/* Ders Videoları Dashboard - Ana stiller */

:root {
  --bg-deep: #0d0f14;
  --bg-card: #151922;
  --bg-elevated: #1c1f28;
  --border: #2a2e3a;
  --text: #e6e9f0;
  --text-muted: #8b92a8;
  --accent: #7c9cff;
  --accent-soft: rgba(124, 156, 255, 0.15);
  --success: #6ee7b7;
  --warning: #fcd34d;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

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

[inert] {
  pointer-events: none;
  cursor: default;
  user-select: none;
}

html {
  background-color: var(--bg-deep);
}

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  transition: grid-template-columns 0.3s ease;
}

/*
 * Katman hiyerarşisi (z-index)
 * 1) body: koyu zemin
 * 2) ::before: public/assets/arka-plan.png (≤1920px genişlik önerilir)
 * 3) .app: ana içerik üstte
 */
body.dashboard-page {
  position: relative;
  background-color: #0b1120;
  background-image: none;
}

body.dashboard-page::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('assets/arka-plan.png');
  /* Görseli yaklaşık 0,2 ölçek (genişliğin %20’si), sağda */
  background-size: 80% auto;
  background-position: right center;
  background-repeat: no-repeat;
  opacity: 0.2;
  filter: brightness(0.88) saturate(0.85);
  z-index: 0;
  pointer-events: none;
}

body.dashboard-page .app {
  position: relative;
  z-index: 1;
}

body.dashboard-page.boot-pending .app {
  visibility: hidden;
  opacity: 0;
}

/* Yönetim paneli arka planı – klasik görünüm */
body.dashboard-page #panel-yonetim:not(.admin-dashboard-layout) {
  background: #24262d;
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
}

/* Duyuru geçmişi — Firebase’de okundu işaretli satırlar */
.okunmus-bildirim {
  opacity: 0.55;
}

body.beyaz-mod .okunmus-bildirim {
  opacity: 0.65;
}

/* Sidebar */
.sidebar {
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  min-width: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Marka logosu (sol menü) */
.brand-logo-container {
  width: 100%;
  padding: 20px 15px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-sizing: border-box;
}

.brand-logo-container a {
  display: block;
  line-height: 0;
  text-decoration: none;
}

.ciks-logo {
  width: 100%;
  max-width: 220px;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0px 4px 15px rgba(0, 150, 255, 0.15));
  transition: all 0.3s ease-in-out;
}

.ciks-logo:hover {
  transform: scale(1.05);
  filter: drop-shadow(0px 6px 20px rgba(0, 150, 255, 0.4));
  cursor: pointer;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
  min-height: 0;
}

.nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.2s, background 0.2s;
  border-left: 3px solid transparent;
}

.nav a:hover {
  color: var(--text);
  background: var(--accent-soft);
}

.nav a.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
}

.nav-group {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.nav-label {
  padding: 0.75rem 1.5rem 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.nav-sub {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  padding-left: 0.5rem;
  border-left: 2px solid var(--border);
  margin-left: 1.5rem;
  margin-bottom: 0.25rem;
}

.nav-sublabel {
  padding: 0.4rem 1rem 0.2rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text);
}

.nav-sublink {
  padding: 0.5rem 1rem !important;
  font-size: 0.875rem !important;
}

.nav-icon {
  width: 20px;
  height: 20px;
  opacity: 0.8;
}

/* Main */
.main {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow: auto;
}

.header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.header-start {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  flex: 1;
}

.header-start h1 {
  margin: 0;
}

.sidebar-toggle-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.sidebar-toggle-btn:hover {
  background: var(--accent-soft);
  border-color: rgba(124, 156, 255, 0.45);
  color: var(--accent);
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.search-wrap {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.search-wrap input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: border-color 0.2s;
}

.search-wrap input::placeholder {
  color: var(--text-muted);
}

.search-wrap input:focus {
  outline: none;
  border-color: var(--accent);
}

.search-wrap svg {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
}

.content {
  max-width: 1440px;
  width: 95%;
  margin: 0 auto;
  padding: 2rem 20px;
  flex: 1;
}

/* Yeni geniş yerleşim için ortak kapsayıcı (gelecek ekranlar için). */
.container {
  max-width: 1440px;
  width: 95%;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--text);
}

/* Yönetim paneli iç kart başlıkları (akordeon dış başlıklarından ayrı; .section-title ile karışmaz) */
.admin-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text, #f8fafc);
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border, rgba(148, 163, 184, 0.2));
  padding-bottom: 0.5rem;
}

.acc-icon {
  flex-shrink: 0;
}

/* Kayıtlı hesaplar / LMS — tablo kartı */
.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-soft, 0 4px 24px rgba(0, 0, 0, 0.12));
}

@keyframes fadeIn {
  from { opacity: 0.75; }
  to { opacity: 1; }
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

/* Liste tablo modu: tek sütun, yatay taşma yok */
.video-grid.is-table-list {
  display: block;
  grid-template-columns: none;
  gap: 0;
  max-width: 100%;
  overflow-x: hidden;
}

.video-grid.is-table-list .video-card:hover {
  transform: none;
  box-shadow: none;
}

.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
}

.video-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.video-thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--border) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.video-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.2s;
}

.video-card:hover .video-thumb::after {
  opacity: 1;
}

.play-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: transform 0.2s;
}

.video-card:hover .play-btn {
  transform: scale(1.08);
}

.play-btn svg {
  width: 24px;
  height: 24px;
  margin-left: 4px;
}

.video-meta {
  padding: 1rem 1.25rem;
}

.video-meta h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  line-height: 1.35;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta .info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.video-meta .duration {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-elevated);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--text-muted);
}

.badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-weight: 500;
}

.badge-new {
  background: rgba(110, 231, 183, 0.15);
  color: var(--success);
}

.badge-popular {
  background: rgba(252, 211, 77, 0.15);
  color: var(--warning);
}

.stats-bar {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  min-width: 140px;
}

.stat .value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
}

.stat .label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* İçerik panelleri (sidebar ile geçiş) */
.content-panel {
  display: none;
}

.content-panel.active {
  display: block;
}

/* Yönetim – ders ekleme formu */
.admin-form {
  margin-bottom: 2rem;
  padding: 1.5rem 1.75rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.admin-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: flex-end;
}

.admin-form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.admin-form-field-wide {
  grid-column: 1 / -1;
}

.admin-form-field label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.admin-form-field input,
.admin-form-field select {
  background: var(--bg-deep);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  padding: 0.55rem 0.75rem;
  color: var(--text);
  font-size: 0.9rem;
}

.admin-form-field input::placeholder {
  color: var(--text-muted);
}

.admin-form-actions {
  display: flex;
  justify-content: flex-end;
}

/* Yönetim: ana aksiyon butonları — konteyner genişliğinde, max-width / ortalama yok */
#panel-yonetim .admin-form .btn-primary,
#panel-yonetim .admin-form button.btn-primary {
  width: 100%;
  max-width: none;
  margin-left: 0;
  margin-right: 0;
  box-sizing: border-box;
  display: block;
}

#panel-yonetim #btnRefreshQuestions {
  margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
  .admin-form {
    padding: 1.25rem 1rem;
  }
  .admin-form-grid {
    grid-template-columns: 1fr;
  }
  .admin-form-actions {
    justify-content: stretch;
  }
  .admin-form-actions .btn {
    width: 100%;
  }
}

/* Dashboard arka plan görseli (girişten sonra) – ek ayar gerekirse burada yapılır */

/* Yükleme durumu */
.video-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.video-loading.hidden {
  display: none;
}

.video-grid-wrap {
  position: relative;
  min-height: 120px;
}

/* Video + yan panel düzeni kullanan ekranlar için nefesli grid. */
.video-layout-wrapper {
  display: grid;
  grid-template-columns: 72% 28%;
  gap: 25px;
  align-items: start;
  max-width: 1440px;
  margin: 0 auto;
  width: 96%;
}

@media (max-width: 1024px) {
  .video-layout-wrapper {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Kategoriler listesi */
.category-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.category-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  text-align: center;
  font-weight: 500;
  color: var(--text);
  transition: border-color 0.2s;
}

.category-item:hover {
  border-color: var(--accent);
}

.category-item span {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.dersler-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

.dersler-card {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-weight: 600;
  font-size: 1.125rem;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.dersler-card:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

.empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 2rem;
  font-size: 0.9375rem;
}

/* İlerleme özeti */
.progress-summary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.progress-bar-wrap {
  margin-bottom: 1.5rem;
}

.progress-bar-wrap:last-child {
  margin-bottom: 0;
}

.progress-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.progress-bar-track {
  height: 8px;
  background: var(--bg-elevated);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.3s ease;
}

/* Ayarlar */
.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 25px;
  max-width: 480px;
}

/* Ortak kart ferahlığı: mevcut ve yeni kart sınıfları için. */
.card,
.video-info-box,
.question-card,
.progress-summary,
.admin-form {
  padding: 25px;
  border-radius: 12px;
  background: #1a1a2e;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.settings-desc {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
}

.btn-logout {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9375rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn-logout:hover {
  background: var(--accent-soft);
}

/* Video modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: min(1440px, 96vw);
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 1.5rem;
}

.main-video-area,
.side-question-panel {
  min-width: 0;
}

.side-question-panel #modalTestArea {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 1rem;
}

/* Tam ekran odak modu (Soru Bankası / test) — premium mizanpaj v14.6.7 */
.modal-overlay.is-open:has(#question-solving-root) .modal {
  background: transparent;
  border: none;
  box-shadow: none;
  max-width: none;
  width: 100%;
  max-height: none;
  padding: 0;
  overflow: visible;
}

.modal-overlay.is-open:has(#question-solving-root) .modal-close {
  position: fixed;
  top: max(12px, env(safe-area-inset-top, 0px));
  right: max(12px, env(safe-area-inset-right, 0px));
  z-index: 10070;
  background: rgba(15, 23, 42, 0.85);
  color: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.modal-overlay.is-open:has(#question-solving-root) .side-question-panel #modalTestArea {
  background: transparent;
  border: none;
  padding: 0;
}

.modal-overlay.is-open:has(#question-solving-root) .modal-title-row,
.modal-overlay.is-open:has(#question-solving-root) .modal-meta {
  display: none !important;
}

