/* global.css */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --accent-color: #28a745;
    --background-color-body: #FFFFFF;
    --background-color-main-content: #FFFFFF;
    --background-color-overlay: rgba(0, 0, 0, 0.7);
    --input-background-color: #FFFFFF;
    --card-bg: #FFFFFF;
    --text-color: #000000;
    --text-color-light: #495057;
    --text-color-heading: var(--text-color);
    --button-text-color: #FFFFFF;
    --border-color: #DEE2E6;
    --border-radius-small: 4px;
    --border-radius-medium: 8px;
    --border-radius-large: 12px;
    --shadow-light: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-strong: 0 8px 16px rgba(0,0,0,0.2);
    --hover-color-light: #E9ECEF;
    --hover-color-dark: #0056b3;
    --active-color: #004085;
    --primary-color-hover: #0056b3;
    --secondary-color-hover: #545b62;
    --spacing-unit: 1rem;
    --spacing-unit-small: 0.5rem;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-heading: var(--font-body);
}

/* Dark Mode */
body.dark-mode {
    --primary-color: #6a9eff;
    --secondary-color: #adb5bd;
    --accent-color: #79d18e;
    --background-color-body: #000000;
    --background-color-main-content: #000000;
    --background-color-overlay: rgba(0, 0, 0, 0.9);
    --input-background-color: #2a2a2a;
    --card-bg: #000000;
    --text-color: #E0E0E0;
    --text-color-light: #B0B0B0;
    --text-color-heading: var(--text-color);
    --button-text-color: #FFFFFF;
    --border-color: #000000;
    --shadow-light: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-medium: 0 4px 8px rgba(0,0,0,0.5);
    --shadow-strong: 0 8px 16px rgba(0,0,0,0.6);
    --hover-color-light: #333333;
    --hover-color-dark: #4a7fdc;
    --active-color: #3b6ac9;
    --primary-color-hover: #4a7fdc;
    --secondary-color-hover: #868e96;
}

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

html {
    font-size: 100%;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--spacing-unit);
    line-height: 1.6;
    background-color: var(--background-color-body);
    color: var(--text-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-color-heading);
    line-height: 1.2;
    margin-top: calc(var(--spacing-unit) * 1.5);
    margin-bottom: var(--spacing-unit);
    transition: color 0.3s ease;
}

h1 {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--primary-color);
}
h2 {
    font-size: 2rem;
    font-weight: 700;
}
h3 {
    font-size: 1.65rem;
    font-weight: 600;
}
h4 {
    font-size: 1.5rem;
    font-weight: 600;
}
h5 {
    font-size: 1.25rem;
    font-weight: 500;
}
h6 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color-light);
}

p {
    margin-bottom: var(--spacing-unit);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease, text-decoration 0.2s ease;
}

a:hover {
    color: var(--primary-color-hover);
    text-decoration: underline;
}

button, .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius-medium);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--button-text-color);
    background-color: var(--primary-color);
    transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
    text-decoration: none;
    text-transform: none;
    letter-spacing: normal;
    box-shadow: var(--shadow-light);
}

button:hover, .button:hover {
    background-color: var(--primary-color-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.button-secondary {
    background-color: transparent;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
    box-shadow: none;
}

.button-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--button-text-color);
    box-shadow: var(--shadow-light);
}

input[type="search"],
input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    margin-bottom: var(--spacing-unit);
    background-color: var(--input-background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    color: var(--text-color);
    font-family: var(--font-body);
    font-size: var(--spacing-unit);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease, color 0.3s ease;
}

input[type="search"]::placeholder,
input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder,
textarea::placeholder {
    color: var(--text-color-light);
    opacity: 0.7;
}

input[type="search"]:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.3);
}

/* Header & Navigation */
header {
    background-color: var(--background-color-main-content);
    padding: 0.5rem 0;
    box-shadow: var(--shadow-medium);
    position: relative;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.main-nav {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 1.5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    color: var(--text-color-heading);
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: bold;
    white-space: nowrap;
    transition: color 0.3s ease;
}

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

/* Desktop Search Form */
.search-form-desktop {
    display: flex;
    flex-grow: 1;
    margin: 0 var(--spacing-unit);
    max-width: 400px;
    order: 0;
}

