/* ==========================================================================
   CineAHO Video Extractor – Styles
   Dark glassmorphism with magenta/cyan neon accents
   ========================================================================== */

:root {
  /* Brand Colors – Magenta/Cyan accent palette */
  --brand-magenta: #e040fb;
  --brand-magenta-dark: #ab00d9;
  --brand-cyan: #00e5ff;
  --brand-cyan-dark: #00b8d4;
  --brand-purple: #a855f7;
  --brand-green: #10b981;

  --bg-dark: #060913;
  --panel-bg: rgba(14, 20, 38, 0.55);
  --border-light: rgba(255, 255, 255, 0.05);
  --text-light: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dark: #64748b;

  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-premium: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
}

/* ==================== BASE RESET ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans KR', 'Inter', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Grid overlay */
body::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -2;
  pointer-events: none;
}

/* ==================== BACKGROUND GLOW ==================== */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(180px);
  opacity: 0.18;
  pointer-events: none;
  z-index: -3;
}
.bg-glow-magenta {
  width: 700px; height: 700px;
  background: radial-gradient(circle, var(--brand-magenta) 0%, transparent 70%);
  top: -250px; left: 5%;
  animation: floatGlow 18s ease-in-out infinite alternate;
}
.bg-glow-cyan {
  width: 550px; height: 550px;
  background: radial-gradient(circle, var(--brand-cyan) 0%, transparent 70%);
  top: 50%; right: -5%;
  animation: floatGlow 22s ease-in-out infinite alternate-reverse;
}
.bg-glow-purple {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--brand-purple) 0%, transparent 70%);
  bottom: 5%; left: 30%;
  animation: floatGlow 25s ease-in-out infinite alternate;
}

@keyframes floatGlow {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.08); }
  100% { transform: translate(-15px, 15px) scale(0.95); }
}

/* ==================== GLASS PANELS ==================== */
.glass-panel {
  background: var(--panel-bg);
  border: 1px solid var(--border-light);
  border-radius: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
}
.glass-panel:hover {
  border-color: rgba(224, 64, 251, 0.15);
  box-shadow: var(--shadow-premium), 0 0 30px rgba(224, 64, 251, 0.04);
}

/* ==================== HEADER ==================== */
.main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  margin: 1rem 1.5rem 0 1.5rem;
  border-radius: 50px;
  border: 1px solid rgba(255,255,255,0.05);
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.back-btn {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  color: #94a3b8;
  text-decoration: none;
  transition: all 0.3s ease;
}
.back-btn:hover {
  background: rgba(255,255,255,0.1);
  color: #f1f5f9;
  border-color: #94a3b8;
}

.app-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.app-logo i.logo-icon {
  font-size: 1.15rem;
}
.app-logo i.logo-icon.text-magenta { color: var(--brand-magenta); }

.logo-text {
  font-family: inherit;
  font-weight: 800;
  font-size: 1.15rem;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: #f1f5f9;
  margin: 0; padding: 0; border: none;
}
.engine-sub {
  font-size: 0.7rem;
  color: #94a3b8;
  font-weight: 400;
}
.btn-back-dashboard {
  background: rgba(224, 64, 251, 0.1);
  border: 1px solid rgba(224, 64, 251, 0.2);
  color: #f1f5f9;
  font-weight: 600;
  font-size: 0.82rem;
  padding: 0.5rem 1.25rem;
  border-radius: 30px;
  cursor: pointer;
  display: flex; align-items: center; gap: 0.4rem;
  transition: all 0.3s ease;
}
.btn-back-dashboard:hover {
  background: var(--brand-magenta);
  box-shadow: 0 4px 12px rgba(224, 64, 251, 0.3);
}

/* ==================== FOOTER ==================== */
.main-footer {
  text-align: center;
  padding: 4rem 2rem;
  border-top: 1px solid var(--border-light);
  margin-top: 5rem;
  background: rgba(14, 20, 38, 0.4);
}
.main-footer p { font-size: 0.85rem; color: var(--text-muted); }
.footer-note { margin-top: 0.5rem; font-size: 0.78rem !important; }