.modal-overlay.is-open:has(#question-solving-root) .video-layout-wrapper {
  display: block;
  width: 100%;
  margin: 0;
}

.modal-overlay.is-open:has(#question-solving-root) .side-question-panel {
  width: 100%;
  max-width: none;
}

.question-solving-container {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  width: min(62vw, 860px);
  min-height: min(60vh, 640px);
  height: auto;
  max-height: 68vh;
  overflow-y: auto;
  box-sizing: border-box;
  background: #ffffff;
  position: relative;
  top: auto;
  left: auto;
  z-index: 10002;
  border-radius: 14px;
  padding: 20px 18px 72px;
  margin: 0 auto;
}

/* Normal mod: görsel kart içinde üstte ve yatay ortada; geniş görseller taşmasın */
#question-solving-root:not(.sinema-aktif):not(.kucuk-ekran-aktif) {
  overflow-x: hidden;
}

#question-solving-root:not(.sinema-aktif):not(.kucuk-ekran-aktif) .question-solving-inner {
  justify-content: flex-start;
}

#question-solving-root:not(.sinema-aktif):not(.kucuk-ekran-aktif) .question-content-area {
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

#question-solving-root:not(.sinema-aktif):not(.kucuk-ekran-aktif) .question-canvas-wrap {
  align-items: flex-start;
  justify-content: center;
  min-width: 0;
  max-width: 100%;
  min-height: min(40vh, 400px);
}

#question-solving-root:not(.sinema-aktif):not(.kucuk-ekran-aktif) .question-zoom-layer {
  align-items: flex-start;
  justify-content: center;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

#question-solving-root:not(.sinema-aktif):not(.kucuk-ekran-aktif) .question-solving-media {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  width: auto;
  height: auto;
  max-height: min(46vh, 440px);
  object-fit: contain;
  object-position: center top;
}

.question-solving-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  flex: 1 0 auto;
}

.question-solving-lead {
  font-size: clamp(1rem, 2.8vw, 1.8rem);
  font-weight: 600;
  color: #0f172a;
  text-align: center;
  margin: 0 0 20px;
  max-width: 900px;
  line-height: 1.45;
}

.question-content-area {
  width: 90%;
  max-width: 1200px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.question-content-area svg {
  width: 100%;
  height: auto;
  max-height: 50vh;
  display: block;
  margin: 0 auto;
}

.question-canvas-wrap {
  position: relative;
  width: 100%;
  max-width: 1200px;
  user-select: none;
  touch-action: none;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f8fafc;
  min-height: min(46vh, 460px);
}

.question-zoom-layer {
  position: relative;
  width: 100%;
  transform-origin: 0 0;
  touch-action: none;
  min-height: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
}

.question-canvas-wrap--text {
  min-height: min(42vh, 420px);
  background: #ffffff;
}

.question-solving-media {
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 50vh;
  display: block;
  margin: 0 auto;
  vertical-align: middle;
  background: #f8fafc;
  object-fit: contain;
  object-position: center;
  aspect-ratio: auto;
}

.question-solving-media-error {
  color: #dc2626;
  padding: 24px;
  text-align: center;
}

.question-text-block {
  padding: clamp(16px, 3vw, 28px);
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  color: #1e293b;
  line-height: 1.65;
}

.question-solving-draw-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  z-index: 10;
  touch-action: none;
}

.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  width: 90%;
  max-width: 1200px;
  margin-top: 28px;
}

.options-grid-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  padding: 14px 16px;
  border-radius: 10px;
  background: #f8fafc;
  border: 2px solid #e2e8f0;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.options-grid-item:hover {
  border-color: #93c5fd;
  background: #eff6ff;
}

.options-grid-item.is-selected {
  border-color: #2563eb;
  background: #eff6ff;
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.2);
}

.options-grid-item input {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 3px;
  flex-shrink: 0;
  accent-color: #2563eb;
}

.options-grid-item-text {
  color: #1e293b;
  font-size: 0.98rem;
  line-height: 1.4;
}

.question-nav-row {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 90%;
  max-width: 1200px;
  margin-top: 28px;
  gap: 12px;
  flex-wrap: wrap;
}

.question-nav-btn {
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
}

.question-nav-hint {
  font-size: 0.9rem;
  color: #64748b;
  text-align: center;
}

.question-nav-btn--ghost {
  background: #f1f5f9;
  color: #334155;
  border: 2px solid #e2e8f0;
}

.question-nav-btn--ghost:hover {
  background: #e2e8f0;
}

.question-nav-btn--next {
  background: #2563eb;
  color: #fff;
}

.question-nav-btn--next:hover {
  background: #1d4ed8;
}

.question-nav-btn--finish {
  background: #059669;
  color: #fff;
}

.question-nav-btn--finish:hover {
  background: #047857;
}

.question-nav-float {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.3);
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.2);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10020;
  padding: 0;
  opacity: 0.88;
  transition: background 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

.question-nav-float:hover {
  background: rgba(37, 99, 235, 0.8);
  opacity: 1;
  transform: translateY(-50%) scale(1.1);
}

.question-nav-float.nav-prev {
  left: 10px;
}

.question-nav-float.nav-next {
  right: 10px;
}

.question-nav-float.is-nav-hint-visible {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.28);
}

.zoom-hidden {
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 640px) {
  .options-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .question-solving-container {
    padding: max(10px, env(safe-area-inset-top, 0px)) 10px 92px;
  }

  .question-content-area,
  .options-grid,
  .question-nav-row {
    width: 100%;
  }

  .question-solving-media {
    max-height: 40vh;
  }

  .options-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .question-nav-float {
    display: none;
  }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.modal-close:hover {
  background: var(--border);
}

.modal-title {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  padding-right: 2.5rem;
  color: var(--text);
}

/* V9.4.1 — Video modal başlık satırı + favori (Kalp Atışı) */
.modal-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-right: 2.5rem;
}

.modal-title-with-fav {
  flex: 1;
  min-width: 0;
  margin-bottom: 0;
  padding-right: 0;
}

.btn-toggle-favorite {
  display: none;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(248, 113, 113, 0.5);
  background: rgba(15, 23, 42, 0.65);
  color: var(--text);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.btn-toggle-favorite:hover {
  transform: translateY(-1px);
  border-color: rgba(248, 113, 113, 0.85);
}

.btn-toggle-favorite--active {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
}

.modal-player {
  margin-bottom: 1rem;
  max-width: 100%;
  position: relative;
}

/* Video konteyneri: 16:9 oranını korur, responsive */
.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 görüntü oranı */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  background: #000;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.modal-player .video-container {
  display: block;
}

.video-container iframe,
.video-container video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-container video {
  object-fit: contain;
}

.player-placeholder {
  aspect-ratio: 16 / 9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9375rem;
  gap: 0.5rem;
}

.player-placeholder .player-icon {
  font-size: 2.5rem;
  color: var(--accent);
}

.video-file-label {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: var(--bg-deep);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: filter 0.2s;
}

.video-file-label:hover {
  filter: brightness(1.1);
}

.video-file-label input[type="file"] {
  display: none;
}

.modal-meta {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn-favorite {
  padding: 0.65rem 1.25rem;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn-favorite:hover {
  background: var(--accent);
  color: var(--bg-deep);
}

.btn-favorite.in-favorites {
  background: var(--warning);
  color: var(--bg-deep);
  border-color: var(--warning);
}

.btn-complete {
  padding: 0.65rem 1.25rem;
  background: var(--success);
  color: var(--bg-deep);
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: filter 0.2s;
}

.btn-complete:hover {
  filter: brightness(1.1);
}

.btn-complete.done {
  background: var(--bg-elevated);
  color: var(--text-muted);
  cursor: default;
}

@media (max-width: 768px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
    flex-direction: row;
    flex-wrap: wrap;
    padding: 1rem;
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .nav a {
    border-left: none;
    border-bottom: 3px solid transparent;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }

  .nav a.active {
    border-left: none;
    border-bottom-color: var(--accent);
  }

  .header {
    padding: 1rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .header h1 {
    font-size: 1.25rem;
  }

  .search-wrap {
    max-width: 100%;
    width: 100%;
  }

  .content {
    padding: 1.25rem;
  }

  .stats-bar {
    gap: 1rem;
    margin-bottom: 1.5rem;
  }

  .stat {
    flex: 1;
    min-width: auto;
    padding: 0.875rem 1rem;
  }

  .stat .value {
    font-size: 1.25rem;
  }

  .stat .label {
    font-size: 0.75rem;
  }

  .section-title {
    font-size: 1rem;
    margin-bottom: 1rem;
  }

  #panel-yonetim .admin-card-title {
    font-size: 1.05rem; /* Mobilde sırıtmasın, zarif dursun */
    margin-bottom: 0.75rem;
  }

  .video-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .video-meta {
    padding: 0.875rem 1rem;
  }

  .video-meta h3 {
    font-size: 0.9375rem;
  }
}

@media (max-width: 480px) {
  .sidebar {
    padding: 0.75rem;
  }

  .brand-logo-container {
    padding: 14px 10px;
  }

  .ciks-logo {
    max-width: 190px;
  }

  .nav a {
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
  }

  .header {
    padding: 0.875rem 1rem;
  }

  .header h1 {
    font-size: 1.125rem;
  }

  .content {
    padding: 1rem;
  }

  .stats-bar {
    flex-direction: column;
    gap: 0.75rem;
  }

  .stat {
    width: 100%;
  }

  .video-grid {
    gap: 0.875rem;
  }
}

/* Giriş sayfası */
.login-page {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
}

/* Kartın dışında kalan alan: matematik, fizik, kimya, biyoloji - saydamlık azaltıldı, mat beyaz ton */
.login-page-bg {
  position: fixed;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1635070041078-e363dbe005cb?w=1920');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  z-index: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-page-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.07);
  z-index: 0;
  pointer-events: none;
}

/* Arka planda marka yazısı - VAR-BİLİM EĞİTİM tam görünsün */
.login-page-brand {
  position: relative;
  z-index: 1;
  font-size: clamp(1.25rem, 3.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgba(230, 233, 240, 0.85);
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

