color:var(--accent);
  border-radius:20px;padding:2px 8px;font-weight:600;}
.bc-date{font-size:10px;color:var(--text3);}

/* Upload zone */
.upload-zone{border:2px dashed var(--border);border-radius:16px;padding:32px;text-align:center;
  color:var(--text3);cursor:pointer;transition:all .2s;}
.upload-zone:hover,.upload-zone.drag{border-color:var(--accent);background:rgba(59,91,219,.04);}
.upload-zone i{font-size:32px;margin-bottom:10px;color:var(--accent);}
.upload-zone p{font-size:13px;margin:0;}

/* Dataset list items */
.datasets-list{display:flex;flex-direction:column;gap:10px;margin-top:16px;}
.dataset-item{display:flex;align-items:center;gap:12px;background:var(--surface2);
  border:1px solid var(--border);border-radius:12px;padding:12px 16px;}
.ds-icon{width:36px;height:36px;border-radius:10px;background:rgba(59,91,219,.1);
  display:flex;align-items:center;justify-content:center;color:var(--accent);flex-shrink:0;}
.ds-info{flex:1;min-width:0;}
.ds-name{font-size:13px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.ds-size{font-size:11px;color:var(--text3);}
.ds-use-btn{background:var(--accent);border:none;border-radius:8px;padding:6px 12px;
  color:#fff;font-size:11px;cursor:pointer;font-family:'Tajawal',sans-serif;}
.ds-del-btn{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.2);border-radius:8px;
  width:30px;height:30px;color:#ef4444;cursor:pointer;font-size:11px;
  display:flex;align-items:center;justify-content:center;}

/* Curriculum picker home */
.curr-home-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;margin-top:16px;}
.curr-home-card{background:var(--surface2);border:1.5px solid var(--border);border-radius:14px;
  padding:16px;cursor:pointer;transition:all .2s;text-align:center;}
.curr-home-card:hover{border-color:var(--accent);transform:translateY(-2px);}
.curr-home-card .chc-emoji{font-size:28px;margin-bottom:8px;}
.curr-home-card .chc-title{font-size:13px;font-weight:700;color:var(--text);}
.curr-home-card .chc-sub{font-size:11px;color:var(--text3);margin-top:3px;}

/* Curr badge in board */
.curr-badge{display:flex;align-items:center;gap:6px;background:rgba(16,185,129,.1);
  border:1px solid rgba(16,185,129,.25);border-radius:20px;padding:4px 12px;
  font-size:11px;font-weight:600;color:#10b981;cursor:pointer;max-width:200px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* Live overlay */
.live-overlay{position:fixed;inset:0;z-index:7000;background:rgba(0,0,0,.7);
  display:flex;flex-direction:column;align-items:center;justify-content:flex-end;
  padding-bottom:40px;pointer-events:none;}
.live-overlay.hidden{display:none;}
.live-bar{pointer-events:all;background:linear-gradient(135deg,#1a2040,#2d1b69);
  border-radius:20px;padding:16px 24px;min-width:340px;max-width:600px;
  border:1px solid rgba(255,255,255,.1);box-shadow:0 20px 60px rgba(0,0,0,.5);}
.live-header{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.live-dot{width:10px;height:10px;border-radius:50%;background:#ef4444;animation:livePulse 1s ease-in-out infinite;}
@keyframes livePulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.5;transform:scale(.8);}}
.live-progress-track{height:4px;background:rgba(255,255,255,.15);border-radius:4px;overflow:hidden;margin-bottom:8px;}
.live-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:4px;transition:width .5s ease;}
.live-caption{font-size:11px;color:rgba(255,255,255,.6);}
.live-stop-btn{background:rgba(239,68,68,.2);border:1px solid rgba(239,68,68,.4);
  border-radius:10px;padding:6px 14px;color:#ef4444;cursor:pointer;font-size:12px;
  font-family:'Tajawal',sans-serif;margin-top:10px;}

/* Sidebar nav */
.sb-nav-item{display:flex;align-items:center;gap:10px;padding:11px 16px;border-radius:12px;
  cursor:pointer;font-size:13px;font-weight:600;color:var(--text2);transition:all .15s;border:none;
  background:transparent;width:100%;text-align:right;}
.sb-nav-item:hover,.sb-nav-item.active{background:rgba(59,91,219,.1);color:var(--accent);}
.sb-nav-item i{width:18px;text-align:center;}

/* Sidebar user block */
.sb-user{display:flex;align-items:center;gap:10px;padding:14px 16px;
  border-top:1px solid var(--border);margin-top:auto;}
.sb-av{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px;flex-shrink:0;}
.sb-info{flex:1;min-width:0;}
.sb-uname{display:block;font-size:13px;font-weight:700;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.sb-role-tag{font-size:10px;color:var(--text3);}
.sb-logout{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.2);
  border-radius:8px;width:28px;height:28px;color:#ef4444;cursor:pointer;font-size:11px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;}

/* Ministry overlay */
.ministry-overlay{position:fixed;inset:0;z-index:9500;background:rgba(0,0,0,.7);
  display:flex;align-items:center;justify-content:center;padding:20px;}
.ministry-overlay.hidden{display:none;}
.ministry-card{background:var(--surface);border-radius:20px;padding:32px;max-width:560px;width:100%;
  box-shadow:0 24px 80px rgba(0,0,0,.3);border:1px solid var(--border);}

/* Projector overlay */
.projector-overlay{position:fixed;inset:0;z-index:500;pointer-events:none;}
.projector-overlay.hidden{display:none;}
.proj-watermark{position:absolute;bottom:16px;right:20px;font-size:11px;
  color:rgba(255,255,255,.3);font-family:'Tajawal',sans-serif;}

/* Sidebar overlay (mobile) */
.sb-overlay{position:fixed;inset:0;z-index:1099;background:rgba(0,0,0,.4);}
.sb-overlay.hidden{display:none;}

/* Mobile top bar in app */
.mob-bar{display:none;align-items:center;justify-content:space-between;
  padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:50;}
@media(max-width:768px){.mob-bar{display:flex;}}
.mob-menu,.mob-act{background:var(--surface2);border:1px solid var(--border);
  border-radius:10px;width:36px;height:36px;cursor:pointer;font-size:14px;
  color:var(--text);display:flex;align-items:center;justify-content:center;}
.mob-logo{font-size:14px;font-weight:800;color:var(--accent);}