.search-form-desktop input[type="search"] {
    flex-grow: 1;
    padding: 0.65rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-medium) 0 0 var(--border-radius-medium);
    font-size: 1rem;
    outline: none;
    background-color: var(--input-background-color);
    color: var(--text-color);
    margin-bottom: 0;
}

.search-form-desktop button {
    background-color: var(--accent-color);
    color: var(--button-text-color);
    border-radius: 0 var(--border-radius-medium) var(--border-radius-medium) 0;
    font-weight: bold;
    padding: 0.65rem 1rem;
    text-transform: none;
    letter-spacing: unset;
    box-shadow: none;
    border: 1px solid var(--accent-color);
}

.search-form-desktop button:hover {
    background-color: var(--accent-color);
    filter: brightness(1.1);
    transform: none;
    box-shadow: none;
}

/* Navigation Links */
.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    order: 0;
}

.nav-links li {
    margin-left: calc(var(--spacing-unit) * 1.25);
}

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links a.active {
    color: var(--primary-color);
    font-weight: 600;
}

.dark-mode-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    margin-left: var(--spacing-unit);
    color: var(--text-color);
    transition: color 0.3s ease, transform 0.2s ease;
}

.dark-mode-toggle:hover {
    transform: scale(1.1);
    color: var(--primary-color);
}

/* --- Mobile Search Specific Styles --- */
.mobile-search-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--text-color);
    font-size: 1.5rem;
    margin-left: auto;
    margin-right: var(--spacing-unit);
    transition: color 0.3s ease, transform 0.2s ease;
}

.mobile-search-toggle:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

.mobile-search-toggle svg {
    display: block;
    width: 24px;
    height: 24px;
}

.mobile-search-overlay {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background-color-overlay);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.mobile-search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-form-mobile {
    display: flex;
    position: relative;
    width: 90%;
    max-width: 500px;
    background: var(--background-color-main-content);
    padding: var(--spacing-unit);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-strong);
    flex-wrap: nowrap;
}

.search-form-mobile input[type="search"] {
    flex-grow: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    font-size: 1rem;
    outline: none;
    background-color: var(--input-background-color);
    color: var(--text-color);
    margin-right: var(--spacing-unit-small);
    margin-bottom: 0;
}

.search-form-mobile button[type="submit"] {
    background-color: var(--accent-color);
    color: var(--button-text-color);
    border: none;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.search-form-mobile button[type="submit"]:hover {
    background-color: var(--accent-color);
    filter: brightness(1.1);
    transform: none;
}

.close-search-button {
    position: absolute;
    top: -1.5rem;
    right: -0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    font-size: 2rem;
    transition: color 0.3s ease, transform 0.2s ease;
}

.close-search-button:hover {
    color: var(--primary-color);
    transform: rotate(90deg);
}

.close-search-button svg {
    display: block;
    width: 72px;
    height: 72px;
}

/* --- End of Mobile Search Specific Styles --- */


/* Main Content */
main {
    width: 100%;
    margin: 0;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 1.5);
    background-color: var(--background-color-main-content);
    box-shadow: var(--shadow-medium);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    border-radius: var(--border-radius-large);
    min-height: calc(100vh - 120px);
    display: flex;
    flex-direction: column;
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: var(--spacing-unit);
    font-size: 0.9em;
    color: var(--text-color-light);
    padding: var(--spacing-unit) 0;
    border-bottom: 1px solid var(--border-color);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.breadcrumb ol {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb a {
    color: var(--secondary-color);
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.breadcrumb .separator {
    margin: 0 0.5rem;
    color: var(--border-color);
    transition: color 0.3s ease;
}

.breadcrumb li:last-child span {
    font-weight: 600;
    color: var(--text-color);
    transition: color 0.3s ease;
}

/* Titles */
.page-title, .category-title-header, .search-results-title {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 1.2);
    border-bottom: 3px solid var(--accent-color);
    padding-bottom: var(--spacing-unit);
    display: inline-block;
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

.page-title small {
    display: block;
    font-size: 0.6em;
    color: var(--text-color-light);
    margin-top: 0.5em;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    text-align: left;
    margin-top: calc(var(--spacing-unit) * 1.5);
    margin-bottom: calc(var(--spacing-unit) * 1);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
    display: inline-block;
    padding-right: var(--spacing-unit);
    width: auto;
    transition: color 0.3s ease, border-color 0.3s ease;
    color: var(--text-color-heading);
}