@media (max-width: 520px) {
  .login-page-brand {
    white-space: normal;
    text-align: center;
    max-width: 90vw;
    line-height: 1.35;
  }
}

.login-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
}

.login-card {
  position: relative;
  border: 1px solid rgba(120, 125, 140, 0.5);
  border-radius: var(--radius);
  box-shadow: var(--shadow), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  overflow: hidden;
  background: linear-gradient(145deg, #3d4048 0%, #2f3238 50%, #282b30 100%);
}

/* Form alanının arkasında eğitim resmi - saydamlık azaltıldı, mat ton */
.login-card-bg {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1523240795612-9a054b0db644?w=800');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}

.login-card-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.05);
  pointer-events: none;
}

.login-card-inner {
  position: relative;
  z-index: 1;
  background: linear-gradient(160deg, rgba(55, 58, 65, 0.95) 0%, rgba(42, 45, 52, 0.98) 100%);
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06) inset;
}

/* Kart içinde tam görünen VAR-BİLİM EĞİTİM başlığı */
.login-brand-title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #2dd4bf;
  text-align: center;
  margin: 0 0 0.5rem 0;
  line-height: 1.3;
  word-wrap: break-word;
}

.login-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.login-subtitle {
  color: var(--text-muted);
  font-size: 0.9375rem;
  text-align: center;
  margin-bottom: 2rem;
}

.login-error {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  font-size: 0.875rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.login-lockout {
  background: rgba(252, 211, 77, 0.15);
  color: #fde047;
  font-size: 0.875rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  border: 1px solid rgba(252, 211, 77, 0.4);
}

.login-lockout-title {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.login-lockout-desc {
  margin: 0;
  font-size: 0.8125rem;
  opacity: 0.95;
}

.login-processing {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Bilgi girilip Kayıt Ol tıklanana kadar kesinlikle gizli */
.login-processing[hidden],
#registerProcessing[hidden] {
  display: none !important;
}

.login-processing .loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.login-success {
  background: rgba(110, 231, 183, 0.15);
  color: var(--success);
  font-size: 0.875rem;
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  border: 1px solid rgba(110, 231, 183, 0.3);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.success-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.success-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--success);
}

.success-content p {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--success);
  opacity: 0.9;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.login-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

.login-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.login-input::placeholder {
  color: var(--text-muted);
}

.login-input:focus {
  outline: none;
  border-color: var(--accent);
}

.password-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrap .login-input {
  padding-right: 3rem;
}

.password-toggle {
  position: absolute;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s;
  z-index: 1;
}

.password-toggle:hover {
  color: var(--text);
}

.password-toggle svg {
  width: 20px;
  height: 20px;
}

.login-checkbox-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
}

.login-checkbox {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.login-checkbox-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  cursor: pointer;
}

.login-checkbox-wrap:hover .login-checkbox-label {
  color: var(--text);
}

.login-form .btn {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  text-align: center;
  text-decoration: none;
  border: none;
  display: block;
}

/* Genel birincil buton stili (lacivert) */
.btn-primary {
  background: #123063;
  color: #ffffff;
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover {
  background: #1b3f80;
  transform: translateY(-1px);
}

.btn-primary:active {
  background: #0d2446;
  transform: translateY(0);
}

.login-form .btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.login-form .btn-secondary:hover {
  background: var(--accent-soft);
}

.login-footer {
  margin-top: 1.5rem;
  text-align: right;
  position: relative;
  z-index: 1;
}

.login-footer-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 0.2s;
}

.login-footer-link:hover {
  color: var(--accent);
}

/* Login sayfası - Mobil ve Tablet uyumluluk */
@media (max-width: 768px) {
  .login-page {
    padding: 1rem;
    align-items: flex-start;
    padding-top: 2rem;
  }

  .login-wrap {
    max-width: 100%;
    width: 100%;
  }

  .login-card-inner {
    padding: 1.75rem;
  }

  .login-logo {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
  }

  .login-subtitle {
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
  }

  .login-form {
    gap: 1rem;
  }

  .login-form .btn {
    padding: 0.875rem 1.25rem;
    font-size: 0.9375rem;
  }

  .login-footer {
    margin-top: 1rem;
    text-align: center;
  }

  .login-page-brand {
    font-size: clamp(1rem, 3vw, 1.5rem);
    letter-spacing: 0.1em;
  }
}

@media (max-width: 480px) {
  .login-page {
    padding: 0.75rem;
    padding-top: 1.5rem;
  }

  .login-card-inner {
    padding: 1.5rem;
  }

  .login-logo {
    font-size: 1.125rem;
  }

  .login-subtitle {
    font-size: 0.8125rem;
    margin-bottom: 1.25rem;
  }

  .login-label {
    font-size: 0.8125rem;
  }

  .login-input {
    font-size: 0.9375rem;
    padding: 0.625rem 0.875rem;
  }

  .password-input-wrap .login-input {
    padding-right: 2.5rem;
  }

  .password-toggle {
    right: 0.5rem;
    padding: 0.2rem;
  }

  .password-toggle svg {
    width: 18px;
    height: 18px;
  }

  .login-checkbox-label {
    font-size: 0.8125rem;
  }

  .login-form .btn {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
  }

  .login-error {
    font-size: 0.8125rem;
    padding: 0.625rem 0.875rem;
  }

  .login-footer-link {
    font-size: 0.8125rem;
  }

  .login-page-brand {
    display: none; /* Çok küçük ekranlarda arka plan yazısını gizle */
  }
}

/* Tablet için özel ayarlar */
@media (min-width: 481px) and (max-width: 1024px) {
  .login-wrap {
    max-width: 450px;
  }

  .login-card-inner {
    padding: 2rem;
  }
}

/* PWA güncelleme banner’ı (toast ile aynı köşe / görsel dil) */
.varbilim-update-banner {
  pointer-events: auto;
  white-space: normal;
}

.varbilim-update-banner-inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: stretch;
}

.varbilim-update-banner-text {
  font-weight: 600;
  line-height: 1.35;
}

.varbilim-update-btn {
  white-space: nowrap;
  flex-shrink: 0;
}

@media (min-width: 400px) {
  .varbilim-update-banner-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }
}

/* Var-Asistan: veliye WhatsApp ile paylaşım */
.whatsapp-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: #25d366;
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 20px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 10px;
  font-size: 14px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.whatsapp-btn:hover {
  background-color: #128c7e;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.whatsapp-icon {
  font-size: 18px;
}

/* reCAPTCHA v3: rozet gizli — Google şartı gereği yasal metin login-footer’da (.login-recaptcha-legal) */
body.login-page .grecaptcha-badge {
  visibility: hidden !important;
}

.login-recaptcha-legal {
  margin: 0.75rem 0 0;
  max-width: 22rem;
  font-size: 0.65rem;
  line-height: 1.4;
  color: var(--text-muted, #64748b);
  text-align: center;
}

.login-recaptcha-legal a {
  color: #94a3b8;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.login-recaptcha-legal a:hover {
  color: #cbd5e1;
}

/* Misafir (sandbox) */
.login-guest-divider {
  margin: 1.25rem 0 0.75rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted, #94a3b8);
}

.login-guest-note {
  margin: 0.5rem 0 0;
  font-size: 0.75rem;
  line-height: 1.35;
  color: var(--text-muted, #64748b);
  text-align: center;
}

/* reCAPTCHA / insanlık testi hazırlığı (kota dolduğunda login.html’de gösterilir) */
.login-guest-human-check {
  margin-top: 1rem;
  padding: 1rem 1rem 0.85rem;
  border-radius: 12px;
  border: 1px dashed rgba(148, 163, 184, 0.45);
  background: rgba(30, 41, 59, 0.35);
}

.login-guest-human-check-title {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fbbf24;
  text-align: center;
}

.login-guest-human-check-desc {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--text-muted, #94a3b8);
  text-align: center;
}

.login-guest-recaptcha-mount {
  min-height: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-guest-recaptcha-mount:not(:empty) {
  min-height: 78px;
}

.btn-guest {
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.65rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(30, 41, 59, 0.35);
  color: #e2e8f0;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.btn-guest:hover {
  background: rgba(51, 65, 85, 0.55);
  border-color: rgba(148, 163, 184, 0.65);
}

.guest-register-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 10px;
  padding: 10px 16px;
  border-radius: 12px;
  background: linear-gradient(145deg, #1e40af, #3b82f6);
  color: #f8fafc !important;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: 1px solid rgba(226, 232, 240, 0.35);
  box-shadow: 0 4px 12px rgba(30, 64, 175, 0.35);
}

.guest-register-cta:hover {
  filter: brightness(1.06);
}

.guest-video-upsell-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(6px);
}

.guest-video-upsell-card {
  max-width: 420px;
  width: 100%;
  padding: 1.5rem;
  border-radius: 16px;
  background: linear-gradient(165deg, rgba(30, 41, 59, 0.98), rgba(15, 23, 42, 0.99));
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

.guest-video-upsell-text {
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
  line-height: 1.45;
  color: #f1f5f9;
  font-weight: 600;
  text-align: center;
}

.guest-video-upsell-actions {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.guest-video-upsell-actions .btn {
  width: 100%;
  justify-content: center;
}

/* V9.3 — Video düzey sekmeleri (Kütüphaneci) */
.video-level-tabs-wrap {
  margin-bottom: 1rem;
  width: 100%;
}

.video-level-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 0.65rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.video-level-item {
  margin: 0;
}

.video-level-tab {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(30, 41, 59, 0.45);
  color: #e2e8f0;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.video-level-tab:hover {
  border-color: rgba(139, 92, 246, 0.55);
  background: rgba(51, 65, 85, 0.65);
}

.video-level-tab.active {
  border-color: rgba(139, 92, 246, 0.85);
  background: rgba(139, 92, 246, 0.28);
  color: #f8fafc;
  box-shadow: 0 2px 8px rgba(139, 92, 246, 0.2);
}

/* V9.3.1 — Oda içi akıllı arama (video-search-input) */
.video-room-search-wrap {
  display: flex;
  justify-content: center;
  width: 100%;
  margin-bottom: 1.1rem;
  padding: 0 0.5rem;
  box-sizing: border-box;
}

