/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根变量定义 - 红色主题 */
:root {
    --primary-color: #B22222;
    --secondary-color: #DC143C;
    --accent-color: #FF0000;
    --text-light: #ffffff;
    --text-dark: #2c3e50;
    --bg-dark: #2C1810;
    --bg-darker: #1A0F0A;
    --bg-card: #3C2820;
    --border-color: #8B4513;
    --shadow: 0 4px 6px rgba(255, 0, 0, 0.3);
    --shadow-hover: 0 8px 15px rgba(255, 0, 0, 0.4);
    --transition: all 0.3s ease;
}

/* 基础样式 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-dark) !important;
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

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

.nav-logo h2 {
    color: #FF0000 !important;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

/* 确保移动端导航菜单正确显示 */
@media (max-width: 1023px) {
    .nav-menu {
        display: flex !important;
    }
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
    color: #FF0000 !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #FF0000 !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
    margin: 3px 0;
    transition: var(--transition);
}

/* 主要内容区域 */
.main-content {
    margin-top: 70px;
}

.page-section {
    display: none;
    min-height: calc(100vh - 70px);
}

.page-section.active {
    display: block;
}

/* 英雄区域 */
.hero-section {
    position: relative;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6);
}

.hero-text {
    position: relative;
    z-index: 10;
    text-align: center;
    background: rgba(0, 0, 0, 0.5);
    padding: 3rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    max-width: 800px;
    margin: 0 2rem;
}

.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.hero-text p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-light);
}

.cta-button {
    background: #FF0000 !important;
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.cta-button:hover {
    background: #B22222;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* 特色区域 */
.features-section {
    padding: 5rem 0;
    background: var(--bg-darker);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-light);
}

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

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.feature-card p {
    color: #bdc3c7;
    line-height: 1.6;
}

/* 关于我们区域 */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.about-text p {
    margin-bottom: 2rem;
    color: #bdc3c7;
    line-height: 1.8;
}

.about-text ul {
    list-style: none;
    padding-left: 0;
}

.about-text li {
    padding: 0.5rem 0;
    color: #bdc3c7;
    position: relative;
    padding-left: 1.5rem;
}

.about-text li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.stat-item h4 {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #bdc3c7;
    font-weight: 500;
}

/* 活动动态区域 */
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.activity-card {
    background: var(--bg-card);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.activity-image {
    height: 200px;
    overflow: hidden;
}

.activity-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.activity-card:hover .activity-image img {
    transform: scale(1.05);
}

.activity-content {
    padding: 1.5rem;
}

.activity-content h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.activity-date {
    color: #95a5a6;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.activity-content p {
    color: #bdc3c7;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.read-more {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.read-more:hover {
    color: #B22222;
}

/* 页脚样式 */
.footer {
    background: var(--bg-darker);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

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

.footer-section h3,
.footer-section h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer-section p {
    color: #bdc3c7;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: var(--transition);
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    background: var(--bg-card);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: #95a5a6;
}

/* 通用样式 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-light);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--accent-color);
}

/* 页面内边距 */
.page-section {
    padding: 3rem 0;
}

.page-section:nth-child(even) {
    background: var(--bg-darker);
}

/* 滚动动画样式 */
.animate-on-scroll {
    opacity: 0 !important;
    transform: translateY(30px) !important;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.animate-on-scroll.animate-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* 回退机制：如果JavaScript失败，确保元素可见 */
.no-js .animate-on-scroll,
.animate-on-scroll.no-animation {
    opacity: 1 !important;
    transform: none !important;
}

/* 不同的动画延迟 */
.animate-on-scroll.delay-1 {
    transition-delay: 0.1s;
}

.animate-on-scroll.delay-2 {
    transition-delay: 0.2s;
}

.animate-on-scroll.delay-3 {
    transition-delay: 0.3s;
}

.animate-on-scroll.delay-4 {
    transition-delay: 0.4s;
}

.animate-on-scroll.delay-5 {
    transition-delay: 0.5s;
}

.animate-on-scroll.delay-6 {
    transition-delay: 0.6s;
}

/* 从左侧滑入 */
.slide-in-left {
    opacity: 0 !important;
    transform: translateX(-50px) !important;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.slide-in-left.animate-in {
    opacity: 1 !important;
    transform: translateX(0) !important;
}