/* Hidden utility */
.hidden{display:none!important;}

/* ═══════════════════════════════════════════════════════
   MINISTRY DOCUMENT — Enhanced
═══════════════════════════════════════════════════════ */
.ministry-overlay{
  position:fixed;inset:0;z-index:9500;
  background:rgba(0,0,0,.75);
  display:flex;align-items:flex-start;justify-content:center;
  padding:20px;overflow-y:auto;
}
.ministry-overlay.hidden{display:none!important;}
.ministry-doc{
  background:var(--surface);border-radius:20px;
  max-width:680px;width:100%;
  box-shadow:0 24px 80px rgba(0,0,0,.4);
  border:1px solid var(--border);
  position:relative;margin:auto;
}
.ministry-close{
  position:sticky;top:0;right:0;float:left;
  background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.2);
  border-radius:10px;padding:8px 16px;color:#ef4444;
  cursor:pointer;font-size:13px;font-weight:700;
  font-family:'Tajawal',sans-serif;margin:16px;z-index:10;
}
.ministry-close:hover{background:rgba(239,68,68,.2);}
.ministry-header{
  text-align:center;padding:32px 32px 24px;
  border-bottom:1px solid var(--border);
  background:linear-gradient(135deg,rgba(59,91,219,.06),rgba(124,58,237,.06));
}
.ministry-emblem{font-size:52px;margin-bottom:12px;}
.ministry-header h1{font-size:20px;font-weight:900;color:var(--text);margin-bottom:6px;}
.ministry-header h2{font-size:15px;font-weight:700;color:var(--accent);margin-bottom:10px;}
.ministry-badge{
  display:inline-block;background:rgba(59,91,219,.1);
  border:1px solid rgba(59,91,219,.2);border-radius:20px;
  padding:4px 14px;font-size:12px;color:var(--accent);font-weight:600;
}
.ministry-section{padding:24px 32px;border-bottom:1px solid var(--border);}
.ministry-section:last-child{border-bottom:none;}
.ministry-section h3{
  font-size:15px;font-weight:800;color:var(--text);
  margin-bottom:12px;display:flex;align-items:center;gap:8px;
}
.ministry-section p{font-size:13px;color:var(--text2);line-height:1.7;margin-bottom:10px;}
.ministry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
@media(max-width:600px){.ministry-grid{grid-template-columns:1fr;}}
.min-card{
  background:var(--surface2);border:1px solid var(--border);
  border-radius:14px;padding:16px;text-align:center;
}
.min-emoji{font-size:28px;display:block;margin-bottom:8px;}
.min-card strong{display:block;font-size:13px;color:var(--text);margin-bottom:4px;}
.min-card span{display:block;font-size:11px;color:var(--accent);font-weight:600;margin-bottom:4px;}
.min-card small{font-size:10px;color:var(--text3);line-height:1.4;}
.ministry-sources{display:flex;flex-direction:column;gap:10px;}
.min-source{
  display:flex;align-items:center;gap:12px;
  background:var(--surface2);border:1px solid var(--border);
  border-radius:12px;padding:12px 16px;text-decoration:none;
  color:var(--text);transition:all .2s;
}
.min-source:hover{border-color:var(--accent);transform:translateX(-3px);}
.min-source i{font-size:18px;color:var(--accent);width:24px;text-align:center;flex-shrink:0;}
.min-source strong{display:block;font-size:13px;color:var(--accent);}
.min-source small{font-size:11px;color:var(--text3);}
.min-features{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
@media(max-width:600px){.min-features{grid-template-columns:1fr;}}
.min-feat{
  display:flex;align-items:flex-start;gap:12px;
  background:var(--surface2);border:1px solid var(--border);
  border-radius:12px;padding:14px;
}
.min-feat i{font-size:20px;width:24px;flex-shrink:0;margin-top:2px;}
.min-feat strong{display:block;font-size:13px;color:var(--text);margin-bottom:4px;}
.min-feat p{font-size:11px;color:var(--text3);line-height:1.5;margin:0;}
.min-team{display:flex;flex-direction:column;gap:12px;}
.min-member{
  display:flex;align-items:center;gap:14px;
  background:var(--surface2);border:1px solid var(--border);
  border-radius:12px;padding:16px;
}
.min-avatar{
  width:48px;height:48px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:22px;font-weight:800;flex-shrink:0;
}
.min-member strong{display:block;font-size:14px;color:var(--text);margin-bottom:2px;}
.min-member span{display:block;font-size:12px;color:var(--accent);margin-bottom:3px;}
.min-member small{font-size:11px;color:var(--text3);}
.ministry-footer{
  text-align:center;padding:24px 32px;
  background:linear-gradient(135deg,rgba(59,91,219,.04),rgba(124,58,237,.04));
  border-radius:0 0 20px 20px;
}
.min-footer-logo{font-size:18px;font-weight:900;color:var(--accent);margin-bottom:6px;}
.ministry-footer p{font-size:12px;color:var(--text3);margin:4px 0;}

