:root {
  --bg: #090d16;
  --card-bg: #111827;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --text: #f9fafb;
  --text-muted: #9ca3af;
  --border: rgba(255, 255, 255, 0.1);
  --radius: 12px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 2rem 1rem;
}

.app-container {
  width: 100%;
  max-width: 960px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.header {
  text-align: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #fff 40%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Input */
.input-container {
  display: flex;
  gap: 0.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 0.4rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: border-color 0.2s;
}

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

#video-url {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 0.6rem 0.8rem;
  font-size: 1rem;
  color: var(--text);
}

#video-url::placeholder {
  color: var(--text-muted);
}

.btn-play {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.2rem;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: background 0.2s;
}

.btn-play:hover {
  background: var(--accent-hover);
}

/* Loader */
.loader {
  display: flex;
  justify-content: center;
  padding: 2rem 0;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Error */
.error-box {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  padding: 0.8rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  text-align: center;
}

/* Player */
.player-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.video-box {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  background: #000;
}

.video-box video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  outline: none;
}

.player-details {
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.title-group {
  flex: 1;
  min-width: 200px;
}

.video-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.video-author {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.controls-group {
  display: flex;
  gap: 0.6rem;
}

.select-dropdown {
  background: #1f2937;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  outline: none;
  font-size: 0.85rem;
}

.select-dropdown:focus {
  border-color: var(--accent);
}

@media (max-width: 600px) {
  .input-container {
    flex-direction: column;
  }
  .btn-play {
    width: 100%;
    justify-content: center;
  }
  .player-details {
    flex-direction: column;
    align-items: flex-start;
  }
}