.category-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-top: calc(var(--spacing-unit) * 1.5);
    margin-bottom: calc(var(--spacing-unit) * 1);
    text-align: left;
    color: var(--text-color-heading);
    position: relative;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    padding-right: var(--spacing-unit);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.category-title .category-link {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

.category-title .category-link:hover {
    color: var(--primary-color);
}

.page-info {
    font-size: 0.6em;
    color: var(--text-color-light);
    display: block;
    margin-top: 5px;
    transition: color 0.3s ease;
}

/* Video Grid & Cards */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 1.5);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.video-card {
    display: flex;
    flex-direction: column;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-medium);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
    text-decoration: none;
    color: inherit;
    position: relative;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    background-color: var(--hover-color-light);
}

.thumbnail-container {
    width: 100%;
    padding-bottom: 56.25%;
    position: relative;
    overflow: hidden;
}

.thumbnail-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-thumbnail {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease-in-out, transform 0.3s ease;
}

.video-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

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

.video-card:hover .video-preview {
    opacity: 1;
}

.video-card.video-preview-error .video-preview {
    display: none !important;
}

.video-card.video-preview-error:hover .video-thumbnail {
    opacity: 1 !important;
    transform: scale(1) !important;
}

.video-card.video-preview-error:hover .video-preview {
    opacity: 0 !important;
    display: none !important;
}

.duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8em;
}

.video-info {
    padding: var(--spacing-unit);
}

.video-title {
    font-size: 1.2rem;
    margin-top: 0;
    margin-bottom: 0.5rem;
    color: var(--text-color-heading);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    transition: color 0.3s ease;
}

.video-category {
    font-size: 0.85em;
    color: var(--text-color-light);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 2);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 1.5);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.hero-section h1 {
    margin-bottom: 0.5rem;
    line-height: 1.2;
    color: white;
    font-size: 2.5rem;
}

.hero-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 750px;
    margin: 0 auto;
}

.latest-videos-section,
.all-categories-section {
    margin-top: calc(var(--spacing-unit) * 2.5);
}

.category-group {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

/* No Content Messages */
.no-videos-overall, .no-videos-in-category, .no-videos-found, .no-categories, .no-tags-message {
    grid-column: 1 / -1;
    text-align: center;
    font-size: 1.1em;
    color: var(--text-color-light);
    padding: calc(var(--spacing-unit) * 2) 0;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-light);
    transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

.view-all-button-container {
    text-align: right;
    margin-top: var(--spacing-unit);
}

.view-all-button {
    display: inline-block;
    padding: 0.75rem 1.25rem;
    background-color: var(--accent-color);
    color: var(--button-text-color);
    text-decoration: none;
    border-radius: var(--border-radius-medium);
    font-weight: 500;
    transition: background-color 0.2s ease-in-out, transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-light);
}

.view-all-button:hover {
    background-color: var(--accent-color);
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Video Detail Page */
.video-detail-page {
}

.video-player-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background-color: #000;
    border-radius: var(--border-radius-large);
    overflow: hidden;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    box-shadow: var(--shadow-medium);
}

.video-player-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

main.video-detail-page .video-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-color-heading);
    margin-top: var(--spacing-unit);
    margin-bottom: var(--spacing-unit);
    line-height: 1.3;
    text-align: left;
    border-bottom: none;
    padding-bottom: 0;
}

.video-description {
    font-size: 1em;
    color: var(--text-color-light);
    line-height: 1.6;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    max-width: 750px;
    transition: color 0.3s ease;
}

.video-tags-container {
    margin-top: calc(var(--spacing-unit) * 1.8);
    border-top: 1px solid var(--border-color);
    padding-top: calc(var(--spacing-unit) * 1);
    transition: border-color 0.3s ease;
}

main.video-detail-page h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-color-heading);
    margin-top: calc(var(--spacing-unit) * 1.5);
    margin-bottom: var(--spacing-unit);
    transition: color 0.3s ease;
}