.video-room-search-inner {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 28rem;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: rgba(15, 23, 42, 0.65);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.video-room-search-icon {
  flex-shrink: 0;
  padding: 0.55rem 0 0.55rem 1rem;
  font-size: 1rem;
  opacity: 0.75;
  user-select: none;
}

.video-room-search-input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  color: #f1f5f9;
  font-size: 0.9rem;
  padding: 0.55rem 0.85rem 0.55rem 0.45rem;
  font-family: inherit;
}

.video-room-search-input::placeholder {
  color: #64748b;
}

.video-room-search-input:focus {
  outline: none;
}

/* =========================================
   V9.2 DENEYİM USTASI - ANİMASYON VE GÖLGELER
   ========================================= */

/* 1. Video Kartları (Yukarı kalkma efekti) */
.video-card {
  transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12) !important;
  cursor: pointer;
}

/* 2. Kategori Sekmeleri (Temel, Orta, İleri) — .nav-link ve bu projedeki .video-level-tab */
#video-categories .nav-link,
#video-categories .video-level-tab {
  transition: all 0.3s ease;
  border-radius: 50px;
  font-weight: 500;
}

#video-categories .nav-link:hover:not(.active),
#video-categories .video-level-tab:hover:not(.active) {
  background-color: #f1f3f5;
  transform: scale(1.05);
}

#video-categories .nav-link.active,
#video-categories .video-level-tab.active {
  box-shadow: 0 4px 10px rgba(13, 110, 253, 0.3);
}

/* 3. Arama Çubuğu Odaklanma (Focus) Parıltısı */
#video-search-input:focus {
  box-shadow: none !important;
}

.video-room-search-wrap:focus-within {
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25) !important;
  transform: scale(1.02);
  transition: all 0.3s ease;
}

/* =========================================
   V9.2.1 — Sekme hover & Google giriş
   ========================================= */

/* 1. Koyu tema — düzey sekmesi hover (V9.2’deki açık griyi yumuşatır) */
#video-categories .video-level-tab:hover:not(.active) {
  background-color: rgba(255, 255, 255, 0.08) !important;
}

/* 2. Google giriş butonu */
.google-login-btn,
#google-login-btn {
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.google-login-btn:hover,
#google-login-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(255, 255, 255, 0.1);
}

/* =========================================
   V9.2.3 ASİSTAN İSKELETİ (JS'DEN TAŞINDI)
   ========================================= */

@keyframes ai-fab-pulse {
  0%,
  100% {
    box-shadow:
      0 0 0 0 rgba(203, 213, 225, 0.35),
      0 0 20px rgba(148, 163, 184, 0.25),
      0 6px 22px rgba(15, 23, 42, 0.45);
  }
  50% {
    box-shadow:
      0 0 0 8px rgba(226, 232, 240, 0.2),
      0 0 28px rgba(59, 130, 246, 0.45),
      0 8px 28px rgba(30, 64, 175, 0.5);
  }
}

@media (prefers-reduced-motion: reduce) {
  #ai-chat-fab {
    animation: none !important;
  }
}

#ai-chat-wrapper {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-end;
  z-index: 120;
}

#ai-chat-fab {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(145deg, #1e40af 0%, #2563eb 45%, #3b82f6 100%);
  color: #f8fafc;
  border: 2px solid rgba(226, 232, 240, 0.85);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  line-height: 1;
  z-index: 9999;
  transition: transform 0.28s ease, border-color 0.28s ease, filter 0.28s ease;
  animation: ai-fab-pulse 2.6s ease-in-out infinite;
}

#ai-chat-fab:hover {
  transform: scale(1.1);
  border-color: #f1f5f9;
  filter: brightness(1.06);
}

#ai-chat-fab:focus-visible {
  outline: 2px solid #e2e8f0;
  outline-offset: 3px;
}

#ai-chat-window {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: min(320px, calc(100vw - 32px));
  max-height: min(440px, 72vh);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 9999;
  border-radius: 16px;
  border: 1px solid rgba(226, 232, 240, 0.22);
  background: rgba(15, 23, 42, 0.58);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

@media (max-width: 768px) {
  #ai-chat-window {
    right: -10px;
  }
}

#ai-chat-window.hidden {
  display: none !important;
}

.ai-chat-header {
  background: linear-gradient(120deg, #475569 0%, #94a3b8 35%, #e2e8f0 55%, #94a3b8 75%, #334155 100%);
  color: #0f172a;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(15, 23, 42, 0.12);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.35);
}

.ai-chat-header span {
  display: flex;
  align-items: center;
  gap: 8px;
}

#close-ai-chat {
  background: rgba(15, 23, 42, 0.12);
  border: 1px solid rgba(15, 23, 42, 0.2);
  color: #0f172a;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  font-size: 16px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

#close-ai-chat:hover {
  background: rgba(15, 23, 42, 0.2);
}

#ai-chat-messages {
  flex: 1;
  padding: 14px;
  overflow-y: auto;
  min-height: 260px;
  max-height: 360px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: rgba(2, 6, 23, 0.25);
}

.ai-chat-input-area {
  padding: 12px;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  display: flex;
  gap: 8px;
  align-items: center;
  background: rgba(15, 23, 42, 0.35);
}

.ai-hidden-file {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

#ai-upload-btn {
  flex-shrink: 0;
  background: rgba(148, 163, 184, 0.22);
  color: #e2e8f0;
  border: 1px solid rgba(226, 232, 240, 0.25);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.2s;
}

#ai-upload-btn:hover {
  background: rgba(96, 165, 250, 0.25);
  transform: scale(1.05);
}

#ai-user-input {
  flex: 1;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 22px;
  padding: 10px 16px;
  outline: none;
  font-size: 0.9rem;
  background: rgba(15, 23, 42, 0.55);
  color: #f1f5f9;
}

#ai-user-input::placeholder {
  color: #94a3b8;
}

#ai-user-input:focus {
  border-color: rgba(96, 165, 250, 0.65);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

#send-ai-msg {
  flex-shrink: 0;
  background: linear-gradient(145deg, #1e40af, #3b82f6);
  color: #fff;
  border: 1px solid rgba(226, 232, 240, 0.35);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 10px rgba(30, 64, 175, 0.4);
}

#send-ai-msg:hover {
  transform: scale(1.06);
}

/* =========================================
   V9.2.2 DENEYİM USTASI - ASİSTAN BALONLARI (TEMİZLENDİ)
   ========================================= */

#ai-chat-messages .ai-msg {
  border-radius: 14px;
  font-size: 0.9rem;
  line-height: 1.45;
  word-break: break-word;
  box-sizing: border-box;
}

/* Kullanıcının mesajı */
.user-message {
  background: linear-gradient(135deg, #0d6efd, #0a58ca);
  color: white;
  border-bottom-right-radius: 4px;
  box-shadow: 0 4px 10px rgba(13, 110, 253, 0.2);
  transition: all 0.3s ease;
  padding: 10px 14px;
  align-self: flex-end;
  max-width: 85%;
}

/* Yapay zekâ / asistan mesajı */
.ai-message,
.bot-message {
  background-color: rgba(255, 255, 255, 0.05);
  border-left: 3px solid #0d6efd;
  border-bottom-left-radius: 4px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(5px);
  transition: all 0.3s ease;
  color: #e2e8f0;
  padding: 10px 14px;
  align-self: flex-start;
  max-width: 85%;
}

.ai-msg-body {
  color: inherit;
}

/* 4. Yazıyor… göstergesi (ileride .typing-indicator ile kullanılabilir) */
.typing-indicator {
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% {
    opacity: 0.5;
    transform: scale(0.98);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0.5;
    transform: scale(0.98);
  }
}

/* =========================================
   V9.4.0 — Üst bar profil menüsü (Kişisel Karargah)
   ========================================= */

.user-profile-menu {
  position: relative;
  display: none;
  align-items: center;
  flex-shrink: 0;
}

.user-profile-menu-trigger {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem 0.25rem 0.25rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.55);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  max-width: 220px;
  transition: border-color 0.2s, background 0.2s;
}

.user-profile-menu-trigger:hover {
  border-color: rgba(139, 92, 246, 0.45);
  background: rgba(30, 41, 59, 0.75);
}

.nav-user-avatar-img {
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.nav-user-name-text {
  font-size: 0.88rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .nav-user-name-text {
    display: none;
  }
}

.user-profile-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 220px;
  margin: 0;
  padding: 0.35rem 0;
  list-style: none;
  background: var(--bg-card, #1e293b);
  border: 1px solid var(--border, #334155);
  border-radius: 10px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
  z-index: 120;
}

.user-profile-dropdown[hidden] {
  display: none !important;
}

.user-profile-menu-item {
  display: block;
  padding: 0.55rem 1rem;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.15s;
}

.user-profile-menu-item:hover {
  background: rgba(139, 92, 246, 0.12);
}

.user-profile-menu-logout {
  color: #f87171 !important;
}

.user-profile-menu-divider {
  height: 1px;
  margin: 0.35rem 0;
  background: rgba(148, 163, 184, 0.2);
  list-style: none;
}

/* V9.4.4 — Asker Künyesi (profil vitrini, ayarlar paneli) */
.profile-kunyosu-wrap {
  max-width: 640px;
  margin: 0 auto 1.75rem;
}

.profile-kunyosu-card {
  background: var(--bg-card, #1e293b);
  border: 1px solid var(--border, #334155);
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  overflow: hidden;
}

.profile-kunyosu-body {
  padding: 2rem 1.75rem;
  text-align: center;
}

.profile-kunyosu-avatar-wrap {
  margin-bottom: 1.25rem;
}

.profile-kunyosu-avatar {
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--bg-secondary, #f8fafc);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
  vertical-align: middle;
}

.profile-kunyosu-name {
  font-weight: 700;
  font-size: 1.35rem;
  margin: 0 0 0.35rem;
  color: var(--text, #f1f5f9);
}

.profile-kunyosu-email {
  margin: 0 0 1.25rem;
  color: var(--text-muted, #94a3b8);
  font-size: 0.95rem;
}

.profile-kunyosu-stats {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  margin: 0 0 1.5rem;
  padding: 0.85rem 1rem;
  background: rgba(148, 163, 184, 0.08);
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.profile-kunyosu-stat {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.profile-kunyosu-stat-border {
  border-right: 1px solid rgba(148, 163, 184, 0.2);
}

