/* Цветовая палитра - светлая тема */
:root {
    --color-blue: #4a6fa5;
    --color-light-blue: #7ba3d0;
    --color-orange: #d4a574;
    --color-dark-orange: #b8915f;
    --color-brown: #8b7355;
    --color-light-brown: #d4c4b0;
    --color-dark-brown: #6b5d47;
    --color-black: #2c2c2c;
    --color-white: #ffffff;
    --color-gray: #e8e4df;
    --color-dark-gray: #5a5a5a;
    
    /* Фоновые цвета */
    --bg-primary: linear-gradient(135deg, #f5f1eb 0%, #ebe6df 100%);
    --bg-card: var(--color-white);
    --bg-input: var(--color-white);
    --bg-input-focus: #fafafa;
    
    /* Текстовые цвета */
    --text-primary: var(--color-black);
    --text-secondary: var(--color-dark-gray);
    
    /* Границы */
    --border-color: var(--color-light-brown);
    --border-color-hover: var(--color-light-blue);
}

/* Цветовая палитра - темная тема (сохраняем ту же гамму) */
[data-theme="dark"] {
    --color-blue: #6b9dd9;
    --color-light-blue: #8fb8e8;
    --color-orange: #e8b88a;
    --color-dark-orange: #d4a574;
    --color-brown: #a6896b;
    --color-light-brown: #8b7a6a;
    --color-dark-brown: #7a6b5a;
    --color-black: #e0e0e0;
    --color-white: #2d3a4a;
    --color-gray: #3a4a5a;
    --color-dark-gray: #b0b0b0;
    
    /* Фоновые цвета - серо-голубые оттенки */
    --bg-primary: linear-gradient(135deg, #2d3a4a 0%, #3a4a5a 100%);
    --bg-card: #3a4a5a;
    --bg-input: #3a4a5a;
    --bg-input-focus: #4a5a6a;
    
    /* Текстовые цвета */
    --text-primary: var(--color-black);
    --text-secondary: var(--color-dark-gray);
    
    /* Границы */
    --border-color: var(--color-light-brown);
    --border-color-hover: var(--color-light-blue);
}

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

html {
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    flex: 1;
    width: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
}

/* Header */
.main-header {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-light-blue) 100%);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-bottom: 2px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}

.header-logo {
    margin: 0;
    font-size: 1.8em;
    font-weight: 600;
}

.header-logo a {
    color: var(--color-white);
    text-decoration: none;
    transition: opacity 0.3s;
}

.header-logo a:hover {
    opacity: 0.9;
}

.header-nav {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: nowrap;
}

.nav-link {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* Footer */
.main-footer {
    background: linear-gradient(135deg, var(--color-brown) 0%, var(--color-dark-brown) 100%);
    color: var(--color-white);
    margin-top: auto;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
    border-top: 2px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
    padding: 0 20px;
}

.footer-content {
    padding: 24px 0;
    text-align: center;
}

.footer-text {
    margin: 0;
    font-size: 0.95em;
    color: var(--color-white);
}

.footer-text a {
    color: var(--color-light-blue);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-text a:hover {
    color: var(--color-white);
    text-decoration: underline;
}

/* Banner */
.banner-section {
    margin: 30px 0 40px 0;
}

.banner-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, rgba(74, 111, 165, 0.1) 0%, rgba(123, 163, 208, 0.1) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: border-color 0.3s ease;
}

[data-theme="dark"] .banner-placeholder {
    background: linear-gradient(135deg, rgba(107, 157, 217, 0.15) 0%, rgba(143, 184, 232, 0.15) 100%);
}

.banner-text {
    font-size: 1.8em;
    font-weight: 600;
    color: var(--color-blue);
    text-align: center;
    margin: 0;
}

/* Сообщения */
.messages {
    margin-bottom: 20px;
}

.alert {
    padding: 14px 18px;
    border-radius: 6px;
    margin-bottom: 12px;
    border-left: 4px solid;
}

.alert-success {
    background-color: rgba(123, 163, 208, 0.15);
    color: var(--color-blue);
    border-left-color: var(--color-light-blue);
}

