/* ==================== 全局样式 ==================== */
@import url('https://fonts.googleapis.com/css2?family=ZCOOL+XiaoWei&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --primary: #2c3e50;
    --secondary: #e74c3c;
    --accent: #f39c12;
    --bg: #faf8f5;
    --bg-dark: #f0ebe3;
    --text: #333;
    --text-light: #666;
    --card-bg: #fff;
    --glass: rgba(255, 255, 255, 0.85);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
}

/* 背景纹理 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(231, 76, 60, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(52, 152, 219, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(243, 156, 18, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* 页面过渡动画 */
.page-enter {
    opacity: 0;
    transform: translateY(20px);
}

.page-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

/* ==================== 顶部标题栏 ==================== */
.top-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0 0.5rem;
    height: 60px;
    display: flex;
    align-items: center;
    overflow: visible;
}

.header-title {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 2rem;
    color: var(--primary);
    letter-spacing: 2px;
    white-space: nowrap;
    margin-left: 0.5rem;
}

.header-title span {
    color: var(--secondary);
}

.user-status {
    margin-left: auto;
    margin-right: 0.5rem;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

/* ==================== 容器 ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==================== 主内容区 ==================== */
.main-content {
    padding-top: 80px;
    padding-bottom: 100px;
    min-height: 100vh;
}

/* ==================== 首页 ==================== */
.hero {
    text-align: center;
    padding: 80px 0 60px;
}

.hero-title {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 4rem;
    color: var(--primary);
    letter-spacing: 8px;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-title span {
    color: var(--secondary);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-location {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-location::before {
    content: '📍 ';
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 统计卡片 */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 4rem;
    animation: fadeInUp 1s ease 0.4s both;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

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

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.stat-number {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 3rem;
    color: var(--secondary);
    font-weight: 700;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* 最新留言预览 */
.recent-messages {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 3rem;
}

.latest-activities {
    background: linear-gradient(135deg, #fff5f5 0%, #fff 50%, #f0f9ff 100%);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 8px 32px rgba(231, 76, 60, 0.15);
    margin-bottom: 3rem;
    border: 2px solid rgba(231, 76, 60, 0.1);
}

.section-title {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 1.5rem;
    background: var(--secondary);
    border-radius: 2px;
}

.section-hint {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: -1rem;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.unread-badge {
    font-size: 0.75rem;
    background: #ff4d4f;
    color: #fff;
    border-radius: 50%;
    min-width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
    margin-left: 0.5rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 600;
    line-height: 1;
}

.message-list {
    display: grid;
    gap: 1rem;
}

.message-item {
    padding: 1.2rem;
    background: var(--bg);
    border-radius: 12px;
    border-left: 3px solid var(--accent);
    overflow-wrap: break-word;
    word-break: break-all;
    min-width: 0;
}

.message-nickname {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.message-content {
    color: var(--text);
    line-height: 1.6;
}

.message-time {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.message-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.like-btn {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text-light);
    font-size: 0.9rem;
    padding: 0.3rem 0.6rem;
    border-radius: 20px;
    transition: all 0.2s;
}

.like-btn:hover {
    background: rgba(231, 76, 60, 0.1);
}

.like-btn.liked {
    color: #e74c3c;
}

.like-btn.liked .like-icon {
    animation: likeAnimation 0.3s ease;
}

@keyframes likeAnimation {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.like-icon {
    font-size: 1.1rem;
}

.comment-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text-light);
    font-size: 0.9rem;
    padding: 0.3rem 0.6rem;
    border-radius: 20px;
    transition: all 0.2s;
}

.comment-toggle-btn:hover {
    background: rgba(52, 152, 219, 0.1);
}

.comments-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed rgba(0,0,0,0.1);
}

.comments-list {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 0.75rem;
}

.comment-item {
    padding: 0.6rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.03);
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-nickname {
    font-weight: 600;
    color: var(--secondary);
    font-size: 0.85rem;
    margin-right: 0.5rem;
}

.comment-content {
    color: var(--text);
    font-size: 0.9rem;
    line-height: 1.4;
}

.comment-time {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.2rem;
}

.comment-input-area {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.comment-input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 20px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.comment-input:focus {
    border-color: var(--secondary);
}

.comment-submit-btn {
    background: var(--secondary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.comment-submit-btn:hover {
    background: var(--primary);
}

/* 时光轴 */
.timeline-section {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
}

.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--secondary), var(--accent));
}

