@import '../src/styles/tokens.css';

/* ══════════════════════════════════════════════
   TASARIM SİSTEMİ — Stitch tasarımı temel alınarak
   Fontlar: Manrope (başlık/gövde) + Space Grotesk (etiketler/rozetler)
   index.html <head>'e bu fontlar eklendi.
══════════════════════════════════════════════ */
:root {
  --font-heading: 'Manrope', var(--font-display), sans-serif;
  --font-ui: 'Manrope', var(--font-body), sans-serif;
  --font-label: 'Space Grotesk', var(--font-mono), sans-serif;

  /* Stitch renk paleti */
  --st-bg: var(--background);
  --st-card: var(--surface-container-low);
  --st-border: var(--outline-variant);
  --st-primary: var(--primary-container);
  --st-primary-hover: var(--primary-hover);
  --st-text: var(--on-background);
  --st-text-dim: var(--on-surface-variant);
  --st-text-dimmer: var(--outline);
  --st-badge-idle: var(--surface-container-high);
  --st-badge-idle-text: var(--on-surface-variant);
}

/* ══════════════════════════════════════════════
   ARKA PLAN — düz koyu lacivert + sağ üstte iç içe halka dekoru
══════════════════════════════════════════════ */
body { background: var(--st-bg); }

.bg-canvas {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0; overflow: hidden;
  background: var(--st-bg);
}
.bg-grid { display: none; }
.bg-glow {
  position: absolute; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.2);
  opacity: 0.1;
}
.bg-glow--1 {
  width: 384px; height: 384px; top: 80px; right: 80px; left: auto;
  background: none;
}
.bg-glow--1::after {
  content: ''; position: absolute; inset: 48px;
  border-radius: 50%; border: 1px solid rgba(255,255,255,0.2);
}
.bg-glow--2 { display: none; }

/* ══════════════════════════════════════════════
   VİEWS
══════════════════════════════════════════════ */
#viewList, #viewLesson { display: none; }
#viewList.active, #viewLesson.active { display: block; }

/* ══════════════════════════════════════════════
   LIST VIEW
══════════════════════════════════════════════ */
.page-wrap {
  position: relative; z-index: 1;
  max-width: 1180px; margin: 0 auto;
  padding: 56px 40px 100px;
}

.page-header {
  display: flex; flex-direction: column; align-items: flex-start;
  text-align: left; margin: 0 0 48px; gap: 12px;
}
.page-header-left { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.page-eyebrow { display: none; }
.page-title {
  font-family: var(--font-heading);
  font-size: clamp(38px, 6vw, 60px);
  font-weight: 800; letter-spacing: -0.03em;
  color: var(--st-text); line-height: 1.05; margin: 0;
  padding-bottom: 0;
}
.page-title::after { display: none; }
.page-subtitle {
  font-family: var(--font-ui); font-size: 17px; line-height: 1.7;
  color: var(--st-text-dim); max-width: 640px; margin: 0;
}

/* ══════════════════════════════════════════════
   İKİ SÜTUNLU YERLEŞİM — İçerik + Seviye Akordeonu
══════════════════════════════════════════════ */
.dersler-layout {
  display: flex; gap: 48px; align-items: flex-start;
}
.dersler-main { flex: 1; min-width: 0; }
.level-accordion { width: 320px; flex-shrink: 0; }
@media (max-width: 960px) {
  .dersler-layout { flex-direction: column; }
  .level-accordion { order: -1; width: 100%; position: static; top: auto; }
}

/* ══════════════════════════════════════════════
   TÜR PİLLERİ — Kültür / İletişim / Gramer / Tüm Dersler
══════════════════════════════════════════════ */
.type-pill-row {
  display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 40px;
}
.type-pill {
  padding: 14px 32px; border-radius: 14px; cursor: pointer;
  font-family: var(--font-ui); font-size: 15px; font-weight: 700;
  border: 1px solid var(--st-border); background: var(--st-card);
  color: var(--st-badge-idle-text); transition: var(--transition, all 0.2s);
  flex: 0 0 auto; text-align: center;
}
.type-pill:hover { background: rgba(255,255,255,0.05); color: var(--st-text); }
.type-pill.active {
  background: var(--st-primary); border-color: var(--st-primary); color: var(--st-text);
  box-shadow: 0 10px 24px rgba(37,99,235,0.28);
}
@media (max-width: 560px) {
  .type-pill { flex: 1 1 auto; padding: 12px 16px; font-size: 13.5px; }
}