/* ═══════════════════════════════════════════════════════
   CURRICULUM HOME PICKER — Enhanced
═══════════════════════════════════════════════════════ */
.curr-stage-block{margin-bottom:32px;}
.curr-stage-title{
  font-size:16px;font-weight:800;color:var(--text);
  margin-bottom:16px;display:flex;align-items:center;gap:10px;
  padding-bottom:10px;border-bottom:2px solid var(--border);
}
.curr-grade-block{margin-bottom:18px;}
.curr-grade-label{
  font-size:11px;font-weight:700;color:var(--accent);
  letter-spacing:1px;text-transform:uppercase;
  margin-bottom:10px;padding:4px 10px;
  background:rgba(59,91,219,.06);border-radius:6px;
  display:inline-block;
}
.curr-subjects-row{display:flex;flex-wrap:wrap;gap:8px;}
.curr-subj-btn{
  display:flex;align-items:center;gap:7px;
  background:var(--surface);border:1.5px solid var(--border);
  border-radius:24px;padding:7px 14px;
  font-size:12px;font-weight:600;color:var(--text2);
  cursor:pointer;font-family:'Tajawal',sans-serif;
  transition:all .2s;
}
.curr-subj-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(59,91,219,.05);transform:translateY(-1px);}
.curr-subj-btn.loaded{border-color:var(--green);color:var(--green);background:rgba(16,185,129,.06);}
.curr-subj-btn i{font-size:10px;}
.curr-source-notice{
  background:linear-gradient(135deg,rgba(16,185,129,.06),rgba(59,91,219,.06));
  border:1px solid rgba(16,185,129,.2);border-radius:14px;
  padding:14px 18px;margin-bottom:24px;
  display:flex;align-items:flex-start;gap:12px;
}
.curr-source-notice i{color:var(--green);font-size:18px;flex-shrink:0;margin-top:2px;}
.curr-source-notice strong{display:block;font-size:13px;color:var(--text);margin-bottom:3px;}
.curr-source-notice span{font-size:12px;color:var(--text2);}
.curr-active-banner{
  background:linear-gradient(135deg,rgba(16,185,129,.1),rgba(59,91,219,.08));
  border:1.5px solid rgba(16,185,129,.3);border-radius:14px;
  padding:14px 18px;margin-bottom:20px;
  display:flex;align-items:center;gap:12px;
}
.curr-active-banner i{color:var(--green);font-size:20px;}
.curr-active-banner strong{display:block;font-size:13px;color:var(--green);}
.curr-active-banner span{font-size:12px;color:var(--text2);}

/* ═══════════════════════════════════════════════════════
   DEMO MODAL — Fixed layout
═══════════════════════════════════════════════════════ */
#modal-demo{
  position:fixed;inset:0;z-index:9000;
  background:rgba(0,0,0,.88);
  display:flex;align-items:center;justify-content:center;
  padding:20px;
}
#modal-demo.hidden{display:none!important;}
.demo-modal-inner{
  background:#0d1117;border-radius:20px;
  overflow:hidden;width:100%;max-width:760px;
  border:1px solid rgba(255,255,255,.1);
  box-shadow:0 32px 80px rgba(0,0,0,.6);
}
.demo-topbar{
  background:#161b27;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;
  color:#fff;font-size:14px;font-weight:600;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.demo-controls{
  background:#0a0e17;padding:12px 20px;
  display:flex;gap:10px;border-top:1px solid rgba(255,255,255,.07);
}
.demo-controls button{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  border-radius:9px;padding:8px 18px;
  color:#fff;cursor:pointer;font-size:13px;
  font-family:'Tajawal',sans-serif;transition:all .2s;
}
.demo-controls button:hover{background:rgba(255,255,255,.16);}
.demo-play-active{background:rgba(59,91,219,.3)!important;border-color:rgba(59,91,219,.5)!important;}

/* ═══════════════════════════════════════════════════════
   DROPZONE / UPLOAD AREA
═══════════════════════════════════════════════════════ */
.dropzone{
  border:2px dashed var(--border);border-radius:16px;
  padding:36px 24px;text-align:center;color:var(--text3);
  cursor:pointer;transition:all .2s;margin-bottom:20px;
}
.dropzone:hover,.dropzone.drag{
  border-color:var(--accent);
  background:rgba(59,91,219,.04);
}
.dropzone i{font-size:36px;color:var(--accent);margin-bottom:12px;display:block;}
.dropzone h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:6px;}
.dropzone p{font-size:13px;margin:0;}

/* ═══════════════════════════════════════════════════════
   HOME SEC — explicit display control
═══════════════════════════════════════════════════════ */
.home-sec{padding:28px 32px;}
@media(max-width:600px){.home-sec{padding:16px;}}
.sec-hdr{margin-bottom:24px;}
.sec-hdr h2{font-size:20px;font-weight:800;color:var(--text);margin-bottom:6px;display:flex;align-items:center;gap:10px;}
.sec-hdr p{font-size:13px;color:var(--text3);}

/* ═══════════════════════════════════════════════════════
   LIVE MODE OVERLAY — fixed
═══════════════════════════════════════════════════════ */
#live-overlay{
  position:fixed;bottom:0;left:0;right:0;z-index:7000;
  background:linear-gradient(to top,rgba(0,0,0,.9),transparent);
  padding:40px 20px 24px;pointer-events:none;
}
#live-overlay.hidden{display:none!important;}
.live-bar{
  max-width:600px;margin:0 auto;
  background:linear-gradient(135deg,#1a2040,#2d1b69);
  border-radius:20px;padding:20px 24px;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 20px 60px rgba(0,0,0,.5);
  pointer-events:all;
}
.live-header{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.live-pulse{display:flex;align-items:center;gap:7px;color:#fff;font-size:13px;font-weight:700;}
.live-pulse span{width:10px;height:10px;border-radius:50%;background:#ef4444;animation:livePulse2 1s ease-in-out infinite;}
@keyframes livePulse2{0%,100%{opacity:1;}50%{opacity:.4;}}
#live-topic-display{flex:1;font-size:13px;color:rgba(255,255,255,.7);text-align:center;}
.live-stop-btn{
  background:rgba(239,68,68,.2);border:1px solid rgba(239,68,68,.4);
  border-radius:10px;padding:6px 14px;color:#ef4444;
  cursor:pointer;font-size:12px;font-family:'Tajawal',sans-serif;
  pointer-events:all;
}
#live-progress-bar{height:4px;background:rgba(255,255,255,.15);border-radius:4px;overflow:hidden;margin-bottom:10px;}
#live-progress-fill{height:100%;background:linear-gradient(90deg,#3b5bdb,#7c3aed);border-radius:4px;transition:width .5s ease;}
#live-caption{font-size:12px;color:rgba(255,255,255,.55);text-align:center;}

/* ═══════════════════════════════════════════════════════
   PROJECTOR / FULLSCREEN
═══════════════════════════════════════════════════════ */
#projector-overlay{
  position:fixed;inset:0;z-index:500;pointer-events:none;
  background:transparent;
}
#projector-overlay.hidden{display:none;}
.projector-bar{
  position:absolute;bottom:0;left:0;right:0;
  background:rgba(0,0,0,.6);backdrop-filter:blur(10px);
  padding:10px 20px;display:flex;align-items:center;
  gap:16px;color:#fff;font-size:13px;font-weight:600;
  pointer-events:all;
}
.proj-tools{display:flex;gap:8px;}
.projector-bar button{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  border-radius:8px;padding:6px 12px;color:#fff;cursor:pointer;font-size:12px;
}
.projector-bar button:hover{background:rgba(255,255,255,.25);}

