/* ============================================
   🕷️ Spidify — Clean Dark Neon UI
   Audio effects studio
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors — Pure Dark Base */
  --bg-base: #000000;
  --bg-elevated: #0C0C0E;
  --bg-surface: #141417;
  --bg-surface-2: #1A1A1F;
  --bg-surface-3: #222228;

  /* Brand Colors */
  --accent: #A855F7;
  --accent-dim: rgba(168, 85, 247, 0.15);
  --accent-glow: rgba(168, 85, 247, 0.35);
  --accent-2: #7C3AED;
  --cyan: #22D3EE;
  --cyan-dim: rgba(34, 211, 238, 0.12);
  --cyan-glow: rgba(34, 211, 238, 0.3);
  --pink: #F472B6;
  --pink-dim: rgba(244, 114, 182, 0.12);
  --green: #34D399;
  --green-dim: rgba(52, 211, 153, 0.12);
  --orange: #FB923C;
  --orange-dim: rgba(251, 146, 60, 0.12);
  --red: #F87171;

  /* Text */
  --text-1: #F5F5F7;
  --text-2: #A1A1AA;
  --text-3: #52525B;

  /* Misc */
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition: 200ms ease;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--bg-base);
  color: var(--text-1);
  min-height: 100vh;
  overflow-x: hidden;
}

/* --- Ambient Background Glow --- */
.ambient-glow {
  position: fixed;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(168, 85, 247, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-2 {
  position: fixed;
  bottom: -20%;
  right: -10%;
  width: 600px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(34, 211, 238, 0.05) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* --- Main Layout --- */
.app {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

/* --- Header / Nav --- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo {
  font-size: 1.5rem;
}

.nav-logo-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav-name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: -0.5px;
}

.nav-name span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 0.8rem;
  color: var(--text-2);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: all var(--transition);
  font-weight: 500;
  background: transparent;
  cursor: pointer;
  font-family: var(--font-main);
}

.nav-link:hover {
  color: var(--text-1);
  border-color: var(--border-hover);
  background: var(--bg-surface);
}

/* --- Hero Section --- */
.hero {
  text-align: center;
  margin-bottom: 40px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 12px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--cyan), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1rem;
  color: var(--text-2);
  font-weight: 400;
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

.hero-sub strong {
  color: var(--text-1);
  font-weight: 600;
}

/* --- Upload Zone --- */
.upload-zone {
  border: 1.5px dashed rgba(168, 85, 247, 0.25);
  border-radius: var(--radius-xl);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--bg-elevated);
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
}

.upload-zone:hover {
  border-color: var(--accent);
  background: rgba(168, 85, 247, 0.03);
  box-shadow: 0 0 40px rgba(168, 85, 247, 0.08);
}

.upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(168, 85, 247, 0.06);
  box-shadow: 0 0 60px rgba(168, 85, 247, 0.12);
  transform: scale(1.01);
}

.upload-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
  opacity: 0.9;
}

.upload-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 6px;
}

.upload-sub {
  font-size: 0.85rem;
  color: var(--text-3);
}

.upload-sub .browse {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
  font-weight: 500;
}

.upload-formats {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 16px;
}

.format-tag {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-2);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

#file-input { display: none; }

/* --- YouTube Link Input --- */
.yt-input-container {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
}

.yt-or {
  font-size: 0.8rem;
  color: var(--text-3);
  flex-shrink: 0;
}

.yt-input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-1);
  font-size: 0.85rem;
  font-family: var(--font-main);
  outline: none;
  transition: border-color var(--transition);
}

.yt-input::placeholder {
  color: var(--text-3);
}

.yt-input:focus {
  border-color: var(--accent);
}

.yt-load-btn {
  padding: 10px 18px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-main);
  white-space: nowrap;
}

.yt-load-btn:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
}

/* --- Track Info Bar --- */
.track-info {
  display: none;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.track-info.visible { display: flex; }

.track-art {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-dim), var(--cyan-dim));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.track-details { flex: 1; min-width: 0; }

.track-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-meta {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-top: 1px;
}

.track-remove {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-3);
  border-radius: var(--radius-sm);
  padding: 5px 12px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-main);
}

.track-remove:hover {
  color: var(--red);
  border-color: rgba(248, 113, 113, 0.3);
  background: rgba(248, 113, 113, 0.08);
}

/* --- Visualizer --- */
.visualizer-wrap {
  width: 100%;
  height: 120px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  margin-bottom: 16px;
  position: relative;
}

#waveform-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.viz-mode-toggle {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 0.7rem;
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--transition);
  z-index: 2;
}

.viz-mode-toggle:hover {
  color: var(--text-1);
  border-color: var(--border-hover);
}

