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

/* spad_for_vision webapp theme (mvplus/spad_for_vision) */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #0d1b1b;
    --bg-dark: #0a0a0a;
    --bg-card: #1a1a1a;
    --bg-hover: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --accent: #B91D30;
    --accent-hover: #d9243a;
    --accent-link: #00CED1;
    --accent-text: #ffffff;
    --success: #22c55e;
    --border: #333333;
    --gradient-bg: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0d1b1b 100%);
}

body {
    font-family: 'Times New Roman', Georgia, serif;
    background: var(--gradient-bg);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 30px;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--accent);
}

main {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 30px;
    flex: 1;
}

@media (max-width: 900px) {
    main {
        grid-template-columns: 1fr;
    }
}

.player-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.video-container {
    position: relative;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

#videoPlayer {
    width: 100%;
    height: 100%;
    display: block;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.video-overlay.hidden {
    opacity: 0;
}

.controls-bar {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.now-playing {
    display: flex;
    align-items: center;
    gap: 10px;
}

.now-playing .label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.now-playing .title {
    font-weight: 600;
    color: var(--accent);
}

.playback-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.playback-controls button {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 8px;
    background: var(--bg-hover);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.playback-controls button:hover {
    background: var(--accent);
    color: var(--text-primary);
    transform: scale(1.05);
}

.playback-controls button:active {
    transform: scale(0.95);
}

#volumeSlider {
    width: 80px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-hover);
    border-radius: 3px;
    cursor: pointer;
}

#volumeSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

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

.playlist-section {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 180px);
}

.playlist-section h2 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    color: var(--accent);
}

a {
    color: var(--accent-link);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.playlist {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.playlist::-webkit-scrollbar {
    width: 6px;
}

.playlist::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: 3px;
}

.playlist::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.playlist::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.playlist-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-dark);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.playlist-item:hover {
    background: var(--bg-hover);
    border-color: var(--border);
}

.playlist-item.active {
    background: var(--accent);
    border-color: var(--accent-hover);
    color: var(--text-primary);
}

.playlist-item.active .item-title {
    color: var(--text-primary);
}

.playlist-item.active .item-size {
    color: rgba(255, 255, 255, 0.75);
}

.item-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.item-info {
    flex: 1;
    min-width: 0;
}

.item-title {
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-size {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
}

.empty-playlist {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
}

.empty-playlist span {
    font-size: 3rem;
    display: block;
    margin-bottom: 10px;
}

footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}