/* ===== متغيرات ===== */
:root{
  --bg:#0f1222; --surface:#ffffff; --muted:#6b7280; --text:#1f2433;
  --primary:#5b4bff; --primary-700:#4536d6; --accent:#10b981;
  --border:#e6e8f0; --soft:#f5f6fb; --danger:#e11d48; --warn:#f59e0b;
  --radius:14px; --shadow:0 8px 30px rgba(20,20,60,.08);
  --max:1140px;
}
/* ===== الوضع الداكن (Dark mode) =====
   Only the surface/text/border/background tokens flip — the brand colors stay,
   so every component that already uses these variables turns dark automatically. */
[data-theme="dark"]{
  --surface:#1b2130; --text:#e7e9f0; --muted:#9aa3b5;
  --border:#2c3344; --soft:#10141f;
  --shadow:0 8px 30px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Tajawal',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--text); background:var(--soft); line-height:1.7;
  transition:background-color .2s ease, color .2s ease;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin-inline:auto;padding-inline:20px;width:100%}
.page{padding-block:32px;min-height:60vh}
h1,h2,h3{line-height:1.3;margin:.2em 0 .5em}

/* Secondary-text utilities — used across the site (e.g. <p class="muted">, <p class="hint">).
   Bug fix: these previously only existed scoped (.field .hint, .upload-progress-meta .muted),
   so the same classes rendered at full text colour everywhere else. */
.muted{color:var(--muted)}
.hint{color:var(--muted);font-size:.85rem}

/* ===== الهيدر ===== */
.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:1.25rem;color:var(--text)}
.brand-logo{width:30px;height:30px;border-radius:7px;display:block;flex:0 0 auto}
.brand:hover{text-decoration:none}
.nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.nav-links a{color:var(--text);font-weight:500}
.nav-toggle{display:none;background:none;border:0;font-size:1.5rem;cursor:pointer}

/* ===== الأزرار ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#fff;border:0;border-radius:10px;
  padding:12px 20px;font-weight:700;font-family:inherit;font-size:1rem;cursor:pointer;transition:.15s}
.btn:hover{background:var(--primary-700);text-decoration:none;transform:translateY(-1px)}
.btn-sm{padding:8px 14px;font-size:.9rem;border-radius:8px}
.btn-block{display:flex;width:100%}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-ghost{background:var(--soft);color:var(--text)}
[data-theme="dark"] .btn-ghost{background:var(--surface);border:1px solid var(--border)}
.btn-danger{background:var(--danger)}
.btn-success{background:var(--accent)}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}

/* ===== فلاش ===== */
.flash{padding:12px 16px;border-radius:10px;margin-bottom:14px;font-weight:500}
.flash-success{background:#e7f9f1;color:#0a7a52;border:1px solid #b7ebd6}
.flash-error{background:#fdeaef;color:#b21240;border:1px solid #f7c2d2}
.flash-info{background:#eaf0ff;color:#3a3ad6;border:1px solid #cdd8ff}
.flash-warn{background:#fff5e6;color:#9a6700;border:1px solid #ffe2b3}
[data-theme="dark"] .flash-success{background:#0f2b22;color:#5fe0b0;border-color:#1c5340}
[data-theme="dark"] .flash-error{background:#33121f;color:#f48fb1;border-color:#5c1f33}
[data-theme="dark"] .flash-info{background:#161f3d;color:#aebbff;border-color:#2b3a6b}
[data-theme="dark"] .flash-warn{background:#2e2410;color:#ffce7a;border-color:#5a4418}

/* ===== البطاقات والشبكة ===== */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

