/* Global Styles for 糖心vlog */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #e74c3c;
    --secondary-color: #2c3e50;
    --accent-color: #f39c12;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --hover-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.site-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.site-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #c0392b 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.site-logo h1 a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.site-logo h1 a:hover {
    opacity: 0.9;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.main-nav a:hover {
    background-color: rgba(255,255,255,0.2);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('edg202501.jpg') center/cover;
    color: white;
    padding: 6rem 0;
    text-align: center;
    margin-bottom: 3rem;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-cta {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.6);
}

/* Content Sections */
.content-section {
    padding: 3rem 0;
}

.section-title {
    font-size: 2.2rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.video-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

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

.video-info {
    padding: 1.2rem;
}

.video-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    color: #666;
    font-size: 0.9rem;
}

.video-views,
.video-date {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* Category Cards */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.category-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    text-decoration: none;
    color: inherit;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.category-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.category-info {
    padding: 1.5rem;
    text-align: center;
}

.category-name {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.category-count {
    color: #666;
    font-size: 0.95rem;
}

/* Feature Section */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-item {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    font-size: 2rem;
}

.feature-title {
    font-size: 1.4rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.feature-description {
    color: #666;
    line-height: 1.8;
}

/* About Content */
.about-content {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 3rem;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.about-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 12px;
    margin: 2rem auto;
    display: block;
    box-shadow: var(--shadow);
}

/* Contact Form */
.contact-form {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 0 auto 3rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--secondary-color);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-submit {
    background: linear-gradient(135deg, var(--primary-color), #c0392b);
    color: white;
    padding: 1rem 3rem;
    border: none;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.6);
}

/* Footer */
.site-footer {
    background-color: var(--secondary-color);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: white;
}

.footer-section p,
.footer-section a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    line-height: 2;
}

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

.footer-links {
    list-style: none;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.7);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 3rem 0;
}

.page-link {
    padding: 0.6rem 1.2rem;
    background: var(--card-bg);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.page-link:hover,
.page-link.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .video-grid,
    .category-grid,
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .contact-form,
    .about-content {
        padding: 1.5rem;
    }
}

/* Loading Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}