/* ════════════════════════════════════════════════════════════
   SMARTBOARD AI — COMPREHENSIVE VISUAL UPGRADE
   Lessons Browser · Teaching Tools · Node Visuals · TTS Bar
   ════════════════════════════════════════════════════════════ */

/* ── Sidebar badge ── */
.sb-badge { font-size:10px; padding:2px 7px; border-radius:20px; font-weight:700; margin-right:auto; line-height:1.4; }
.new-badge { background:linear-gradient(135deg,#f59e0b,#ef4444); color:#fff; animation:badgePulse 2s ease-in-out infinite; }
@keyframes badgePulse { 0%,100%{ box-shadow:0 0 0 0 rgba(245,158,11,.4) } 50%{ box-shadow:0 0 0 5px rgba(245,158,11,0) } }

/* ── Home stats colored ── */
.hs-blue  { border-top:3px solid #3b5bdb !important; }
.hs-purple{ border-top:3px solid #7c3aed !important; }
.hs-green { border-top:3px solid #10b981 !important; }
.hs-orange{ border-top:3px solid #f59e0b !important; }
.hs-blue span  { color:#3b5bdb !important; }
.hs-purple span{ color:#7c3aed !important; }
.hs-green span { color:#10b981 !important; }
.hs-orange span{ color:#f59e0b !important; }
.sec-count { background:var(--accent); color:#fff; border-radius:20px; padding:2px 10px; font-size:12px; font-weight:700; }

/* ── Quick Action Grid ── */
.quick-actions-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:14px; margin:0 0 28px; }
.qag-card { display:flex; align-items:center; gap:14px; padding:16px 18px; border-radius:14px; border:none; cursor:pointer; text-align:right; transition:all .22s cubic-bezier(.4,0,1,1); position:relative; overflow:hidden; }
.qag-card::before { content:''; position:absolute; inset:0; background:linear-gradient(135deg,rgba(255,255,255,.06),transparent); pointer-events:none; }
.qag-card:hover { transform:translateY(-3px); box-shadow:0 12px 32px rgba(0,0,0,.3); }
.qag-icon { width:42px; height:42px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:18px; flex-shrink:0; }
.qag-text { flex:1; display:flex; flex-direction:column; gap:2px; }
.qag-text strong { font-size:14px; font-weight:700; color:#fff; }
.qag-text span { font-size:11px; color:rgba(255,255,255,.65); }
.qag-arrow { font-size:12px; color:rgba(255,255,255,.4); transition:transform .2s; }
.qag-card:hover .qag-arrow { transform:translateX(-4px); color:rgba(255,255,255,.8); }
.qag-primary { background:linear-gradient(135deg,#3b5bdb,#4361ee); }
.qag-primary .qag-icon { background:rgba(255,255,255,.15); color:#fff; }
.qag-green { background:linear-gradient(135deg,#059669,#10b981); }
.qag-green .qag-icon { background:rgba(255,255,255,.15); color:#fff; }
.qag-purple { background:linear-gradient(135deg,#7c3aed,#9c40ff); }
.qag-purple .qag-icon { background:rgba(255,255,255,.15); color:#fff; }
.qag-cyan { background:linear-gradient(135deg,#0284c7,#06b6d4); }
.qag-cyan .qag-icon { background:rgba(255,255,255,.15); color:#fff; }

/* ── Today Lesson Banner ── */
.today-lesson-banner { position:relative; overflow:hidden; background:linear-gradient(135deg,rgba(59,91,219,.18),rgba(124,58,237,.14)); border:1px solid rgba(99,102,241,.3); border-radius:18px; padding:22px 24px; display:flex; align-items:center; gap:20px; margin:0 0 28px; }
.tlb-glow { position:absolute; top:-40px; right:-40px; width:200px; height:200px; background:radial-gradient(circle,rgba(99,102,241,.2),transparent 70%); pointer-events:none; }
.tlb-content { flex:1; }
.tlb-badge { display:inline-flex; align-items:center; gap:6px; background:linear-gradient(135deg,#f59e0b,#ef4444); color:#fff; border-radius:20px; padding:3px 12px; font-size:11px; font-weight:700; margin-bottom:8px; }
.today-lesson-banner h3 { font-size:18px; font-weight:800; color:var(--text1); margin:0 0 4px; }
.today-lesson-banner p { font-size:13px; color:var(--text3); margin:0; }
.tlb-actions { display:flex; gap:8px; flex-shrink:0; }
.tlb-btn { background:linear-gradient(135deg,#3b5bdb,#7c3aed); color:#fff; border:none; padding:10px 18px; border-radius:10px; font-size:13px; font-weight:700; cursor:pointer; display:flex; align-items:center; gap:7px; font-family:Tajawal,sans-serif; transition:all .2s; }
.tlb-btn:hover { transform:translateY(-2px); box-shadow:0 8px 20px rgba(59,91,219,.4); }

/* ════════════════════════════════════════════════════════════
   LESSONS BROWSER
   ════════════════════════════════════════════════════════════ */
.lessons-browser { display:grid; grid-template-columns:300px 1fr; gap:0; min-height:600px; border-radius:18px; overflow:hidden; border:1px solid var(--border); background:var(--surface1); }

.lb-sidebar { background:var(--surface2); border-left:1px solid var(--border); display:flex; flex-direction:column; overflow:hidden; }
.lb-search-wrap { position:relative; padding:14px 14px 10px; }
.lb-search-icon { position:absolute; right:24px; top:50%; transform:translateY(-8px); color:var(--text3); font-size:13px; pointer-events:none; }
.lb-search { width:100%; background:var(--surface1); border:1.5px solid var(--border); border-radius:10px; padding:9px 36px 9px 12px; color:var(--text1); font-family:Tajawal,sans-serif; font-size:13px; outline:none; box-sizing:border-box; transition:border-color .2s; }
.lb-search:focus { border-color:var(--accent); }
.lb-filter-row { display:flex; gap:8px; padding:0 14px 10px; }
.lb-filter-sel { flex:1; background:var(--surface1); border:1.5px solid var(--border); border-radius:8px; padding:6px 8px; color:var(--text1); font-family:Tajawal,sans-serif; font-size:11px; outline:none; cursor:pointer; }
.lb-tree { flex:1; overflow-y:auto; padding:8px 0 16px; }
.lb-tree::-webkit-scrollbar { width:4px; }
.lb-tree::-webkit-scrollbar-thumb { background:var(--border); border-radius:4px; }