/* --- Player Controls --- */
.player-controls {
  display: none;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.player-controls.visible { display: flex; }

.play-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  color: white;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.25);
}

.play-btn:hover {
  background: var(--accent-2);
  transform: scale(1.06);
  box-shadow: 0 6px 28px rgba(168, 85, 247, 0.35);
}

.play-btn:active { transform: scale(0.96); }

.stop-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.stop-btn:hover {
  color: var(--red);
  border-color: rgba(248, 113, 113, 0.3);
}

.seek-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.seek-bar {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 100px;
  background: var(--bg-surface-2);
  outline: none;
  cursor: pointer;
}

.seek-bar::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 8px var(--accent-glow);
  transition: transform 150ms ease;
}

.seek-bar::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

.seek-bar::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}

.time-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

.vol-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.vol-icon {
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
}

.vol-slider {
  width: 70px;
  appearance: none;
  -webkit-appearance: none;
  height: 3px;
  border-radius: 100px;
  background: var(--bg-surface-2);
  outline: none;
  cursor: pointer;
}

.vol-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-2);
  cursor: pointer;
}

.vol-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-2);
  cursor: pointer;
  border: none;
}

/* --- Section Divider --- */
.section-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* --- Presets --- */
.controls-wrap {
  display: none;
}

.controls-wrap.visible { display: block; }

.presets-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 28px;
}

.preset-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-1);
  font-family: var(--font-main);
}

.preset-btn:hover {
  border-color: var(--border-hover);
  background: var(--bg-surface);
  transform: translateY(-2px);
}

.preset-btn.active {
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.1);
}

.preset-btn .p-icon { font-size: 1.4rem; }

.preset-btn .p-name {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.preset-btn .p-desc {
  font-size: 0.6rem;
  color: var(--text-3);
  display: none;
}

/* Preset color hints on active */
.preset-btn[data-preset="nightcore"].active { border-color: var(--pink); background: var(--pink-dim); }
.preset-btn[data-preset="slowed-reverb"].active { border-color: var(--accent); background: var(--accent-dim); }
.preset-btn[data-preset="chipmunk"].active { border-color: var(--orange); background: var(--orange-dim); }
.preset-btn[data-preset="deep-voice"].active { border-color: var(--cyan); background: var(--cyan-dim); }
.preset-btn[data-preset="vaporwave"].active { border-color: var(--pink); background: var(--pink-dim); }
.preset-btn[data-preset="robot"].active { border-color: var(--green); background: var(--green-dim); }
.preset-btn[data-preset="echo-chamber"].active { border-color: var(--cyan); background: var(--cyan-dim); }
.preset-btn[data-preset="bass-boost"].active { border-color: var(--orange); background: var(--orange-dim); }

/* --- Slider Controls --- */
.sliders-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}

.slider-row:hover {
  border-color: var(--border-hover);
}

.slider-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-2);
  width: 100px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.slider-label .s-icon { font-size: 1rem; }

.slider-input {
  flex: 1;
  appearance: none;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 100px;
  background: var(--bg-surface-3);
  outline: none;
  cursor: pointer;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-glow);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 16px var(--accent-glow);
}

.slider-input::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
  box-shadow: 0 0 10px var(--accent-glow);
}

.slider-input.cyan::-webkit-slider-thumb { background: var(--cyan); box-shadow: 0 0 10px var(--cyan-glow); }
.slider-input.cyan::-moz-range-thumb { background: var(--cyan); box-shadow: 0 0 10px var(--cyan-glow); }
.slider-input.pink::-webkit-slider-thumb { background: var(--pink); box-shadow: 0 0 10px rgba(244,114,182,0.3); }
.slider-input.pink::-moz-range-thumb { background: var(--pink); box-shadow: 0 0 10px rgba(244,114,182,0.3); }

.slider-value {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 60px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.slider-value.cyan { color: var(--cyan); }
.slider-value.pink { color: var(--pink); }

.slider-reset {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-3);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 0.65rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-main);
  flex-shrink: 0;
}

.slider-reset:hover {
  color: var(--text-1);
  border-color: var(--border-hover);
}

/* --- Export / Download --- */
.export-wrap {
  display: none;
  text-align: center;
  margin-bottom: 40px;
}

.export-wrap.visible { display: block; }

.export-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: white;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.2);
}

.export-btn:hover {
  background: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(168, 85, 247, 0.3);
}

.export-btn:active { transform: translateY(0); }
.export-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.export-progress {
  display: none;
  margin-top: 16px;
}

.export-progress.visible { display: block; }

.progress-track {
  width: 100%;
  max-width: 360px;
  height: 4px;
  background: var(--bg-surface-2);
  border-radius: 100px;
  margin: 10px auto;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  border-radius: 100px;
  transition: width 300ms ease;
}

