:root{
  --navy:#12384B; --navy-dark:#0C2733; --teal:#1B6E7A; --gold:#F2A93B;
  --bg:#F5F7FA; --surface:#FFFFFF; --text:#182430; --muted:#6B7A88;
  --border:#E4E9EF; --success:#2E9E6D; --danger:#D65A4A;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){ --bg:#0E1620; --surface:#162232; --text:#EAF0F6; --muted:#8FA0B3; --border:#233246; }
}
:root[data-theme="dark"]{ --bg:#0E1620; --surface:#162232; --text:#EAF0F6; --muted:#8FA0B3; --border:#233246; }
*{box-sizing:border-box;margin:0}
html,body{height:100%}
body{font-family:'Tajawal',Tahoma,sans-serif;background:var(--bg);color:var(--text);direction:rtl;display:flex;min-height:100%}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

.sidebar{width:230px;background:var(--navy);color:#fff;display:flex;flex-direction:column;flex-shrink:0;position:sticky;top:0;height:100vh;padding:18px 14px;overflow-y:auto}
.logo{display:flex;align-items:center;gap:10px;padding:6px 8px;font-weight:900;font-size:19px}
.logo .dot{width:11px;height:11px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(242,169,59,.25)}
.role-tag{font-size:11.5px;color:#9FC1CC;padding:0 8px 18px}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:#C7D6DE;font-size:14.5px;margin-bottom:2px}
.nav-item:hover{background:rgba(255,255,255,.06)}
.nav-item.active{background:var(--teal);color:#fff;font-weight:700}
.sub-space{flex:1}
.sidebar-foot{font-size:12px;color:#7F94A0;padding:10px 12px;border-top:1px solid rgba(255,255,255,.1)}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 26px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5}
.topbar h1{font-size:18px;font-weight:700}
.top-user{display:flex;align-items:center;gap:14px;font-size:13.5px}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--teal),var(--navy));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px}
.icon-btn{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.icon-btn:hover{background:var(--bg)}

.content{padding:24px 26px 90px;max-width:1080px;width:100%;margin:0 auto}
@media(max-width:768px){.content{padding:18px 16px 90px}}

.hero-card{background:linear-gradient(120deg,var(--navy),var(--teal));color:#fff;border-radius:18px;padding:22px 26px;margin-bottom:22px}
.hero-card h2{font-size:21px;margin-bottom:4px}
.hero-card .meta{font-size:13.5px;color:#D9E7EC;display:flex;gap:16px;flex-wrap:wrap;margin-top:8px}

.stat-row{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-bottom:26px}
@media(max-width:900px){.stat-row{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px 16px}
.stat b{font-size:22px;display:block}
.stat span{font-size:12.5px;color:var(--muted)}
.stat.accent{border-color:var(--gold)}

.section-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px;flex-wrap:wrap;gap:8px}
.section-head h3{font-size:17px;font-weight:700}
.section-head a{font-size:13px;color:var(--teal);font-weight:700}

.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;margin-bottom:28px}
.course-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:18px;display:block;color:var(--text);transition:transform .12s,box-shadow .12s}
.course-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(18,56,75,.1)}
.course-card h4{font-size:16px;margin-bottom:2px}
.course-card .teacher{font-size:12.5px;color:var(--muted)}
.course-card .facts{font-size:12px;color:var(--muted);margin:10px 0 6px}
.progress-bar{height:7px;border-radius:5px;background:var(--border);overflow:hidden}
.progress-bar i{display:block;height:100%;background:var(--gold);border-radius:5px}

.tabbar{display:flex;gap:6px;margin-bottom:18px;flex-wrap:wrap}
.tabbar a{padding:8px 16px;border-radius:9px;font-size:13.5px;background:var(--bg);color:var(--muted)}
.tabbar a.active{background:var(--teal);color:#fff;font-weight:700}

.lecture-row{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px 16px;margin-bottom:10px;color:var(--text)}
.lecture-row:hover{border-color:var(--teal)}
.lec-num{width:38px;height:38px;border-radius:10px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--teal);flex-shrink:0}
.lecture-row .info{flex:1;min-width:0}
.lecture-row h4{font-size:15px}
.lecture-row .info span{font-size:12.5px;color:var(--muted)}
.status-pill{font-size:11.5px;padding:4px 10px;border-radius:20px;font-weight:700;flex-shrink:0}
.status-done{background:#DFF3E8;color:var(--success)}
.status-todo{background:#EAF1F6;color:var(--teal)}
.status-locked{background:var(--bg);color:var(--muted)}
:root[data-theme="dark"] .status-done{background:#173327}
:root[data-theme="dark"] .status-todo{background:#12303a}
.pill{font-size:11px;padding:3px 10px;border-radius:20px;font-weight:700}
.pill.active{background:#DFF3E8;color:var(--success)}
.pill.expired{background:#FBE3E0;color:var(--danger)}

