* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --dawn-blue: #0077b6;
    --sky-blue: #00b4d8;
    --light-blue: #90e0ef;
    --sunrise: #ff9e00;
    --light-sunrise: #ffd166;
    --dark-blue: #03045e;
    --text-light: #f8f9fa;
    --text-dark: #212529;
    --card-bg: rgba(255, 255, 255, 0.1);
}

body {
    background: linear-gradient(135deg, var(--dark-blue), var(--dawn-blue), var(--sky-blue));
    color: var(--text-light);
    min-height: 100vh;
    padding-bottom: 50px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Шапка сайта */
header {
    background: rgba(3, 4, 94, 0.8);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo i {
    font-size: 2.5rem;
    color: var(--sunrise);
}

.logo h1 {
    font-size: 2.2rem;
    background: linear-gradient(to right, var(--light-blue), var(--light-sunrise));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: var(--text-light);
    font-size: 1.2rem;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 30px;
    transition: all 0.3s ease;
}

nav a:hover, nav a.active {
    background: var(--sky-blue);
    color: var(--dark-blue);
}

.user-actions {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 10px 20px;
    border-radius: 30px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-login {
    background: transparent;
    border: 2px solid var(--light-blue);
    color: var(--light-blue);
}

.btn-login:hover {
    background: var(--light-blue);
    color: var(--dark-blue);
}

.btn-register {
    background: var(--sunrise);
    color: var(--dark-blue);
}

.btn-register:hover {
    background: var(--light-sunrise);
    transform: translateY(-3px);
}

/* Фильтры */
.filters {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px;
    margin: 30px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-group label {
    font-weight: 600;
    color: var(--light-blue);
}

select, .search-box input {
    padding: 12px 20px;
    border-radius: 30px;
    border: 2px solid var(--sky-blue);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    font-size: 1rem;
    min-width: 200px;
}

select:focus, .search-box input:focus {
    outline: none;
    border-color: var(--sunrise);
    box-shadow: 0 0 0 3px rgba(255, 158, 0, 0.3);
}

.search-box {
    position: relative;
    margin-left: auto;
}

.search-box input {
    padding-right: 50px;
    width: 300px;
}

.search-box i {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--sunrise);
    font-size: 1.2rem;
}

/* Контент */
.section-title {
    font-size: 2rem;
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--sunrise);
    display: inline-block;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.video-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.video-thumbnail {
    height: 200px;
    width: 100%;
    background: linear-gradient(45deg, var(--sky-blue), var(--dawn-blue));
    position: relative;
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .video-thumbnail img {
    transform: scale(1.1);
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 158, 0, 0.8);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.video-info {
    padding: 20px;
}

.video-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--light-sunrise);
}

.video-meta {
    display: flex;
    justify-content: space-between;
    color: var(--light-blue);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.video-type {
    background: var(--sky-blue);
    color: var(--dark-blue);
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.8rem;
}

.video-desc {
    font-size: 0.95rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rating {
    color: var(--light-sunrise);
    font-weight: 600;
}

.rating i {
    margin-right: 5px;
}

/* Видео-плеер */
.video-player-container {
    max-width: 800px;
    margin: 40px auto;
    background: rgba(3, 4, 94, 0.7);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    position: relative;
    z-index: 200;
}

.player-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.player-title {
    font-size: 1.8rem;
    color: var(--light-sunrise);
}

.close-player {
    background: var(--sunrise);
    color: var(--dark-blue);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close-player:hover {
    transform: rotate(90deg);
    background: var(--light-sunrise);
}

video {
    width: 100%;
    border-radius: 10px;
    outline: none;
    background: #000;
}

.video-meta-info {
    margin-top: 15px;
    display: flex;
    justify-content: space-between;
    color: var(--light-blue);
}

.add-to-favorites {
    background: var(--sky-blue);
    color: var(--dark-blue);
    border: none;
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.add-to-favorites:hover {
    background: var(--light-blue);
}

/* Подвал */
footer {
    background: rgba(3, 4, 94, 0.8);
    margin-top: 60px;
    padding: 30px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--sky-blue);
    color: var(--dark-blue);
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--sunrise);
    transform: translateY(-5px);
}

.copyright {
    color: var(--light-blue);
    font-size: 0.9rem;
}

/* Адаптивность */
@media (max-width: 992px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .search-box {
        margin-left: 0;
        width: 100%;
    }
    
    .search-box input {
        width: 100%;
    }
    
    nav ul {
        gap: 10px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .video-player-container {
        width: 90%;
    }
}

@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

@media (max-width: 576px) {
    .filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .logo h1 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.7rem;
    }

    .player-title {
        font-size: 1.4rem;
    }
}