:root {
    --primary: #ff4d4d;
    --primary-dark: #cc0000;
    --bg: #121212;
    --card-bg: #1e1e1e;
    --text: #e0e0e0;
    --text-secondary: #aaaaaa;
    --glass: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--glass);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.8rem;
    font-weight: 600;
}

.logo i {
    color: var(--primary);
}

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

.search-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.search-box input {
    flex: 1;
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid var(--glass);
    border-radius: 8px;
    color: var(--text);
    font-size: 1rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 77, 77, 0.2);
}

.glass-btn {
    padding: 12px 25px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.glass-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 77, 77, 0.3);
}

.glass-btn:active {
    transform: translateY(0);
}

.examples {
    display: flex;
    gap: 10px;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.examples code {
    background: rgba(0, 0, 0, 0.3);
    padding: 3px 8px;
    border-radius: 4px;
    font-family: monospace;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    background: #000;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    margin-bottom: 20px;
}

#player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
}

.placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    z-index: 1;
}

.placeholder i {
    font-size: 5rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.controls {
    display: flex;
    gap: 15px;
    align-items: center;
    background: var(--card-bg);
    padding: 15px 25px;
    border-radius: 12px;
}

.control-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass);
    border: none;
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background: var(--primary);
    transform: scale(1.1);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    max-width: 200px;
}

#volumeSlider {
    flex: 1;
    height: 6px;
    background: var(--glass);
    border-radius: 3px;
    -webkit-appearance: none;
}

#volumeSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
}

.video-info {
    flex: 2;
    text-align: right;
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding-right: 10px;
}

.app-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--glass);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary);
}

@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .examples {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .controls {
        flex-wrap: wrap;
    }
    
    .video-info {
        flex-basis: 100%;
        text-align: center;
        order: -1;
    }
}

.player-embed-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 比例 */
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    background: #000;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    margin-bottom: 20px;
}

#player-iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.5s ease;
}

#player-iframe.active {
    opacity: 1;
}

/* 加载状态指示器 */
.loading-indicator {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
    padding: 20px;
    border-radius: 8px;
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
}

.player-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    z-index: 1;
    pointer-events: none;
}

.player-placeholder i {
    font-size: 5rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.video-info-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.video-info-card h3 {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
}

.info-content {
    line-height: 1.6;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .player-placeholder i {
        font-size: 3rem;
    }
    
    .player-placeholder p {
        font-size: 0.9rem;
    }
    }