/* ─────────────────────────────────────────────────────────────────────────
   arsiv — açık tema, tek dosya, build adımsız.

   Renk kontrast oranları (WCAG 2.1, gerçek relative-luminance hesabıyla
   doğrulandı — küçük metin ≥4.5:1, büyük/dekoratif metin ≥3:1):

     --color-ink       / --color-paper    → 14.02:1
     --color-ink       / --color-surface  → 14.99:1
     --color-ink-muted / --color-paper    →  5.31:1
     --color-ink-muted / --color-surface  →  5.68:1
     --color-accent    / --color-paper    →  4.70:1  (bağlantı/metin kullanımı)
     --color-accent    / --color-surface  →  5.02:1
     --color-on-accent / --color-accent   →  5.02:1  (buton üstü beyaz metin)
     --color-danger    / --color-paper    →  6.15:1
     --color-on-danger / --color-danger   →  6.57:1

   Kenarlık/gölge tonları yalnız dekoratif ayraçlardır, metin taşımaz —
   WCAG metin-kontrast kuralına tabi değildir.
   ───────────────────────────────────────────────────────────────────────── */

:root {
  /* Renkler — TEK tanım yeri. Bu dosyada başka hiçbir yerde ham hex/rgb yok. */
  --color-paper: #faf7f1;
  --color-surface: #ffffff;
  --color-surface-sunken: #f3ede2;
  --color-border: #e4ddcf;
  --color-border-strong: #d3c9b6;
  --color-ink: #2b2620;
  --color-ink-muted: #6e6656;
  --color-accent: #b45309;
  --color-accent-strong: #963f05;
  --color-accent-soft: #f3e4d3;
  --color-on-accent: #ffffff;
  --color-danger: #b42318;
  --color-danger-soft: #f6e3e1;
  --color-on-danger: #ffffff;
  --color-focus: #b45309;
  --color-progress-track-bg: rgb(255 255 255 / 22%);

  /* Tipografi — en fazla 4 boyut kademesi */
  --font-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.9375rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --line-height-base: 1.5;

  /* Aralık skalası */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Yarıçap skalası */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Katmanlama — ince kenarlık + çok hafif gölge, ağır drop-shadow yok */
  --shadow-sm: 0 1px 2px rgb(43 38 32 / 6%), 0 1px 1px rgb(43 38 32 / 4%);
  --shadow-md: 0 4px 12px rgb(43 38 32 / 8%);

  --touch-target: 44px;
  --transition-fast: 120ms ease;
  --transition-base: 180ms ease;
}

/* ── Sıfırlama ─────────────────────────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

/* `hidden` özniteliği HER ZAMAN kazanır — aksi halde .btn gibi `display`
   ayarlayan bileşen sınıfları (özgüllükleri eşit/daha yüksek olduğu için)
   native `[hidden] { display: none }` UA kuralını ezip elemanı görünür bırakır. */
[hidden] {
  display: none !important;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
p {
  margin: 0;
}

a {
  color: var(--color-accent);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
  padding: 0;
  margin: -1px;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

/* ── Butonlar / form kontrolleri ──────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--touch-target);
  padding: 0 var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast),
    opacity var(--transition-fast);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-accent-strong);
}

.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-border-strong);
  color: var(--color-ink);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--color-accent);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink-muted);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  color: var(--color-ink);
  background: var(--color-surface-sunken);
}

.btn-danger-ghost {
  background: transparent;
  color: var(--color-danger);
  border-color: transparent;
}

.btn-danger-ghost:hover:not(:disabled) {
  background: var(--color-danger-soft);
}

.btn-block {
  width: 100%;
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.field-label {
  font-size: var(--font-size-sm);
  color: var(--color-ink-muted);
  font-weight: 600;
}

.field-hint {
  font-size: var(--font-size-sm);
  color: var(--color-ink-muted);
}

.field-input,
.field-textarea {
  min-height: var(--touch-target);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink);
}

.field-textarea {
  min-height: calc(var(--touch-target) * 1.6);
  resize: vertical;
}

.field-input:focus,
.field-textarea:focus {
  border-color: var(--color-accent);
}