/* ==================== MAIN CONTAINER ==================== */
.app-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 6rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Back Link */
.sub-nav-back { display: flex; }
.back-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem; font-weight: 500;
  display: inline-flex; align-items: center; gap: 0.5rem;
  transition: var(--transition-smooth);
}
.back-link:hover {
  color: var(--brand-magenta);
  transform: translateX(-3px);
}

/* Banner */
.app-banner {
  padding: 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(14, 20, 38, 0.85) 0%, rgba(30, 41, 59, 0.4) 100%);
}
.app-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 4px; height: 100%;
  background: linear-gradient(to bottom, var(--brand-magenta), var(--brand-cyan));
}
.badge-capsule {
  display: inline-block;
  background: rgba(224, 64, 251, 0.1);
  border: 1px solid rgba(224, 64, 251, 0.2);
  color: var(--brand-magenta);
  font-size: 0.75rem; font-weight: 700;
  padding: 0.3rem 0.85rem;
  border-radius: 50px;
  margin-bottom: 0.8rem;
  letter-spacing: 0.5px;
}
.app-banner h2 {
  font-size: 2rem; font-weight: 800;
  color: #fff; letter-spacing: -0.5px;
}
.app-banner p {
  font-size: 0.95rem; color: var(--text-muted); margin-top: 0.35rem;
}
.banner-decor {
  font-size: 4rem; color: rgba(255,255,255,0.03);
}

/* ==================== SOURCE SECTION ==================== */
.source-section {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Tabs */
.source-tabs {
  display: flex;
  gap: 0;
  border-radius: 16px 16px 0 0;
  overflow: hidden;
  border: 1px solid var(--border-light);
  border-bottom: none;
  background: rgba(14, 20, 38, 0.6);
}
.source-tab {
  flex: 1;
  padding: 1rem 1.5rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.9rem; font-weight: 600;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 0.6rem;
  transition: var(--transition-smooth);
  position: relative;
}
.source-tab::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 3px;
  background: transparent;
  transition: background 0.3s ease;
}
.source-tab:hover {
  color: var(--text-light);
  background: rgba(255,255,255,0.02);
}
.source-tab.active {
  color: #fff;
  background: rgba(224, 64, 251, 0.06);
}
.source-tab.active::after {
  background: linear-gradient(90deg, var(--brand-magenta), var(--brand-cyan));
}
.source-tab i { font-size: 1.1rem; }

/* Source Panels */
.source-panel {
  display: none;
}
.source-panel.active {
  display: block;
}

/* Upload Zone */
.upload-zone {
  padding: 3rem 2rem;
  border: 2px dashed rgba(255,255,255,0.08);
  border-radius: 0 0 24px 24px;
  text-align: center;
  cursor: pointer;
  background: rgba(14, 20, 38, 0.3);
  transition: var(--transition-smooth);
}
.upload-zone.dragover {
  border-color: var(--brand-magenta);
  background: rgba(224, 64, 251, 0.05);
  box-shadow: 0 0 30px rgba(224, 64, 251, 0.1);
}
.upload-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.upload-icon-wrap {
  position: relative;
  width: 80px; height: 80px;
  display: flex; align-items: center; justify-content: center;
}
.upload-icon {
  font-size: 2.5rem;
  color: var(--brand-magenta);
  transition: transform 0.3s;
  z-index: 1;
}
.upload-icon-ring {
  position: absolute;
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 2px solid rgba(224, 64, 251, 0.15);
  animation: ringPulse 2.5s ease-in-out infinite;
}
@keyframes ringPulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.15); opacity: 0.15; }
}
.upload-zone:hover .upload-icon {
  transform: translateY(-4px);
}
.upload-text {
  font-size: 0.95rem; font-weight: 600; color: var(--text-light);
}
.browse-link {
  color: var(--brand-magenta);
  text-decoration: underline;
  cursor: pointer;
}
.upload-subtext {
  font-size: 0.75rem; color: var(--text-muted);
}