.export-status {
  font-size: 0.75rem;
  color: var(--text-3);
}

/* --- Features Section --- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 48px;
  margin-bottom: 32px;
}

.feature-card {
  padding: 24px 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.feature-card .f-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
  display: block;
}

.feature-card .f-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 6px;
}

.feature-card .f-desc {
  font-size: 0.78rem;
  color: var(--text-3);
  line-height: 1.5;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 32px 0 16px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

.footer-text {
  font-size: 0.75rem;
  color: var(--text-3);
}

.footer-brand {
  color: var(--accent);
  font-weight: 600;
}

.footer-sub {
  font-size: 0.65rem;
  color: var(--text-3);
  margin-top: 4px;
  opacity: 0.6;
}

/* --- Search Section --- */
.search-section {
  margin-bottom: 28px;
}

.search-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.divider-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.divider-text {
  font-size: 0.75rem;
  color: var(--text-3);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

.search-box {
  display: flex;
  gap: 8px;
}

.search-input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-1);
  font-size: 0.88rem;
  font-family: var(--font-main);
  outline: none;
  transition: border-color var(--transition);
}

.search-input::placeholder {
  color: var(--text-3);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.search-btn {
  padding: 12px 20px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: white;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-main);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

.search-btn:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
}

.search-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Search Results (Spotify-Style Tracklist) */
.search-results {
  display: none;
  flex-direction: column;
  margin-top: 10px;
  max-height: 400px;
  overflow-y: auto;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  padding: 8px 0;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.search-results.visible {
  display: flex;
}

.tracklist-header {
  display: flex;
  align-items: center;
  padding: 8px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.col-num { width: 30px; text-align: center; }
.col-title { flex: 1; margin-left: 12px; }
.col-duration { width: 60px; text-align: right; margin-left: 12px; }

.search-result {
  display: flex;
  align-items: center;
  padding: 8px 24px;
  cursor: pointer;
  border-radius: 4px;
  margin: 0 8px;
  transition: background-color 0.2s ease;
  background: transparent;
}

.search-result:hover {
  background: rgba(255, 255, 255, 0.1);
}

.track-num-wrapper {
  width: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.track-num { display: block; }
.track-play { display: none; color: var(--text-1); font-size: 0.8rem; }

.search-result:hover .track-num { display: none; }
.search-result:hover .track-play { display: block; }

.result-thumb {
  width: 40px;
  height: 40px;
  border-radius: 4px;
  object-fit: cover;
  margin-left: 12px;
  background: var(--bg-surface-2);
  flex-shrink: 0;
}

.result-info {
  flex: 1;
  min-width: 0;
  margin-left: 14px;
}

.result-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-meta {
  font-size: 0.8rem;
  color: var(--text-2);
  margin-top: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-duration {
  width: 60px;
  text-align: right;
  font-size: 0.85rem;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
  margin-left: 12px;
  flex-shrink: 0;
}

/* Search Loading */
.search-loading {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  color: var(--text-2);
  font-size: 0.85rem;
}

.search-loading.visible {
  display: flex;
}

.spinner-small {
  width: 18px;
  height: 18px;
  border: 2px solid var(--bg-surface-3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 32px 0 16px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

.footer-text {
  font-size: 0.75rem;
  color: var(--text-3);
}

.footer-brand {
  color: var(--accent);
  font-weight: 600;
}

.footer-sub {
  font-size: 0.65rem;
  color: var(--text-3);
  margin-top: 4px;
  opacity: 0.6;
}
}

/* --- Download Progress --- */
.download-progress-container {
  display: none;
  margin-top: 24px;
  background: rgba(20, 20, 20, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 20px 24px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.download-progress-container.visible { display: block; animation: fadeUpIn 0.4s cubic-bezier(0.16, 1, 0.3, 1); }

.download-progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-1);
  margin-bottom: 12px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.download-progress-track {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 100px;
  overflow: hidden;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.5);
  position: relative;
}

.download-progress-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #9052ff, #00e1ff);
  border-radius: 100px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 15px rgba(0, 225, 255, 0.6);
  position: relative;
}

.download-progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 100%);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

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

/* --- Loading Overlay --- */
.loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
}

.loading-overlay.visible { display: flex; }

.spinner {
  width: 40px;
  height: 40px;
  border: 2px solid var(--bg-surface-3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.loading-text {
  font-size: 0.85rem;
  color: var(--text-2);
}