.lb-stage-section { margin-bottom:4px; }
.lb-stage-header { padding:10px 16px 6px; font-size:11px; font-weight:800; color:var(--accent); letter-spacing:.5px; text-transform:uppercase; display:flex; align-items:center; gap:8px; }
.lb-grade-group { margin-bottom:2px; }
.lb-grade-header { display:flex; align-items:center; gap:8px; padding:8px 16px; cursor:pointer; font-size:12px; font-weight:700; color:var(--text2); transition:background .15s; user-select:none; }
.lb-grade-header:hover { background:var(--hover); }
.lb-grade-num-badge { width:22px; height:22px; border-radius:6px; background:var(--accent); color:#fff; font-size:11px; font-weight:800; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.lb-grade-body { /* expanded by default */ }
.lb-grade-group.lb-collapsed .lb-grade-body { display:none; }
.lb-grade-group.lb-collapsed .lb-chevron { transform:rotate(-90deg); }
.lb-chevron { margin-right:auto; color:var(--text3); font-size:10px; transition:transform .2s; }
.lb-subject-group { margin-bottom:2px; }
.lb-subject-header { display:flex; align-items:center; gap:8px; padding:6px 16px 6px 12px; cursor:pointer; font-size:12px; font-weight:600; color:var(--text2); transition:background .15s; background:rgba(0,0,0,.1); user-select:none; }
.lb-subject-header:hover { background:var(--hover); }
.lb-subject-lessons { /* expanded */ }
.lb-subject-group.lb-collapsed .lb-subject-lessons { display:none; }
.lb-subject-group.lb-collapsed .lb-chevron { transform:rotate(-90deg); }

.lb-lesson-item { display:flex; align-items:center; gap:8px; padding:7px 16px 7px 10px; cursor:pointer; transition:all .15s; font-size:12px; color:var(--text2); border-right:2px solid transparent; margin:1px 0; }
.lb-lesson-item:hover { background:var(--hover); color:var(--text1); border-right-color:var(--accent); }
.lb-lesson-item.lb-active { background:rgba(59,91,219,.12); color:var(--accent); border-right-color:var(--accent); font-weight:600; }
.lb-lesson-dot { font-size:14px; flex-shrink:0; }
.lb-lesson-name { flex:1; line-height:1.4; }
.lb-term-tag { font-size:9px; background:var(--surface1); border:1px solid var(--border); border-radius:6px; padding:1px 5px; color:var(--text3); flex-shrink:0; }
.lb-no-match { color:var(--text3); font-size:12px; padding:8px 16px; }

/* ── Content Panel ── */
.lb-content-panel { overflow-y:auto; background:var(--surface1); }
.lb-content-panel::-webkit-scrollbar { width:5px; }
.lb-content-panel::-webkit-scrollbar-thumb { background:var(--border); border-radius:5px; }
.lb-empty-state { display:flex; flex-direction:column; align-items:center; justify-content:center; height:100%; min-height:400px; padding:40px; text-align:center; color:var(--text3); gap:12px; }
.lb-empty-icon { font-size:56px; }
.lb-empty-state h3 { font-size:18px; font-weight:700; color:var(--text2); margin:0; }
.lb-empty-state p { font-size:13px; max-width:320px; line-height:1.7; }
.lcp-loading { display:flex; flex-direction:column; align-items:center; justify-content:center; height:300px; gap:16px; color:var(--text3); }
.lcp-spinner { width:36px; height:36px; border:3px solid var(--border); border-top-color:var(--accent); border-radius:50%; animation:spin .7s linear infinite; }
@keyframes spin { to{ transform:rotate(360deg) } }

/* ── Lesson Content Panel ── */
.lcp-inner { padding:28px; display:flex; flex-direction:column; gap:20px; }
.lcp-breadcrumb { display:flex; align-items:center; gap:8px; font-size:11px; color:var(--text3); flex-wrap:wrap; }
.lcp-breadcrumb i { font-size:8px; }
.lcp-header { display:flex; flex-direction:column; gap:10px; }
.lcp-subject-badge { display:inline-flex; align-items:center; gap:7px; padding:5px 14px; border-radius:20px; font-size:12px; font-weight:700; color:#fff; width:fit-content; }
.lcp-title { font-size:26px; font-weight:900; color:var(--text1); margin:0; line-height:1.3; }
.lcp-meta { display:flex; gap:16px; flex-wrap:wrap; }
.lcp-meta span { font-size:12px; color:var(--text3); display:flex; align-items:center; gap:5px; }
.lcp-meta i { color:var(--accent); }

.lcp-actions { display:flex; gap:10px; flex-wrap:wrap; align-items:center; }
.lcp-btn { display:flex; align-items:center; gap:7px; padding:10px 18px; border-radius:10px; border:none; font-family:Tajawal,sans-serif; font-size:13px; font-weight:700; cursor:pointer; transition:all .2s; }
.lcp-btn-primary { background:linear-gradient(135deg,#3b5bdb,#4361ee); color:#fff; }
.lcp-btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 20px rgba(59,91,219,.4); }
.lcp-btn-ai { background:linear-gradient(135deg,#7c3aed,#9c40ff); color:#fff; }
.lcp-btn-ai:hover { transform:translateY(-2px); box-shadow:0 8px 20px rgba(124,58,237,.4); }
.lcp-btn-tts { background:linear-gradient(135deg,#059669,#10b981); color:#fff; }
.lcp-btn-tts:hover { transform:translateY(-2px); box-shadow:0 8px 20px rgba(16,185,129,.4); }
.lcp-btn-load { background:var(--surface2); border:1.5px solid var(--border); color:var(--text2); }
.lcp-btn-load:hover { background:var(--hover); color:var(--text1); }
.lcp-loaded-badge { display:flex; align-items:center; gap:6px; padding:8px 14px; border-radius:10px; background:rgba(16,185,129,.12); color:#10b981; border:1px solid rgba(16,185,129,.25); font-size:13px; font-weight:700; }