/* ══════════════════════════════════════════════
   SEVİYE AKORDEONU (sağ sütun)
══════════════════════════════════════════════ */
.level-accordion {
  display: flex; flex-direction: column; gap: 16px;
  border: 1px solid var(--st-border); border-radius: 24px;
  background: rgba(21,28,47,0.4); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  padding: 24px;
  position: sticky; top: 24px;
}
.level-acc-item {
  border-radius: 16px; overflow: hidden;
  border: 1px solid var(--st-border); background: transparent;
  transition: var(--transition, all 0.2s);
}
.level-acc-item.open {
  border-color: var(--st-primary); background: rgba(37,99,235,0.1);
}
.level-acc-header {
  display: flex; align-items: center; gap: 16px; width: 100%;
  padding: 18px 20px; border-radius: 16px; cursor: pointer;
  border: none; background: transparent;
  font-family: var(--font-ui); font-size: 15px; font-weight: 600;
  color: var(--st-text-dim); transition: var(--transition, all 0.2s);
}
.level-acc-header:hover { background: rgba(255,255,255,0.04); }
.level-acc-item.open .level-acc-header { color: var(--st-text); }
.level-acc-badge {
  width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-label); font-size: 18px; font-weight: 700;
  background: var(--st-badge-idle); border: none; color: var(--st-badge-idle-text);
}
.level-acc-item.open .level-acc-badge {
  background: var(--st-primary); color: var(--st-text);
}
.level-acc-label { flex: 1; text-align: left; font-weight: 700; font-size: 17px; color: inherit; }
.level-acc-chevron { display: flex; transition: transform var(--transition, 0.2s); color: var(--st-text-dimmer); }
.level-acc-item.open .level-acc-chevron { transform: rotate(180deg); color: var(--accent-blue); }
.level-acc-body {
  max-height: 0; overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4,0,0.2,1);
}
.level-acc-item.open .level-acc-body { max-height: 400px; }
.level-acc-lesson {
  display: block; width: 100%; text-align: left;
  padding: 8px 20px 8px 20px; margin: 0 0 8px; border: none; background: none; cursor: pointer;
  font-family: var(--font-ui); font-size: 13.5px; font-weight: 500; color: var(--st-badge-idle-text);
  text-decoration: none; transition: var(--transition, 0.2s);
  border-left: 2px solid rgba(37,99,235,0.3);
}
.level-acc-lesson:hover { color: var(--st-text); border-left-color: var(--st-primary); }
.level-acc-empty {
  padding: 8px 20px 16px 20px; font-family: var(--font-ui); font-size: 12.5px;
  color: var(--st-text-dimmer); font-style: italic;
}
.level-acc-body > .level-acc-lesson:first-child,
.level-acc-body > .level-acc-empty:first-child { margin-top: 4px; }
.level-acc-body { padding-bottom: 8px; }