/* Tags (for individual video pages) */
.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.tag-item {
    display: inline-block;
    background-color: var(--background-color-body);
    color: var(--text-color-light);
    font-size: 0.9em;
    padding: 0.3em 0.7em;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.tag-item:hover {
    color: var(--button-text-color);
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    text-decoration: none;
    transform: none;
    box-shadow: none;
    cursor: pointer;
}

body.dark-mode .tag-item {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

body.dark-mode .tag-item:hover {
    color: var(--button-text-color);
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Related Videos */
.related-videos-section {
    margin-top: calc(var(--spacing-unit) * 2.5);
}

.related-videos-section .section-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: left;
    margin-top: calc(var(--spacing-unit) * 1.5);
    margin-bottom: calc(var(--spacing-unit) * 1);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
    display: inline-block;
    padding-right: var(--spacing-unit);
    width: auto;
    color: var(--text-color-heading);
}

/* Pagination (General for all paginated lists) */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: calc(var(--spacing-unit) * 1.5);
    padding: var(--spacing-unit);
    background-color: var(--background-color-main-content);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-light);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.pagination-link {
    min-width: 40px;
    height: 40px;
    padding: 0 0.8rem;
    font-size: 1em;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.pagination-link:hover {
    background-color: var(--primary-color);
    color: var(--button-text-color);
    text-decoration: none;
    border-color: var(--primary-color);
}

.pagination-link.active {
    background-color: var(--primary-color);
    color: var(--button-text-color);
    border-color: var(--primary-color);
    font-weight: bold;
    pointer-events: none;
}

.pagination-link.ellipsis {
    background-color: transparent;
    border-color: transparent;
    color: var(--text-color-light);
    cursor: default;
    pointer-events: none;
}

/* --- Pagination for Tags Page Specific Styles --- */
.pagination-nav {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
}

.pagination-list {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.pagination-list .pagination-item {
    display: inline-block;
}

.pagination-list .pagination-link {
    display: block;
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-color-light);
    background-color: var(--card-bg);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.pagination-list .pagination-link:hover {
    background-color: var(--accent-color-hover);
    border-color: var(--accent-color-hover);
    color: white;
}

.pagination-list .pagination-link.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    font-weight: bold;
    cursor: default;
}
/* --- End of Pagination for Tags Page Specific Styles --- */


/* Categories & Tags Grid */
.category-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 1.5);
}

.category-item {
    padding: calc(var(--spacing-unit) * 1.2);
    background-color: var(--card-bg);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
}

.category-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    background-color: var(--hover-color-light);
}

.category-item-title {
    font-size: 1.4em;
    font-weight: 600;
    color: var(--text-color-heading);
    margin-bottom: 0.2rem;
}

.category-item-count {
    font-size: 0.9em;
    color: var(--text-color-light);
}

.tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.8rem;
    padding: calc(var(--spacing-unit) * 1);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.tag-card {
    padding: 1rem;
    font-size: 1em;
    min-height: 80px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-light);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
}

.tag-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    background-color: var(--hover-color-light);
}

/* Footer */
footer {
    background-color: var(--background-color-main-content);
    color: var(--text-color-light);
    text-align: center;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 1.5);
    margin-top: auto;
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    box-shadow: var(--shadow-medium);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* --- Short Video Page (src/pages/shorts/[id].astro) --- */
.short-video-page {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1.5rem;
    background-color: var(--background-color-main-content);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.short-video-page .breadcrumb {
    padding-left: 0;
    padding-right: 0;
    border-bottom: none;
    margin-bottom: 1.2rem;
}
.short-video-page .breadcrumb ol {
    justify-content: center;
}

.video-container {
    width: 100%;
    max-width: 450px;
    margin: 0 auto 1.8rem auto;
    aspect-ratio: 9 / 16;
    background-color: black;
    border-radius: var(--border-radius-medium);
    overflow: hidden;
    box-shadow: var(--shadow-strong);
}

.main-short-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.short-video-title {
    font-size: clamp(1.8rem, 5vw, 3rem);
    margin-top: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--text-color-heading);
    text-align: center;
    line-height: 1.2;
    transition: color 0.3s ease;
}

.short-video-description {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--text-color-light);
    margin-bottom: 1.8rem;
    text-align: center;
    transition: color 0.3s ease;
}