.lcp-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.lcp-card { background:var(--surface2); border:1px solid var(--border); border-radius:14px; overflow:hidden; }
.lcp-card-objectives { border-top:3px solid #3b5bdb; }
.lcp-card-keypoints  { border-top:3px solid #7c3aed; }
.lcp-card-activities { border-top:3px solid #10b981; }
.lcp-card-syllabus   { border-top:3px solid #f59e0b; }
.lcp-card-header { padding:12px 16px 10px; font-size:12px; font-weight:800; color:var(--text2); display:flex; align-items:center; gap:8px; border-bottom:1px solid var(--border); }
.lcp-card-header i { color:var(--accent); }
.lcp-list { list-style:none; margin:0; padding:12px 16px; display:flex; flex-direction:column; gap:8px; }
.lcp-list li { display:flex; align-items:flex-start; gap:9px; font-size:12px; color:var(--text2); line-height:1.5; }
.lcp-list li i { color:var(--accent); margin-top:2px; flex-shrink:0; font-size:11px; }
.lcp-keypoints li { gap:10px; }
.kp-num { width:20px; height:20px; border-radius:50%; background:var(--accent); color:#fff; font-size:10px; font-weight:800; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.lcp-syllabus-list { padding:8px 12px; display:flex; flex-direction:column; gap:4px; max-height:220px; overflow-y:auto; }
.lcp-syl-item { display:flex; align-items:center; gap:10px; padding:7px 10px; border-radius:8px; cursor:pointer; font-size:12px; color:var(--text2); transition:background .15s; }
.lcp-syl-item:hover { background:var(--hover); }
.lcp-syl-active { background:rgba(59,91,219,.1); color:var(--accent); font-weight:700; }
.lcp-syl-num { width:20px; height:20px; border-radius:6px; background:var(--surface1); border:1px solid var(--border); font-size:10px; font-weight:700; display:flex; align-items:center; justify-content:center; color:var(--text3); flex-shrink:0; }
.lcp-syl-active .lcp-syl-num { background:var(--accent); color:#fff; border-color:var(--accent); }

.lcp-nav { display:flex; justify-content:space-between; align-items:center; padding-top:8px; border-top:1px solid var(--border); gap:12px; }
.lcp-nav-btn { display:flex; align-items:center; gap:8px; padding:9px 16px; border-radius:10px; border:1.5px solid var(--border); background:var(--surface2); color:var(--text2); font-family:Tajawal,sans-serif; font-size:12px; cursor:pointer; transition:all .2s; max-width:48%; text-align:right; }
.lcp-nav-btn:hover { background:var(--hover); color:var(--text1); border-color:var(--accent); }
.lcp-nav-next { flex-direction:row-reverse; text-align:left; }

/* ════════════════════════════════════════════════════════════
   TEACHING TOOLS SECTION
   ════════════════════════════════════════════════════════════ */
.tools-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:18px; }
.tool-feature-card { background:var(--surface2); border:1px solid var(--border); border-radius:18px; padding:24px; display:flex; flex-direction:column; gap:14px; position:relative; overflow:hidden; transition:all .25s cubic-bezier(.4,0,1,1); cursor:default; }
.tool-feature-card::after { content:''; position:absolute; top:0; right:0; left:0; height:4px; border-radius:18px 18px 0 0; }
.tfc-blue::after   { background:linear-gradient(90deg,#3b5bdb,#4c6ef5); }
.tfc-purple::after { background:linear-gradient(90deg,#7c3aed,#9c40ff); }
.tfc-green::after  { background:linear-gradient(90deg,#059669,#10b981); }
.tfc-orange::after { background:linear-gradient(90deg,#d97706,#fbbf24); }
.tfc-red::after    { background:linear-gradient(90deg,#dc2626,#f87171); }
.tfc-cyan::after   { background:linear-gradient(90deg,#0284c7,#06b6d4); }
.tool-feature-card:hover { transform:translateY(-4px); box-shadow:0 16px 40px rgba(0,0,0,.25); border-color:rgba(99,102,241,.3); }
.tfc-icon { width:52px; height:52px; border-radius:14px; display:flex; align-items:center; justify-content:center; font-size:22px; }
.tfc-blue .tfc-icon   { background:rgba(59,91,219,.15); color:#4c6ef5; }
.tfc-purple .tfc-icon { background:rgba(124,58,237,.15); color:#9c40ff; }
.tfc-green .tfc-icon  { background:rgba(16,185,129,.15); color:#10b981; }
.tfc-orange .tfc-icon { background:rgba(245,158,11,.15); color:#fbbf24; }
.tfc-red .tfc-icon    { background:rgba(239,68,68,.15); color:#f87171; }
.tfc-cyan .tfc-icon   { background:rgba(6,182,212,.15); color:#06b6d4; }
.tool-feature-card h3 { font-size:17px; font-weight:800; color:var(--text1); margin:0; }
.tool-feature-card p  { font-size:13px; color:var(--text3); margin:0; line-height:1.65; flex:1; }
.tfc-features { display:flex; flex-wrap:wrap; gap:7px; }
.tfc-features span { font-size:11px; background:var(--surface1); border:1px solid var(--border); border-radius:7px; padding:3px 9px; color:var(--text3); display:flex; align-items:center; gap:5px; }
.tfc-features i { color:#10b981; font-size:9px; }
.tfc-btn { border:none; padding:10px 0; border-radius:10px; font-family:Tajawal,sans-serif; font-size:13px; font-weight:700; cursor:pointer; transition:all .2s; width:100%; color:#fff; }
.tfc-blue .tfc-btn   { background:linear-gradient(135deg,#3b5bdb,#4361ee); }
.tfc-purple .tfc-btn { background:linear-gradient(135deg,#7c3aed,#9c40ff); }
.tfc-green .tfc-btn  { background:linear-gradient(135deg,#059669,#10b981); }
.tfc-orange .tfc-btn { background:linear-gradient(135deg,#d97706,#f59e0b); }
.tfc-red .tfc-btn    { background:linear-gradient(135deg,#dc2626,#ef4444); }
.tfc-cyan .tfc-btn   { background:linear-gradient(135deg,#0284c7,#06b6d4); }
.tfc-btn:hover { filter:brightness(1.12); transform:translateY(-1px); box-shadow:0 6px 16px rgba(0,0,0,.25); }