/* Arama çubuğu */
.lessons-search-row {
  display: flex; align-items: center; justify-content: flex-start; gap: 12px;
  margin-bottom: 20px; flex-wrap: wrap;
}
.lessons-search-wrap {
  position: relative; display: flex; align-items: center;
  width: 100%; max-width: 420px;
}
.lessons-search-wrap svg {
  position: absolute; left: 16px; color: var(--st-text-dimmer); pointer-events: none;
}
.lessons-search-input {
  width: 100%; padding: 12px 16px 12px 40px;
  border-radius: 14px; border: 1px solid var(--st-border);
  background: var(--st-card); color: var(--st-text);
  font-family: var(--font-ui); font-size: 13.5px;
  transition: var(--transition, 0.2s);
}
.lessons-search-input::placeholder { color: var(--st-text-dimmer); }
.lessons-search-input:hover { border-color: rgba(255,255,255,0.2); }
.lessons-search-input:focus {
  outline: none; border-color: var(--st-primary);
  background: rgba(255,255,255,0.03);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.15);
}
.lessons-search-input:focus ~ .search-kbd-hint { opacity: 0; }
.search-kbd-hint {
  position: absolute; right: 12px; pointer-events: none;
  padding: 3px 7px; border-radius: 6px;
  border: 1px solid var(--st-border); background: rgba(255,255,255,0.04);
  font-family: var(--font-label); font-size: 10.5px; color: var(--st-text-dimmer);
  transition: opacity var(--transition, 0.2s);
}
.lessons-count {
  font-family: var(--font-label); font-size: 11.5px; color: var(--st-text-dimmer);
  white-space: nowrap;
}

/* Ders grid */
.lessons-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
@media(max-width:1180px) { .lessons-grid { grid-template-columns: 1fr; } }

.lesson-card {
  background: var(--st-card); border: 1px solid var(--st-border);
  border-radius: 24px; overflow: hidden;
  cursor: pointer; transition: var(--transition, all 0.3s);
  display: flex; flex-direction: column;
  animation: fadeUp 0.4s cubic-bezier(0.4,0,0.2,1) both;
  text-decoration: none;
  position: relative;
}
.lesson-card:hover {
  border-color: rgba(37,99,235,0.5);
}
@keyframes fadeUp { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }

.lesson-card-cover-wrap { overflow: hidden; position: relative; aspect-ratio: 16 / 9; width: 100%; }
.lesson-card-cover {
  width: 100%; height: 100%; object-fit: cover;
  display: block; background: rgba(255,255,255,0.03);
  transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
}
.lesson-card:hover .lesson-card-cover { transform: scale(1.05); }
.lesson-card-cover-placeholder {
  width: 100%; height: 100%; aspect-ratio: 16 / 9;
  display: flex; align-items: center; justify-content: center;
  font-size: 30px; opacity: 0.3;
  background: linear-gradient(135deg, rgba(37,99,235,0.15), rgba(37,99,235,0.03));
}

/* Kart üstü satır: seviye rozeti + tür etiketi + (varsa) taslak rozeti */
.lesson-card-top-row { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.lesson-card-level-badge {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 4px 12px; border-radius: 6px;
  font-family: var(--font-label); font-size: 12px; font-weight: 700;
  background: var(--st-primary); color: var(--st-text);
}

.lesson-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }

.lesson-card-meta {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  font-family: var(--font-ui); font-size: 12px; color: var(--st-text-dim);
  margin-bottom: 32px;
}
.lesson-card-meta svg { flex-shrink: 0; opacity: 0.8; }
.lesson-cat-badge {
  padding: 2px 9px; border-radius: 8px; font-size: 10px; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap;
  background: var(--st-primary); color: var(--st-text);
}
.lesson-cat-badge[data-cat="A1"],
.lesson-cat-badge[data-cat="A2"],
.lesson-cat-badge[data-cat="B1"],
.lesson-cat-badge[data-cat="B2"],
.lesson-cat-badge[data-cat="C1"] { background: var(--st-primary); border: none; color: var(--st-text); }
.lesson-cat-badge[data-cat="other"],
.lesson-cat-badge:not([data-cat]) { background: var(--st-badge-idle); border: none; color: var(--st-badge-idle-text); }

.lesson-type-tag {
  font-family: var(--font-ui); font-size: 14px; font-weight: 500;
  color: var(--st-text-dim); background: none; border: none; padding: 0;
}

.lesson-card-dot { width: 2px; height: 2px; border-radius: 50%; background: var(--st-text-dimmer); }

.lesson-card-title {
  font-family: var(--font-heading); font-size: 22px; font-weight: 700;
  letter-spacing: -0.015em; color: var(--st-text); line-height: 1.3;
  margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.lesson-card-type-sub { display: none; }