.alert-error {
    background-color: rgba(212, 165, 116, 0.2);
    color: var(--color-brown);
    border-left-color: var(--color-orange);
}

/* Заголовки страниц */
.page-header {
    margin-bottom: 35px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
    transition: border-color 0.3s ease;
}

.page-header h1 {
    font-size: 2.2em;
    margin-bottom: 12px;
    color: var(--color-blue);
    font-weight: 600;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.05em;
    line-height: 1.6;
}

.subtitle p,
.subtitle div,
.subtitle span {
    margin-bottom: 8px;
    line-height: 1.6;
}

.subtitle p:last-child,
.subtitle div:last-child {
    margin-bottom: 0;
}

.subtitle strong {
    font-weight: 600;
    color: var(--color-blue);
}

.subtitle em {
    font-style: italic;
    color: var(--color-brown);
}

.subtitle a {
    color: var(--color-light-blue);
    text-decoration: none;
}

.subtitle a:hover {
    text-decoration: underline;
    color: var(--color-blue);
}

.back-link {
    display: inline-block;
    margin-bottom: 15px;
    color: var(--color-light-blue);
    text-decoration: none;
    font-size: 0.95em;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--color-blue);
    text-decoration: underline;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 11px 22px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-light-blue) 100%);
    color: var(--color-white);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-light-blue) 0%, var(--color-blue) 100%);
    box-shadow: 0 4px 8px rgba(74, 111, 165, 0.3);
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-primary:not(:hover):not(:disabled),
[data-theme="dark"] .btn-primary.btn-sm:not(:hover):not(:disabled),
[data-theme="dark"] a.btn-primary:not(:hover):not(:disabled),
[data-theme="dark"] button.btn-primary:not(:hover):not(:disabled) {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-light-blue) 100%) !important;
    color: var(--color-black) !important;
    border-color: var(--color-light-blue) !important;
}

[data-theme="dark"] .btn-primary:disabled,
[data-theme="dark"] .btn-primary.btn-sm:disabled,
[data-theme="dark"] a.btn-primary:disabled,
[data-theme="dark"] button.btn-primary:disabled {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-light-blue) 100%) !important;
    color: var(--color-black) !important;
    border-color: var(--color-light-blue) !important;
    opacity: 0.6;
}

[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] .btn-primary.btn-sm:hover,
[data-theme="dark"] a.btn-primary:hover,
[data-theme="dark"] button.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-light-blue) 0%, var(--color-blue) 100%) !important;
    color: var(--color-black) !important;
    box-shadow: 0 4px 8px rgba(74, 111, 165, 0.3) !important;
}

.btn-secondary {
    background-color: var(--color-brown);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-dark-brown);
    box-shadow: 0 4px 8px rgba(139, 115, 85, 0.3);
    transform: translateY(-1px);
}

.btn-info {
    background-color: var(--color-light-blue);
    color: var(--color-white);
    transition: all 0.3s ease;
}

.btn-info:hover {
    background-color: var(--color-blue);
    box-shadow: 0 4px 8px rgba(123, 163, 208, 0.3);
}

[data-theme="dark"] .btn-info:not(:hover):not(:disabled),
[data-theme="dark"] .btn-info.btn-sm:not(:hover):not(:disabled),
[data-theme="dark"] a.btn-info:not(:hover):not(:disabled),
[data-theme="dark"] button.btn-info:not(:hover):not(:disabled) {
    background-color: var(--color-light-blue) !important;
    color: var(--color-black) !important;
    border-color: var(--color-light-blue) !important;
}

[data-theme="dark"] .btn-info:disabled,
[data-theme="dark"] .btn-info.btn-sm:disabled,
[data-theme="dark"] a.btn-info:disabled,
[data-theme="dark"] button.btn-info:disabled {
    background-color: var(--color-light-blue) !important;
    color: var(--color-black) !important;
    border-color: var(--color-light-blue) !important;
    opacity: 0.6;
}