.field-error {
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

/* ── Uygulama iskeleti ─────────────────────────────────────────────────── */

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  /* Dikey padding kucultuldu: marka linki artik kendi 44px'ini tasiyor,
     eski padding ust bari gereksiz sisirirdi. Gorsel yukseklik ~ayni kalir. */
  padding: var(--space-2) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.topbar-brand {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-ink);
  text-decoration: none;
  border-radius: var(--radius-sm);
  /* Dokunma yuksekligi: 27px -> 44px. Header'in padding'i linkin kendi
     hit-rect'ine dahil DEGIL - flex align-items:center yalnizca dikeyde ortalar,
     tiklanabilir kutuyu buyutmez (2026-08-19 tasarim denetimi). */
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.topbar-brand:hover {
  color: var(--color-accent);
}

.view-root {
  flex: 1;
  padding: var(--space-5);
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
}

.loading-text,
.empty-text,
.error-text {
  color: var(--color-ink-muted);
  padding: var(--space-6) 0;
  text-align: center;
}

.error-text {
  color: var(--color-danger);
}

/* ── Giriş ekranı ──────────────────────────────────────────────────────── */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
}

.login-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-5);
  text-align: center;
}

/* ── Takvim ────────────────────────────────────────────────────────────── */

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.calendar-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.calendar-nav {
  display: flex;
  gap: var(--space-2);
}

.calendar-nav-btn {
  width: var(--touch-target);
  height: var(--touch-target);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  font-size: var(--font-size-md);
  cursor: pointer;
}

.calendar-nav-btn:hover:not(:disabled) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.calendar-nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  border-color: var(--color-border);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.calendar-weekday {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-ink-muted);
  text-align: center;
  padding-bottom: var(--space-1);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-2);
}

.day-cell {
  min-height: 108px;
  border-radius: var(--radius-md);
  padding: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.day-cell--empty {
  background: transparent;
  border-color: transparent;
  color: var(--color-ink-muted);
  opacity: 0.55;
}

.day-cell--filler {
  visibility: hidden;
}

.day-number {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-ink-muted);
}

.day-cell--today .day-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.session-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.session-card {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  text-align: left;
  cursor: pointer;
  min-height: var(--touch-target);
  width: 100%;
}

.session-card:hover {
  background: var(--color-surface-sunken);
  border-color: var(--color-border);
}

.session-thumb {
  width: 40px;
  height: 24px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--color-surface-sunken);
  flex-shrink: 0;
}

.session-meta {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.session-time {
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.session-duration {
  font-size: var(--font-size-sm);
  color: var(--color-ink-muted);
}

.session-flagbadge {
  margin-left: auto;
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: 999px;
  padding: 0 var(--space-2);
  flex-shrink: 0;
}

.day-more {
  display: flex;
  align-items: center;
  min-height: var(--touch-target);
  padding: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  width: 100%;
}

.day-more:hover {
  text-decoration: underline;
}

/* Büyük gün-görünümü kartları (#/gun/...) — takvim kartının aynısı, geniş */

.session-card--large {
  padding: var(--space-3);
  border-color: var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-md);
}

.session-card--large .session-thumb {
  width: 96px;
  height: 54px;
}

.day-view-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.day-view-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.day-session-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.back-link {
  display: inline-flex;
  align-items: center;
  min-height: var(--touch-target);
  padding: 0 var(--space-2);
  color: var(--color-ink-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

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

/* ── Oynatıcı ──────────────────────────────────────────────────────────── */

.player-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.player-title {
  font-size: var(--font-size-md);
  font-weight: 700;
}

.player-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: var(--space-5);
  align-items: start;
}

.player-main {
  min-width: 0;
}

.player-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-ink);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-media video {
  width: 100%;
  height: 100%;
  display: block;
}

.prep-panel {
  color: var(--color-on-accent);
  width: 100%;
  max-width: 360px;
  padding: var(--space-5);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
}

.prep-phase {
  font-size: var(--font-size-md);
  font-weight: 700;
}

.prep-status {
  font-size: var(--font-size-sm);
  opacity: 0.85;
}

.prep-note {
  font-size: var(--font-size-sm);
  opacity: 0.75;
}

.progress-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--color-progress-track-bg);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: var(--progress-percent, 0%);
  background: var(--color-on-accent);
  border-radius: inherit;
  transition: width var(--transition-base);
}

