:root{
  --bg-deep:#080808;
  --bg-card:#0f0f0f;
  --gold:#C9A84C;
  --gold-bright:#E4C572;
  --gold-dim:#8a7434;
  --text-primary:#F3EFE6;
  --text-muted:#9b9689;
  --border-soft:rgba(201,168,76,0.18);
  --danger:#e05c5c;
}

*{ box-sizing:border-box; margin:0; padding:0; }

body{
  background:var(--bg-deep);
  color:var(--text-primary);
  font-family:'Tajawal', 'Cairo', sans-serif;
  min-height:100vh;
}

a{ color:var(--gold-bright); text-decoration:none; }

/* ===== صفحة تسجيل الدخول ===== */
.auth-wrap{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.auth-card{
  width:100%;
  max-width:400px;
  background:linear-gradient(180deg, #121212 0%, var(--bg-card) 100%);
  border:1px solid var(--border-soft);
  border-radius:16px;
  padding:32px 28px;
}
.auth-eyebrow{
  font-family:'Cairo', sans-serif;
  font-size:11px;
  font-weight:700;
  letter-spacing:2.5px;
  color:var(--gold);
  text-transform:uppercase;
  margin-bottom:10px;
}
.auth-title{
  font-family:'Cairo', sans-serif;
  font-size:24px;
  font-weight:800;
  margin-bottom:24px;
}
label{
  display:block;
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:6px;
}
input[type="email"],
input[type="password"],
input[type="text"]{
  width:100%;
  background:rgba(255,255,255,0.03);
  border:1px solid var(--border-soft);
  border-radius:8px;
  padding:11px 14px;
  color:var(--text-primary);
  font-size:14px;
  margin-bottom:18px;
  outline:none;
}
input:focus{ border-color:var(--gold); }

.btn-primary{
  width:100%;
  padding:12px 20px;
  border:none;
  border-radius:10px;
  font-family:'Cairo', sans-serif;
  font-size:15px;
  font-weight:700;
  color:#0A0A0A;
  background:linear-gradient(135deg, var(--gold-bright), var(--gold));
  cursor:pointer;
}
.btn-primary:hover{ filter:brightness(1.08); }

.error-msg{
  background:rgba(224,92,92,0.1);
  border:1px solid rgba(224,92,92,0.3);
  color:var(--danger);
  font-size:13px;
  padding:10px 14px;
  border-radius:8px;
  margin-bottom:16px;
  display:none;
}

/* ===== لوحة التحكم ===== */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 28px;
  border-bottom:1px solid var(--border-soft);
}
.topbar-brand{
  font-family:'Cairo', sans-serif;
  font-weight:800;
  font-size:16px;
  color:var(--gold-bright);
}
.topbar-user{ font-size:13px; color:var(--text-muted); display:flex; align-items:center; gap:14px; }
.tier-badge{
  font-size:11px;
  font-weight:700;
  padding:4px 10px;
  border-radius:999px;
  border:1px solid var(--border-soft);
  color:var(--gold-bright);
  background:rgba(201,168,76,0.08);
}
.logout-btn{
  background:none; border:1px solid var(--border-soft); color:var(--text-muted);
  padding:6px 14px; border-radius:8px; font-size:12px; cursor:pointer;
}

.dashboard-wrap{ max-width:1100px; margin:0 auto; padding:30px 24px; }
.dashboard-title{
  font-family:'Cairo', sans-serif;
  font-size:22px;
  font-weight:800;
  margin-bottom:24px;
}

.course-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(260px, 1fr));
  gap:16px;
}
.course-card{
  background:#0f0f0f;
  border:1px solid var(--border-soft);
  border-radius:12px;
  padding:20px;
  position:relative;
}
.course-card.locked{ opacity:0.5; }
.course-card h3{
  font-family:'Cairo', sans-serif;
  font-size:16px;
  margin-bottom:8px;
}
.course-card p{ font-size:13px; color:var(--text-muted); margin-bottom:14px; line-height:1.6; }
.lock-tag{
  font-size:11px;
  color:var(--gold-dim);
  border:1px solid var(--border-soft);
  padding:3px 10px;
  border-radius:999px;
}
.open-btn{
  display:inline-block;
  margin-top:6px;
  font-size:13px;
  font-weight:700;
  color:#0A0A0A;
  background:linear-gradient(135deg, var(--gold-bright), var(--gold));
  padding:8px 16px;
  border-radius:8px;
  border:none;
  cursor:pointer;
}

/* ===== صفحة الكورس / الفيديو ===== */
.lesson-list{ display:flex; flex-direction:column; gap:8px; margin-top:20px; }
.lesson-item{
  background:#0f0f0f;
  border:1px solid var(--border-soft);
  border-radius:8px;
  padding:12px 16px;
  cursor:pointer;
  font-size:14px;
}
.lesson-item:hover{ border-color:var(--gold); }
.video-frame-wrap{
  position:relative;
  padding-top:56.25%; /* نسبة 16:9 */
  background:#000;
  border-radius:12px;
  overflow:hidden;
  margin-bottom:20px;
}
.video-frame-wrap iframe{
  position:absolute; top:0; right:0; width:100%; height:100%; border:none;
}
.back-link{ display:inline-block; margin-bottom:16px; font-size:13px; }