/* =========================================================================
   1 Ayda Yapay Zeka — Öğrenci Paneli (members area)
   styles.css'teki tasarım token'larını kullanır.
   ========================================================================= */

.panel-body { min-height: 100vh; }

/* ===== Giriş kapısı ===== */
.gate { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 24px; }
.gate[hidden] { display: none; }
.gate__box { width: min(440px, 100%); background: linear-gradient(180deg, rgba(27,35,51,0.7), rgba(20,26,40,0.55)); border: 1px solid var(--border-strong); border-radius: var(--r-lg); padding: clamp(28px, 5vw, 44px); box-shadow: var(--shadow-lift); backdrop-filter: blur(16px); text-align: center; }
.gate__brand { justify-content: center; margin-bottom: 22px; }
.gate__title { font-size: 1.7rem; margin-bottom: 8px; }
.gate__sub { color: var(--text-2); font-size: 0.95rem; margin-bottom: 24px; }
.gate__form { display: flex; flex-direction: column; gap: 12px; }
.gate__input { background: var(--bg-base); border: 1px solid var(--border-strong); border-radius: var(--r-sm); padding: 14px 16px; color: var(--text-1); font-size: 1rem; text-align: center; letter-spacing: 0.05em; }
.gate__input:focus { outline: none; border-color: var(--accent); }
.gate__err { color: var(--danger); font-size: 0.84rem; margin-top: 4px; }
.gate__err a { color: var(--accent-hover); }
.gate__hint { margin-top: 20px; font-size: 0.82rem; color: var(--text-3); }
.gate__hint code { background: var(--surface-2); padding: 2px 8px; border-radius: 6px; color: var(--gold); }
.gate__alt { margin-top: 12px; font-size: 0.86rem; color: var(--text-2); }
.gate__alt a { color: var(--accent-hover); }

/* ===== Panel shell ===== */
.app { min-height: 100vh; display: flex; flex-direction: column; }
.app[hidden] { display: none; }
.app__top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 18px; padding: 12px clamp(16px, 3vw, 28px); background: rgba(10,14,23,0.82); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.app__progress { flex: 1; max-width: 320px; display: flex; flex-direction: column; gap: 5px; }
.app__progress-label { font-size: 0.76rem; color: var(--text-2); font-variant-numeric: tabular-nums; }
.app__bar { height: 7px; background: var(--surface-2); border-radius: var(--r-pill); overflow: hidden; }
.app__bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--success)); border-radius: var(--r-pill); transition: width .5s var(--ease-ui); }
.app__menu { display: none; font-size: 1.3rem; color: var(--text-1); width: 40px; height: 40px; border-radius: 8px; }
.app__menu:hover { background: var(--surface-2); }
.app__logout { margin-left: auto; }

.app__main { flex: 1; display: grid; grid-template-columns: 320px 1fr; align-items: start; }

/* ===== Sidebar ===== */
.app__side { position: sticky; top: 60px; align-self: start; max-height: calc(100vh - 60px); overflow-y: auto; padding: 20px 16px 40px; border-right: 1px solid var(--border); }
.side__week { margin-bottom: 18px; }
.side__week-head { display: flex; align-items: center; gap: 8px; padding: 8px 10px; font-family: var(--font-head); font-weight: 600; font-size: 0.82rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; }
.side__day { font-size: 0.68rem; font-weight: 600; color: var(--gold); background: var(--gold-soft); padding: 2px 8px; border-radius: var(--r-pill); font-variant-numeric: tabular-nums; }
.side__lesson { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left; padding: 10px 12px; border-radius: var(--r-sm); color: var(--text-2); font-size: 0.9rem; transition: background .2s, color .2s; }
.side__lesson:hover { background: var(--surface-1); color: var(--text-1); }
.side__lesson.is-active { background: var(--accent-soft); color: var(--text-1); }
.side__check { width: 20px; height: 20px; flex-shrink: 0; border-radius: 50%; border: 1.5px solid var(--border-strong); display: grid; place-items: center; font-size: 0.7rem; color: transparent; }
.side__lesson.is-done .side__check { background: var(--success); border-color: var(--success); color: #06210f; }
.side__lesson-title { flex: 1; line-height: 1.35; }

/* ===== İçerik ===== */
.app__content { padding: clamp(20px, 4vw, 44px); max-width: 920px; }
.lesson__crumb { font-size: 0.78rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.lesson__crumb .gold { color: var(--gold); }
.lesson__title { font-size: clamp(1.5rem, 3.5vw, 2.1rem); margin-bottom: 16px; }
.video { position: relative; aspect-ratio: 16/9; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--border-strong); background: radial-gradient(120% 120% at 50% 0%, var(--surface-3), var(--bg-sunken)); display: grid; place-items: center; box-shadow: var(--shadow-lift); }
.video::after { content: ""; position: absolute; inset: 0; background: radial-gradient(60% 60% at 50% 40%, rgba(124,58,237,0.16), transparent 70%); pointer-events: none; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video__ph { text-align: center; color: var(--text-2); z-index: 1; padding: 20px; }
.video__play { width: 68px; height: 68px; margin: 0 auto 14px; border-radius: 50%; background: var(--accent); display: grid; place-items: center; box-shadow: var(--glow-accent); }
.video__play svg { margin-left: 4px; }
.video__ph strong { display: block; color: var(--text-1); font-family: var(--font-head); margin-bottom: 4px; }
.video__ph span { font-size: 0.84rem; color: var(--text-3); }

.lesson__meta { display: flex; flex-wrap: wrap; gap: 14px; margin: 18px 0; font-size: 0.84rem; color: var(--text-3); }
.lesson__meta span { display: inline-flex; align-items: center; gap: 6px; }
.lesson__desc { color: var(--text-2); font-size: 1.02rem; line-height: 1.7; }
.lesson__desc p { margin-bottom: 14px; }
.lesson__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border); align-items: center; }
.lesson__nav { display: flex; gap: 10px; margin-left: auto; }
.lesson__done-tag { color: var(--success); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }

.app__disclaimer { margin-top: 28px; font-size: 0.78rem; color: var(--text-3); border-top: 1px solid var(--border); padding-top: 16px; }

/* ===== Responsive ===== */
@media (max-width: 880px) {
  .app__main { grid-template-columns: 1fr; }
  .app__menu { display: grid; place-items: center; }
  .app__side { position: fixed; top: 0; left: 0; bottom: 0; width: 300px; max-height: 100vh; background: var(--bg-elevated); z-index: 30; transform: translateX(-100%); transition: transform .3s var(--ease-ui); padding-top: 70px; border-right: 1px solid var(--border-strong); }
  .app__side.is-open { transform: none; box-shadow: var(--shadow-lift); }
  .app__progress { max-width: none; }
}
@media (max-width: 480px) {
  .app__logout { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .app__bar i, .app__side { transition: none; }
}