.prep-error {
  font-size: var(--font-size-base);
}

.player-timeline {
  margin-top: var(--space-3);
}

.timeline-track {
  position: relative;
  height: 20px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-sunken);
  border: 1px solid var(--color-border);
}

/* Gorunur isaret 14px, DOKUNMA alani 44px.
   Tik gercek bir <button>: basinca video o ana atliyor. 14x14 dokunma yuzeyi
   gereken alanin ~%10'uydu (2026-08-19 tasarim denetimi) - parmakla guvenilir
   sekilde vurulamiyordu. Kutuyu buyutmek yerine gorunur kareyi ::before'a alip
   butonun KENDISINI 44x44 yaptik: hedef parmagin bekledigi yerde buyudu, tasarim
   ayni kaldi. Sasede saydam kalan alan zaman cizelgesinin ustunde durur ve
   altindaki scrubber'i kapatmasin diye dikeyde ortalanir. */
.timeline-tick {
  position: absolute;
  top: 50%;
  left: var(--tick-pos, 0%);
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-tick::before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: var(--color-accent);
}

.timeline-tick:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 37px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-ink);
  color: var(--color-paper);
  font-size: var(--font-size-sm);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
}

.player-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.sidebar-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.sidebar-section-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-3);
}

.mark-btn {
  margin-bottom: var(--space-3);
}

.flag-form {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-sunken);
}

.flag-form-actions {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
}

.flags-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.flag-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--touch-target);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.flag-row:hover {
  background: var(--color-surface-sunken);
}

.flag-row-jump {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  padding: var(--space-1) 0;
  min-height: var(--touch-target);
}

.flag-row-jump:active {
  color: var(--color-accent-strong);
}

.flag-time {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
  min-width: 3.5em;
}

.flag-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.flag-label {
  font-size: var(--font-size-base);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.flag-sub {
  font-size: var(--font-size-sm);
  color: var(--color-ink-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.flag-delete-btn {
  width: var(--touch-target);
  height: var(--touch-target);
  flex-shrink: 0;
  border-radius: var(--radius-md);
  border: none;
  background: none;
  color: var(--color-ink-muted);
  cursor: pointer;
}

.flag-delete-btn:hover {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.flags-empty {
  color: var(--color-ink-muted);
  font-size: var(--font-size-sm);
}

.siblings-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sibling-row {
  display: block;
  width: 100%;
  min-height: var(--touch-target);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: none;
  text-align: left;
  cursor: pointer;
  font-size: var(--font-size-sm);
}

.sibling-row:hover {
  background: var(--color-surface-sunken);
}

.sibling-row--current {
  color: var(--color-accent);
  font-weight: 700;
}

/* ── Bildirim (toast) ──────────────────────────────────────────────────── */

#toast-region {
  position: fixed;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: 100;
  width: min(420px, calc(100vw - var(--space-6)));
}

.toast {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  background: var(--color-ink);
  color: var(--color-paper);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-md);
}

.toast-message {
  font-size: var(--font-size-base);
}

.toast-action {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--color-accent-soft);
  font-weight: 700;
  cursor: pointer;
  min-height: 36px;
  padding: 0 var(--space-2);
}

.toast-action:hover {
  text-decoration: underline;
}

/* ── Duyarlı kırılımlar ────────────────────────────────────────────────── */

@media (max-width: 980px) {
  .player-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .view-root {
    padding: var(--space-4) var(--space-3);
  }

  .calendar-weekdays {
    display: none;
  }

  .calendar-grid {
    grid-template-columns: 1fr;
  }

  .day-cell--filler {
    display: none;
  }

  .day-cell {
    min-height: unset;
    flex-direction: row;
    align-items: center;
    gap: var(--space-3);
  }

  .day-cell--empty {
    padding: var(--space-1) var(--space-2);
  }

  .day-cell .session-list {
    flex: 1;
  }

  .session-card--large .session-thumb {
    width: 64px;
    height: 36px;
  }
}

/* ── Azaltılmış hareket ────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}