/* ════════════════════════════════════════════════════════════
   TTS BAR — Premium redesign with waveform + queue + progress
   ════════════════════════════════════════════════════════════ */
.tts-bar { position:fixed; bottom:20px; left:50%; transform:translateX(-50%); background:rgba(15,17,26,.92); backdrop-filter:blur(20px); border:1px solid rgba(99,102,241,.35); border-radius:60px; padding:10px 16px 10px 14px; display:flex; align-items:center; gap:12px; z-index:9999; min-width:320px; max-width:520px; box-shadow:0 8px 32px rgba(0,0,0,.5); transition:all .3s cubic-bezier(.4,0,1,1); }
.tts-bar.hidden { display:none; }
.tts-waveform { display:flex; align-items:center; gap:2px; height:26px; flex-shrink:0; }
.tts-waveform span { display:block; width:3px; background:linear-gradient(to top,#3b5bdb,#7c3aed); border-radius:3px; animation:waveBar 1s ease-in-out infinite; }
.tts-waveform span:nth-child(1){ height:8px; animation-delay:0s; }
.tts-waveform span:nth-child(2){ height:18px; animation-delay:.1s; }
.tts-waveform span:nth-child(3){ height:24px; animation-delay:.2s; }
.tts-waveform span:nth-child(4){ height:16px; animation-delay:.3s; }
.tts-waveform span:nth-child(5){ height:22px; animation-delay:.15s; }
.tts-waveform span:nth-child(6){ height:10px; animation-delay:.25s; }
@keyframes waveBar { 0%,100%{ transform:scaleY(.3); opacity:.5 } 50%{ transform:scaleY(1); opacity:1 } }
.tts-info { flex:1; display:flex; flex-direction:column; gap:5px; min-width:0; overflow:hidden; }
.tts-text { font-size:12px; color:rgba(255,255,255,.85); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; direction:rtl; }
.tts-progress-track { height:3px; background:rgba(255,255,255,.15); border-radius:3px; overflow:hidden; }
.tts-progress-fill { height:100%; background:linear-gradient(90deg,#3b5bdb,#7c3aed,#06b6d4); border-radius:3px; width:0%; transition:width .08s linear; }
.tts-queue-badge { width:20px; height:20px; border-radius:50%; background:linear-gradient(135deg,#f59e0b,#ef4444); color:#fff; font-size:10px; font-weight:800; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.tts-stop { background:rgba(239,68,68,.18); border:1px solid rgba(239,68,68,.3); color:#f87171; border-radius:50%; width:30px; height:30px; display:flex; align-items:center; justify-content:center; cursor:pointer; flex-shrink:0; transition:all .2s; font-size:11px; }
.tts-stop:hover { background:rgba(239,68,68,.35); }

/* ════════════════════════════════════════════════════════════
   ENHANCED NODE VISUALS
   ════════════════════════════════════════════════════════════ */
.board-node { border-radius:14px; background:var(--node-bg,rgba(17,24,39,.92)); backdrop-filter:blur(16px); border:1px solid rgba(255,255,255,.09); box-shadow:0 4px 20px rgba(0,0,0,.35), 0 1px 3px rgba(0,0,0,.4); cursor:grab; position:absolute; transition:box-shadow .2s, filter .2s; transform-origin:top right; animation:nodeIn .3s cubic-bezier(.34,1.56,.64,1) both; }
.board-node:hover { box-shadow:0 8px 32px rgba(0,0,0,.45), 0 0 0 1px rgba(99,102,241,.2); filter:drop-shadow(0 0 8px rgba(99,102,241,.25)); }
.board-node.selected { box-shadow:0 0 0 2px var(--accent), 0 12px 40px rgba(0,0,0,.5), 0 0 20px rgba(59,91,219,.25); }
.board-node.node-shimmer { animation:nodeIn .3s cubic-bezier(.34,1.56,.64,1) both, nodeGlow .8s ease-out .1s; }
@keyframes nodeGlow { 0%{box-shadow:0 0 0 4px rgba(99,102,241,.6),0 0 30px rgba(99,102,241,.4)} 100%{box-shadow:0 4px 20px rgba(0,0,0,.35)} }
@keyframes nodeIn { 0%{opacity:0;transform:scale(.6) rotate(-3deg)} 70%{transform:scale(1.05) rotate(.5deg)} 100%{opacity:1;transform:scale(1) rotate(0)} }

/* Node type badge */
.node-type-badge { position:absolute; top:-9px; right:10px; font-size:9px; font-weight:800; color:#fff; border-radius:10px; padding:2px 8px; pointer-events:none; opacity:0; transition:opacity .2s; z-index:10; letter-spacing:.3px; text-transform:uppercase; }
.board-node.selected .node-type-badge { opacity:1; }

/* Node controls toolbar */
.node-ctrl { position:absolute; top:-38px; right:0; background:rgba(10,12,20,.9); backdrop-filter:blur(12px); border:1px solid rgba(255,255,255,.1); border-radius:10px; padding:4px 6px; display:flex; gap:4px; opacity:0; pointer-events:none; transition:opacity .15s; z-index:20; white-space:nowrap; }
.board-node:hover .node-ctrl, .board-node.selected .node-ctrl { opacity:1; pointer-events:all; }
.nctrl-btn { background:transparent; border:none; color:rgba(255,255,255,.65); width:26px; height:26px; border-radius:7px; cursor:pointer; font-size:11px; display:flex; align-items:center; justify-content:center; transition:all .15s; }
.nctrl-btn:hover { background:rgba(255,255,255,.1); color:#fff; }
.nctrl-btn.del:hover { background:rgba(239,68,68,.2); color:#f87171; }
.nctrl-btn.speak-active { color:#10b981; animation:speakPulse .5s ease-in-out infinite alternate; }
@keyframes speakPulse { from{opacity:.6} to{opacity:1} }

/* Resize handle */
.resize-handle { position:absolute; bottom:4px; left:4px; width:14px; height:14px; cursor:nwse-resize; opacity:0; transition:opacity .2s; z-index:15; }
.resize-handle::before { content:''; position:absolute; bottom:0; left:0; width:10px; height:10px; border-bottom:2px solid var(--accent); border-left:2px solid var(--accent); border-radius:0 0 0 4px; }
.board-node:hover .resize-handle { opacity:.7; }

