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

:root {
  color-scheme: dark;
  --bg: #0a0a0c;
  --panel: rgba(26, 26, 29, 0.7);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --text: #f0f0f2;
  --text-soft: #a1a1aa;
  --text-muted: #636366;
  --accent: #4f46e5;
  --accent-soft: #818cf8;
  --glass: blur(12px) saturate(180%);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  line-height: 1.5;
}

/* Background gradient for depth */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 0%, rgba(79, 70, 229, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

#app {
  width: 100%;
  max-width: 920px;
  animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.025em;
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-soft);
}

.lang-switch select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.6rem;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: all 0.2s;
  backdrop-filter: var(--glass);
}

.lang-switch select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.2);
}

.drop-zone {
  width: 100%;
  border: 2px dashed var(--border);
  border-radius: 16px;
  padding: 4rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--panel);
  backdrop-filter: var(--glass);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.drop-zone:hover,
.drop-zone:focus-visible,
.drop-zone.is-dragover {
  border-color: var(--accent);
  background: rgba(79, 70, 229, 0.05);
  transform: scale(1.01);
}

.drop-zone .icon {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.drop-zone .drop-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
}

.drop-zone .sub {
  font-size: 0.875rem;
  color: var(--text-muted);
}

#player-wrap {
  display: none;
  background: var(--panel);
  backdrop-filter: var(--glass);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.25rem;
  box-shadow: var(--shadow-lg);
}

#canvas-wrap {
  position: relative;
  display: none;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 9;
}

video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#overlay-info {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 0.5rem 0.875rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  letter-spacing: 0.05em;
}

#controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.ctrl-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
  height: 6px;
  cursor: pointer;
  border-radius: 3px;
  background: var(--border);
  -webkit-appearance: none;
  appearance: none;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 3px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--text);
  border-radius: 50%;
  margin-top: -5px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.1s;
}

input[type="range"]:hover::-webkit-slider-thumb {
  transform: scale(1.2);
}

.btn {
  background: var(--border);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover {
  background: var(--border-strong);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

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

.btn.accent:hover {
  background: var(--accent-soft);
  box-shadow: 0 0 15px rgba(79, 70, 229, 0.4);
}

.btn i,
.btn span {
  pointer-events: none;
}

#fps-input {
  width: 70px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--panel);
  color: var(--text);
  text-align: center;
}

#fps-input:focus {
  outline: none;
  border-color: var(--accent);
}

.label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#speed-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-soft);
  min-width: 60px;
  text-align: right;
}

#info-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-soft);
  padding: 1rem 0 0.5rem;
  border-top: 1px solid var(--border);
}

#info-bar span {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

#info-bar span::before {
  content: attr(data-label);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#info-bar b {
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
}

#shortcuts {
  margin-top: 2rem;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.shortcut-item kbd {
  background: var(--border-strong);
  color: var(--text);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-family: inherit;
  font-weight: 600;
}

footer {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-credit {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-socials {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text-soft);
  transition: all 0.2s;
  text-decoration: none;
}

.social-link:hover {
  background: var(--border-strong);
  color: var(--accent-soft);
  transform: translateY(-2px);
  border-color: var(--accent);
}

.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;
}

/* Custom styles for new elements */
.vol-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 180px;
}

#vol-slider {
  max-width: 100px;
}

.snapshot-btn {
  margin-left: auto;
}

@media (max-width: 640px) {
  .ctrl-row {
    flex-direction: column;
    align-items: stretch;
  }

  .vol-wrap {
    width: 100%;
  }

  #vol-slider {
    max-width: none;
  }

  .snapshot-btn {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }
}