.link-to-full-video {
    text-align: center;
    margin-top: 2rem;
}

.link-to-full-video a {
    display: inline-block;
    padding: 0.85rem 1.8rem;
    background-color: var(--primary-color);
    color: var(--button-text-color);
    text-decoration: none;
    border-radius: var(--border-radius-medium);
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-light);
}

.link-to-full-video a:hover {
    background-color: var(--primary-color-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

/* --- 404 Not Found Page --- */
.not-found-page {
    text-align: center;
    padding: calc(var(--spacing-unit) * 2) var(--spacing-unit);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.not-found-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-large);
    padding: calc(var(--spacing-unit) * 2.5);
    margin: calc(var(--spacing-unit) * 2) auto;
    max-width: 800px;
    box-shadow: var(--shadow-medium);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.not-found-title {
    font-size: 6em;
    color: var(--primary-color);
    margin-bottom: var(--spacing-unit-small);
    line-height: 1;
}

.not-found-message {
    font-size: 1.8em;
    color: var(--text-color-heading);
    margin-bottom: var(--spacing-unit);
    font-weight: 600;
}

.not-found-suggestion {
    font-size: 1.2em;
    color: var(--text-color-light);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.button-primary {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--button-text-color);
    padding: 0.9em 1.8em;
    border-radius: var(--border-radius-medium);
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-light);
}

.button-primary:hover {
    background-color: var(--primary-color-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.search-form-404 {
    margin-top: calc(var(--spacing-unit) * 2.5);
    border-top: 1px solid var(--border-color);
    padding-top: calc(var(--spacing-unit) * 1.5);
}

.search-form-404 p {
    margin-bottom: var(--spacing-unit-small);
    color: var(--text-color);
}

.search-form-404 .search-input-group {
    display: flex;
    justify-content: center;
    gap: var(--spacing-unit-small);
    flex-wrap: wrap;
}

.search-form-404 input[type="text"] {
    flex-grow: 1;
    max-width: 300px;
    padding: 0.8em 1em;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    margin-bottom: 0;
}

.search-form-404 button {
    padding: 0.8em 1.5em;
    background-color: var(--secondary-color);
    color: var(--button-text-color);
    border: none;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-light);
}

.search-form-404 button:hover {
    background-color: var(--secondary-color-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.random-videos-section {
    margin-top: calc(var(--spacing-unit) * 3);
    padding-top: calc(var(--spacing-unit) * 2);
    border-top: 1px solid var(--border-color);
}

.random-videos-section .section-title {
    text-align: center;
    margin-bottom: var(--spacing-unit);
    color: var(--text-color-heading);
    font-size: 2.2em;
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    padding-right: var(--spacing-unit);
    padding-bottom: 0.5rem;
    width: auto;
}

/* --- Search No Results Message --- */
.no-results-message {
    text-align: center;
    padding: calc(var(--spacing-unit) * 1.5);
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-large);
    margin: calc(var(--spacing-unit) * 2) auto;
    max-width: 700px;
    box-shadow: var(--shadow-medium);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Media Queries */
@media (max-width: 992px) {
    main {
        padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 1.5);
    }

    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.3rem; }
    h4 { font-size: 1.3rem; }
    h5 { font-size: 1.1rem; }
    h6 { font-size: 0.9rem; }
    
    .hero-section h1 { font-size: 2.2rem; }
    .hero-section p { font-size: 1rem; }
    
    main.video-detail-page .video-title { font-size: 1.2rem; }
    main.video-detail-page h2 { font-size: 1.6rem; }
    .related-videos-section .section-title { font-size: 1.4rem; }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--spacing-unit);
    }

    .category-list {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: calc(var(--spacing-unit) * 1);
    }

    .short-video-title { font-size: clamp(1.6rem, 4.5vw, 2.5rem); }
    .short-video-description { font-size: 1rem; }

    .not-found-title { font-size: 5em; }
    .not-found-message { font-size: 1.5em; }
    .not-found-suggestion { font-size: 1.1em; }
    .random-videos-section .section-title { font-size: 2em; }
}

@media (max-width: 768px) {
    /* Navbar Adjustments for Mobile */
    .main-nav {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0.8rem 1.5rem;
    }