.profile-kunyosu-stat-value {
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.2;
}

.profile-kunyosu-stat-value.primary {
  color: #60a5fa;
}

.profile-kunyosu-stat-value.success {
  color: #34d399;
}

.profile-kunyosu-stat-label {
  color: var(--text-muted, #94a3b8);
  font-size: 0.8rem;
}

.profile-kunyosu-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.profile-kunyosu-fav-btn {
  border-radius: 999px;
  padding: 0.55rem 1.5rem;
}

/* --- V10.0 Vezne — Premium paywall (pricing vitrin) --- */
.pricing-paywall {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1200;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  box-sizing: border-box;
}

.pricing-paywall.is-open {
  display: flex;
}

.pricing-paywall__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.78);
  backdrop-filter: blur(10px);
}

.pricing-paywall__panel {
  position: relative;
  width: 100%;
  max-width: 920px;
  max-height: min(96vh, 880px);
  overflow-y: auto;
  border-radius: 20px;
  padding: 1.75rem 1.5rem 1.5rem;
  background: linear-gradient(155deg, rgba(30, 41, 59, 0.98) 0%, rgba(15, 23, 42, 0.99) 50%, rgba(15, 23, 42, 1) 100%);
  border: 1px solid rgba(139, 92, 246, 0.35);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06) inset,
    0 24px 48px rgba(0, 0, 0, 0.55),
    0 0 80px rgba(139, 92, 246, 0.12);
}

.pricing-paywall__shine {
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 80%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.22) 0%, transparent 70%);
  pointer-events: none;
}

.pricing-paywall__close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2.25rem;
  height: 2.25rem;
  border: none;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
  transition: background 0.15s;
}

.pricing-paywall__close:hover {
  background: rgba(239, 68, 68, 0.35);
  color: #fff;
}

.pricing-paywall__header {
  position: relative;
  text-align: center;
  margin-bottom: 1.5rem;
  padding: 0 1.5rem 0 0;
}

.pricing-paywall__eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #a78bfa;
  margin-bottom: 0.5rem;
}

.pricing-paywall__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.35rem, 3.5vw, 1.85rem);
  font-weight: 800;
  color: #f8fafc;
  letter-spacing: -0.02em;
}

.pricing-paywall__context {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
  color: #cbd5e1;
  line-height: 1.45;
}

.pricing-paywall__lead {
  margin: 0;
  font-size: 0.88rem;
  color: #94a3b8;
}

.pricing-paywall__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  position: relative;
  z-index: 1;
}

@media (max-width: 720px) {
  .pricing-paywall__grid {
    grid-template-columns: 1fr;
  }
}

.pricing-card {
  position: relative;
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(148, 163, 184, 0.18);
  overflow: hidden;
}

.pricing-card--featured {
  border-color: rgba(139, 92, 246, 0.55);
  box-shadow: 0 12px 32px rgba(139, 92, 246, 0.18);
}

.pricing-card__ribbon {
  position: absolute;
  top: 0.75rem;
  right: -2.25rem;
  transform: rotate(42deg);
  background: linear-gradient(90deg, #a855f7, #6366f1);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.35rem 2.5rem;
  text-transform: uppercase;
}

.pricing-card__inner {
  padding: 1.35rem 1.25rem 1.25rem;
}

.pricing-card__name {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: #e2e8f0;
}

.pricing-card__price {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  color: #94a3b8;
}

.pricing-card__amount {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  color: #f8fafc;
  letter-spacing: -0.03em;
}

.pricing-card__currency {
  font-size: 1rem;
  font-weight: 600;
  color: #cbd5e1;
  margin-left: 0.15rem;
}

.pricing-card__period {
  font-size: 0.9rem;
  color: #64748b;
}

.pricing-card__tagline {
  margin: 0 0 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: #34d399;
}

.pricing-card__features {
  margin: 0 0 1.1rem;
  padding: 0 0 0 1.1rem;
  font-size: 0.86rem;
  color: #cbd5e1;
  line-height: 1.55;
}

.pricing-card__features li {
  margin-bottom: 0.35rem;
}

.pricing-card__btn {
  width: 100%;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(255, 255, 255, 0.06);
  color: #f1f5f9;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.pricing-card__btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(167, 139, 250, 0.5);
}

.pricing-card__btn--primary {
  background: linear-gradient(135deg, #7c3aed 0%, #6366f1 100%);
  border: none;
  color: #fff;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.pricing-card__btn--primary:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.pricing-paywall__note {
  position: relative;
  z-index: 1;
  margin: 1.25rem 0 0;
  text-align: center;
  font-size: 0.78rem;
  color: #64748b;
}

.admin-menu-item:hover {
  background: #e94560;
  color: #fff !important;
  padding-left: 20px;
}

#admin-sub-menu {
  animation: fadeInSlide 0.3s ease-out;
}

@keyframes fadeInSlide {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.admin-dashboard-layout {
  display: none;
  grid-template-columns: 260px 1fr;
  gap: 0;
  min-height: 700px;
  background: #0f172a;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 2rem;
}

.content-panel.active.admin-dashboard-layout {
  display: grid;
}

/* Yönetim paneli hazırlanırken eski içeriğin flash yapmasını engeller. */
#panel-yonetim.admin-layout-pending > * {
  display: none !important;
}

.admin-sidebar {
  background: #1e293b;
  padding: 30px 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-logo {
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
  color: #e2e8f0;
}

.admin-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nav-btn {
  background: transparent;
  color: #94a3b8;
  border: none;
  padding: 14px 20px;
  text-align: left;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

.nav-btn:hover,
.nav-btn.active {
  background: #e94560;
  color: #fff;
  transform: translateX(5px);
}

.admin-main-view {
  padding: 40px;
  background: #0f172a;
  overflow-y: auto;
}

/* Temiz masa: içerik modülü sahnesi tam yükseklik */
#admin-icerik.admin-module-view {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 0;
}

#admin-icerik #admin-main-stage {
  flex: 1;
  min-height: 320px;
}

/* admin-action-card: Temiz Masa aksiyon kartları */
.admin-action-card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 16px;
  padding: 30px;
  width: 280px;
  max-width: 100%;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: #f8fafc;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  font: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.admin-action-card:hover {
  border-color: #38bdf8;
  transform: translateY(-5px);
  background: #1e293b;
  box-shadow:
    0 20px 25px -5px rgba(0, 0, 0, 0.2),
    0 8px 10px -6px rgba(0, 0, 0, 0.2);
}

.admin-action-card .icon {
  font-size: 48px;
  margin-bottom: 15px;
  display: block;
  line-height: 1;
}

.admin-module-view {
  animation: slideInRight 0.4s ease-out;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 1024px) {
  .admin-dashboard-layout {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    border-right: none;
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  }
}

.sonsuz-soru-editor {
  padding: 25px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 12px;
  background: #1a1a2e;
}

.admin-input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}

.admin-input-group label {
  font-size: 13px;
  font-weight: 600;
  color: #cbd5e1;
}

.admin-input-group input,
.admin-input-group textarea {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.65);
  color: #f8fafc;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 14px;
}

.admin-input-group textarea {
  min-height: 92px;
  resize: vertical;
}

.admin-input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.admin-action-btn {
  margin-top: 16px;
  background: linear-gradient(45deg, #e94560, #c0392b);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 6px 18px rgba(233, 69, 96, 0.28);
}

.admin-action-btn:hover {
  transform: translateY(-1px);
}

.admin-klon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.klon-kart {
  border: 2px solid rgba(255, 255, 255, 0.05);
  transition: 0.3s;
  text-align: center;
}

.klon-kart:hover {
  border-color: #e94560;
  transform: translateY(-5px);
}

.mini-btn {
  background: #00d2ff;
  color: #000;
  border: none;
  padding: 8px 15px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
  margin-top: 10px;
}

@media (max-width: 768px) {
  .admin-input-grid {
    grid-template-columns: 1fr;
  }
}

/* --- V11.0.9 Geniş ekran — kenar çubuğu aç/kapa --- */
@media (min-width: 769px) {
  .app.sidebar-collapsed {
    grid-template-columns: 0 minmax(0, 1fr);
  }

  .app.sidebar-collapsed .sidebar {
    overflow: hidden;
    padding: 0;
    border-right: none;
    pointer-events: none;
  }
}

@media (max-width: 768px) {
  .app.sidebar-collapsed .sidebar {
    display: none;
  }
}

/* Öğrenci testi: soru üstü çizim tuvali */
#solution-canvas {
  touch-action: none;
  image-rendering: auto;
}

/* Kalem paleti — yüzen çizim araçları (odak modu / test modalı) */
#canvas-toolbar.floating-pen-palette {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  right: max(20px, env(safe-area-inset-right, 0px));
  bottom: auto;
  left: auto;
  z-index: 10085;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: auto;
  background: linear-gradient(165deg, rgba(251, 246, 233, 0.96), rgba(245, 236, 214, 0.94));
  backdrop-filter: blur(14px) saturate(1.05);
  -webkit-backdrop-filter: blur(14px) saturate(1.05);
  padding: 10px 8px;
  border-radius: 18px;
  border: 1px solid rgba(180, 159, 118, 0.42);
  box-shadow:
    0 22px 42px rgba(2, 6, 23, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.75);
  cursor: default;
  user-select: auto;
  transition: box-shadow 0.2s ease;
}

.palette-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.palette-btn:hover {
  transform: translateY(-3px);
}

.palette-btn.active,
.palette-btn.active-color {
  box-shadow: 0 0 10px rgba(37, 99, 235, 0.5);
  border: 2px solid #2563eb;
}

.toolbar-size-btn.palette-btn {
  background: rgba(15, 23, 42, 0.08);
  color: #0f172a;
  font-weight: 800;
}

.toolbar-size-btn.active-size {
  background: rgba(37, 99, 235, 0.15);
  border: 2px solid #2563eb;
  box-shadow: 0 0 10px rgba(37, 99, 235, 0.35);
}

