:root {
    --background: #000000;
    --surface: #0f0f0f;
    --surface-light: #1a1a1a;
    --primary: #ffffff;
    --secondary: #e0e0e0;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --hover-overlay: rgba(255, 255, 255, 0.1);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    --radius: 8px;
    --transition: all 0.25s ease;
    --transition-fast: all 0.15s ease;
    --blur-amount: 10px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, Cantarell, sans-serif;
}

body {
    background-color: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

header {
    background-color: var(--surface);
    padding: 12px 16px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.logo h1 {
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 1px;
}

.logo-icon {
    color: var(--text-primary);
    font-size: 1rem;
}

.search-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    max-width: 500px;
    margin: 0 20px;
}

.search-input {
    flex: 1;
    padding: 10px 16px;
    border-radius: 30px;
    border: none;
    background-color: var(--surface-light);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--surface-light);
}

.search-input:focus {
    outline: none;
    background-color: var(--hover-overlay);
}

.search-button {
    background-color: var(--surface-light);
    border: none;
    border-radius: 50%;
    height: 40px;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.search-button:hover {
    background-color: var(--hover-overlay);
}

.github-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--surface-light);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 700;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    margin-right: 10px;
}

.github-button:hover {
    background-color: var(--hover-overlay);
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 24px;
    perspective: 1000px;
}

.trending-grid, .search-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 12px;
}

.search-grid {
    margin-top: 32px;
}

.video-card {
    background-color: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    box-shadow: none;
    transition: var(--transition);
    position: relative;
    transform: translateY(0);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.video-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.1);
}

.thumbnail-container {
    position: relative;
    overflow: hidden;
    padding-top: 56.25%;
}

.thumbnail {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .thumbnail {
    transform: scale(1.05);
}

.duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.video-info {
    padding: 16px;
}

.video-title {
    font-size: 0.95rem;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition);
    letter-spacing: 0.2px;
    line-height: 1.4;
}

.video-card:hover .video-title {
    color: var(--secondary);
}

.video-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.uploader {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.uploader-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.video-stats {
    display: flex;
    font-size: 0.8rem;
    color: var(--text-secondary);
    gap: 12px;
}

.stat {
    display: flex;
    align-items: center;
    gap: 4px;
}

.page {
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    transition: opacity 0.3s ease, transform 0.3s ease, filter 0.3s ease;
    transform-origin: center top;
    transform: scale(1);
    filter: blur(0);
    pointer-events: none;
}

.active {
    opacity: 1;
    visibility: visible;
    position: relative;
    transform: scale(1);
    filter: blur(0);
    pointer-events: auto;
}

.page.zoom-out {
    opacity: 0;
    transform: scale(0.95);
    filter: blur(var(--blur-amount));
}

.page.zoom-in {
    opacity: 0;
    transform: scale(1.05);
    filter: blur(var(--blur-amount));
}

.transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 1000;
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    background-color: var(--background);
    transform: scale(0);
    border-radius: 50%;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        border-radius 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.transition-overlay.active {
    opacity: 1;
    visibility: visible;
    transform: scale(2);
    border-radius: 0;
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--surface),
        var(--surface-light),
        var(--surface)
    );
    background-size: 200% 100%;
    animation: shine 1.5s infinite;
    border-radius: var(--radius);
}

@keyframes shine {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.skeleton-video {
    height: 200px;
}

.skeleton-title {
    height: 20px;
    margin: 10px 0;
    width: 90%;
}

.skeleton-uploader {
    height: 16px;
    width: 60%;
    margin-bottom: 8px;
}

.skeleton-stats {
    height: 14px;
    width: 40%;
}

.video-player-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.player-wrapper {
    position: relative;
    padding-bottom: 56.25%;

    height: 0;
    overflow: hidden;
    border-radius: var(--radius);
    background-color: black;
    box-shadow: var(--shadow);
}

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

.video-detail {
    background-color: var(--surface);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.video-detail-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.video-detail-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.video-detail-uploader {
    display: flex;
    align-items: center;
    gap: 12px;
}