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-1);
  font-size: 0.85rem;
  font-weight: 500;
  z-index: 2000;
  transform: translateY(80px);
  opacity: 0;
  transition: all 250ms ease;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { border-color: rgba(52, 211, 153, 0.3); }
.toast.error { border-color: rgba(248, 113, 113, 0.3); }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--bg-surface-2); border-radius: 100px; }
::-webkit-scrollbar-thumb:hover { background: var(--bg-surface-3); }

/* --- Keyframes --- */
@keyframes spin { to { transform: rotate(360deg); } }

/* --- AI Chat Widget --- */
.chat-widget-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1500;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 16px;
}

.chat-toggle-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--pink));
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.4);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-toggle-btn:hover {
  transform: scale(1.1);
}

.chat-window {
  width: 350px;
  height: 500px;
  max-height: calc(100vh - 120px);
  background: rgba(18, 18, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  transform-origin: bottom right;
  transform: scale(0.9);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.chat-window.open {
  transform: scale(1);
  opacity: 1;
  pointer-events: all;
}

.chat-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.chat-tabs {
  display: flex;
  gap: 12px;
}

.chat-tab {
  background: none;
  border: none;
  color: var(--text-2);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.chat-tab:hover {
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.05);
}

.chat-tab.active {
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.2);
}

.chat-close-btn {
  background: none;
  border: none;
  color: var(--text-2);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  transition: color var(--transition);
}

.chat-close-btn:hover {
  color: var(--text-1);
}

.chat-messages {
  flex: 1;
  padding: 16px 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-message {
  display: flex;
  max-width: 85%;
}

.chat-message.user-message {
  align-self: flex-end;
}

.chat-message.ai-message {
  align-self: flex-start;
}

.chat-message.global-message {
  align-self: flex-start;
}

.chat-message.global-message.self {
  align-self: flex-end;
}

.message-content {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-1);
}

.user-message .message-content {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  border-bottom-right-radius: 4px;
}

.ai-message .message-content, .global-message .message-content {
  background: var(--bg-surface-2);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.global-message.self .message-content {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  border: none;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 4px;
}

.chat-input-area {
  padding: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 12px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

#chat-input {
  flex: 1;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--text-1);
  font-family: var(--font-main);
  font-size: 0.9rem;
  resize: none;
  outline: none;
  transition: border-color var(--transition);
}

#chat-input:focus {
  border-color: var(--accent);
}

#chat-input::placeholder {
  color: var(--text-3);
}

#chat-send-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--accent);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

#chat-send-btn:hover {
  background: var(--accent-2);
  transform: translateY(-2px);
}

#chat-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 14px 18px;
  background: var(--bg-surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  border-bottom-left-radius: 4px;
  align-self: flex-start;
  width: fit-content;
}

.typing-dot {
  width: 6px;
  height: 6px;
  background: var(--text-3);
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* --- Ad Modal --- */
.promo-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.promo-modal-overlay.visible {
  display: flex;
  opacity: 1;
}

.promo-modal-content {
  width: 90%;
  max-width: 600px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
  position: relative;
  transform: translateY(20px) scale(0.95);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.promo-modal-overlay.visible .promo-modal-content {
  transform: translateY(0) scale(1);
}

.promo-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 1px;
  z-index: 2;
}

.promo-video-placeholder {
  height: 300px;
  background: linear-gradient(135deg, var(--bg-base), var(--bg-surface-2));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
  position: relative;
}

.promo-video-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(168, 85, 247, 0.1) 0%, transparent 70%);
}

.promo-sponsor-text {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.promo-headline {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 8px;
  line-height: 1.2;
}

.promo-subtext {
  color: var(--text-2);
  font-size: 1rem;
}

.promo-footer {
  padding: 16px 24px;
  background: var(--bg-surface-2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
}

.promo-timer {
  font-size: 0.9rem;
  color: var(--text-2);
  font-weight: 500;
}

.promo-skip-btn {
  padding: 10px 20px;
  background: var(--bg-surface-3);
  border: 1px solid var(--border);
  color: var(--text-3);
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: not-allowed;
  transition: all var(--transition);
}

.promo-skip-btn:not(:disabled) {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  cursor: pointer;
}

.promo-skip-btn:not(:disabled):hover {
  background: var(--accent-2);
  transform: translateY(-1px);
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .app { padding: 0 16px 60px; }
  .hero-title { font-size: 1.8rem; }
  .presets-row { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: 1fr; }
  .slider-row { flex-wrap: wrap; gap: 10px; }
  .slider-label { width: auto; }
  .slider-input { width: 100%; order: 3; }
  .player-controls { flex-wrap: wrap; }
  .vol-wrap { width: 100%; justify-content: center; }
  .seek-wrap { order: 3; width: 100%; }
  .nav-links { display: none; }
  .upload-zone { padding: 32px 16px; }
  .toast { left: 16px; right: 16px; }
}