.toolbar-main {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toolbar-main-btn {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(176, 154, 116, 0.45);
  background: linear-gradient(180deg, rgba(255, 253, 247, 0.96), rgba(244, 236, 220, 0.94));
  color: #0f172a;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.92),
    0 4px 12px rgba(15, 23, 42, 0.12);
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.toolbar-main-btn svg {
  display: block;
}

.toolbar-main-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(59, 130, 246, 0.55);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 8px 16px rgba(37, 99, 235, 0.2);
}

.toolbar-main-btn.active {
  color: #f8fafc;
  border-color: rgba(37, 99, 235, 0.7);
  background: linear-gradient(145deg, #1d4ed8, #3b82f6);
  box-shadow:
    0 0 0 2px rgba(59, 130, 246, 0.25),
    0 10px 18px rgba(37, 99, 235, 0.28);
}

.toolbar-main-btn[data-toolbar-tool="pen"] {
  color: #1e3a8a; /* lacivert */
}

.toolbar-main-btn[data-toolbar-action="clear"] {
  color: #6b7280; /* gri */
}

.toolbar-main-btn[data-toolbar-tool="eraser"] {
  background: linear-gradient(180deg, #ffffff, #f8fafc); /* beyaz */
  color: #111827;
}

.toolbar-submenu {
  display: none;
  flex-direction: column;
  gap: 8px;
  padding-top: 6px;
  margin-top: 2px;
  border-top: 1px dashed rgba(176, 154, 116, 0.5);
}

.toolbar-submenu.is-open {
  display: flex;
}

.toolbar-submenu .tool-btn {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  border: 1px solid rgba(176, 154, 116, 0.42);
  background: rgba(255, 253, 247, 0.92);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.1);
}

.toolbar-submenu .tool-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(59, 130, 246, 0.6);
}

.toolbar-submenu .tool-btn.active-color,
.toolbar-submenu .tool-btn.active-size {
  border-color: rgba(37, 99, 235, 0.75);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.22);
}

#question-solving-root.sinema-aktif #canvas-toolbar.floating-pen-palette,
#question-solving-root.kucuk-ekran-aktif #canvas-toolbar.floating-pen-palette,
#question-solving-root #canvas-toolbar.floating-pen-palette {
  right: max(20px, env(safe-area-inset-right, 0px));
  top: 50%;
  transform: translateY(-50%);
}

.tool-btn {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.tool-btn:hover {
  transform: scale(1.15);
}

#canvas-toolbar.floating-pen-palette .palette-btn {
  width: 36px;
  height: 36px;
}

@media (max-width: 768px) {
  #canvas-toolbar.floating-pen-palette {
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    bottom: 0 !important;
    width: 100%;
    border-radius: 20px 20px 0 0;
    justify-content: center;
    padding: 12px;
    cursor: default;
    transform: none !important;
    flex-direction: row;
    gap: 12px;
    align-items: flex-start;
  }

  .toolbar-main,
  .toolbar-submenu.is-open {
    flex-direction: row;
  }
}

.palette-tools,
.palette-colors {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.palette-colors {
  transition: opacity 0.3s ease, filter 0.3s ease;
}

.palette-tools {
  gap: 12px;
}

.palette-divider {
  width: 2px;
  height: 32px;
  border-radius: 2px;
  background: rgba(15, 23, 42, 0.12);
}

.floating-pen-palette .palette-tool-btn.active {
  background: rgba(37, 99, 235, 0.12);
  border-color: rgba(37, 99, 235, 0.6);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.25);
}

.tool-btn.active-color {
  border-color: #0f172a;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.35);
}

.toolbar-color-btn.tool-btn {
  padding: 0;
}

#canvas-toolbar .toolbar-action-btn.tool-btn-clear {
  width: 35px;
  height: 35px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.06);
  color: #334155;
  font-size: 18px;
  border: 2px solid transparent;
}

#canvas-toolbar .toolbar-action-btn.tool-btn-clear:hover {
  color: #2563eb;
  border-color: rgba(37, 99, 235, 0.35);
  transform: scale(1.1);
}

/* V12 Radial kalem menüsü */
#canvas-toolbar.floating-radial-toolbar {
  position: fixed;
  top: max(20px, env(safe-area-inset-top, 0px));
  left: 50%;
  right: auto;
  transform: translateX(-50%);
  z-index: 10090;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#canvas-toolbar .radial-fab {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: linear-gradient(145deg, #ffffff, #f8fafc);
  color: #1e3a8a;
  box-shadow: 0 8px 16px rgba(15, 23, 42, 0.2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#canvas-toolbar .radial-menu {
  position: absolute;
  left: 50%;
  top: 42px;
  transform: translateX(-50%);
  width: 212px;
  height: 168px;
  pointer-events: none;
}

#canvas-toolbar .radial-item {
  position: absolute;
  left: 50%;
  top: 0;
  width: 36px;
  height: 36px;
  margin-left: -18px;
  border-radius: 50%;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: linear-gradient(165deg, rgba(251, 246, 233, 0.96), rgba(245, 236, 214, 0.95));
  color: #334155;
  box-shadow: 0 8px 16px rgba(2, 6, 23, 0.22);
  opacity: 0;
  transform: translate(0, 0) scale(0.92);
  transition: transform 0.22s ease, opacity 0.2s ease;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#canvas-toolbar.is-open .radial-item {
  opacity: 1;
  pointer-events: auto;
}

#canvas-toolbar .radial-item-hand { color: #0f172a; }
#canvas-toolbar .radial-item-pen {
  color: #1e3a8a;
  background: linear-gradient(145deg, #ffffff, #f8fafc);
  border-color: rgba(148, 163, 184, 0.65);
}
#canvas-toolbar .radial-item-eraser {
  color: #0f172a;
  background: linear-gradient(145deg, #ffffff, #f8fafc);
  border-color: rgba(148, 163, 184, 0.65);
}
#canvas-toolbar .radial-item-clear {
  color: #374151;
  background: linear-gradient(145deg, #ffffff, #f8fafc);
  border-color: rgba(148, 163, 184, 0.65);
}
#canvas-toolbar .radial-item-hand {
  color: #0f172a;
  background: linear-gradient(145deg, #ffffff, #f8fafc);
  border-color: rgba(148, 163, 184, 0.65);
}

#canvas-toolbar .radial-fab:hover,
#canvas-toolbar .radial-item:hover {
  filter: brightness(1.05);
}

#canvas-toolbar .radial-item svg,
#canvas-toolbar .radial-fab svg {
  display: block;
}

#canvas-toolbar .radial-icon-img {
  width: 26px;
  height: 26px;
  object-fit: contain;
  display: block;
  pointer-events: none;
}

/* Yay: merkeze eşit ~52px, sağ-sola daha geniş açı (−62° … +62°) */
#canvas-toolbar.is-open .radial-item-hand {
  transform: translate(-46px, 5px) scale(1);
}
#canvas-toolbar.is-open .radial-item-pen {
  transform: translate(-19px, 28px) scale(1);
}
#canvas-toolbar.is-open .radial-item-eraser {
  transform: translate(19px, 28px) scale(1);
}
#canvas-toolbar.is-open .radial-item-clear {
  transform: translate(46px, 5px) scale(1);
}

#canvas-toolbar .radial-item.active {
  border-color: rgba(37, 99, 235, 0.7);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2), 0 10px 20px rgba(37, 99, 235, 0.24);
}

#canvas-toolbar .radial-submenu {
  position: absolute;
  left: 50%;
  top: 126px;
  transform: translateX(-50%);
  display: none;
  flex-direction: row;
  gap: 6px;
  padding: 6px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 10px 20px rgba(2, 6, 23, 0.18);
}

#canvas-toolbar .radial-submenu.is-open {
  display: flex;
}

#canvas-toolbar .radial-submenu .tool-btn {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  border: 1px solid rgba(148, 163, 184, 0.42);
  background: rgba(255, 255, 255, 0.96);
}

@media (max-width: 768px) {
  #canvas-toolbar.floating-radial-toolbar {
    top: auto;
    bottom: max(12px, env(safe-area-inset-bottom, 0px));
    left: auto;
    right: max(12px, env(safe-area-inset-right, 0px));
    transform: none;
  }

  #canvas-toolbar .radial-menu {
    left: 50%;
    right: auto;
    top: 40px;
    bottom: auto;
    transform: translateX(-50%);
    width: 188px;
    height: 152px;
  }

  #canvas-toolbar.is-open .radial-item-hand { transform: translate(-39px, 2px) scale(1); }
  #canvas-toolbar.is-open .radial-item-pen { transform: translate(-16px, 22px) scale(1); }
  #canvas-toolbar.is-open .radial-item-eraser { transform: translate(16px, 22px) scale(1); }
  #canvas-toolbar.is-open .radial-item-clear { transform: translate(39px, 2px) scale(1); }

  #canvas-toolbar .radial-submenu {
    left: 50%;
    right: auto;
    top: 114px;
    transform: translateX(-50%);
  }
}

/* Soru Fabrikası — şekilli sorular üretim hattı */
.factory-accordion-stack:not(.is-accordion-open) .factory-accordion-header {
  margin-bottom: 0;
  border-radius: 8px;
  border-bottom: 1px solid #334155;
}

.factory-accordion-stack.is-accordion-open .factory-accordion-header {
  margin-bottom: 0;
  border-radius: 8px 8px 0 0;
  border-bottom: none;
}

.factory-accordion-body {
  display: none;
  background: #0f172a;
  padding: 25px;
  border: 1px solid #334155;
  border-top: none;
  border-radius: 0 0 8px 8px;
}

.factory-accordion-body.is-open {
  display: block;
}

.factory-accordion-header {
  background: #1e293b;
  padding: 15px 20px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid #334155;
  margin-bottom: 10px;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.factory-accordion-header:hover {
  background: #243449;
  border-color: #475569;
}

.factory-tab-btn {
  background: #1e293b;
  color: #94a3b8;
  border: 1px solid #334155;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 14px;
}

.factory-tab-btn:hover {
  background: #334155;
  color: white;
}

.factory-tab-btn.active {
  background: #38bdf8;
  color: #0f172a;
  font-weight: 600;
  border-color: #38bdf8;
}

.factory-textarea,
.factory-input {
  width: 100%;
  box-sizing: border-box;
  background: #1e293b;
  border: 1px solid #334155;
  color: #f8fafc;
  padding: 10px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
}