/* بطاقة كورس */
.course-card{overflow:hidden;display:flex;flex-direction:column;transition:.18s}
.course-card:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(20,20,60,.14)}
.course-card .thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#6a5cff,#9b8bff);display:flex;align-items:center;justify-content:center;color:#fff;font-size:2.4rem;overflow:hidden}
.course-card .thumb img{width:100%;height:100%;object-fit:cover}
.course-card .body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.course-card h3{margin:0;font-size:1.15rem}
.course-card .desc{color:var(--muted);font-size:.95rem;flex:1}
.course-card .meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto}
.price{font-weight:800;color:var(--primary);font-size:1.1rem}
.price.owned{color:var(--accent)}
.badge{display:inline-block;background:var(--soft);color:var(--muted);border-radius:999px;padding:3px 10px;font-size:.78rem;font-weight:600}
.badge-green{background:#e7f9f1;color:#0a7a52}
.badge-amber{background:#fff5e6;color:#9a6700}
.badge-red{background:#fde8ec;color:#b3123a}
[data-theme="dark"] .badge-green{background:#0f2b22;color:#5fe0b0}
[data-theme="dark"] .badge-amber{background:#2e2410;color:#ffce7a}
[data-theme="dark"] .badge-red{background:#33121f;color:#f48fb1}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#1b1840,#3a2db0);color:#fff;border-radius:22px;padding:40px 30px;text-align:center;margin-bottom:28px}
.hero h1{font-size:2.05rem;margin:0 0 10px;color:#fff}
.hero p{font-size:1.08rem;opacity:.9;max-width:680px;margin:0 auto 18px}
.hero .btn{background:#fff;color:var(--primary)}
.hero .btn:hover{background:#f0f0ff}

/* ===== العناوين ===== */
.section-title{font-size:1.6rem;margin:40px 0 18px;display:flex;align-items:center;gap:10px}

/* ===== خطط الاشتراك ===== */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px}
.plan{padding:28px;text-align:center;position:relative}
.plan.popular{border:2px solid var(--primary)}
.plan .pill{position:absolute;top:-12px;inset-inline-start:50%;transform:translateX(50%);background:var(--primary);color:#fff;padding:4px 14px;border-radius:999px;font-size:.8rem;font-weight:700}
.plan .amount{font-size:2.2rem;font-weight:800;color:var(--text);margin:10px 0}
.plan .amount span{font-size:1rem;color:var(--muted);font-weight:500}
.plan ul{list-style:none;padding:0;margin:18px 0;text-align:start}
.plan li{padding:7px 0;border-bottom:1px dashed var(--border)}
.plan li::before{content:"✓";color:var(--accent);font-weight:800;margin-inline-end:8px}

/* ===== النماذج ===== */
.auth-wrap{max-width:430px;margin:30px auto}
.form-card{padding:30px}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;margin-bottom:6px}
.field input,.field textarea,.field select{
  width:100%;padding:11px 13px;border:1.5px solid var(--border);border-radius:10px;
  font-family:inherit;font-size:1rem;background:var(--surface);color:var(--text)}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--primary)}
.field .hint{color:var(--muted);font-size:.85rem;margin-top:4px}
.form-foot{margin-top:10px;text-align:center;color:var(--muted)}
.inline{display:flex;gap:10px;align-items:center}

/* ===== صفحة الكورس / التعلّم ===== */
.course-head{display:grid;grid-template-columns:1.4fr 1fr;gap:28px;align-items:start}
/* Rich text authored by admins (course description + lesson content): links + basic HTML */
.course-desc,.lesson-content{line-height:1.9}
.course-desc p,.lesson-content p{margin:0 0 10px}
.course-desc a,.lesson-content a{color:var(--primary);text-decoration:underline}
.course-desc ul,.course-desc ol,.lesson-content ul,.lesson-content ol{padding-inline-start:22px;margin:10px 0}
.course-desc h3,.course-desc h4,.lesson-content h3,.lesson-content h4{margin:14px 0 8px}
.lesson-content p:last-child,.lesson-content ul:last-child,.lesson-content ol:last-child{margin-bottom:0}
.lesson-list{list-style:none;padding:0;margin:0}
.lesson-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 16px;border:1px solid var(--border);border-radius:10px;margin-bottom:8px;background:var(--surface)}
.lesson-list li .lock{color:var(--muted)}
.lesson-list a{color:var(--text);font-weight:500;flex:1}
/* Make the whole lesson row clickable (title + free-preview badge), with a hover highlight.
   Negative margins stretch the link over the li's padding so the full area is a click target. */
.lesson-list a.lesson-link{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:-13px -16px;padding:13px 16px;border-radius:10px}
.lesson-list a.lesson-link:hover{background:var(--soft)}
.lesson-list a.lesson-link .lesson-name{flex:1}

