/* Modern Video Playlist Player Styles */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --success-color: #10b981;
    --error-color: #ef4444;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-color) 0%, #1a202c 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 3rem;
}

#playlist-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
}

#playlist-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Player Section */
.player-section {
    background: var(--surface-color);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

/* Start Screen */
.start-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
}

.start-button {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 1.5rem 3rem;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.start-button:hover {
    background: linear-gradient(135deg, var(--primary-dark), #1e40af);
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px rgba(37, 99, 235, 0.4);
}

.start-button:active {
    transform: translateY(0);
}

/* Video Player */
.video-container {
    width: 100%;
}

.video-player {
    width: 100%;
    height: 50vh;
    min-height: 400px;
    max-height: 60vh;
    border-radius: 0.5rem;
    background: #000;
    outline: none;
    object-fit: contain;
}

.current-video-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0;
    text-align: center;
    color: var(--text-primary);
    padding: 1rem;
    background: rgba(30, 41, 59, 0.5);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

/* Control Bar */
.control-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(30, 41, 59, 0.7);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.control-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s ease;
    min-width: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

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

.progress-container {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.progress-bar {
    flex: 1;
    height: 0.5rem;
    background: var(--border-color);
    border-radius: 0.25rem;
    overflow: hidden;
    cursor: pointer;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    width: 0%;
    transition: width 0.1s ease;
}

.time-display {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-family: 'Courier New', monospace;
    min-width: 100px;
}

/* Playlist Section */
.playlist-section {
    background: var(--surface-color);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.playlist-section h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.loading i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.playlist-container {
    max-height: 60vh;
    overflow-y: auto;
    overflow-x: hidden;
}

.playlist-item {
    display: flex;
    align-items: flex-start;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    background: rgba(30, 41, 59, 0.3);
}

.playlist-item:hover {
    background: var(--surface-hover);
    border-color: var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.playlist-item.active {
    background: rgba(37, 99, 235, 0.2);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.3);
}

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

.playlist-number {
    font-weight: 700;
    color: var(--text-muted);
    margin-right: 1rem;
    min-width: 2rem;
    font-size: 0.9rem;
}

.playlist-content {
    flex: 1;
}

.playlist-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.playlist-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.playlist-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.playlist-duration {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.playlist-size {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.playlist-link {
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.playlist-link:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Error Message */
.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 1rem;
    border-radius: 0.5rem;
    margin: 1rem 0;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Scrollbar Styling */
.playlist-container::-webkit-scrollbar {
    width: 8px;
}

.playlist-container::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: 4px;
}

.playlist-container::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.playlist-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    #playlist-title {
        font-size: 2rem;
    }
    
    .player-section {
        padding: 1.5rem;
    }
    
    .start-button {
        padding: 1.25rem 2rem;
        font-size: 1rem;
    }
    
    .video-player {
        height: 40vh;
        min-height: 250px;
    }
    
    .control-bar {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .progress-container {
        min-width: 100%;
        order: 3;
    }
    
    .playlist-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .playlist-number {
        margin-bottom: 0.5rem;
    }
    
    .playlist-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Loading Animation */
@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

.playlist-item {
    animation: fadeIn 0.3s ease-out;
}

/* Focus styles for accessibility */
.control-btn:focus,
.start-button:focus,
.playlist-item:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

button:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}