/* 色咪直播 - 活动中心页面专用样式 */

/* 基础设置和变量 */
:root {
    --primary-color: #ff6b9d;
    --secondary-color: #ff8a80;
    --accent-color: #ffc1cc;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --bg-primary: #ffffff;
    --bg-secondary: #fff5f7;
    --bg-gradient: linear-gradient(135deg, #ff6b9d 0%, #ff8a80 50%, #ffc1cc 100%);
    --shadow-soft: 0 10px 35px rgba(255, 107, 157, 0.15);
    --shadow-hover: 0 20px 45px rgba(255, 107, 157, 0.25);
    --border-radius: 20px;
    --transition: all 0.3s ease;
}

/* 基础容器居中系统 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    width: 100%;
}

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

body {
    font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    overflow-x: hidden;
}

.site-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
.main-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-soft);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

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

.logo-link {
    font-size: 28px;
    font-weight: 700;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: var(--transition);
}

.logo-link:hover {
    transform: scale(1.05);
}

.slogan {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 20px;
    margin: 0;
    flex-wrap: nowrap;
    align-items: center;
}

.nav-item {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 12px;
    transition: var(--transition);
    white-space: nowrap;
    font-size: 14px;
    position: relative;
    overflow: hidden;
}

.nav-item:hover,
.nav-item.active {
    background: var(--bg-gradient);
    color: white;
    transform: translateY(-2px);
}

.nav-item.cta-btn {
    background: var(--bg-gradient);
    color: white;
    font-weight: 600;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    padding-top: 80px;
}

/* 活动英雄区域 */
.activities-hero {
    background: var(--bg-gradient);
    color: white;
    padding: 60px 0 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.activities-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="rgba(255,255,255,0.1)"><circle cx="200" cy="50" r="30"/><circle cx="600" cy="20" r="20"/><circle cx="800" cy="70" r="25"/></svg>');
    opacity: 0.3;
    animation: float 15s ease-in-out infinite;
}

.page-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    z-index: 2;
}

.page-subtitle {
    font-size: 18px;
    opacity: 0.9;
    position: relative;
    z-index: 2;
}

/* 精选活动区域 */
.featured-activities {
    padding: 80px 0;
    background: var(--bg-primary);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 30px;
}

.activity-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    position: relative;
}

.activity-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.activity-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.02);
}

.activity-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--bg-gradient);
    color: white;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.activity-card.hot .activity-badge {
    background: #e74c3c;
}

.activity-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.activity-content {
    padding: 25px;
}

.activity-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.activity-time {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    padding: 8px 15px;
    background: var(--bg-secondary);
    border-radius: 10px;
}

.time-label {
    color: var(--text-secondary);
    font-size: 14px;
}

.time-value {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
}

.activity-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.activity-rewards {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.reward-item {
    background: var(--accent-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.reward-icon {
    font-size: 14px;
}

.participate-btn {
    width: 100%;
    padding: 12px 20px;
    background: var(--bg-gradient);
    color: white;
    border: none;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.participate-btn.hot {
    background: #e74c3c;
}

.participate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

/* 活动日历区域 */
.activity-calendar {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.day-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

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

.day-card.today {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, #fff0f3, #ffffff);
}

.day-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--bg-secondary);
}

.day-date {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.day-name {
    font-size: 16px;
    color: var(--text-secondary);
}

.day-activities {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.day-activity {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 10px 15px;
    background: var(--bg-secondary);
    border-radius: 10px;
    transition: var(--transition);
}

.day-activity:hover {
    background: var(--accent-color);
}

.activity-time {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
    min-width: 50px;
}

.activity-name {
    color: var(--text-primary);
    font-size: 14px;
}

/* 参与指南区域 */
.participation-guide {
    padding: 80px 0;
    background: var(--bg-primary);
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

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

.step-number {
    width: 40px;
    height: 40px;
    background: var(--bg-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    flex-shrink: 0;
}

.step-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.step-desc {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 底部样式 */
.main-footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 30px;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    line-height: 1.6;
    margin-bottom: 20px;
    opacity: 0.9;
}

.footer-copyright {
    font-size: 14px;
    opacity: 0.7;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.contact-info p {
    margin-bottom: 10px;
    opacity: 0.9;
}

/* 动画效果 */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .page-title {
        font-size: 32px;
    }
    
    .activities-grid,
    .calendar-grid,
    .guide-steps {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
}