/* YouTube Input */
.youtube-input-box {
  padding: 1.5rem;
  border-radius: 0 0 24px 24px;
}
.youtube-input-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.youtube-icon-wrap {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(255, 0, 0, 0.1);
  border: 1px solid rgba(255, 0, 0, 0.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.youtube-icon-wrap i {
  font-size: 1.2rem; color: #f44336;
}
#input-youtube-url {
  flex: 1;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  color: #fff;
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition-smooth);
  font-family: 'Fira Code', 'Courier New', monospace;
}
#input-youtube-url:focus {
  border-color: var(--brand-magenta);
  box-shadow: 0 0 15px rgba(224, 64, 251, 0.1);
}
#input-youtube-url::placeholder {
  color: #4b5563;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.82rem;
}
.btn-load-youtube {
  background: linear-gradient(135deg, var(--brand-magenta), var(--brand-cyan));
  border: none;
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  cursor: pointer;
  display: flex; align-items: center; gap: 0.5rem;
  transition: var(--transition-smooth);
  white-space: nowrap;
  flex-shrink: 0;
}
.btn-load-youtube:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(224, 64, 251, 0.3);
}

/* YouTube Info Bar */
.youtube-info-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.25rem;
  padding: 1rem;
  background: rgba(0,0,0,0.2);
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.03);
  animation: fadeSlideUp 0.4s ease;
}
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.youtube-thumb {
  width: 120px; height: 68px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.05);
}
.youtube-meta {
  display: flex; flex-direction: column; gap: 0.35rem;
}
.youtube-title {
  font-size: 0.88rem; font-weight: 700; color: #fff;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.youtube-duration {
  font-size: 0.78rem; color: var(--brand-cyan);
  font-weight: 600;
}

/* ==================== VIDEO PREVIEW & PLAYER ==================== */
.preview-section {
  padding: 0;
  overflow: hidden;
}

.video-player-wrap {
  position: relative;
  background: #000;
  border-radius: 24px 24px 0 0;
  overflow: hidden;
}
#video-player {
  width: 100%;
  display: block;
  max-height: 500px;
  object-fit: contain;
  background: #000;
}

/* YouTube IFrame Player Container */
.youtube-player-wrap {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  background: #000;
}
.youtube-player-wrap iframe,
.youtube-player-wrap > div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.video-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: calc(100% - 46px);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: 5;
}
.video-overlay.hidden { display: none; }
.btn-play-overlay {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: rgba(224, 64, 251, 0.3);
  border: 2px solid rgba(224, 64, 251, 0.5);
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  padding-left: 4px;
}
.btn-play-overlay:hover {
  background: rgba(224, 64, 251, 0.5);
  transform: scale(1.08);
  box-shadow: 0 0 30px rgba(224, 64, 251, 0.3);
}

/* Video Controls Bar */
.video-controls-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: rgba(0,0,0,0.6);
}
.vc-btn {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.vc-btn:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}
.vc-time {
  font-family: 'Fira Code', monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}
.vc-separator {
  color: var(--text-dark);
  font-size: 0.75rem;
}
.vc-spacer { flex: 1; }

/* Screenshot Button */
.vc-screenshot-btn {
  width: auto;
  padding: 0 0.75rem;
  gap: 0.35rem;
  color: var(--brand-cyan);
  border-color: rgba(0, 229, 255, 0.15);
  background: rgba(0, 229, 255, 0.05);
}
.vc-screenshot-btn:hover {
  background: rgba(0, 229, 255, 0.15);
  border-color: rgba(0, 229, 255, 0.3);
  color: #fff;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
}
.vc-screenshot-btn.flash {
  animation: screenshotFlash 0.6s ease;
}
@keyframes screenshotFlash {
  0% { background: rgba(0, 229, 255, 0.4); box-shadow: 0 0 20px rgba(0, 229, 255, 0.4); }
  100% { background: rgba(0, 229, 255, 0.05); box-shadow: none; }
}
.vc-ss-label {
  font-size: 0.68rem;
  font-weight: 600;
  white-space: nowrap;
}

