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

:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #252542;
  --text-primary: #e2e2f0;
  --text-secondary: #a0a0b8;
  --accent: #a855f7;
  --accent-hover: #9333ea;
  --border: rgba(255, 255, 255, 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ===== Header ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  gap: 16px;
}

.logo {
  font-size: 1.2rem;
  font-weight: bold;
  white-space: nowrap;
}

.url-input-group {
  display: flex;
  gap: 8px;
  flex: 1;
  max-width: 600px;
}

.url-input-group select {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  min-width: 100px;
}

.url-input-group input {
  flex: 1;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
}

.url-input-group button {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  font-weight: 500;
}

.url-input-group button:hover {
  background: var(--accent-hover);
}

/* ===== Player Container ===== */
.player-container {
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.iframe-wrapper {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  max-height: 400px;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
}

.iframe-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ===== Canvas Container ===== */
.canvas-container {
  flex: 1;
  position: relative;
  background: #000;
  min-height: 0;
}

.canvas-container canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* ===== Controls ===== */
.controls {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.effect-buttons {
  display: flex;
  gap: 6px;
}

.effect-btn {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

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

.effect-btn:hover:not(.active) {
  background: rgba(255, 255, 255, 0.1);
}

.control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.control-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.control-group input[type="range"] {
  width: 100px;
  accent-color: var(--accent);
}

.value-badge {
  background: var(--bg-tertiary);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  min-width: 36px;
  text-align: center;
}

.theme-selector {
  display: flex;
  gap: 6px;
}

.theme-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  background: var(--color);
  transition: transform 0.2s, border-color 0.2s;
}

.theme-btn.active {
  border-color: white;
  transform: scale(1.2);
}

.theme-btn:hover:not(.active) {
  transform: scale(1.1);
}

#fullscreen-btn {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  margin-left: auto;
}

#fullscreen-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 12px;
  }
  
  .url-input-group {
    max-width: 100%;
  }
  
  .controls {
    justify-content: center;
  }
  
  .effect-buttons {
    order: 1;
    width: 100%;
    justify-content: center;
  }
  
  #fullscreen-btn {
    margin-left: 0;
  }
}