/* ==========================================================================
   Erişilebilir Çevrim İçi Video Kesici - Yüksek Kontrastlı Saf Siyah Tema
   WCAG 2.2 AAA ve iOS Safari / VoiceOver Standartlarına Uygundur
   ========================================================================== */

:root {
  --bg-color: #000000;
  --surface-color: #121212;
  --surface-border: #333333;
  --surface-border-active: #00e5ff;
  
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #999999;
  
  --accent-cyan: #00e5ff;
  --accent-yellow: #ffd600;
  --accent-green: #00e676;
  --accent-red: #ff3366;
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --min-touch-target: 48px;
}

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

html {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Ekran Okuyucu Yardımcı Sınıfı */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Erişilebilir Hızlı Atlama Bağlantısı */
.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  background: var(--accent-yellow);
  color: #000000;
  font-weight: 700;
  padding: 12px 20px;
  z-index: 1000;
  text-decoration: none;
  border-radius: 4px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
  outline: 3px solid #ffffff;
}

/* Odaklama (Focus Ring) Belirginliği */
:focus-visible {
  outline: 3px solid var(--accent-cyan);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Üst Başlık */
.app-header {
  background-color: var(--surface-color);
  border-bottom: 2px solid var(--surface-border);
  padding: 16px 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 28px;
}

.app-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.badge-zero-retention {
  background-color: #0d2818;
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* Ana Bölüm */
.app-main {
  flex: 1;
  padding-top: 24px;
  padding-bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Gizlilik Uyarısı */
.privacy-alert {
  background-color: #1a1500;
  border: 2px solid var(--accent-yellow);
  color: #fffde7;
  padding: 14px 18px;
  border-radius: 8px;
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Kart Yapısı */
.card {
  background-color: var(--surface-color);
  border: 2px solid var(--surface-border);
  border-radius: 12px;
  padding: 24px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--surface-border);
}

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--min-touch-target);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  border: 2px solid transparent;
  gap: 8px;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn-large {
  min-height: 56px;
  font-size: 1.15rem;
  width: 100%;
}

.btn-primary {
  background-color: var(--accent-cyan);
  color: #000000;
  border-color: var(--accent-cyan);
}

.btn-primary:hover {
  background-color: #5cf2ff;
}

.btn-secondary {
  background-color: #242424;
  color: var(--text-primary);
  border-color: #444444;
}

.btn-secondary:hover {
  background-color: #333333;
  border-color: #666666;
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid #555555;
}

.btn-outline:hover {
  background-color: #1a1a1a;
  border-color: var(--accent-cyan);
}

.btn-action {
  background-color: var(--accent-yellow);
  color: #000000;
  border-color: var(--accent-yellow);
}

.btn-action:hover {
  background-color: #ffe552;
}

.btn-download {
  background-color: var(--accent-green);
  color: #000000;
  border-color: var(--accent-green);
}

.btn-download:hover {
  background-color: #33ff99;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* Yükleme Alanı */
.file-upload-section {
  text-align: center;
}

.file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.upload-dropzone {
  border: 2px dashed #444444;
  border-radius: 10px;
  padding: 32px 16px;
  background-color: #0a0a0a;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.upload-hint {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.file-info {
  background-color: #1a1a1a;
  border: 1px solid #444444;
  padding: 12px 16px;
  border-radius: 8px;
  width: 100%;
  max-width: 500px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.file-name-text {
  color: var(--accent-cyan);
  word-break: break-all;
}

.file-size-text {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Video Oynatıcı */
.video-wrapper {
  background-color: #000000;
  border: 2px solid var(--surface-border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-height: 480px;
}

.video-container-relative {
  position: relative;
  display: inline-block;
  width: 100%;
  max-height: 480px;
}

#video-player {
  width: 100%;
  max-height: 480px;
  background-color: #000000;
  display: block;
}

/* Canlı Logo / Filigran Önizleme Katmanı */
.video-overlay-layer {
  position: absolute;
  pointer-events: none;
  z-index: 10;
  max-width: 25%;
  max-height: 25%;
  transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-overlay-layer img {
  width: 100%;
  height: auto;
  max-height: 100px;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.85));
}

/* Konum Sınıfları */
.video-overlay-layer.pos-bottom-right {
  bottom: 50px;
  right: 18px;
}

.video-overlay-layer.pos-top-right {
  top: 18px;
  right: 18px;
}

.video-overlay-layer.pos-bottom-left {
  bottom: 50px;
  left: 18px;
}

.video-overlay-layer.pos-top-left {
  top: 18px;
  left: 18px;
}

.video-overlay-layer.pos-center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.playback-timer-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.timer-separator {
  color: var(--text-muted);
}

.player-controls-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.marker-actions-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

/* Kesme Zamanı Kontrolleri */
.time-fieldset {
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 20px;
  background-color: #0a0a0a;
}

