/* Responsive Design for YouTube Clone */

/* Mobile Devices (320px - 768px) */
@media (max-width: 768px) {
    .header {
        padding: 0 8px;
    }
    
    .header-center {
        margin: 0 8px;
        max-width: none;
    }
    
    .search-input {
        width: 0;
        opacity: 0;
        transition: all 0.3s ease;
    }
    
    .search-input.expanded {
        width: 200px;
        opacity: 1;
    }
    
    .voice-btn {
        display: none;
    }
    
    .upload-btn span {
        display: none;
    }
    
    .sidebar {
        transform: translateX(-240px);
        z-index: 999;
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .content {
        margin-left: 0;
        padding: 16px 8px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .video-title {
        font-size: 16px;
    }
    
    .category-pills {
        padding: 12px 0;
        gap: 8px;
    }
    
    .category-pill {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

/* Tablet Devices (768px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .header-center {
        margin: 0 24px;
    }
    
    .sidebar {
        width: 200px;
    }
    
    .content {
        margin-left: 200px;
        padding: 20px;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 16px;
    }
    
    .category-pills {
        gap: 10px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop Devices (1024px - 1440px) */
@media (min-width: 1025px) and (max-width: 1440px) {
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

/* Large Desktop Devices (1440px+) */
@media (min-width: 1441px) {
    .header-center {
        max-width: 720px;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
        gap: 24px;
    }
    
    .content {
        max-width: 1600px;
        margin: 0 auto;
        padding: 32px;
    }
}

/* Touch Devices */
@media (hover: none) and (pointer: coarse) {
    .video-card:hover {
        transform: none;
        box-shadow: none;
    }
    
    .video-card:active {
        transform: scale(0.98);
    }
    
    .sidebar-item:hover {
        background-color: transparent;
    }
    
    .sidebar-item:active {
        background-color: var(--bg-tertiary);
    }
    
    .category-pill:hover {
        background-color: var(--bg-tertiary);
    }
    
    .category-pill:active {
        background-color: #d0d0d0;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo i {
        font-size: 26px;
    }
    
    .video-thumbnail img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .sidebar,
    .category-pills,
    .load-more-container,
    .footer {
        display: none;
    }
    
    .content {
        margin: 0;
        padding: 0;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .video-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}