/* ── Özet: tam metin, kırpma yok ──────────────────────── */
.lesson-card-excerpt {
  font-size: 13px; line-height: 1.65; color: var(--st-text-dim);
  margin-bottom: 20px;
}

.lesson-card-footer {
  display: flex; flex-direction: column; gap: 12px;
  margin-top: auto;
}
.lesson-card-read {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 16px; border-radius: 12px;
  font-family: var(--font-ui); font-size: 14px; font-weight: 700;
  color: var(--st-text); background: var(--st-primary);
  transition: var(--transition, all 0.2s);
}
.lesson-card:hover .lesson-card-read { background: var(--st-primary-hover); }
.lesson-card:hover .lesson-card-read svg { transform: translateX(4px); }
.lesson-card-read svg { transition: transform 0.2s; }
.lesson-card-admin { display: flex; gap: 5px; align-self: flex-end; }

.btn-icon-sm {
  width: 28px; height: 28px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--st-border); background: transparent; cursor: pointer;
  color: var(--st-text-dimmer); transition: var(--transition, 0.2s);
}
.btn-icon-sm:hover { border-color: rgba(255,255,255,0.25); color: var(--st-text); }
.btn-icon-sm.danger:hover { border-color: rgba(240,112,104,0.4); color: var(--danger); }

/* Empty / Loading */
.grid-empty {
  grid-column: 1/-1; text-align: center; padding: 80px 20px; color: var(--st-text-dimmer);
}
.grid-empty-icon { font-size: 40px; margin-bottom: 14px; opacity: 0.4; }
.grid-empty-text { font-size: 14px; }
.grid-empty-link {
  display: inline-flex; margin-top: 14px; padding: 9px 20px; border-radius: 999px;
  border: 1px solid rgba(37,99,235,0.4); background: rgba(37,99,235,0.12);
  color: var(--accent-blue); font-family: var(--font-ui); font-size: 12.5px; font-weight: 600;
  cursor: pointer; transition: var(--transition, 0.2s);
}
.grid-empty-link:hover { background: rgba(37,99,235,0.2); }
.grid-loading { grid-column: 1/-1; display: flex; justify-content: center; padding: 60px; }

/* Skeleton yükleme kartları */
.skeleton-card {
  border-radius: 24px; overflow: hidden;
  border: 1px solid var(--st-border); background: var(--st-card);
  display: flex; flex-direction: column;
}
.skeleton-cover { aspect-ratio: 16/9; background: var(--sk-grad); }
.skeleton-line {
  height: 12px; border-radius: 6px; background: var(--sk-grad); margin: 0 24px;
}
.skeleton-body { padding: 24px 0; display: flex; flex-direction: column; gap: 12px; }
.skeleton-line--title { height: 20px; width: 70%; margin-left: 24px; margin-right: 24px; }
.skeleton-line--meta { width: 40%; height: 9px; margin-left: 24px; }
.skeleton-line--excerpt1 { width: 90%; margin-left: 24px; margin-right: 24px; }
.skeleton-line--excerpt2 { width: 60%; margin-left: 24px; margin-right: 24px; }
:root { --sk-grad: linear-gradient(90deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.04) 100%); }
.skeleton-cover, .skeleton-line {
  background-size: 200% 100%;
  animation: skeletonShimmer 1.4s ease-in-out infinite;
}
@keyframes skeletonShimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* Yapım aşaması / coming soon */
.coming-soon {
  grid-column: 1/-1; text-align: center;
  padding: 64px 24px 56px; border-radius: 24px;
  border: 1px solid var(--st-border);
  background: var(--st-card);
  animation: fadeUp 0.5s cubic-bezier(0.4,0,0.2,1) both;
}
.coming-soon-icon {
  width: 64px; height: 64px; margin: 0 auto 22px;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  background: rgba(37,99,235,0.15);
  border: 1px solid rgba(37,99,235,0.3);
}
.coming-soon-eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-label); font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-blue);
  margin-bottom: 10px;
}
.eyebrow-dot {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--accent-blue); box-shadow: 0 0 6px var(--accent-blue);
  animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.3} }
.coming-soon-title {
  font-family: var(--font-heading); font-size: clamp(20px, 3vw, 28px);
  font-weight: 800; letter-spacing: -0.02em; color: var(--st-text);
  margin: 0 0 12px;
}
.coming-soon-desc {
  font-family: var(--font-ui); font-size: 14px; line-height: 1.7;
  color: var(--st-text-dim); max-width: 460px; margin: 0 auto 30px;
}
.coming-soon-roadmap {
  display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap;
}
.roadmap-chip {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 12px 18px; border-radius: 12px; white-space: nowrap;
  border: 1px solid var(--st-border);
  background: rgba(255,255,255,0.02);
  min-width: 64px;
}
.roadmap-chip-level {
  font-family: var(--font-label); font-size: 14px; font-weight: 700;
  color: var(--st-text);
}
.roadmap-chip-status {
  font-family: var(--font-label); font-size: 9px; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--st-text-dimmer);
}
@media(max-width:480px) {
  .coming-soon { padding: 48px 18px 44px; }
  .roadmap-chip { min-width: 52px; padding: 8px 10px; }
}
.spinner {
  width: 32px; height: 32px; border-radius: 50%;
  border: 2px solid var(--st-border); border-top-color: var(--st-primary);
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.draft-badge {
  padding: 2px 7px; border-radius: 8px; font-size: 10px; font-weight: 600; white-space: nowrap;
  background: rgba(255,210,80,0.1); border: 1px solid rgba(255,210,80,0.25); color: var(--warning);
  font-family: var(--font-label);
}