/* Range Play Button */
.vc-range-play {
  width: auto;
  padding: 0 0.75rem;
  gap: 0.35rem;
  color: var(--brand-magenta);
  border-color: rgba(224, 64, 251, 0.15);
  background: rgba(224, 64, 251, 0.05);
}
.vc-range-play:hover {
  background: rgba(224, 64, 251, 0.15);
  border-color: rgba(224, 64, 251, 0.3);
  color: #fff;
  box-shadow: 0 0 12px rgba(224, 64, 251, 0.15);
}
.vc-range-play.active {
  background: rgba(224, 64, 251, 0.2);
  border-color: var(--brand-magenta);
  color: #fff;
  box-shadow: 0 0 15px rgba(224, 64, 251, 0.3);
  animation: rangePlayPulse 1.5s ease-in-out infinite;
}
@keyframes rangePlayPulse {
  0%, 100% { box-shadow: 0 0 15px rgba(224, 64, 251, 0.3); }
  50% { box-shadow: 0 0 25px rgba(224, 64, 251, 0.5); }
}
.vc-range-label {
  font-size: 0.68rem;
  font-weight: 600;
  white-space: nowrap;
}

/* ==================== TIMELINE SLIDER ==================== */
.timeline-section {
  padding: 1.5rem;
  background: rgba(0,0,0,0.15);
  border-top: 1px solid rgba(255,255,255,0.03);
}
.timeline-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tl-label {
  font-size: 0.82rem; font-weight: 700; color: var(--text-light);
  display: flex; align-items: center; gap: 0.5rem;
}
.tl-label i { color: var(--brand-magenta); }
.tl-range-info {
  display: flex; gap: 0.5rem; flex-wrap: wrap;
}
.tl-time-badge {
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 0.3rem 0.7rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.72rem; font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.tl-duration-badge {
  color: var(--brand-cyan);
  border-color: rgba(0, 229, 255, 0.15);
}
.tl-time-input {
  background: transparent;
  border: none;
  color: #fff;
  font-family: 'Fira Code', monospace;
  font-size: 0.72rem;
  font-weight: 700;
  width: 50px;
  outline: none;
  text-align: center;
  padding: 0;
  margin: 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
  transition: border-color 0.2s, color 0.2s;
}
.tl-time-input::-webkit-inner-spin-button,
.tl-time-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.tl-time-input[type=number] {
  -moz-appearance: textfield;
}
.tl-time-input:focus {
  border-bottom-color: var(--brand-magenta);
  color: var(--brand-magenta);
}
.tl-time-formatted {
  font-size: 0.65rem;
  color: var(--text-dark);
  font-weight: 500;
}

/* Slider Track */
.timeline-slider-wrap {
  padding: 12px 8px;
  user-select: none;
}
.timeline-track {
  position: relative;
  width: 100%;
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  cursor: pointer;
}
.timeline-range {
  position: absolute;
  height: 100%;
  background: linear-gradient(90deg, var(--brand-magenta), var(--brand-cyan));
  border-radius: 4px;
  top: 0;
  pointer-events: none;
  opacity: 0.6;
}
.timeline-handle {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 20px; height: 32px;
  background: rgba(14, 20, 38, 0.95);
  border: 2px solid var(--brand-magenta);
  border-radius: 6px;
  cursor: ew-resize;
  z-index: 10;
  display: flex; align-items: center; justify-content: center;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.timeline-handle:hover,
.timeline-handle.dragging {
  border-color: var(--brand-cyan);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.35);
}
.handle-line {
  width: 2px; height: 14px;
  background: rgba(255,255,255,0.3);
  border-radius: 1px;
}
.handle-start { left: 0%; }
.handle-end { left: 100%; }

.timeline-playhead {
  position: absolute;
  top: -4px;
  width: 3px; height: 16px;
  background: #fff;
  border-radius: 2px;
  pointer-events: none;
  z-index: 5;
  opacity: 0.7;
  transition: left 0.1s linear;
}

/* ==================== OPTIONS SECTION ==================== */
.options-section {
  animation: fadeSlideUp 0.4s ease;
}
.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.option-card {
  padding: 1.5rem;
  border-radius: 20px;
}
.option-header {
  display: flex; align-items: center; gap: 0.6rem;
  margin-bottom: 1.25rem;
}
.opt-icon {
  font-size: 1rem;
  color: var(--brand-magenta);
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(224, 64, 251, 0.08);
  border: 1px solid rgba(224, 64, 251, 0.15);
  border-radius: 10px;
  flex-shrink: 0;
}
.opt-title {
  font-size: 0.88rem; font-weight: 700; color: #fff;
}