.timeline-item {
    position: relative;
    padding-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.35rem;
    top: 5px;
    width: 12px;
    height: 12px;
    background: var(--secondary);
    border-radius: 50%;
    border: 3px solid var(--card-bg);
    box-shadow: 0 0 0 2px var(--secondary);
}

.timeline-year {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.3rem;
    color: var(--secondary);
    margin-bottom: 0.3rem;
}

.timeline-event {
    color: var(--text);
}

/* ==================== 通讯录页面 ==================== */
.page-header {
    text-align: center;
    padding: 3rem 0;
}

.page-title {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-light);
}

/* 搜索框 */
.search-box {
    max-width: 500px;
    margin: 0 auto 2rem;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 1rem 1.5rem;
    padding-left: 3rem;
    border: 2px solid var(--bg-dark);
    border-radius: 50px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--card-bg);
}

.search-box input:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 4px rgba(231, 76, 60, 0.1);
}

.search-box::before {
    content: '🔍';
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
}

/* 离我最近的同学 */
.nearest-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--card-bg), rgba(255,255,255,0.05));
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255,255,255,0.08);
}

.nearest-list {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.nearest-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s;
    flex: 1;
    min-width: 200px;
}

.nearest-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.nearest-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
    overflow: hidden;
}

.nearest-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.nearest-info {
    flex: 1;
}

.nearest-name {
    font-weight: 600;
    color: var(--text);
    font-size: 1rem;
}

.nearest-location {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.2rem;
}

.nearest-distance {
    font-size: 0.85rem;
    color: var(--secondary);
    font-weight: 600;
    white-space: nowrap;
}

/* 学生卡片网格 */
.student-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.student-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.student-card.highlight {
    animation: cardHighlight 1.5s ease-out;
}

@keyframes cardHighlight {
    0% { box-shadow: 0 0 0 4px var(--secondary); transform: scale(1.02); }
    50% { box-shadow: 0 0 0 4px var(--secondary); transform: scale(1.02); }
    100% { box-shadow: var(--shadow); transform: scale(1); }
}

.student-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.student-card:hover::before {
    transform: scaleX(1);
}

.student-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.8rem;
    color: white;
    margin-bottom: 1rem;
}

.student-name {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.student-id {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.8rem;
}

.student-info {
    font-size: 0.9rem;
    color: var(--text);
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.student-info span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.copy-phone-btn {
    background: rgba(0,0,0,0.05);
    border: 1px solid rgba(0,0,0,0.1);
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0.2rem 0.4rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    margin-left: 0.3rem;
    color: var(--text-light);
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
}

.copy-phone-btn:hover {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
    transform: scale(1.05);
}

.student-note {
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px dashed var(--bg-dark);
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
}

/* 喊话区域 */
.voice-shout-section {
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px dashed var(--bg-dark);
}

.voice-shout-list {
    margin-bottom: 0.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
}

.voice-shout-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    margin-bottom: 0;
    font-size: 0.8rem;
}

.play-voice-btn {
    background: var(--secondary);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: white;
    transition: all 0.2s;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

.play-voice-btn:hover {
    background: var(--primary);
    transform: scale(1.2);
    box-shadow: 0 4px 14px rgba(0,0,0,0.35);
}

.play-voice-btn.playing {
    background: var(--primary);
}

.del-voice-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
    padding: 2px 4px;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.del-voice-btn:hover {
    opacity: 1;
}

.voice-shout-from {
    color: var(--secondary);
    font-weight: 500;
    white-space: nowrap;
}

.voice-shout-btn {
    width: 100%;
    padding: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--bg-dark);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.voice-shout-btn:hover {
    background: var(--secondary);
    color: white;
    border-color: var(--secondary);
}

/* 编辑按钮 */
.edit-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.3s ease;
    opacity: 0;
}

.student-card:hover .edit-btn {
    opacity: 1;
}

.edit-btn:hover {
    background: var(--secondary);
    color: white;
}

/* ==================== 留言板页面 ==================== */
.message-input-box {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    overflow-x: hidden;
}

.input-row {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.3rem;
}

.input-group input,
.input-group textarea {
    padding: 0.8rem 1rem;
    border: 2px solid var(--bg-dark);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg);
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    background: var(--card-bg);
}

.input-group textarea {
    min-height: 120px;
    resize: vertical;
}

.char-count {
    text-align: right;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.3rem;
}