.learn-layout{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start}
.video-frame{aspect-ratio:16/9;background:#000;border-radius:14px;overflow:hidden;width:100%}
.video-frame iframe,.video-frame video{width:100%;height:100%;border:0}
.lessons-side{position:sticky;top:80px}
.lessons-side .lesson-item{display:flex;align-items:center;gap:10px;padding:11px 13px;border-radius:10px;cursor:pointer;color:var(--text)}
.lessons-side .lesson-item:hover{background:var(--soft);text-decoration:none}
.lessons-side .lesson-item.active{background:#eef0ff;font-weight:700}
[data-theme="dark"] .lessons-side .lesson-item.active{background:rgba(91,75,255,.22)}
.lessons-side .lesson-item.done .tick{color:var(--accent)}
.progress-bar{height:8px;background:var(--border);border-radius:999px;overflow:hidden;margin:8px 0 16px}
.progress-bar > i{display:block;height:100%;background:var(--accent);border-radius:999px}

/* ===== الجداول والإدارة ===== */
.table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.table th,.table td{padding:12px 14px;text-align:start;border-bottom:1px solid var(--border)}
.table th{background:var(--soft);font-weight:700;font-size:.9rem}
.table tr:last-child td{border-bottom:0}
.table .actions{display:flex;gap:8px}

.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start;padding-block:24px}
.admin-sidebar{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:10px;position:sticky;top:80px}
.admin-sidebar a{display:block;padding:11px 14px;border-radius:9px;color:var(--text);font-weight:600}
.admin-sidebar a:hover{background:var(--soft);text-decoration:none}
.admin-content{min-width:0}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:16px;margin-bottom:24px}
.stat{padding:20px;text-align:center}
.stat .num{font-size:2rem;font-weight:800;color:var(--primary)}
.stat .label{color:var(--muted)}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;flex-wrap:wrap}

/* ===== الفوتر ===== */
.site-footer{background:var(--surface);border-top:1px solid var(--border);margin-top:48px;padding-block:24px;color:var(--muted);text-align:center}

/* ===== استجابة ===== */
@media(max-width:920px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .course-head,.learn-layout,.admin-layout{grid-template-columns:1fr}
  .lessons-side{position:static}
  .admin-sidebar{position:static}
}
@media(max-width:640px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .nav-toggle{display:block}
  .nav-links{display:none;width:100%;flex-direction:column;align-items:flex-start;gap:8px;padding-bottom:10px}
  body.nav-open .nav-links{display:flex}
  .hero{padding:40px 20px}
  .hero h1{font-size:1.8rem}
}

/* ---- Video upload progress bar ---- */
.upload-progress{margin:14px 0}
.upload-progress-track{height:14px;background:var(--soft);border:1px solid var(--border);
  border-radius:999px;overflow:hidden}
.upload-progress-fill{display:block;height:100%;width:0;border-radius:999px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transition:width .2s ease}
.upload-progress-meta{display:flex;justify-content:space-between;align-items:center;
  margin-top:6px;font-size:.9rem;font-weight:600;color:var(--text)}
.upload-progress-meta .muted{color:var(--muted);font-weight:400}

/* ===== تبديل الوضع الليلي (Theme) ===== */
/* Quick toggle in the header */
.theme-toggle-form{display:inline-flex;margin:0}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;
  background:none;border:0;cursor:pointer;font-size:1.2rem;line-height:1;
  padding:6px 8px;border-radius:9px;transition:background .15s}
.theme-toggle:hover{background:var(--soft)}

/* Selector on the account/settings page */
.theme-options{display:flex;gap:14px;margin:14px 0 18px;flex-wrap:wrap}
.theme-option{flex:1;min-width:130px;display:flex;flex-direction:column;align-items:center;gap:8px;
  padding:16px;border:2px solid var(--border);border-radius:12px;cursor:pointer;
  font-weight:600;background:var(--surface);transition:border-color .15s,box-shadow .15s}
.theme-option:hover{border-color:var(--primary)}
.theme-option input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.theme-option:has(input:checked){border-color:var(--primary);box-shadow:0 0 0 3px rgba(91,75,255,.18)}
.theme-option:has(input:focus-visible){outline:2px solid var(--primary);outline-offset:2px}
.theme-swatch{width:46px;height:46px;border-radius:10px;display:flex;align-items:center;
  justify-content:center;font-size:1.4rem;border:1px solid var(--border)}
.theme-swatch-light{background:#f5f6fb;color:#9a6700}
.theme-swatch-dark{background:#10141f;color:#ffce7a}