/* ══════════════════════════════════════════════
   DERS OKUMA VIEW
══════════════════════════════════════════════ */
.reading-progress-bar {
  position: fixed; top: 0; left: 0; height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--st-primary), var(--accent-blue));
  z-index: 1500; transition: width 0.1s linear;
  box-shadow: 0 0 8px rgba(37,99,235,0.5);
}

.lesson-wrap {
  position: relative; z-index: 1;
  max-width: 740px; margin: 0 auto;
  padding: 48px 24px 100px;
}

.lesson-breadcrumb {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  margin-bottom: 22px;
  font-family: var(--font-ui); font-size: 12px; color: var(--st-text-dimmer);
}
.lesson-breadcrumb a {
  color: var(--st-text-dimmer); text-decoration: none; transition: color var(--transition, 0.2s);
}
.lesson-breadcrumb a:hover { color: var(--accent-blue); }
.lesson-breadcrumb span { color: rgba(255,255,255,0.2); }
.lesson-breadcrumb-current {
  color: var(--st-text-dim);
  max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.lesson-nav-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; gap: 12px; flex-wrap: wrap;
}
.lesson-back {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; color: var(--st-text-dimmer); cursor: pointer;
  background: none; border: none; padding: 0; transition: color var(--transition, 0.2s);
  font-family: var(--font-ui);
}
.lesson-back:hover { color: var(--st-text); }
.lesson-admin-actions { display: flex; gap: 8px; }
.lesson-admin-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 10px; cursor: pointer;
  font-family: var(--font-ui); font-size: 13px; font-weight: 600;
  border: 1px solid var(--st-border); background: var(--st-card);
  color: var(--st-text-dim); transition: var(--transition, 0.2s);
}
.lesson-admin-btn:hover { border-color: rgba(255,255,255,0.25); color: var(--st-text); }
.lesson-admin-btn--danger { color: rgba(240,112,104,0.75); border-color: rgba(240,112,104,0.2); background: rgba(240,112,104,0.05); }
.lesson-admin-btn--danger:hover { color: var(--danger); border-color: rgba(240,112,104,0.4); background: rgba(240,112,104,0.1); }

.lesson-hero-img {
  width: 100%; max-height: 420px; object-fit: cover;
  border-radius: 20px; margin-bottom: 40px; border: 1px solid var(--st-border);
}