[data-theme="dark"] .btn-info:hover,
[data-theme="dark"] .btn-info.btn-sm:hover,
[data-theme="dark"] a.btn-info:hover,
[data-theme="dark"] button.btn-info:hover {
    background-color: var(--color-blue) !important;
    color: var(--color-black) !important;
    box-shadow: 0 4px 8px rgba(123, 163, 208, 0.3) !important;
}

.btn-warning {
    background-color: var(--color-orange);
    color: var(--color-black);
    transition: all 0.3s ease;
}

.btn-warning:hover {
    background-color: var(--color-dark-orange);
    box-shadow: 0 4px 8px rgba(212, 165, 116, 0.3);
}

[data-theme="dark"] .btn-warning,
[data-theme="dark"] .btn-warning.btn-sm,
[data-theme="dark"] a.btn-warning,
[data-theme="dark"] button.btn-warning {
    background-color: var(--color-dark-brown) !important;
    color: var(--color-white) !important;
    border-color: var(--color-dark-brown) !important;
}

[data-theme="dark"] .btn-warning:hover,
[data-theme="dark"] .btn-warning.btn-sm:hover,
[data-theme="dark"] a.btn-warning:hover,
[data-theme="dark"] button.btn-warning:hover {
    background-color: var(--color-brown) !important;
    color: var(--color-white) !important;
    border-color: var(--color-brown) !important;
    box-shadow: 0 4px 8px rgba(139, 115, 85, 0.3) !important;
}

.btn-danger {
    background-color: var(--color-brown);
    color: var(--color-white);
}

.btn-danger:hover {
    background-color: #a05d3d;
    box-shadow: 0 4px 8px rgba(139, 115, 85, 0.3);
}

.btn-sm {
    padding: 7px 14px;
    font-size: 0.875em;
}

/* Сетка групп */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 35px;
}

.group-card {
    background: var(--bg-card);
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.group-card-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
    background: var(--color-gray);
}

.group-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.group-card:hover .group-card-image img {
    transform: scale(1.05);
}

.group-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(74, 111, 165, 0.15);
    border-color: var(--border-color-hover);
}

.group-card-content {
    padding: 28px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.group-card h2 {
    font-size: 1.5em;
    margin-bottom: 12px;
    color: var(--color-blue);
    font-weight: 600;
}

.group-description {
    color: var(--text-secondary);
    margin-bottom: 22px;
    line-height: 1.5;
    flex: 1;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.group-description p,
.group-description div,
.group-description span {
    margin-bottom: 8px;
    line-height: 1.5;
}

.group-description p:last-child,
.group-description div:last-child {
    margin-bottom: 0;
}

.group-description strong {
    font-weight: 600;
    color: var(--color-blue);
}

.group-description em {
    font-style: italic;
    color: var(--color-brown);
}

.group-description a {
    color: var(--color-light-blue);
    text-decoration: none;
}

.group-description a:hover {
    text-decoration: underline;
    color: var(--color-blue);
}

.group-actions {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.group-actions .btn {
    width: 100%;
    text-align: center;
}

/* Сетка видео */
.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 35px;
}

.video-card {
    background: var(--bg-card);
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.video-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(74, 111, 165, 0.15);
    border-color: var(--border-color-hover);
}

.video-card-content {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.video-card h3 {
    font-size: 1.2em;
    margin-bottom: 12px;
    color: var(--color-blue);
    font-weight: 600;
    line-height: 1.4;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.video-description {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
    flex: 1;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    min-height: 60px;
}

.video-description p,
.video-description div,
.video-description span {
    margin-bottom: 8px;
    line-height: 1.5;
}

.video-description p:last-child,
.video-description div:last-child {
    margin-bottom: 0;
}

.video-description strong {
    font-weight: 600;
    color: var(--color-blue);
}

.video-description em {
    font-style: italic;
    color: var(--color-brown);
}

.video-description a {
    color: var(--color-light-blue);
    text-decoration: none;
}

.video-description a:hover {
    text-decoration: underline;
    color: var(--color-blue);
}

.video-description ul,
.video-description ol {
    margin-left: 20px;
    margin-bottom: 8px;
}