.exam-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px 18px;display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;flex-wrap:wrap;gap:10px}
.exam-card .facts{display:flex;gap:16px;font-size:13px;color:var(--muted);margin-top:5px}

.file-chip{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 14px;margin-bottom:8px}
.file-chip span{flex:1;font-size:14px}

.btn{background:var(--teal);color:#fff;padding:9px 18px;border-radius:10px;font-size:14px;font-weight:700;display:inline-block;width:auto}
.btn:hover{background:var(--navy)}
.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn.gold{background:var(--gold);color:#3A2400}
.btn.danger{background:transparent;color:var(--danger);border:1px solid var(--danger)}
.btn.sm{padding:6px 12px;font-size:12.5px}
.btn.block{width:100%;text-align:center}

.field{margin-bottom:12px}
.field label{font-size:13px;color:var(--muted);display:block;margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:9px 12px;border-radius:9px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-family:inherit;font-size:14px}
.field textarea{resize:vertical;min-height:60px}
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px;margin-bottom:26px}
.form-row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.form-row .field{margin-bottom:0}

table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;margin-bottom:24px}
th,td{padding:12px 14px;text-align:right;font-size:13.5px;border-bottom:1px solid var(--border)}
th{color:var(--muted);font-weight:700;font-size:12px;background:var(--bg)}
tr:last-child td{border-bottom:none}
tr.clickable{cursor:pointer}
tr.clickable:hover{background:var(--bg)}

.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(max-width:600px){.info-grid{grid-template-columns:1fr}}
.info-item{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 16px}
.info-item span{font-size:12px;color:var(--muted);display:block;margin-bottom:3px}
.info-item b{font-size:14.5px}

.card-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin-bottom:24px}
.mini-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px}
.mini-card h4{font-size:15px;margin-bottom:4px}
.mini-card span{font-size:12.5px;color:var(--muted);display:block;margin-bottom:10px}
.mini-actions{display:flex;gap:6px}

.error-box{background:#FBE3E0;color:var(--danger);border-radius:10px;padding:10px 14px;font-size:13.5px;margin-bottom:16px}
.success-box{background:#DFF3E8;color:var(--success);border-radius:10px;padding:10px 14px;font-size:13.5px;margin-bottom:16px}
.protect-note{font-size:12px;color:var(--danger);background:#FBE3E0;border-radius:10px;padding:8px 12px;margin-bottom:14px}

.player{background:#0C2733;border-radius:16px;aspect-ratio:16/8;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:6px;position:relative;overflow:hidden;user-select:none}
.watermark{position:absolute;font-size:12px;color:rgba(255,255,255,.55);font-weight:700;top:12px;left:12px;transition:top .4s,left .4s}
.wm-bar{text-align:center;font-size:11px;color:var(--muted);margin-bottom:18px;font-family:monospace}

.wrap{max-width:480px;margin:60px auto;padding:0 16px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:28px;box-shadow:0 14px 30px rgba(18,56,75,.08)}
.muted{color:var(--muted);font-size:13.5px;margin-bottom:20px}
.steps{display:flex;gap:6px;margin-bottom:22px}
.steps span{flex:1;height:5px;border-radius:4px;background:var(--border)}
.steps span.done{background:var(--gold)}
.role-tabs{display:flex;gap:8px;margin-bottom:20px}
.role-tabs a{flex:1;text-align:center;padding:9px;border-radius:9px;border:1px solid var(--border);font-size:13.5px;color:var(--muted)}
.role-tabs a.active{background:var(--teal);color:#fff;border-color:var(--teal);font-weight:700}

.bottom-nav{display:none}
@media(max-width:768px){
  .sidebar{display:none}
  .bottom-nav{display:flex;position:fixed;bottom:0;right:0;left:0;background:var(--surface);border-top:1px solid var(--border);padding:8px 4px calc(8px + env(safe-area-inset-bottom,0px));justify-content:space-around;z-index:10}
  .bottom-nav .nav-item{flex-direction:column;font-size:10px;color:var(--muted);gap:3px;padding:4px}
  .bottom-nav .nav-item.active{background:none;color:var(--teal)}
}