/* ================================
   Base Styles
   ================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: #000000;
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ================================
   Navigation
   ================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
}

.logo {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    color: #ffffff;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #888;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #ffffff;
}

.nav-link.active {
    color: #ffffff;
}

.social-icons {
    display: flex;
    gap: 20px;
    margin-left: 10px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
    transition: color 0.3s ease;
}

.social-icon:hover {
    color: #ffffff;
}

/* ================================
   Category Section
   ================================ */

.category-section {
    padding: 100px 40px 80px;
}

.category-title {
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #666;
    text-align: center;
    margin-bottom: 40px;
}

/* ================================
   Video Grid Layouts
   ================================ */

.video-grid {
    display: grid;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.video-grid.two-col {
    grid-template-columns: 1fr 1fr;
    padding: 0 60px;
}

.video-grid.one-col {
    grid-template-columns: 1fr;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 100px;
}

.video-grid.three-col {
    grid-template-columns: 1fr 1fr 1fr;
    padding: 0 80px;
}

.video-item {
    position: relative;
    background: #111;
}

.video-item iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: block;
}

.video-item.center {
    transform: scale(1.05);
    z-index: 1;
}

/* ================================
   About Section
   ================================ */

.about-section {
    padding: 120px 40px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.about-label {
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #666;
    margin-bottom: 40px;
    text-align: left;
}

.about-photos {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
}

.about-photos img {
    width: 280px;
    height: 380px;
    object-fit: cover;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.section-label {
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #666;
    margin-bottom: 30px;
}

.about-text-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    text-align: left;
}

.about-column {
    text-align: left;
}

.about-column p {
    font-size: 13px;
    line-height: 2.2;
    color: #888;
    font-weight: 300;
    margin-bottom: 24px;
    text-align: left;
}

.about-column.zh p {
    color: #aaa;
}

.about-column.en p {
    color: #777;
}

/* ================================
   Contact Section
   ================================ */

.contact-section {
    padding: 80px 40px 120px;
    text-align: center;
}

.contact-info {
    font-size: 18px;
    color: #888;
    font-weight: 300;
}

/* ================================
   Mobile Responsive
   ================================ */

@media (max-width: 768px) {
    .nav {
        padding: 20px 24px;
    }

    .logo {
        font-size: 12px;
    }

    .nav-right {
        gap: 20px;
    }

    .nav-link {
        font-size: 11px;
    }

    .social-icons {
        gap: 15px;
    }

    .social-icon svg {
        width: 16px;
        height: 16px;
    }

    .category-section {
        padding: 80px 24px 60px;
    }

    .category-title {
        font-size: 10px;
        margin-bottom: 30px;
    }

    .video-grid.two-col,
    .video-grid.three-col {
        grid-template-columns: 1fr;
        padding: 0 20px;
        gap: 15px;
    }

    .video-grid.one-col {
        padding: 0 20px;
    }

    .video-item.center {
        transform: none;
    }

    .about-section {
        padding: 100px 24px 60px;
    }

    .about-photos {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .about-photos img {
        width: 100%;
        max-width: 350px;
        height: auto;
        aspect-ratio: 4 / 5;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .about-text-columns {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-section {
        padding: 60px 24px 100px;
    }
}