.video-description li {
    margin-bottom: 4px;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85em;
    color: var(--color-brown);
    margin-bottom: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--color-gray);
    flex-shrink: 0;
}

.video-card-content .btn {
    margin-top: auto;
    width: 100%;
    text-align: center;
}

/* Плеер видео */
.video-player-container {
    background: var(--color-black);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 25px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    border: 2px solid var(--border-color);
    transition: border-color 0.3s ease;
}

.video-player {
    width: 100%;
    height: auto;
    display: block;
}

.video-info {
    background: var(--bg-card);
    padding: 24px;
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.info-item {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-gray);
    color: var(--text-secondary);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.info-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.info-item strong {
    color: var(--color-blue);
}

/* Админ-панель */
.admin-user-info {
    margin-top: 18px;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 18px;
    background: rgba(123, 163, 208, 0.1);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    transition: border-color 0.3s ease;
}

[data-theme="dark"] .admin-user-info {
    background: rgba(143, 184, 232, 0.15);
}

.admin-email {
    color: var(--color-blue);
    font-weight: 500;
    flex: 1;
}

.admin-actions {
    margin-top: 18px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-bottom: 35px;
}

.stat-card {
    background: var(--bg-card);
    padding: 28px;
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(74, 111, 165, 0.12);
}

.stat-value {
    font-size: 2.5em;
    font-weight: bold;
    color: var(--color-blue);
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1.05em;
}

.admin-table-container {
    background: var(--bg-card);
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    overflow-x: auto;
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table thead {
    background: linear-gradient(135deg, rgba(123, 163, 208, 0.15) 0%, rgba(74, 111, 165, 0.1) 100%);
}

.admin-table th {
    padding: 14px;
    text-align: left;
    font-weight: 600;
    color: var(--color-blue);
    border-bottom: 2px solid var(--border-color);
    transition: border-color 0.3s ease;
}

.admin-table td {
    padding: 14px;
    border-bottom: 1px solid var(--color-gray);
    color: var(--text-secondary);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.admin-table tbody tr {
    transition: background-color 0.2s;
}

.admin-table tbody tr:hover {
    background-color: rgba(123, 163, 208, 0.08);
}

.admin-table td strong {
    display: block;
    color: var(--color-blue);
    font-weight: 600;
    line-height: 1.4;
    word-wrap: break-word;
}

.actions-cell {
    white-space: nowrap;
}

.actions-cell .btn {
    margin-right: 6px;
}

.actions-cell form {
    display: inline;
}

/* Формы */
.form-container {
    background: var(--bg-card);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    max-width: 650px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.video-form {
    width: 100%;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-blue);
}

.form-control {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1em;
    font-family: inherit;
    background-color: var(--bg-input);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--border-color-hover);
    box-shadow: 0 0 0 3px rgba(123, 163, 208, 0.15);
    background-color: var(--bg-input-focus);
}

[data-theme="dark"] .form-control:focus {
    box-shadow: 0 0 0 3px rgba(143, 184, 232, 0.2);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Дополнительные стили для textarea в темной теме */
[data-theme="dark"] textarea,
[data-theme="dark"] textarea.form-control {
    background-color: var(--bg-input) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] textarea:focus,
[data-theme="dark"] textarea.form-control:focus {
    background-color: var(--bg-input-focus) !important;
    border-color: var(--border-color-hover) !important;
}

/* Стили для placeholder в textarea в темной теме */
[data-theme="dark"] textarea::placeholder,
[data-theme="dark"] textarea.form-control::placeholder {
    color: #b0c4de !important;
    opacity: 0.9 !important;
}

.form-help {
    display: block;
    margin-top: 6px;
    font-size: 0.875em;
    color: var(--color-brown);
}

.form-actions {
    margin-top: 32px;
    display: flex;
    gap: 12px;
}

.current-file-info {
    background: rgba(212, 196, 176, 0.2);
    padding: 16px;
    border-radius: 6px;
    margin-top: 8px;
    border: 1px solid var(--border-color);
    transition: border-color 0.3s ease;
}