/* Format Toggle */
.format-toggle {
  display: flex; gap: 0.75rem;
}
.fmt-btn {
  flex: 1;
  padding: 1rem;
  border-radius: 14px;
  border: 1px solid var(--border-light);
  background: rgba(0,0,0,0.2);
  cursor: pointer;
  display: flex; flex-direction: column;
  align-items: center; gap: 0.25rem;
  transition: var(--transition-smooth);
}
.fmt-btn:hover {
  border-color: rgba(224, 64, 251, 0.2);
  background: rgba(224, 64, 251, 0.04);
}
.fmt-btn.active {
  border-color: var(--brand-magenta);
  background: rgba(224, 64, 251, 0.08);
  box-shadow: 0 0 15px rgba(224, 64, 251, 0.1);
}
.fmt-label {
  font-size: 1.1rem; font-weight: 800; color: #fff;
}
.fmt-desc {
  font-size: 0.7rem; color: var(--text-muted); font-weight: 500;
}
.fmt-btn.active .fmt-label { color: var(--brand-magenta); }
.fmt-btn.active .fmt-desc { color: var(--brand-cyan); }

/* Scale Buttons */
.scale-buttons {
  display: flex; gap: 0.5rem;
}
.scale-btn {
  flex: 1;
  padding: 0.7rem 0.5rem;
  border-radius: 10px;
  border: 1px solid var(--border-light);
  background: rgba(0,0,0,0.2);
  color: var(--text-muted);
  font-size: 0.82rem; font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
}
.scale-btn:hover {
  border-color: rgba(224, 64, 251, 0.2);
  color: #fff;
}
.scale-btn.active {
  border-color: var(--brand-magenta);
  background: rgba(224, 64, 251, 0.08);
  color: var(--brand-magenta);
  box-shadow: 0 0 10px rgba(224, 64, 251, 0.1);
}

/* FPS / Quality Sliders */
.fps-slider-wrap, .quality-slider-wrap {
  display: flex; align-items: center; gap: 1rem;
}
.styled-range {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}
.styled-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-magenta), var(--brand-cyan));
  border: 2px solid rgba(255,255,255,0.2);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(224, 64, 251, 0.3);
  transition: transform 0.2s;
}
.styled-range::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}
.styled-range::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-magenta), var(--brand-cyan));
  border: 2px solid rgba(255,255,255,0.2);
  cursor: pointer;
}
.range-value-display {
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 0.4rem 0.85rem;
  min-width: 72px;
  text-align: center;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--brand-cyan);
  white-space: nowrap;
}
.range-unit {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 2px;
}

/* FPS Presets */
.fps-presets {
  display: flex; gap: 0.4rem; margin-top: 0.75rem;
}
.fps-btn {
  flex: 1;
  padding: 0.45rem 0.25rem;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  background: rgba(0,0,0,0.15);
  color: var(--text-muted);
  font-size: 0.75rem; font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}
.fps-btn:hover { border-color: rgba(224, 64, 251, 0.2); color: #fff; }
.fps-btn.active {
  border-color: var(--brand-cyan);
  color: var(--brand-cyan);
  background: rgba(0, 229, 255, 0.06);
}

/* Quality hint */
.quality-hint {
  display: flex; justify-content: space-between;
  margin-top: 0.5rem;
}
.quality-hint span {
  font-size: 0.68rem; color: var(--text-dark); font-weight: 500;
}