.submit-btn {
    background: linear-gradient(135deg, var(--secondary), #c0392b);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(231, 76, 60, 0.3);
}

/* 留言列表 */
.message-board {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.message-board .message-list {
    display: grid;
    gap: 1.5rem;
}

.message-board .message-item {
    background: var(--bg);
    border-radius: 16px;
    padding: 1.5rem;
    border-left: none;
    position: relative;
}

.message-board .message-item::before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 15px;
    font-size: 4rem;
    color: var(--secondary);
    opacity: 0.1;
    font-family: Georgia, serif;
    line-height: 1;
}

.message-board .message-nickname {
    display: inline-block;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.message-board .message-content {
    padding-left: 0.5rem;
}

.empty-message {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
}

/* 语音留言播放器 */
.voice-message-player {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.1), rgba(231, 76, 60, 0.05));
    border-radius: 30px;
    width: fit-content;
    margin: 0.5rem 0;
}

/* 喊话中的小版本播放器 */
.voice-message-player.small {
    padding: 0.3rem 0.5rem;
    gap: 0.3rem;
    margin: 0;
}

.voice-message-player.small .voice-play-btn {
    width: 24px;
    height: 24px;
    font-size: 0.6rem;
    box-shadow: 0 2px 5px rgba(231, 76, 60, 0.3);
}

.voice-play-btn {
    background: linear-gradient(135deg, #e74c3c, #ec7063);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    transition: all 0.3s;
    box-shadow: 0 3px 10px rgba(231, 76, 60, 0.3);
}

.voice-play-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
}

.voice-play-btn.playing {
    animation: voicePulse 1s infinite;
}

@keyframes voicePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.voice-wave {
    display: flex;
    align-items: center;
    gap: 3px;
    height: 20px;
}

.voice-wave span {
    width: 3px;
    background: linear-gradient(to top, #e74c3c, #ec7063);
    border-radius: 2px;
    animation: wave 0.8s ease-in-out infinite;
}

.voice-wave span:nth-child(1) { height: 8px; animation-delay: 0s; }
.voice-wave span:nth-child(2) { height: 12px; animation-delay: 0.1s; }
.voice-wave span:nth-child(3) { height: 16px; animation-delay: 0.2s; }
.voice-wave span:nth-child(4) { height: 12px; animation-delay: 0.3s; }
.voice-wave span:nth-child(5) { height: 8px; animation-delay: 0.4s; }

@keyframes wave {
    0%, 100% { transform: scaleY(0.5); }
    50% { transform: scaleY(1); }
}

.voice-duration {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* 语音录制按钮 */
.voice-record-btn {
    background: linear-gradient(135deg, #e74c3c, #ec7063);
    border: none;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    color: white;
    font-size: 1.5rem;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(231, 76, 60, 0.4);
}

.voice-record-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(231, 76, 60, 0.5);
}

.voice-record-btn:active {
    transform: scale(0.95);
}

.voice-record-text {
    font-size: 0.7rem;
}

/* ==================== 相册页面 ==================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
}

.gallery-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    aspect-ratio: 1;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: white;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* 媒体点赞按钮 */
.like-media-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
    border: none;
    border-radius: 20px;
    padding: 0.4rem 0.7rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: white;
    font-size: 0.8rem;
    transition: all 0.2s;
    z-index: 10;
}

.like-media-btn.top-left {
    left: 10px;
    right: auto;
}

.like-media-btn.top-right {
    left: auto;
    right: 10px;
}

.like-media-btn:hover {
    background: rgba(231, 76, 60, 0.8);
    transform: scale(1.1);
}

.like-media-btn.liked {
    background: #e74c3c;
}

.like-media-btn.liked .like-icon {
    animation: likeAnimation 0.3s ease;
}

.like-media-btn .like-icon {
    font-size: 0.9rem;
}

/* 上传区域 */
.upload-zone {
    border: 2px dashed var(--bg-dark);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
    transition: all 0.3s ease;
    margin-bottom: 2rem;
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--secondary);
    background: rgba(231, 76, 60, 0.05);
}

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

.upload-zone-text {
    color: var(--text-light);
}

/* 灯箱 */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 8px;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lightbox-close:hover {
    background: var(--secondary);
}

/* ==================== 视频页面 ==================== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.video-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.video-placeholder {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--primary), #34495e);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
}

.video-placeholder::before {
    content: '▶';
    font-size: 3rem;
    color: white;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.video-placeholder:hover::before {
    opacity: 1;
    transform: scale(1.2);
}