[data-theme="dark"] .current-file-info {
    background: rgba(139, 122, 107, 0.25);
}

.current-file-info p {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.current-file-info p:last-child {
    margin-bottom: 0;
}

.current-file-info strong {
    color: var(--color-blue);
}

/* Пустое состояние */
.empty-state {
    text-align: center;
    padding: 70px 25px;
    background: var(--bg-card);
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.empty-state p {
    font-size: 1.2em;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Информационная секция */
.info-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin: 40px 0;
}

.info-card {
    background: var(--bg-card);
    padding: 28px;
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.info-card h3 {
    color: var(--color-blue);
    font-size: 1.3em;
    margin-bottom: 12px;
    font-weight: 600;
}

.info-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.info-card a {
    color: var(--color-light-blue);
    text-decoration: none;
    transition: color 0.3s;
}

.info-card a:hover {
    color: var(--color-blue);
    text-decoration: underline;
}

/* Ссылка на админку */
.admin-link {
    text-align: center;
    margin-top: 35px;
    padding-top: 25px;
    border-top: 2px solid var(--border-color);
    transition: border-color 0.3s ease;
}

/* Бейдж */
.badge {
    display: inline-block;
    padding: 5px 10px;
    background: linear-gradient(135deg, var(--color-light-blue) 0%, var(--color-blue) 100%);
    color: var(--color-white);
    border-radius: 14px;
    font-size: 0.85em;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(74, 111, 165, 0.2);
}

/* Адаптивность */
@media (max-width: 768px) {
    /* Предотвращаем горизонтальную прокрутку на мобильных */
    html, body {
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100% !important;
        position: relative;
    }
    
    .container {
        padding: 15px;
        overflow-x: hidden;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .header-container {
        padding: 0 15px;
        overflow-x: hidden;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .header-content {
        flex-direction: column;
        gap: 15px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .header-nav {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .theme-toggle {
        width: 36px;
        height: 36px;
        padding: 6px;
        min-width: 36px;
        max-width: 36px;
        flex-shrink: 0;
    }
    
    .theme-toggle svg {
        width: 20px;
        height: 20px;
    }
    
    .banner-text {
        font-size: 1.4em;
    }
    
    .banner-placeholder {
        height: 150px;
    }
    
    .groups-grid,
    .videos-grid {
        grid-template-columns: 1fr;
    }
    
    .info-section {
        grid-template-columns: 1fr;
    }
    
    .admin-table-container {
        overflow-x: auto;
    }
    
    .form-container {
        padding: 24px;
    }
    
    .admin-actions {
        flex-direction: column;
    }
    
    .admin-actions .btn {
        width: 100%;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

/* Статусы курсов */
.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-draft {
    background: linear-gradient(135deg, #9e9e9e 0%, #757575 100%);
    color: var(--color-white);
    box-shadow: 0 2px 4px rgba(117, 117, 117, 0.2);
}

.status-public {
    background: linear-gradient(135deg, #66bb6a 0%, #4caf50 100%);
    color: var(--color-white);
    box-shadow: 0 2px 4px rgba(76, 175, 80, 0.2);
}

.status-paid {
    background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-dark-orange) 100%);
    color: var(--color-white);
    box-shadow: 0 2px 4px rgba(212, 165, 116, 0.2);
}

/* Переключатель темы */
.theme-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-white);
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    width: 40px;
    height: 40px;
    min-width: 40px;
    max-width: 40px;
    min-height: 40px;
    max-height: 40px;
    line-height: 1;
    box-sizing: border-box;
    position: relative;
    margin: 0;
    vertical-align: middle;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.theme-toggle:active {
    transform: translateY(0);
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    flex-shrink: 0;
}

.theme-toggle .theme-icon-light,
.theme-toggle .theme-icon-dark {
    display: block;
}

.theme-toggle .theme-icon-light[style*="display: none"],
.theme-toggle .theme-icon-dark[style*="display: none"] {
    display: none !important;
}

[data-theme="dark"] .theme-toggle {
    background: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
}