.lesson-meta-row {
  display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap;
  margin-bottom: 18px; font-family: var(--font-label); font-size: 11px; color: var(--st-text-dimmer);
  text-align: center;
}
.lesson-share-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 13px; border-radius: 999px; cursor: pointer;
  font-family: var(--font-ui); font-size: 11.5px; font-weight: 600; white-space: nowrap;
  border: 1px solid var(--st-border); background: var(--st-card);
  color: var(--st-text-dim); transition: var(--transition, 0.2s);
}
.lesson-share-btn:hover { border-color: rgba(37,99,235,0.4); color: var(--accent-blue); background: rgba(37,99,235,0.08); }

.lesson-heading {
  font-family: var(--font-heading); font-size: clamp(30px, 4.6vw, 48px);
  font-weight: 800; letter-spacing: -0.03em; line-height: 1.12;
  color: var(--st-text); margin: 0 0 36px;
  text-align: center; max-width: 640px; margin-left: auto; margin-right: auto;
}

.lesson-body {
  font-size: 17px; line-height: 1.9;
  color: rgba(255,255,255,0.8);
  font-family: var(--font-ui);
}
.lesson-body h2 { font-family: var(--font-heading); font-size: 22px; font-weight: 800; color: var(--st-text); margin: 36px 0 14px; letter-spacing: -0.02em; }
.lesson-body h3 { font-family: var(--font-heading); font-size: 18px; font-weight: 700; color: var(--st-text); margin: 28px 0 10px; }
.lesson-body p { margin-bottom: 20px; }
.lesson-body strong { color: var(--st-text); font-weight: 700; }
.lesson-body em { font-style: italic; color: rgba(255,255,255,0.7); }
.lesson-body a { color: var(--accent-blue); text-decoration: underline; text-underline-offset: 3px; }
.lesson-body ul, .lesson-body ol { margin: 0 0 20px 24px; }
.lesson-body li { margin-bottom: 8px; line-height: 1.75; }
.lesson-body blockquote {
  border-left: 3px solid var(--st-primary); padding: 12px 20px; margin: 24px 0;
  background: rgba(37,99,235,0.06); border-radius: 0 12px 12px 0;
  color: rgba(255,255,255,0.65); font-style: italic;
}
.lesson-body code { font-family: var(--font-label); background: rgba(255,255,255,0.07); padding: 2px 7px; border-radius: 4px; font-size: 14px; color: var(--accent-blue); }
.lesson-body hr { border: none; border-top: 1px solid var(--st-border); margin: 32px 0; }
.lesson-body table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.lesson-body th, .lesson-body td { border: 1px solid var(--st-border); padding: 10px 14px; font-size: 15px; text-align: left; }
.lesson-body th { background: rgba(255,255,255,0.04); color: var(--st-text); font-weight: 700; font-family: var(--font-heading); }
.lesson-body td { color: rgba(255,255,255,0.75); }
.lesson-body img { max-width: 100%; border-radius: 12px; margin: 12px 0; border: 1px solid var(--st-border); }

/* ══════════════════════════════════════════════
   ÖNCEKİ / SONRAKİ DERS
══════════════════════════════════════════════ */
.lesson-prevnext-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--st-border);
}
.lesson-nav-card {
  display: flex; flex-direction: column; gap: 6px;
  padding: 20px 22px; border-radius: 18px;
  border: 1px solid var(--st-border); background: var(--st-card);
  text-decoration: none; transition: var(--transition, 0.2s);
}
.lesson-nav-card:hover { border-color: rgba(37,99,235,0.4); background: rgba(37,99,235,0.06); transform: translateY(-2px); }
.lesson-nav-card--next { text-align: right; align-items: flex-end; }
.lesson-nav-card-label {
  font-family: var(--font-label); font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.05em; text-transform: uppercase; color: var(--accent-blue);
}
.lesson-nav-card-title {
  font-family: var(--font-heading); font-size: 14.5px; font-weight: 700;
  color: var(--st-text); line-height: 1.35;
}
@media(max-width:560px) { .lesson-prevnext-row { grid-template-columns: 1fr; } }

