/* ─── Design Tokens ─── */
:root {
  --bg-primary: #06070a;
  --bg-secondary: #0b0d13;
  --bg-elevated: #10121a;
  --bg-glass: rgba(255, 255, 255, 0.028);
  --bg-glass-hover: rgba(255, 255, 255, 0.055);
  --bg-glass-active: rgba(59, 130, 246, 0.1);

  --accent-blue: #2f6bff;
  --accent-blue-bright: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #2f6bff 0%, #3b82f6 55%, #06b6d4 100%);
  --accent-glow: rgba(59, 130, 246, 0.4);
  --accent-glow-soft: rgba(59, 130, 246, 0.12);

  --text-primary: #f4f6fa;
  --text-secondary: #98a2b3;
  --text-muted: #626b7a;
  --text-inverse: #06070a;

  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(59, 130, 246, 0.32);

  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 34px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 56px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 32px var(--accent-glow-soft);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 26px;
  --radius-full: 9999px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-display: "Space Grotesk", system-ui, sans-serif;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  font-size: 16px;
}

/* ─── Reset & Base ─── */
* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.03) 1px, transparent 0);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.bg-orb-top {
  width: 640px;
  height: 640px;
  top: -260px;
  right: -180px;
  background: radial-gradient(circle, rgba(59,130,246,0.16) 0%, transparent 70%);
}

.bg-orb-bottom {
  width: 520px;
  height: 520px;
  bottom: -220px;
  left: -180px;
  background: radial-gradient(circle, rgba(6,182,212,0.09) 0%, transparent 70%);
}

a { color: inherit; }

/* ─── Header ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 7, 10, 0.72);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  max-width: 860px;
  margin: 0 auto;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-lg);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  white-space: nowrap;
}

/* ─── App Layout ─── */
.app {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-2xl);
}

/* ─── Hero ─── */
.hero {
  text-align: center;
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.4rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 1.02rem;
  max-width: 480px;
  margin: 0 auto;
}

/* ─── Fetch Panel ─── */
.fetch-panel {
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-md);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.04);
  animation: fadeInUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.08s both;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  margin-bottom: var(--space-lg);
}

.fetch-panel:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-md), var(--shadow-glow), inset 0 1px 0 rgba(255,255,255,0.04);
}

.input-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.input-icon {
  display: none;
  flex-shrink: 0;
  color: var(--text-muted);
  padding-left: var(--space-sm);
}

#url-input {
  flex: 1;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 15px 18px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: all var(--transition-base);
  outline: none;
  min-width: 0;
}

#url-input::placeholder {
  color: var(--text-muted);
  font-size: 0.95rem;
}

#url-input:focus {
  border-color: var(--accent-blue-bright);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15), 0 0 24px rgba(59, 130, 246, 0.1);
  background: rgba(0, 0, 0, 0.45);
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius-md);
  padding: 0 30px;
  height: 52px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-body);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  transition: left 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(59, 130, 246, 0.4), var(--shadow-glow);
}

.btn-primary:hover::before { left: 100%; }

.btn-primary:active { transform: translateY(0) scale(0.97); }

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-primary:disabled::before { display: none; }

/* ─── Status Panel ─── */
.status-panel {
  margin-bottom: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  color: var(--text-secondary);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  animation: fadeInUp 0.4s ease-out;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.status-panel::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.status-panel:not(.is-error)::before { opacity: 1; }

.status-panel.is-error {
  border-color: rgba(239, 68, 68, 0.25);
  background: rgba(239, 68, 68, 0.05);
  color: #fca5a5;
}

.status-panel.is-error::before {
  background: linear-gradient(180deg, #ef4444, #f87171);
  opacity: 1;
}

.status-panel.is-loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-subtle);
  border-top-color: var(--accent-blue-bright);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

/* ─── Result / Media Player Card ─── */
.result-panel {
  animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
  margin-bottom: var(--space-lg);
}

.player-card {
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.04);
  transition: border-color var(--transition-base);
}

.player-card:hover { border-color: var(--border-accent); }

.player-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-secondary);
  overflow: hidden;
}