.uploader-avatar-large {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.uploader-info {
    display: flex;
    flex-direction: column;
}

.uploader-name {
    font-weight: 600;
    font-size: 1rem;
}

.video-detail-stats {
    display: flex;
    gap: 24px;
    align-items: center;
}

.detail-stat {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.detail-stat i {
    font-size: 1.2rem;
}

.related-videos {
    margin-top: 32px;
}

.section-title {
    font-size: 1.1rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
    letter-spacing: 0.5px;
    font-weight: 400;
}

.section-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 40px;
    height: 1px;
    background-color: var(--secondary);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.search-heading {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-query {
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    color: var(--text-primary);
}

.search-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
    background-color: var(--surface-light);
    padding: 4px 8px;
    border-radius: 4px;
}

.no-results {
    text-align: center;
    padding: 40px 0;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animated-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animated-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.preparation-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    border-radius: var(--radius);
}

.preparation-status {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    text-align: center;
    letter-spacing: 0.3px;
}

.preparation-progress-container {
    width: 80%;
    max-width: 300px;
    background-color: var(--surface-light);
    height: 4px;
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.preparation-progress-bar {
    height: 100%;
    width: 0%;
    background-color: var(--primary);
    border-radius: 2px;
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.preparation-progress-bar::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.1),
        rgba(255, 255, 255, 0.2),
        rgba(255, 255, 255, 0.1)
    );
    animation: shimmer 1.5s infinite;
    transform: translateX(-100%);
}

.reload-button {
    margin-top: 20px;
    padding: 10px 20px;
    background-color: var(--surface-light);
    border: none;
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.reload-button:hover {
    background-color: var(--hover-overlay);
    transform: translateY(-2px);
}

@keyframes shimmer {
    100% {
        transform: translateX(100%);
    }
}

.loading-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 60vh;
}

.loader {
    width: 48px;
    height: 48px;
    border: 5px solid var(--surface-light);
    border-bottom-color: var(--primary);
    border-radius: 50%;
    animation: rotation 1s linear infinite;
}

@keyframes rotation {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    .trending-grid,
    .search-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    .video-detail-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .container {
        padding: 16px;
    }

    .search-bar {
        max-width: 100%;
        margin: 16px 0 0;
        order: 3;
        width: 100%;
    }

    header {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .trending-grid,
    .search-grid {
        grid-template-columns: 1fr;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .video-detail-stats {
        flex-wrap: wrap;
    }
}

.channel-header {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 32px;
    background-color: var(--surface);
    box-shadow: var(--shadow);
}

.channel-banner-container {
    position: relative;
    height: 150px;
    overflow: hidden;
    background-color: var(--surface-light);
}

.channel-banner {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.channel-info {
    display: flex;
    padding: 24px;
    position: relative;
    gap: 20px;
}

.channel-avatar-container {
    flex-shrink: 0;
}

.channel-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--surface);
    box-shadow: var(--shadow);
    background-color: var(--surface-light);
}

.channel-details {
    flex-grow: 1;
}

.channel-title-container {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.channel-title {
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.channel-verified {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.channel-stats {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.channel-description {
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 0.95rem;
    white-space: pre-line;
    max-height: 100px;
    overflow-y: auto;
    margin-top: 12px;
}

.channel-videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.load-more-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 40px;
    flex-direction: column;
    min-height: 60px;
}

.load-more-button {
    background-color: var(--surface);
    color: var(--text-primary);
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.load-more-button:hover {
    background-color: var(--surface-light);
    transform: translateY(-2px);
}

.load-more-error {
    color: #ff5555;
    background-color: rgba(255, 85, 85, 0.1);
    border-radius: var(--radius);
    padding: 12px 24px;
    text-align: center;
    cursor: pointer;
}

@media (max-width: 768px) {
    .channel-info {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .channel-avatar-container {
        margin-top: -50px;
    }

    .channel-title-container {
        justify-content: center;
    }

    .channel-description {
        text-align: left;
    }

    .channel-videos-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 480px) {
    .channel-videos-grid {
        grid-template-columns: 1fr;
    }
}