/* ══════════════════════════════════════════════
   İLGİLİ DERSLER
══════════════════════════════════════════════ */
.lesson-related { margin-top: 44px; }
.lesson-related-title {
  font-family: var(--font-heading); font-size: 15px; font-weight: 800;
  letter-spacing: -0.01em; color: var(--st-text); margin-bottom: 16px;
}
.lesson-related-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
@media(max-width:640px) { .lesson-related-grid { grid-template-columns: 1fr; } }
.lesson-related-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 18px 20px; border-radius: 18px;
  border: 1px solid var(--st-border); background: var(--st-card);
  text-decoration: none; transition: var(--transition, 0.2s);
}
.lesson-related-card:hover { border-color: rgba(37,99,235,0.4); background: rgba(37,99,235,0.06); transform: translateY(-2px); }
.lesson-related-cat {
  align-self: flex-start;
  padding: 2px 9px; border-radius: 8px; font-size: 10px; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap;
  background: var(--st-primary); border: none; color: var(--st-text);
}
.lesson-related-name {
  font-family: var(--font-heading); font-size: 13.5px; font-weight: 700;
  color: var(--st-text); line-height: 1.35;
}

/* Toast */
.d-toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  padding: 10px 22px; border-radius: 30px; z-index: 9999; pointer-events: none;
  font-family: var(--font-ui); font-size: 13px; font-weight: 600;
  white-space: nowrap; box-shadow: 0 6px 24px rgba(0,0,0,0.4);
  animation: toastIn 0.25s cubic-bezier(0.34,1.56,0.64,1) both;
}
.d-toast.ok  { background: var(--success); color: var(--st-text); }
.d-toast.err { background: var(--danger); color: var(--st-text); }
@keyframes toastIn { from{opacity:0;transform:translateX(-50%) translateY(10px)} to{opacity:1;transform:translateX(-50%) translateY(0)} }

/* Confirm dialog */
.confirm-overlay {
  position: fixed; inset: 0; z-index: 8888; display: none;
  background: rgba(7,7,9,0.8); backdrop-filter: blur(6px);
  align-items: center; justify-content: center; padding: 20px;
}
.confirm-overlay.open { display: flex; }
.confirm-card {
  background: var(--st-card); border: 1px solid var(--st-border);
  border-radius: 20px; padding: 32px 28px; max-width: 360px; width: 100%;
  text-align: center; box-shadow: 0 32px 80px rgba(0,0,0,0.7);
  animation: popIn 0.22s cubic-bezier(0.34,1.56,0.64,1) both;
}
@keyframes popIn { from{opacity:0;transform:scale(0.9)} to{opacity:1;transform:scale(1)} }
.confirm-title { font-family: var(--font-heading); font-size: 18px; font-weight: 800; color: var(--st-text); margin-bottom: 10px; }
.confirm-desc  { font-size: 13px; color: var(--st-text-dim); margin-bottom: 24px; line-height: 1.6; }
.confirm-actions { display: flex; gap: 10px; }
.btn-confirm-cancel {
  flex: 1; padding: 12px; background: rgba(255,255,255,0.05);
  border: 1px solid var(--st-border); border-radius: 12px;
  color: var(--st-text-dim); font-family: var(--font-ui); font-size: 14px; cursor: pointer; transition: var(--transition, 0.2s);
}
.btn-confirm-cancel:hover { background: rgba(255,255,255,0.08); color: var(--st-text); }
.btn-confirm-delete {
  flex: 1; padding: 12px; background: rgba(240,112,104,0.12);
  border: 1px solid rgba(240,112,104,0.25); border-radius: 12px;
  color: var(--danger); font-family: var(--font-ui); font-size: 14px; font-weight: 700; cursor: pointer; transition: var(--transition, 0.2s);
}
.btn-confirm-delete:hover { background: rgba(240,112,104,0.22); }

@media(max-width:480px) {
  .page-wrap { padding: 32px 20px 80px; }
  .lesson-wrap { padding: 24px 16px 80px; }
}