    .logo {
        margin-bottom: 0;
        width: auto;
        text-align: left;
        flex-grow: 1;
    }

    .search-form-desktop {
        display: none;
    }

    .mobile-search-toggle {
        display: block;
        margin-left: var(--spacing-unit);
        order: 1;
    }

    .nav-links {
        display: flex;
        width: auto;
        justify-content: flex-end;
        margin-top: 0;
        order: 2;
    }
    .nav-links li {
        margin-left: var(--spacing-unit);
        margin-right: 0;
    }
    .dark-mode-toggle {
        margin-left: var(--spacing-unit-small);
    }

    main {
        padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 1);
    }

    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.4rem; }
    h3 { font-size: 1.2rem; }
    h4 { font-size: 1.2rem; }
    h5 { font-size: 1rem; }
    h6 { font-size: 0.85rem; }

    .hero-section h1 { font-size: 1.6rem; }
    .hero-section p { font-size: 0.95rem; }
    
    main.video-detail-page .video-title {
        font-size: 1.4rem;
        text-align: center;
    }
    main.video-detail-page h2 { font-size: 1.4rem; }
    .related-videos-section .section-title {
        font-size: 1.2rem;
        text-align: center;
        width: 100%;
        padding-right: 0;
    }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: var(--spacing-unit-small);
    }

    .page-title, .section-title, .category-title-header, .search-results-title, .category-title {
        text-align: center;
        display: block;
        width: 100%;
        padding-right: 0;
    }

    .view-all-button-container {
        text-align: center;
    }

    .category-list {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: calc(var(--spacing-unit) * 0.8);
    }
    .category-item {
        padding: calc(var(--spacing-unit) * 1);
    }

    .tags-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.6rem;
    }
    .tag-card {
        min-height: 70px;
        font-size: 0.9em;
        padding: 0.8rem;
    }

    .short-video-title { font-size: clamp(1.5rem, 4vw, 2.2rem); }
    .short-video-description { font-size: 0.95rem; }
    .video-container {
        max-width: 100%;
    }

    .not-found-title { font-size: 4em; }
    .not-found-message { font-size: 1.3em; }
    .not-found-suggestion { font-size: 1em; }
    .random-videos-section .section-title { font-size: 1.8em; }
    .search-form-404 input[type="text"] {
        width: 100%;
        max-width: none;
    }
    .search-form-404 .search-input-group {
        flex-direction: column;
        gap: var(--spacing-unit-small);
    }
    .search-form-404 button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-unit: 0.8rem;
    }

    main {
        padding: var(--spacing-unit);
    }

    h1 { font-size: 1.7rem; }
    h2 { font-size: 1.3rem; }
    h3 { font-size: 1.2rem; }
    h4 { font-size: 1rem; }
    h5 { font-size: 0.9rem; }
    h6 { font-size: 0.8rem; }
    
    .hero-section h1 { font-size: 1.7rem; }
    .hero-section p { font-size: 0.85rem; }
    
    main.video-detail-page .video-title { font-size: 1.1rem; }
    main.video-detail-page h2 { font-size: 1.2rem; }
    .related-videos-section .section-title { font-size: 1.2rem; }
    
    .video-grid {
        grid-template-columns: 1fr;
        padding: 0;
    }
    .video-info {
        padding: var(--spacing-unit);
    }

    .pagination {
        padding: 0.5rem;
        gap: 0.4rem;
    }
    .pagination-link {
        min-width: 32px;
        height: 32px;
        font-size: 0.8em;
        padding: 0 0.4rem;
    }

    .tags-grid {
        grid-template-columns: 1fr;
    }
    .tag-card {
        min-height: 60px;
        font-size: 0.85em;
        padding: 0.6rem;
    }

    .video-player-container {
        padding-bottom: 100%;
        margin-bottom: calc(var(--spacing-unit) * 1.2);
    }

    .short-video-title { font-size: clamp(1.2rem, 3.5vw, 1.8rem); }
    .short-video-description { font-size: 0.85rem; }

    .not-found-title { font-size: 3em; }
    .not-found-message { font-size: 1.1em; }
    .not-found-suggestion { font-size: 0.9em; }
    .random-videos-section .section-title { font-size: 1.5em; }
}