/* 从右侧滑入 */
.slide-in-right {
    opacity: 0 !important;
    transform: translateX(50px) !important;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.slide-in-right.animate-in {
    opacity: 1 !important;
    transform: translateX(0) !important;
}

/* 缩放动画 */
.scale-in {
    opacity: 0 !important;
    transform: scale(0.8) !important;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.scale-in.animate-in {
    opacity: 1 !important;
    transform: scale(1) !important;
}

/* 旋转进入 */
.rotate-in {
    opacity: 0 !important;
    transform: rotate(-10deg) scale(0.9) !important;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.rotate-in.animate-in {
    opacity: 1 !important;
    transform: rotate(0deg) scale(1) !important;
}

/* 淡入动画 */
.fade-in {
    opacity: 0 !important;
    transition: opacity 0.8s ease-in-out !important;
}

.fade-in.animate-in {
    opacity: 1 !important;
}

/* 按钮特殊动画 */
.button-animate {
    opacity: 0 !important;
    transform: translateY(20px) scale(0.95) !important;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

.button-animate.animate-in {
    opacity: 1 !important;
    transform: translateY(0) scale(1) !important;
}

/* 文字逐字显示效果 */
.text-reveal {
    opacity: 0 !important;
    transform: translateY(20px) !important;
    transition: all 0.6s ease-out !important;
}

.text-reveal.animate-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* 卡片堆叠效果 */
.card-stack {
    opacity: 0 !important;
    transform: translateY(40px) rotateX(15deg) !important;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.card-stack.animate-in {
    opacity: 1 !important;
    transform: translateY(0) rotateX(0deg) !important;
}

/* 回退机制：如果JavaScript失败，确保所有动画元素可见 */
.no-js .slide-in-left,
.slide-in-left.no-animation,
.no-js .slide-in-right,
.slide-in-right.no-animation,
.no-js .scale-in,
.scale-in.no-animation,
.no-js .rotate-in,
.rotate-in.no-animation,
.no-js .fade-in,
.fade-in.no-animation,
.no-js .button-animate,
.button-animate.no-animation,
.no-js .text-reveal,
.text-reveal.no-animation,
.no-js .card-stack,
.card-stack.no-animation {
    opacity: 1 !important;
    transform: none !important;
}

/* ==================== 消息详情页面样式 ==================== */

/* 消息详情页面头部 */
.message-detail-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.message-detail-header h3 {
    color: var(--accent-color);
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

/* 消息详情内容区域 */
.message-detail-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 消息信息卡片 */
.message-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.message-info-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.message-header-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message-header-info > div {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.message-header-info .label {
    font-weight: 600;
    color: var(--accent-color);
    min-width: 80px;
}

.qq-info {
    color: #888;
    font-size: 14px;
}

.qq-info::before {
    content: "(";
}

.qq-info::after {
    content: ")";
}

/* 消息类型徽章 */
.message-type-badge {
    background: var(--secondary-color);
    color: var(--text-light);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
}

.message-type-badge.system {
    background: linear-gradient(135deg, #FF6B35, #F7931E);
}

.message-type-badge.user {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

/* 消息内容卡片 */
.message-content-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.message-content-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.message-content-card h4 {
    color: var(--accent-color);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

/* 消息内容文本 */
.message-content-text {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 20px;
    line-height: 1.8;
    font-size: 15px;
    color: var(--text-light);
    white-space: pre-wrap;
    word-wrap: break-word;
    min-height: 100px;
    max-height: 400px;
    overflow-y: auto;
}

.message-content-text::-webkit-scrollbar {
    width: 6px;
}

.message-content-text::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

.message-content-text::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 3px;
}

.message-content-text::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 消息操作卡片 */
.message-actions-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    align-items: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .message-detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .message-detail-header h3 {
        font-size: 20px;
    }
    
    .message-header-info > div {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .message-header-info .label {
        min-width: auto;
    }
    
    .message-actions-card {
        flex-direction: column;
        gap: 10px;
    }
    
    .message-actions-card button {
        width: 100%;
    }
}

/* 消息详情页面特殊动画 */
.message-detail-content > * {
    opacity: 0;
    transform: translateY(20px);
    animation: slideInUp 0.6s ease-out forwards;
}

.message-detail-content > *:nth-child(1) {
    animation-delay: 0.1s;
}

.message-detail-content > *:nth-child(2) {
    animation-delay: 0.2s;
}

.message-detail-content > *:nth-child(3) {
    animation-delay: 0.3s;
}

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