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

:root {
    --background-color: #ffffff;
    --text-color: #333333;
    --accent-color: #6b7280;
    --card-bg: #f9fafb;
    --secondary-bg: #e5e7eb;
    --header-bg: #1f2937;
    --highlight-color: #4b5e91;
}

body {
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
}

body.dark-theme {
    --background-color: #111827;
    --text-color: #d1d5db;
    --card-bg: #1f2937;
    --secondary-bg: #374151;
    --accent-color: #9ca3af;
    --header-bg: #4a4c50;
    --highlight-color: #6478b3;
}

.header {
    background: var(--header-bg);
    background-color: #9ca3af;
    color: #ffffff;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(133, 48, 48, 0.05);
    padding: 20px 30px;
}

.header-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.header .time {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.search-bar input {
    width: 100%;
    padding: 14px 20px;
    border: 1px solid var(--secondary-bg);
    border-radius: 12px;
    font-size: 16px;
    background: #ffffff;
    transition: all 0.3s;
}

body.dark-theme .search-bar input {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: #4b5563;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(107, 114, 128, 0.1);
}

.nav-buttons {
    display: flex;
    gap: 10px;
    padding: 15px 0;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.nav-buttons::-webkit-scrollbar {
    display: none;
}

.nav-buttons button {
    padding: 10px 20px;
    border: 1px solid var(--secondary-bg);
    border-radius: 12px;
    background-color: #ffffff;
    color: var(--text-color);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    flex-shrink: 0;
}

body.dark-theme .nav-buttons button {
    background-color: var(--card-bg);
    border-color: #4b5563;
}

.nav-buttons button.active,
.nav-buttons button:hover {
    background-color: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
}

.content {
    display: none;
    padding: 20px;
    padding-top: 200px;
    min-height: calc(100vh - 80px);
}

.content.active {
    display: block;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
}

.video-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--secondary-bg);
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.video-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.video-card-content {
    padding: 15px;
}

.video-card-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-color);
}

.video-card-content p {
    font-size: 14px;
    font-weight: 500;
    color: #6b7280;
}

body.dark-theme .video-card-content p {
    color: #9ca3af;
}

.settings-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--secondary-bg);
}

.settings-container h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--text-color);
}

.settings-section {
    margin-bottom: 30px;
    padding: 20px;
    background: #ffffff;
    border-radius: 12px;
    border: 1px solid var(--secondary-bg);
}

body.dark-theme .settings-section {
    background: var(--secondary-bg);
}

.settings-section h2 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 15px;
    color: var(--text-color);
}

.settings-section label {
    display: flex;
    align-items: center;
    font-size: 16px;
    color: var(--text-color);
    cursor: pointer;
    padding: 10px 0;
}

.settings-section input[type="checkbox"] {
    margin-right: 12px;
    accent-color: var(--accent-color);
    width: 20px;
    height: 20px;
}

.settings-section a.game-btn {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background-color: var(--accent-color);
    color: #ffffff;
    text-decoration: none;
    border-radius: 12px;
    font-size: 16px;
    transition: background-color 0.3s;
}

.settings-section a.game-btn i {
    margin-right: 10px;
}

.settings-section a.game-btn:hover {
    background-color: #4b5563;
}

.creator-section {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--highlight-color);
    border-radius: 12px;
}

.creator-section h2 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 15px;
    color: #ffffff;
}

.creator-section a {
    color: #ffffff;
    text-decoration: none;
    font-size: 16px;
    transition: opacity 0.3s;
}
.creator-section p {
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    font-size: 16px;
    transition: opacity 0.3s;
}

.creator-section a:hover {
    opacity: 0.8;
}

.contacts li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    font-size: 16px;
}

.contacts i {
    margin-right: 12px;
    color: var(--accent-color);
    font-size: 20px;
}

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

.contacts a:hover {
    color: var(--accent-color);
}

#about h1 {
    font-size: 28px;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 600;
}

#about p {
    font-size: 16px;
    text-align: center;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

body.dark-theme #about p {
    color: #9ca3af;
}

.footer {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 15px;
    background: #ffffff;
    position: fixed;
    bottom: 0;
    width: 100%;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

body.dark-theme .footer {
    background: var(--card-bg);
}

.nav-btn {
    background: none;
    border: none;
    font-size: 30px;
    color: #6b7280;
    cursor: pointer;
    padding: 12px;
    transition: color 0.3s, transform 0.2s;
}

.nav-btn.active,
.nav-btn:hover {
    color: var(--accent-color);
    transform: scale(1.1);
}

.nav-btn img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}