/* ==================== ACTION BUTTON ==================== */
.action-section {
  display: flex; flex-direction: column; align-items: center; gap: 1.5rem;
  animation: fadeSlideUp 0.4s ease;
}
.btn-extract {
  width: 100%; max-width: 480px;
  padding: 1.15rem 2rem;
  border-radius: 16px;
  border: none;
  background: linear-gradient(135deg, var(--brand-magenta), var(--brand-magenta-dark), var(--brand-cyan));
  background-size: 200% 200%;
  color: #fff;
  font-size: 1.05rem; font-weight: 800;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 0.75rem;
  transition: var(--transition-smooth);
  animation: gradientShift 4s ease infinite;
  box-shadow: 0 8px 25px rgba(224, 64, 251, 0.25);
  letter-spacing: 0.3px;
}
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.btn-extract:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(224, 64, 251, 0.4);
}
.btn-extract:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Progress Bar */
.progress-wrap {
  width: 100%; max-width: 480px;
  display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
  animation: fadeSlideUp 0.3s ease;
}
.progress-bar-outer {
  width: 100%;
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  overflow: hidden;
}
.progress-bar-inner {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--brand-magenta), var(--brand-cyan));
  border-radius: 4px;
  transition: width 0.3s ease;
  animation: progressPulse 1.5s ease-in-out infinite;
}
@keyframes progressPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.progress-label {
  font-size: 0.82rem; font-weight: 600; color: var(--text-muted);
}

/* ==================== RESULT SECTION ==================== */
.result-section {
  padding: 2rem;
  animation: fadeSlideUp 0.5s ease;
}
.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.result-title-row {
  display: flex; align-items: center; gap: 0.6rem;
}
.result-check {
  font-size: 1.5rem; color: var(--brand-green);
}
.result-header h3 {
  font-size: 1.3rem; font-weight: 800; color: #fff;
}
.result-meta {
  display: flex; gap: 1.5rem;
}
.meta-item {
  display: flex; flex-direction: column; align-items: center;
}
.meta-label {
  font-size: 0.68rem; font-weight: 600;
  color: var(--text-dark); text-transform: uppercase;
  letter-spacing: 0.5px;
}
.meta-value {
  font-size: 1rem; font-weight: 800; color: #fff;
  font-family: 'Outfit', sans-serif;
}
.meta-highlight {
  color: var(--brand-cyan) !important;
  font-size: 1.15rem !important;
}

/* Result Preview */
.result-preview-wrap {
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 16px;
  overflow: hidden;
  display: flex; justify-content: center;
  padding: 1rem;
  min-height: 120px;
}
.result-preview-img {
  max-width: 100%;
  max-height: 400px;
  object-fit: contain;
  border-radius: 8px;
}

/* Result Actions */
.result-actions {
  display: flex; gap: 1rem; margin-top: 1.5rem;
  justify-content: center;
}
.btn-download {
  padding: 0.85rem 2rem;
  border-radius: 14px;
  border: none;
  background: linear-gradient(135deg, var(--brand-green), #059669);
  color: #fff;
  font-weight: 800; font-size: 0.95rem;
  cursor: pointer;
  display: flex; align-items: center; gap: 0.6rem;
  transition: var(--transition-smooth);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.25);
}
.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(16, 185, 129, 0.35);
}
.btn-retry {
  padding: 0.85rem 1.5rem;
  border-radius: 14px;
  border: 1px solid var(--border-light);
  background: rgba(255,255,255,0.03);
  color: var(--text-muted);
  font-weight: 700; font-size: 0.88rem;
  cursor: pointer;
  display: flex; align-items: center; gap: 0.5rem;
  transition: var(--transition-smooth);
}
.btn-retry:hover {
  border-color: var(--brand-magenta);
  color: #fff;
  background: rgba(224, 64, 251, 0.06);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .options-grid {
    grid-template-columns: 1fr;
  }
  .main-header {
    margin: 0.5rem;
    padding: 0.5rem 1rem;
  }
  .logo-text {
    font-size: 0.95rem;
  }
  .engine-sub { display: none; }
  .app-banner h2 { font-size: 1.4rem; }
  .youtube-input-row {
    flex-direction: column;
  }
  .youtube-icon-wrap { display: none; }
  .result-meta { gap: 1rem; }
  .result-actions {
    flex-direction: column;
  }
  .btn-download, .btn-retry {
    width: 100%; justify-content: center;
  }
  .timeline-labels {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .app-container { padding: 1rem 0.75rem 4rem 0.75rem; }
  .source-tab span { display: none; }
  .source-tab { padding: 0.85rem 1rem; }
  .scale-buttons { flex-wrap: wrap; }
  .scale-btn { min-width: calc(50% - 0.25rem); }
}