.fieldset-legend {
  padding: 0 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.highlight-val {
  color: var(--accent-yellow);
}

.highlight-green {
  color: var(--accent-green);
}

/* Range Slider */
.slider-wrapper {
  margin: 16px 0;
}

input[type="range"] {
  width: 100%;
  height: 20px;
  -webkit-appearance: none;
  background: transparent;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 12px;
  background: #333333;
  border-radius: 6px;
  border: 1px solid #555555;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 28px;
  width: 28px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid #ffffff;
  margin-top: -8px;
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
}

input[type="range"]:focus-visible::-webkit-slider-thumb {
  outline: 3px solid #ffffff;
}

/* Sayısal Saat-Dakika-Saniye Girişleri */
.time-inputs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.input-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-field label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.input-field input[type="number"] {
  background-color: #1a1a1a;
  color: var(--text-primary);
  border: 2px solid #444444;
  border-radius: 6px;
  height: var(--min-touch-target);
  font-size: 1.15rem;
  font-weight: 700;
  text-align: center;
  width: 100%;
}

.input-field input[type="number"]:focus {
  border-color: var(--accent-cyan);
}

.preview-segment-action {
  margin: 16px 0;
}

/* ==========================================================================
   İsteğe Bağlı: Resim / Logo Ekleme Modülü (Overlay & Intro/Outro)
   ========================================================================== */
.image-module-box {
  background-color: #0d0d0d;
  border: 2px solid var(--surface-border);
  border-radius: 10px;
  padding: 16px;
  margin: 20px 0;
  transition: border-color 0.2s ease;
}

.image-module-box:focus-within {
  border-color: var(--accent-cyan);
}

.toggle-control-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toggle-checkbox {
  width: 24px;
  height: 24px;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
}

.toggle-icon {
  font-size: 1.4rem;
}

.image-module-content {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--surface-border);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.image-upload-area {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.upload-image-btn {
  background-color: #1e1e1e;
  color: var(--text-primary);
  border: 2px dashed #555555;
}

.upload-image-btn:hover {
  background-color: #2a2a2a;
  border-color: var(--accent-cyan);
}

.selected-image-info {
  background-color: #161616;
  border: 1px solid #333333;
  padding: 10px 14px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-text-danger {
  background: transparent;
  border: none;
  color: var(--accent-red);
  font-weight: 700;
  cursor: pointer;
  padding: 4px 8px;
}

.btn-text-danger:hover {
  text-decoration: underline;
}

.module-fieldset {
  border: 1px solid #333333;
  border-radius: 8px;
  padding: 14px;
  background-color: #080808;
}

.module-legend {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-cyan);
  padding: 0 8px;
}

.radio-options-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.position-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: #141414;
  border: 2px solid #282828;
  padding: 10px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.15s ease;
  min-height: 44px;
}

.radio-label:has(input[type="radio"]:checked) {
  border-color: var(--accent-cyan);
  background-color: #092428;
}

.radio-label input[type="radio"] {
  width: 20px;
  height: 20px;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

.duration-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.duration-input-row input[type="number"] {
  width: 90px;
  height: 44px;
  font-size: 1.1rem;
  font-weight: 700;
  background-color: #1a1a1a;
  color: #ffffff;
  border: 2px solid #444444;
  border-radius: 6px;
  text-align: center;
}

.duration-hint {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.image-preview-summary {
  background-color: #121518;
  border-left: 4px solid var(--accent-cyan);
  padding: 12px 14px;
  border-radius: 4px;
  font-size: 0.95rem;
  color: #e0f7fa;
}

.duration-summary {
  background-color: #0d1f12;
  border: 1px solid var(--accent-green);
  padding: 14px;
  border-radius: 8px;
  text-align: center;
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.cut-action-area {
  margin-top: 24px;
}

/* Durum ve İlerleme */
.status-card {
  border-color: var(--accent-yellow);
}

.status-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-message {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.4;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 4px solid #333333;
  border-top-color: var(--accent-yellow);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

.progress-bar-container {
  width: 100%;
  height: 24px;
  background-color: #222222;
  border: 2px solid #444444;
  border-radius: 12px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green));
  transition: width 0.2s ease;
}

.download-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--surface-border);
}

.download-note {
  font-size: 1rem;
  color: #c8e6c9;
}

/* Altbilgi (Footer) */
.app-footer {
  background-color: var(--surface-color);
  border-top: 2px solid var(--surface-border);
  padding: 24px 0;
  margin-top: auto;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-content a {
  color: var(--accent-cyan);
  text-decoration: underline;
}

.footer-privacy-text {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Mobil / Dar Ekran Uyumluluğu */
@media (max-width: 600px) {
  .player-controls-row,
  .marker-actions-row {
    grid-template-columns: 1fr;
  }

  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
}