/* Title node */
.node-title { background:linear-gradient(135deg,#3b5bdb,#4361ee,#7c3aed); border-radius:12px; padding:18px 22px; position:relative; overflow:hidden; }
.node-title::before { content:''; position:absolute; top:0; right:0; left:0; height:1px; background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent); }
.node-title::after  { content:''; position:absolute; top:4px; right:4px; width:80px; height:80px; background:radial-gradient(circle,rgba(255,255,255,.12),transparent 70%); pointer-events:none; }
.node-title h2, .node-title h3 { color:#fff; margin:0; font-weight:900; text-shadow:0 1px 8px rgba(0,0,0,.4); }

/* Summary node */
.node-summary { border-right:4px solid #10b981; padding:16px 18px; }
.node-summary::before { content:'ملخص'; position:absolute; top:8px; left:10px; font-size:9px; color:#10b981; font-weight:800; opacity:.6; text-transform:uppercase; letter-spacing:.5px; }

/* Key points node */
.node-keypoints { padding:14px 16px; }
.node-keypoints ul, .node-keypoints ol { margin:0; padding-right:18px; }
.node-keypoints li { font-size:13px; line-height:1.7; color:var(--node-text,rgba(255,255,255,.88)); }
.node-keypoints li::marker { color:var(--accent); }

/* Quiz node */
.node-quiz { border-top:3px solid #7c3aed; padding:16px; }
.node-quiz::before { content:'اختبار'; position:absolute; top:6px; left:10px; font-size:9px; color:#9c40ff; font-weight:800; opacity:.7; }

/* Flashcard node */
.node-flashcard { perspective:1000px; }
.flashcard-inner { position:relative; transition:transform .5s; transform-style:preserve-3d; cursor:pointer; }
.flashcard-inner:hover { transform:rotateY(180deg); }
.flashcard-front, .flashcard-back { backface-visibility:hidden; padding:16px; border-radius:10px; }
.flashcard-back { transform:rotateY(180deg); background:linear-gradient(135deg,rgba(59,91,219,.2),rgba(124,58,237,.2)); }

/* Definition node */
.node-definition { border-right:4px solid #3b5bdb; padding:14px 18px; }

/* Math/Formula node */
.node-math, .node-formula { background:linear-gradient(135deg,rgba(15,23,42,.95),rgba(30,41,59,.9)); border:1px solid rgba(99,102,241,.3); border-radius:12px; padding:16px; font-family:'Courier New',monospace; }

/* Timeline node */
.node-timeline { padding:14px 16px; }
.timeline-item { display:flex; align-items:flex-start; gap:12px; padding:8px 0; position:relative; }
.timeline-item:not(:last-child)::after { content:''; position:absolute; right:11px; top:28px; bottom:-8px; width:2px; background:linear-gradient(to bottom,var(--accent),transparent); }
.timeline-dot { width:22px; height:22px; border-radius:50%; background:linear-gradient(135deg,var(--accent),#7c3aed); display:flex; align-items:center; justify-content:center; font-size:10px; color:#fff; font-weight:800; flex-shrink:0; }

/* Sticky note */
.node-sticky { background:linear-gradient(135deg,#fef3c7,#fde68a) !important; border:none !important; position:relative; }
.node-sticky::after { content:''; position:absolute; top:0; left:0; border-width:16px; border-style:solid; border-color:transparent transparent rgba(217,119,6,.25) transparent; }
.node-sticky * { color:#78350f !important; }

/* Compare / Pros-Cons node */
.node-compare, .node-proscons { padding:14px; }

/* Quote node */
.node-quote { padding:20px 18px; position:relative; }
.node-quote::before { content:'\201C'; position:absolute; top:-8px; right:8px; font-size:60px; color:rgba(99,102,241,.25); font-family:Georgia,serif; line-height:1; pointer-events:none; }

/* Stat node */
.node-stat { background:linear-gradient(135deg,rgba(59,91,219,.2),rgba(124,58,237,.15)); border:1px solid rgba(99,102,241,.3); border-radius:12px; padding:18px; text-align:center; }
.stat-value { font-size:36px; font-weight:900; background:linear-gradient(135deg,#60a5fa,#a78bfa); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }

/* QA node */
.node-qa { border-top:3px solid #06b6d4; padding:14px 16px; }

/* Alert variants */
.node-tip      { border-right:4px solid #10b981; background:rgba(16,185,129,.06) !important; }
.node-important{ border-right:4px solid #ef4444; background:rgba(239,68,68,.06) !important; }
.node-warning  { border-right:4px solid #f59e0b; background:rgba(245,158,11,.06) !important; }

/* Steps node */
.node-steps .step-item { display:flex; gap:12px; align-items:flex-start; padding:8px 0; border-bottom:1px solid rgba(255,255,255,.05); }
.node-steps .step-num { width:26px; height:26px; border-radius:8px; background:linear-gradient(135deg,var(--accent),#7c3aed); color:#fff; font-weight:800; font-size:12px; display:flex; align-items:center; justify-content:center; flex-shrink:0; }

/* Mindmap card */
.node-mindmap-card { padding:12px 16px; }
.mindmap-card-header { font-weight:800; font-size:14px; margin-bottom:8px; color:rgba(255,255,255,.9); display:flex; align-items:center; gap:8px; }
.mindmap-card-header::before { content:''; width:8px; height:8px; border-radius:50%; background:var(--accent); display:inline-block; flex-shrink:0; }

/* Poster node */
.node-poster { padding:0; overflow:hidden; border-radius:14px; }

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */
@media (max-width:900px) {
  .lessons-browser { grid-template-columns:1fr; grid-template-rows:300px 1fr; }
  .lb-sidebar { border-left:none; border-bottom:1px solid var(--border); }
  .lcp-grid { grid-template-columns:1fr; }
}
@media (max-width:640px) {
  .quick-actions-grid { grid-template-columns:1fr 1fr; }
  .tools-grid { grid-template-columns:1fr; }
  .today-lesson-banner { flex-direction:column; align-items:flex-start; }
  .lcp-inner { padding:16px; }
  .lcp-actions { flex-wrap:wrap; }
}