.factory-tab-strip {
  display: flex;
  gap: 10px;
  margin-bottom: 25px;
  border-bottom: 1px solid #334155;
  padding-bottom: 15px;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .factory-tab-btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

/* Bant 1 — SVG önizleme: beyaz tuval, siyah çizgi promptlarıyla uyum */
#temp-svg-preview svg {
  background-color: #fff;
  border: 1px solid #e2e8f0;
  display: block;
  margin: 0 auto;
}

/* Dijital Matbaa — A4 dizgi (html2canvas hedefi, ekran dışı) */
#pdf-export-container {
  position: absolute;
  top: -20000px;
  left: -20000px;
  width: 210mm;
  min-height: 297mm;
  box-sizing: border-box;
  background: white;
  padding: 20mm;
  color: black;
  font-family: "Times New Roman", Times, serif;
}

.pdf-header {
  text-align: center;
  border-bottom: 2px solid black;
  margin-bottom: 10mm;
  padding-bottom: 5mm;
}

.pdf-test-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 15mm;
  row-gap: 15mm;
}

.pdf-question-card {
  page-break-inside: avoid;
  font-size: 11pt;
  line-height: 1.4;
}

.pdf-question-card .pdf-q-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 10px auto;
  border: 1px solid #ccc;
}

.pdf-question-card .pdf-q-option {
  margin: 4px 0;
}

/* BEYAZ MOD */
html:has(body.beyaz-mod) {
  background-color: #f4f6f9;
}

body.beyaz-mod {
  --bg-deep: #f4f6f9;
  --bg-card: #ffffff;
  --bg-elevated: #f1f5f9;
  --border: #e2e8f0;
  --text: #1a1a1a;
  --text-muted: #64748b;
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.12);
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  background-color: #f4f6f9 !important;
  color: #1a1a1a !important;
}

body.dashboard-page.beyaz-mod {
  background-color: #f4f6f9 !important;
  background-image: none !important;
}

body.dashboard-page.beyaz-mod::before {
  opacity: 0.05 !important;
  filter: none !important;
}

/* Üst başlık şeridi (önceden --bg-deep ile koyu kalıyordu) */
body.beyaz-mod .header {
  background: #ffffff !important;
  border-bottom-color: #e2e8f0 !important;
  color: #1a1a1a !important;
}

body.beyaz-mod .sidebar-toggle-btn {
  color: #1a1a1a !important;
  background: rgba(15, 23, 42, 0.06) !important;
  border-color: #e2e8f0 !important;
}

/* Ana sayfa / video odası karşılama kartı: inline açık renkler + koyu zemin yaması */
body.beyaz-mod .welcome-guide {
  background: rgba(139, 92, 246, 0.08) !important;
  color: #1a1a1a !important;
  border-left-color: #7c3aed !important;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08) !important;
}

body.beyaz-mod .welcome-guide h2 {
  color: #0f172a !important;
}

body.beyaz-mod .welcome-guide h3 {
  color: #5b21b6 !important;
}

body.beyaz-mod .welcome-guide p,
body.beyaz-mod .welcome-guide li,
body.beyaz-mod .welcome-guide ul,
body.beyaz-mod .welcome-guide em {
  color: #1a1a1a !important;
}

body.beyaz-mod .welcome-guide strong {
  color: #0369a1 !important;
}

body.beyaz-mod .welcome-guide p:last-of-type {
  color: #047857 !important;
  border-top-color: rgba(15, 23, 42, 0.12) !important;
}

/* Üst çubuk — inline stilli yardımcı düğmeler */
body.beyaz-mod #btn-tema-degistir {
  color: #0f172a !important;
  border-color: #94a3b8 !important;
  background: rgba(148, 163, 184, 0.22) !important;
}

body.beyaz-mod #btnInstallPwa {
  color: #5b21b6 !important;
  border-color: rgba(91, 33, 182, 0.5) !important;
  background: rgba(139, 92, 246, 0.14) !important;
}

body.beyaz-mod .guest-header-bar > span {
  color: #475569 !important;
  border-color: #cbd5e1 !important;
  background: rgba(241, 245, 249, 0.95) !important;
}

body.beyaz-mod #btnGuestLogout {
  color: #991b1b !important;
  border-color: rgba(239, 68, 68, 0.45) !important;
  background: rgba(254, 226, 226, 0.85) !important;
}

body.beyaz-mod .sidebar,
body.beyaz-mod .main,
body.beyaz-mod .content-panel,
body.beyaz-mod .panel,
body.beyaz-mod .kart,
body.beyaz-mod .kokpit {
  background-color: #ffffff !important;
  color: #1a1a1a !important;
  border-color: #e2e8f0 !important;
}

body.beyaz-mod .question-solving-container,
body.beyaz-mod .question-canvas-wrap--text,
body.beyaz-mod .question-solving-media {
  background: #ffffff !important;
  color: #1a1a1a !important;
}

body.beyaz-mod svg path,
body.beyaz-mod svg line,
body.beyaz-mod svg rect,
body.beyaz-mod svg circle,
body.beyaz-mod svg polygon,
body.beyaz-mod svg polyline {
  stroke: #1a1a1a !important;
}

body.beyaz-mod svg text {
  fill: #1a1a1a !important;
}

/* Outline kalem butonu */
.toolbar-btn svg {
  display: block;
}

.floating-pen-palette .palette-tool-btn.active {
  background-color: rgba(247, 107, 83, 0.1);
  color: #f76b53 !important;
  border: 1px solid rgba(247, 107, 83, 0.3);
  box-shadow: 0 0 0 2px rgba(247, 107, 83, 0.15);
}

/* Sinema/Kucuk/Normal toolbar */
.question-mode-controls {
  position: absolute;
  top: max(16px, env(safe-area-inset-top, 0px));
  right: max(64px, env(safe-area-inset-right, 0px));
  z-index: 10072;
  display: inline-flex;
  gap: 8px;
  padding: 6px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.58);
  border: 1px solid rgba(148, 163, 184, 0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.question-mode-controls .btn-sinema,
.question-mode-controls .btn-kucuk-ekran,
.question-mode-controls .btn-normal-ekran {
  position: static;
  background: rgba(2, 6, 23, 0.45);
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: #f8fafc;
  border-radius: 10px;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.question-mode-controls .btn-sinema:hover,
.question-mode-controls .btn-kucuk-ekran:hover,
.question-mode-controls .btn-normal-ekran:hover {
  color: #f8fafc;
  border-color: rgba(96, 165, 250, 0.7);
  background: rgba(30, 64, 175, 0.45);
  transform: translateY(-1px);
}

.question-mode-controls .btn-sinema[aria-pressed="true"],
.question-mode-controls .btn-kucuk-ekran[aria-pressed="true"],
.question-mode-controls .btn-normal-ekran[aria-pressed="true"] {
  color: #f8fafc;
  border-color: rgba(56, 189, 248, 0.9);
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.88), rgba(59, 130, 246, 0.88));
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.25);
}

#question-solving-root.sinema-aktif,
.question-solving-container.sinema-aktif {
  position: fixed !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  width: min(98vw, 1520px) !important;
  height: 92vh !important;
  min-height: auto !important;
  max-height: 92vh !important;
  z-index: 10060 !important;
  background: #ffffff;
  border-radius: 14px;
  outline: 2px solid rgba(247, 107, 83, 0.45);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.82) !important;
}

body.beyaz-mod #question-solving-root.sinema-aktif,
body.beyaz-mod .question-solving-container.sinema-aktif {
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.6) !important;
}

#question-solving-root.kucuk-ekran-aktif,
.question-solving-container.kucuk-ekran-aktif {
  position: fixed !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  width: min(54vw, 760px) !important;
  height: min(58vh, 560px) !important;
  min-height: auto !important;
  max-height: 58vh !important;
  z-index: 10060 !important;
  background: #ffffff;
  border-radius: 14px;
  outline: 2px solid rgba(56, 189, 248, 0.6);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.72) !important;
}

/* =========================================
   BEYAZ MOD (GÜNDÜZ) - YAZI RENGİ KURTARICISI
   (body.beyaz-mod: metin/kart/modal/SVG zorlaması — en sonda, !important)
   ========================================= */

/* 1. Temel Metinler */
body.beyaz-mod {
  color: #1a1a1a !important;
}

/* 2. Başlıklar ve Paragraflar */
body.beyaz-mod h1,
body.beyaz-mod h2,
body.beyaz-mod h3,
body.beyaz-mod h4,
body.beyaz-mod h5,
body.beyaz-mod h6,
body.beyaz-mod p,
body.beyaz-mod span,
body.beyaz-mod strong,
body.beyaz-mod label {
  color: #1a1a1a !important;
}

/* 3. Kartlar, Paneller ve Modal İçleri */
body.beyaz-mod .kart,
body.beyaz-mod .panel,
body.beyaz-mod .modal,
body.beyaz-mod .soru-karti,
body.beyaz-mod .modal-title,
body.beyaz-mod .modal-meta {
  color: #1a1a1a !important;
}

/* 4. Birincil buton yazıları */
body.beyaz-mod .btn-primary {
  color: #ffffff !important;
}

/* 5. Geometri / shape-router SVG (çizgiler ve etiketler) */
body.beyaz-mod svg path,
body.beyaz-mod svg line,
body.beyaz-mod svg rect,
body.beyaz-mod svg circle,
body.beyaz-mod svg polygon,
body.beyaz-mod svg polyline {
  stroke: #1a1a1a !important;
}

body.beyaz-mod svg text {
  fill: #1a1a1a !important;
}

/* İleride: color/background için :root + body.beyaz-mod üzerinde CSS variables ile tek noktadan tema (şimdilik yama yeterli). */

/* --- Denemeler — Premium grid kokpit --- */
.denemeler-kokpit {
  padding: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.denemeler-kategori-spacer {
  margin-top: 40px;
}

.mt-40 {
  margin-top: 40px;
}

.deneme-grid-ikili {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.deneme-grid-ikili .deneme-kart {
  min-height: 260px;
}

/* Denemeler: bank_tests listesi (kokpit → test listesi) */
.denemeler-test-list-view {
  padding: 16px;
  max-width: 1100px;
  margin: 0 auto;
}