#result-thumb,
#result-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
  background: var(--bg-secondary);
}

#result-video[hidden] { display: none; }

.player-card:hover #result-thumb { transform: scale(1.03); }

.player-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.35) 100%);
  pointer-events: none;
}

.play-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 68px;
  height: 68px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(15, 18, 26, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
  transition: all var(--transition-base);
  z-index: 1;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}

.play-badge svg { margin-left: 3px; }

.player-card:hover .play-badge,
.play-badge:hover {
  background: var(--accent-gradient);
  border-color: transparent;
  transform: translate(-50%, -50%) scale(1.08);
  box-shadow: 0 0 40px var(--accent-glow);
}

.play-badge:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: translate(-50%, -50%);
}

.play-badge[hidden] { display: none; }

.player-body { padding: var(--space-lg) var(--space-xl) var(--space-xl); }

#result-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: 6px;
}

#result-source {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-lg);
}

#result-source:empty { display: none; }

#result-source::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-gradient);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Hide the audio-track section entirely — MP3 conversion is exposed as a
   single action button on the video row, per the media-player layout. */
#audio-group { display: none !important; }

.track-group { margin: 0; }

.track-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.track-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.track-meta {
  display: none;
}

.track-actions {
  display: flex;
  gap: var(--space-md);
  flex: 1;
  min-width: 260px;
}

.track-actions a,
.track-actions button {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  padding: 15px 20px;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* "Download" -> "🎬 Download Video" */
.track-actions a {
  border: none;
  background: var(--accent-gradient);
  color: var(--text-inverse);
  box-shadow: 0 6px 20px rgba(47, 107, 255, 0.35);
}

.track-actions a::before { content: '🎬 '; }
.track-actions a::after { content: ' Video'; }

.track-actions a:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(47, 107, 255, 0.45), var(--shadow-glow);
}

.track-actions a:active { transform: translateY(0) scale(0.98); }

/* "Convert to MP3" -> "🎵 Convert to MP3" */
.track-actions button {
  border: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  color: var(--text-primary);
}

.track-actions button::before { content: '🎵 '; }

.track-actions button:hover:not(:disabled) {
  border-color: var(--border-accent);
  background: var(--bg-glass-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm), var(--shadow-glow);
}

.track-actions button:active:not(:disabled) { transform: translateY(0) scale(0.98); }

.track-actions button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.track-actions button.is-audio-convert::before { content: '🎵 '; }

/* ─── Footer / Supported Platforms ─── */
.app-footer {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
  animation: fadeIn 1s ease-out both;
}

.footer-heading {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-lg) var(--space-sm);
  max-width: 620px;
  margin: 0 auto;
}

.platform-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.platform-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.platform-item:hover .platform-icon {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.platform-name {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.icon-youtube { background: #ff0000; }
.icon-tiktok { background: #0a0a0c; border-color: rgba(255,255,255,0.12); }
.icon-instagram { background: linear-gradient(135deg, #f9ce34, #ee2a7b 55%, #6228d7); }
.icon-facebook { background: #1877f2; }
.icon-x { background: #0a0a0c; border-color: rgba(255,255,255,0.12); }
.icon-pinterest { background: #e60023; }
.icon-spotify { background: #1db954; }
.icon-soundcloud { background: #ff5500; }
.icon-threads { background: #0a0a0c; border-color: rgba(255,255,255,0.12); }
.icon-more { background: var(--bg-glass); color: var(--text-secondary); }

.footer-note {
  text-align: center;
  margin-top: var(--space-xl);
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* ─── Animations ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

/* ─── Responsive ─── */
@media (max-width: 680px) {
  .app { padding: var(--space-xl) var(--space-md); }

  .header-inner { padding: 0 var(--space-md); }

  .hero-title { font-size: 1.9rem; }

  .hero-subtitle { font-size: 0.95rem; }

  .input-row { flex-wrap: wrap; }

  #url-input {
    flex-basis: 100%;
    width: 100%;
  }

  .btn-primary { flex: 1; }

  .player-body { padding: var(--space-lg); }

  .track-actions { flex-direction: column; min-width: 0; }

  .platform-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 420px) {
  .platform-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}