/* ===== CSS Variables ===== */
:root {
    /* TV Uitwijk / KNLTB colors */
    --primary-color: #003399;
    --primary-dark: #001a4d;
    --secondary-color: #ff6600;
    --secondary-hover: #e65c00;
    --accent-color: #0066cc;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-color: #333333;
    --text-light: #666666;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --modal-bg: rgba(0, 0, 0, 0.8);
    
    --grid-columns-mobile: 2;
    --grid-columns-tablet: 3;
    --grid-columns-desktop: 4;
    
    --border-radius: 8px;
    --transition-speed: 0.2s;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
    min-height: 100vh;
    background-image: radial-gradient(circle at top left, rgba(0, 51, 153, 0.05) 0%, transparent 50%),
                      radial-gradient(circle at bottom right, rgba(255, 102, 0, 0.05) 0%, transparent 50%);
}

/* ===== Header ===== */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px var(--shadow-color);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
}

.logo-container {
    flex-shrink: 0;
}

.logo {
    height: 50px;
    width: auto;
    display: block;
}

.header-content {
    flex: 1;
    min-width: 200px;
}

.header-content h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    font-weight: 600;
    color: white;
}

.header-content .subtitle {
    font-size: 0.875rem;
    color: var(--secondary-color);
    margin: 0;
    font-weight: 500;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-left: auto;
}

.search-container {
    flex: 1;
    min-width: 200px;
    position: relative;
}

.search-container input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--card-background);
    transition: all var(--transition-speed);
    min-width: 200px;
}

.search-container input:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1);
}

.search-container input:focus + #search-clear {
    opacity: 1;
}

#search-clear {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0;
    transition: all var(--transition-speed);
    padding: 0.25rem;
    color: var(--secondary-color);
}

#search-clear:hover {
    color: var(--primary-color);
    opacity: 1;
}

.filter-container select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--card-background);
    cursor: pointer;
    min-width: 150px;
    transition: all var(--transition-speed);
}

.filter-container select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1);
}

.view-toggle {
    display: flex;
    gap: 0.25rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 0.25rem;
}

.view-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    color: white;
    opacity: 0.7;
    transition: all var(--transition-speed);
}

.view-btn svg {
    width: 20px;
    height: 20px;
}

.view-btn:hover {
    opacity: 1;
}

.view-btn.active {
    opacity: 1;
    background-color: var(--secondary-color);
}

/* ===== Main Content ===== */
main {
    padding: 1rem;
    max-width: 1400px;
    margin: 0 auto;
}

.video-count {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.videos-container {
    display: grid;
    gap: 1rem;
    transition: all var(--transition-speed);
}

/* Grid View - Mobile First */
.videos-container.grid-view {
    grid-template-columns: repeat(var(--grid-columns-mobile), 1fr);
}

.videos-container.list-view {
    grid-template-columns: 1fr;
}

/* ===== Video Card ===== */
.video-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 2px 8px var(--shadow-color);
    cursor: pointer;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border: 1px solid var(--border-color);
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(0, 51, 153, 0.2);
    border-color: var(--primary-color);
}

.video-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    background-color: #000;
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-thumbnail video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-thumbnail .play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.video-card:hover .video-thumbnail .play-icon {
    opacity: 1;
}

.video-thumbnail .play-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--secondary-color);
}

.video-info {
    padding: 1rem;
}

.video-info h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.video-info .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.video-info .tag {
    background-color: var(--secondary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    font-size: 0.75rem;
    border: none;
}

/* List View Specific */
.video-card.list-view {
    display: flex;
    gap: 1rem;
}

.video-card.list-view .video-thumbnail {
    width: 120px;
    height: 68px;
    flex-shrink: 0;
}

.video-card.list-view .video-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.video-card.list-view .video-info h3 {
    white-space: normal;
    text-overflow: unset;
    overflow: unset;
}

/* ===== No Results ===== */
.no-results {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}

.no-results.hidden {
    display: none;
}

/* ===== Modal ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed);
}

.modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--primary-dark);
    border-radius: var(--border-radius);
    max-width: 90%;
    max-height: 90%;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.modal-content video {
    width: 100%;
    max-height: 70vh;
    background-color: #000;
}

.modal-info {
    padding: 1rem;
    color: white;
}

.modal-info h2 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.modal-tags .tag {
    background-color: var(--secondary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    font-size: 0.75rem;
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: rgba(0, 0, 0, 0.3);
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    color: white;
    z-index: 10;
    transition: all var(--transition-speed);
}

.close-btn:hover {
    background-color: var(--secondary-color);
    transform: scale(1.1);
}

.close-btn svg {
    width: 20px;
    height: 20px;
}

/* ===== Icon Buttons ===== */
.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

/* ===== Responsive Design ===== */
@media (min-width: 640px) {
    .videos-container.grid-view {
        grid-template-columns: repeat(var(--grid-columns-tablet), 1fr);
    }
}

@media (min-width: 768px) {
    .header-content h1 {
        font-size: 1.75rem;
    }
    
    .logo {
        height: 60px;
    }
}

@media (min-width: 1024px) {
    .videos-container.grid-view {
        grid-template-columns: repeat(var(--grid-columns-desktop), 1fr);
    }
    
    header {
        padding: 1.5rem 2rem;
    }
    
    .header-content h1 {
        font-size: 2rem;
    }
    
    .header-content .subtitle {
        font-size: 1rem;
    }
    
    main {
        padding: 2rem;
    }
    
    .modal-content {
        max-width: 800px;
    }
    
    .logo {
        height: 70px;
    }
}

@media (max-width: 767px) {
    header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .logo-container {
        text-align: center;
    }
    
    .header-content {
        text-align: center;
    }
    
    .controls {
        margin-left: 0;
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-container {
        min-width: 100%;
    }
    
    .filter-container select {
        min-width: 100%;
    }
    
    .view-toggle {
        justify-content: center;
    }
}

/* ===== Loading State ===== */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== Hidden Utility ===== */
.hidden {
    display: none !important;
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}