/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Variables */
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #343a40;
    --bg-darker: #212529;
    
    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-light: #ffffff;
    --text-muted: #868e96;
    
    /* Border Colors */
    --border-color: #dee2e6;
    --border-light: #e9ecef;
    
    /* Shadow */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-sm: 0.875rem;
    --font-size-xs: 0.75rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-pill: 50rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --bg-dark: #3a3a3a;
        --bg-darker: #4a4a4a;
        --text-primary: #ffffff;
        --text-secondary: #b3b3b3;
        --border-color: #404040;
        --border-light: #505050;
    }
}

/* Base Typography */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Utilities */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo i {
    font-size: 1.75rem;
}

/* Connection Status */
.connection-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-pill);
    border: 1px solid var(--border-color);
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--secondary-color);
    animation: pulse 2s infinite;
}

.status-indicator.connected {
    background: var(--success-color);
}

.status-indicator.connecting {
    background: var(--warning-color);
}

.status-indicator.error {
    background: var(--danger-color);
}

.status-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* Main Content */
.main {
    padding: var(--spacing-xl) 0;
}

/* Video Container */
.video-container {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-xl);
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    background: #000;
}

.video-player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-light);
    z-index: 10;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

.loading-text {
    font-size: var(--font-size-lg);
    font-weight: 500;
}

/* Error Overlay */
.error-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(220, 53, 69, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-light);
    z-index: 20;
}

.error-content {
    text-align: center;
    padding: var(--spacing-xl);
}

.error-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.error-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.error-message {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

/* Video Controls Overlay */
.video-controls-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--spacing-md);
    opacity: 0;
    transition: var(--transition);
    z-index: 5;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.3) 0%,
        transparent 30%,
        transparent 70%,
        rgba(0, 0, 0, 0.3) 100%
    );
}

.video-wrapper:hover .video-controls-overlay {
    opacity: 1;
}

.controls-top {
    display: flex;
    justify-content: flex-end;
}

.controls-center {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
}

.controls-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.control-btn {
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: var(--text-light);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
}

.control-btn:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: scale(1.05);
}

.control-btn-large {
    padding: var(--spacing-lg);
    font-size: 2rem;
    border-radius: 50%;
}

.volume-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.volume-slider {
    width: 100px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius);
    outline: none;
    -webkit-appearance: none;
}

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

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.time-display {
    background: var(--danger-color);
    color: var(--text-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 1px;
}

/* Info Panel */
.info-panel {
    margin-bottom: var(--spacing-xl);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.info-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.info-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
}

.info-header i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.info-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.info-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.info-label {
    font-weight: 500;
    color: var(--text-secondary);
}

.info-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    line-height: 1.5;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-light);
}

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

.btn-secondary {
    background: var(--secondary-color);
    color: var(--text-light);
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.btn-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

/* Debug Panel */
.debug-panel,
.stats-panel {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

.debug-header,
.stats-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.debug-header h3,
.stats-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.debug-header i,
.stats-header i {
    color: var(--primary-color);
}

.debug-content,
.stats-content {
    padding: var(--spacing-lg);
}

.debug-section {
    margin-bottom: var(--spacing-lg);
}

.debug-section:last-child {
    margin-bottom: 0;
}

.debug-section h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-light);
}

.debug-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
}

.debug-item span:first-child {
    color: var(--text-secondary);
    font-weight: 500;
}

.debug-item span:last-child {
    color: var(--text-primary);
    font-weight: 600;
    font-family: monospace;
}

.debug-logs {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: var(--spacing-sm);
    font-family: monospace;
    font-size: var(--font-size-sm);
}

.log-entry {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.log-entry:last-child {
    border-bottom: none;
}

/* Stats Panel */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-light);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    max-width: 300px;
    animation: slideInRight 0.3s ease;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.info {
    border-left: 4px solid var(--info-color);
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

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

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .connection-status {
        font-size: var(--font-size-xs);
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .video-controls-overlay {
        padding: var(--spacing-sm);
    }
    
    .controls-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .volume-controls {
        order: 2;
    }
    
    .time-display {
        order: 1;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .toast-container {
        left: 20px;
        right: 20px;
    }
    
    .toast {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .main {
        padding: var(--spacing-lg) 0;
    }
    
    .video-wrapper {
        border-radius: 0;
    }
    
    .info-card {
        padding: var(--spacing-md);
    }
    
    .debug-content,
    .stats-content {
        padding: var(--spacing-md);
    }
}

/* Print Styles */
@media print {
    .video-container,
    .video-controls-overlay,
    .debug-panel,
    .stats-panel,
    .toast-container {
        display: none !important;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .spinner {
        animation: none;
        border: 4px solid var(--primary-color);
    }
}