/* 背景装饰、按钮样式 → 已迁至 base.css */

/* ========================================
   导航栏
   ======================================== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(250, 247, 242, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.nav-brand img {
    height: 72px;
    width: auto;
    border-radius: var(--radius-sm);
}

.nav-left { display: flex; align-items: center; gap: 24px; }
.nav-links { display: flex; align-items: center; gap: 24px; }

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover { color: var(--accent-primary); background: var(--bg-hover); }
.nav-link.active { color: var(--accent-primary); background: rgba(79, 138, 247, 0.08); font-weight: 600; }
.nav-link i { font-size: 0.9rem; }

/* ========================================
   主要内容
   ======================================== */
.main-content {
    padding-top: calc(var(--nav-height) + 40px);
    padding-bottom: 60px;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

/* ========================================
   Hero 区域
   ======================================== */
.hero-section {
    padding: 30px 0 30px;
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    margin-bottom: 40px;
}

.hero-title { font-size: 3.5rem; font-weight: 700; }
.title-line { display: inline; }

.title-line.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin: 0 auto 20px;
    max-width: 600px;
}


/* ========================================
   板块标题
   ======================================== */
.section-header { text-align: center; margin-bottom: 25px; }

.section-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    box-shadow: var(--shadow-lg);
}

.section-icon.warning {
    background: linear-gradient(135deg, var(--accent-warning), #f97316);
}

.section-title { font-size: 2rem; font-weight: 700; margin-bottom: 10px; color: var(--text-primary); }

/* ========================================
   资源卡片
   ======================================== */
.resources-section {
    margin-bottom: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 30px;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.resource-card {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.resource-card:hover { box-shadow: var(--shadow-xl); }

.resource-card.featured {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, rgba(79, 138, 247, 0.06), rgba(155, 111, 246, 0.06));
    border: 2px solid var(--accent-primary);
}

.card-content {
    position: relative;
    padding: 30px;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: 1fr auto;
    gap: 20px;
}

.card-icon {
    grid-row: 1 / 2;
    grid-column: 1 / 2;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-hover);
}

.card-icon img { width: 100%; height: 100%; object-fit: cover; }

.card-icon.icon-gradient { font-size: 2rem; color: white; }
/* .icon-gradient 颜色变体 → 统一在 base.css */

.card-info { grid-row: 1 / 2; grid-column: 2 / 3; flex: 1; }

.card-title { font-size: 1.5rem; font-weight: 600; margin-bottom: 10px; color: var(--text-primary); }

.card-desc { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 15px; line-height: 1.6; }

.card-actions {
    grid-row: 2 / 3;
    grid-column: 1 / 3;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.resource-card.featured .card-content {
    grid-template-columns: auto 1fr auto;
    grid-template-rows: 1fr;
    align-items: center;
}

.resource-card.featured .card-icon { grid-row: 1 / 2; grid-column: 1 / 2; }
.resource-card.featured .card-info { grid-row: 1 / 2; grid-column: 2 / 3; }

.resource-card.featured .card-actions {
    grid-row: 1 / 2;
    grid-column: 3 / 4;
    flex-direction: column;
    min-width: 150px;
}

/* 按钮样式 → 已迁至 base.css */


/* ========================================
   页脚
   ======================================== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 20px 30px;
    margin-top: 60px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto 40px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
}

.footer-desc { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }

.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.footer-section h4 { font-size: 1rem; font-weight: 600; margin-bottom: 15px; color: var(--text-primary); }
.footer-section ul { list-style: none; }
.footer-section li { margin-bottom: 10px; }

.footer-section a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.footer-bottom { border-top: 1px solid var(--border-color); padding-top: 30px; }

.footer-bottom-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-divider { width: 4px; height: 4px; background: var(--text-muted); border-radius: 50%; }


/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero-title { font-size: 2.8rem; }

    .hero-section,
    .resources-section { padding: 24px; }

    .resources-grid { grid-template-columns: 1fr; }
    
    .card-content {
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
    }
    
    .card-icon { grid-row: 1 / 2; grid-column: 1 / 2; }
    .card-info { grid-row: 1 / 2; grid-column: 2 / 3; }
    .card-actions { grid-row: 2 / 3; grid-column: 1 / 3; justify-content: center; }
    
    .resource-card.featured .card-content {
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
        text-align: center;
    }
    
    .resource-card.featured .card-icon { grid-row: 1 / 2; grid-column: 1 / 2; }
    .resource-card.featured .card-info { grid-row: 1 / 2; grid-column: 2 / 3; }
    .resource-card.featured .card-actions { grid-row: 2 / 3; grid-column: 1 / 3; flex-direction: row; justify-content: flex-end; }
    
    .footer-container { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    .main-nav { padding: 0 20px; }
    .nav-left { gap: 12px; }
    .nav-link { padding: 8px 12px; font-size: 0.85rem; }
    .nav-link span { display: none; }

    .hero-section { padding: 24px 20px; }

    .hero-title { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1rem; }
    .section-title { font-size: 1.6rem; }
    .card-content { padding: 25px; }
    .card-actions { flex-direction: column; justify-content: center; }
    .footer-links { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom-content { flex-direction: column; gap: 10px; text-align: center; }
    .footer-divider { display: none; }
}

@media (max-width: 480px) {
    .main-content { padding-left: 15px; padding-right: 15px; }
    .hero-title { font-size: 1.8rem; }
    .hero-section, .resources-section { padding: 16px; border-radius: var(--radius-lg); }
}

/* ========================================
   返回顶部（全站通用）
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 999;
    cursor: pointer;
    border: none;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

/* 派对活动入口样式 → 已拆分到 assets/css/party-hero.css */