.denemeler-list-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border, rgba(255, 255, 255, 0.1));
}

.btn-denemeler-kokpit-back {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent, #3b82f6);
  border: 1px solid rgba(59, 130, 246, 0.4);
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  font: inherit;
  transition: background 0.2s, color 0.2s;
}

.btn-denemeler-kokpit-back:hover {
  background: #3b82f6;
  color: #fff;
}

.denemeler-list-title {
  margin: 0;
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 700;
  color: var(--text);
  flex: 1;
  min-width: 200px;
}

.denemeler-test-list-body {
  min-height: 120px;
}

.deneme-yayin-drawer {
  position: fixed;
  inset: 0;
  z-index: 12040;
  pointer-events: none;
}

.deneme-yayin-drawer:not([hidden]) {
  pointer-events: auto;
}

.deneme-yayin-drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(2px);
}

.deneme-yayin-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(360px, 92vw);
  height: 100%;
  max-height: 100%;
  overflow: auto;
  padding: 20px 18px 24px;
  background: var(--surface, #0f172a);
  border-left: 1px solid var(--border, rgba(255, 255, 255, 0.1));
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.deneme-yayin-drawer-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
}

.deneme-yayin-drawer-test-name {
  margin: 0;
  font-size: 0.95rem;
  color: var(--accent, #38bdf8);
  font-weight: 600;
}

.deneme-yayin-drawer-hint {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-muted, #94a3b8);
}

.btn-deneme-yayin-sec {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(59, 130, 246, 0.45);
  background: rgba(59, 130, 246, 0.12);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.btn-deneme-yayin-sec:hover {
  background: rgba(59, 130, 246, 0.22);
  border-color: rgba(59, 130, 246, 0.65);
}

.btn-deneme-yayin-sec.deneme-yayin-sec-premium {
  border-color: rgba(245, 158, 11, 0.5);
  background: rgba(245, 158, 11, 0.12);
}

.btn-deneme-yayin-sec.deneme-yayin-sec-premium:hover {
  background: rgba(245, 158, 11, 0.2);
  border-color: rgba(245, 158, 11, 0.7);
}

.btn-deneme-yayin-drawer-kapat {
  margin-top: auto;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border, rgba(255, 255, 255, 0.12));
  background: transparent;
  color: var(--text-muted, #94a3b8);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.btn-deneme-yayin-drawer-kapat:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.2);
}

body.beyaz-mod .deneme-yayin-drawer-panel {
  background: #fff;
  border-left-color: #e5e7eb;
  box-shadow: -8px 0 32px rgba(15, 23, 42, 0.08);
}

body.beyaz-mod .deneme-yayin-drawer-backdrop {
  background: rgba(15, 23, 42, 0.35);
}

body.beyaz-mod .denemeler-list-toolbar {
  border-bottom-color: #e5e7eb;
}

body.beyaz-mod .denemeler-list-title {
  color: #1a1a1a !important;
}

.kategori-baslik-alani {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 10px;
  flex-wrap: wrap;
  gap: 12px;
}

.kategori-baslik-alani h2 {
  margin: 0;
  font-size: clamp(1.15rem, 2.8vw, 1.45rem);
  font-weight: 700;
  color: var(--text);
}

.btn-resimden-ekle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #8b5cf6, #6d28d9);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn-resimden-ekle:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.55);
}

.btn-resimden-ekle svg {
  flex-shrink: 0;
}

.deneme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.deneme-kart {
  background: var(--bg-elevated, #2a2a2a);
  border: 1px solid var(--border, #333);
  border-radius: 14px;
  padding: 22px 20px;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 220px;
}

.deneme-kart:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow, 0 8px 25px rgba(0, 0, 0, 0.35));
  border-color: rgba(59, 130, 246, 0.55);
}

.deneme-kart.brans-mat {
  border-top: 3px solid #6366f1;
}
.deneme-kart.brans-fiz {
  border-top: 3px solid #f59e0b;
}
.deneme-kart.brans-kim {
  border-top: 3px solid #10b981;
}
.deneme-kart.brans-biy {
  border-top: 3px solid #ec4899;
}
.deneme-kart.genel-tyt {
  border-top: 3px solid #3b82f6;
}
.deneme-kart.genel-ayt {
  border-top: 3px solid #8b5cf6;
}
.deneme-kart.online-tyt {
  border-top: 3px solid #ef4444;
}
.deneme-kart.online-ayt {
  border-top: 3px solid #f97316;
}

.kart-ikon {
  font-size: 40px;
  margin-bottom: 10px;
  line-height: 1;
}

.deneme-kart h3 {
  margin: 0 0 10px 0;
  font-size: 1.2rem;
  color: var(--text);
}

.deneme-kart p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0 0 20px 0;
  flex-grow: 1;
  line-height: 1.45;
}

.btn-sinava-basla {
  background: rgba(59, 130, 246, 0.12);
  color: var(--accent, #3b82f6);
  border: 1px solid rgba(59, 130, 246, 0.35);
  padding: 10px 12px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  width: 100%;
}

.deneme-kart:hover .btn-sinava-basla {
  background: #3b82f6;
  color: #fff;
  border-color: #3b82f6;
}

.canli-rozet {
  display: inline-block;
  background: #ef4444;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 10px;
  animation: deneme-canli-pulse 2s ease-in-out infinite;
}

@keyframes deneme-canli-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.72;
  }
}

@media (max-width: 640px) {
  .kategori-baslik-alani {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-resimden-ekle {
    width: 100%;
  }

  .denemeler-kokpit {
    padding: 16px 12px;
  }
}

/* Denemeler — Beyaz mod */
body.beyaz-mod .deneme-kart {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06);
}

body.beyaz-mod .deneme-kart:hover {
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
}

body.beyaz-mod .deneme-kart h3 {
  color: #1a1a1a !important;
}

body.beyaz-mod .deneme-kart p {
  color: #6b7280 !important;
}

body.beyaz-mod .kategori-baslik-alani {
  border-bottom-color: #e5e7eb;
}

body.beyaz-mod .kategori-baslik-alani h2 {
  color: #1a1a1a !important;
}

/* Mor butondaki ikon: global SVG stroke zırhını ezer */
body.beyaz-mod .btn-resimden-ekle svg path,
body.beyaz-mod .btn-resimden-ekle svg circle,
body.beyaz-mod .btn-resimden-ekle svg polyline,
body.beyaz-mod .btn-resimden-ekle svg rect,
body.beyaz-mod .btn-resimden-ekle svg line {
  stroke: #ffffff !important;
}

/* ——— Var Akış (panel-varakis) ——— */
#panel-varakis {
  padding: 0;
  min-height: min(calc(100dvh - 4rem), 900px);
}

#panel-varakis.content-panel {
  background: #0a0a0a;
}

.var-akis-root {
  --var-akis-primary: #e63946;
  max-width: 420px;
  margin: 0 auto;
  padding: 0.75rem 0 1rem;
}

.var-akis-container {
  position: relative;
  width: 100%;
  max-width: 400px;
  height: min(72dvh, 640px);
  margin: 0 auto;
  background-color: #000;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.var-akis-empty-state {
  position: absolute;
  inset: 0;
  z-index: 28;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(180deg, #0f172a 0%, #020617 100%);
  text-align: center;
}

.var-akis-empty-state[hidden] {
  display: none !important;
}

.var-akis-empty-inner {
  max-width: 280px;
}

.var-akis-empty-title {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: #f8fafc;
  line-height: 1.35;
}

.var-akis-empty-text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.55;
  color: #94a3b8;
}

@media (max-width: 480px) {
  .var-akis-container {
    border-radius: 0;
    max-width: none;
    height: min(78dvh, 700px);
  }
}

.var-akis-video-frame {
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#varAkisYtPlayerContainer {
  width: 100%;
  height: 100%;
}

#varAkisYtPlayerContainer iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.var-akis-yukleniyor {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 30;
  gap: 14px;
}

.var-akis-spinner {
  width: 44px;
  height: 44px;
  border: 4px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--var-akis-primary, #e63946);
  border-radius: 50%;
  animation: var-akis-spin 0.8s linear infinite;
}

.var-akis-spinner-yazi {
  color: #aaa;
  font-size: 13px;
}

@keyframes var-akis-spin {
  to {
    transform: rotate(360deg);
  }
}

.var-akis-smart-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
}

.var-akis-ses-uyari {
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 10px 20px;
  border-radius: 20px;
  font-family: sans-serif;
  animation: var-akis-pulse 1.5s infinite;
  z-index: 11;
}

.var-akis-play-pause-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 50px;
  color: white;
  opacity: 0.8;
  display: none;
  z-index: 12;
  pointer-events: none;
}

@keyframes var-akis-pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.var-akis-actions {
  position: absolute;
  right: 12px;
  bottom: 72px;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.var-akis-action-btn {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 20px;
  cursor: default;
  backdrop-filter: blur(4px);
  opacity: 0.6;
}

.var-akis-sidebar-bottom {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
}

.var-akis-footer-logo {
  height: 28px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  opacity: 0.9;
}

.var-akis-hint {
  text-align: center;
  font-size: 0.78rem;
  color: #94a3b8;
  padding: 0.75rem 1rem 0;
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.45;
}

/* TSK-007 — dokunma alanı (dashboard düzenine uyumlu; panel fixed değil) */
#panel-varakis #varAkisTouchArea {
  touch-action: none;
  outline: none;
  overflow: hidden;
}

#panel-varakis #varAkisTouchArea:focus-visible {
  outline: 2px solid var(--tsk-focus-color, #1f3a8a);
  outline-offset: -2px;
}

#varAkisLikeBtn.var-akis-action-btn {
  cursor: pointer;
  opacity: 1;
}

#varAkisLikeBtn.var-akis-action-btn.is-liked {
  filter: drop-shadow(0 0 6px rgba(239, 68, 68, 0.65));
}

.var-akis-heart-pop {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 99999;
  pointer-events: none;
  font-size: 2.5rem;
  line-height: 1;
  transform: translate(-50%, -50%) scale(0.5);
  opacity: 0;
  transition: transform 0.4s ease-out, opacity 0.35s ease-out;
}

.var-akis-heart-pop--show {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}