.video-play-icon {
    font-size: 4rem;
    color: white;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.video-placeholder:hover .video-play-icon {
    opacity: 1;
    transform: scale(1.2);
}

.video-info {
    padding: 1.5rem;
}

.video-title {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.video-link {
    color: var(--secondary);
    font-size: 0.9rem;
    text-decoration: none;
    word-break: break-all;
}

/* 视频模态框 */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.video-modal.active {
    opacity: 1;
    visibility: visible;
}

.video-modal-content {
    width: 90%;
    max-width: 1000px;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}

.video-modal-content iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.video-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-modal-close:hover {
    background: var(--secondary);
}

/* 添加视频表单 */
.add-video-form {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.add-video-form .input-group {
    margin-bottom: 1rem;
}

.add-video-form input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--bg-dark);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
}

.add-video-form input:focus {
    outline: none;
    border-color: var(--secondary);
}

/* ==================== 关于页面 ==================== */
.about-content {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow);
    max-width: 800px;
    margin: 0 auto;
}

.about-section {
    margin-bottom: 2.5rem;
}

.about-section:last-child {
    margin-bottom: 0;
}

.about-section h3 {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.about-section p {
    color: var(--text);
    line-height: 1.8;
}

.about-footer {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--bg-dark);
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ==================== 模态框 ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1500;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    max-width: 450px;
    width: 90%;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.5rem;
    color: var(--primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: var(--secondary);
}

/* 验证表单 */
.verify-form .input-group {
    margin-bottom: 1rem;
}

.verify-form .remember-login {
    margin: 0.5rem 0;
    text-align: center;
}

.verify-form .remember-login label {
    font-size: 0.9rem;
    color: var(--text-light);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.verify-form input[type="text"],
.verify-form input[type="password"],
.verify-form input[type="url"],
.verify-form input[type="email"],
.verify-form input[type="tel"],
.verify-form input[type="number"] {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--bg-dark);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.verify-form input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.verify-form input:focus {
    outline: none;
    border-color: var(--secondary);
}

.verify-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--secondary), #c0392b);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 0.5rem;
}

.verify-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(231, 76, 60, 0.3);
}

.verify-error {
    color: var(--secondary);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    text-align: center;
}

/* 编辑表单 */
.edit-form .input-group {
    margin-bottom: 1rem;
}

.edit-form label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.3rem;
}

.edit-form input,
.edit-form textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--bg-dark);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg);
}

.edit-form input:focus,
.edit-form textarea:focus {
    outline: none;
    border-color: var(--secondary);
    background: var(--card-bg);
}

.edit-form textarea {
    min-height: 80px;
    resize: vertical;
}

.edit-form select {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--bg-dark);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

/* ==================== 底部标签栏（微信小程序风格） ==================== */
.bottom-tab-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--card-bg);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 8px 0;
    padding-bottom: calc(8px + env(safe-area-inset-bottom, 0));
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-light);
    padding: 4px 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
    min-width: 50px;
}

.tab-item:active {
    transform: scale(0.95);
}

.tab-icon {
    font-size: 1.4rem;
    margin-bottom: 2px;
    transition: transform 0.3s ease;
}

.tab-label {
    font-size: 0.65rem;
    font-weight: 500;
}

.tab-badge {
    position: absolute;
    top: 2px;
    right: 8px;
    background: var(--secondary);
    color: white;
    font-size: 0.6rem;
    min-width: 16px;
    height: 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.tab-item {
    position: relative;
}

.tab-item.active {
    color: var(--secondary);
}

.tab-item.active .tab-icon {
    transform: scale(1.1);
}

/* 活跃标签动效 */
.tab-item.active::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--secondary);
    border-radius: 0 0 3px 3px;
}

/* ==================== 导航栏右侧 ==================== */
.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-login {
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.user-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.user-logged {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--primary);
    font-size: 0.8rem;
}

.user-logged .user-name {
    font-weight: 600;
    color: var(--secondary);
}

.user-logout {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.8rem;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.user-logout:hover {
    background: var(--bg);
    color: var(--secondary);
}

/* 统计卡片链接 */
.stat-link {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* ==================== 中国地图 ==================== */
.china-map {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.map-svg {
    width: 100%;
    max-width: 600px;
    height: auto;
    margin: 0 auto;
    display: block;
}

.map-outline {
    fill: #e9ecef;
    stroke: #adb5bd;
    stroke-width: 0.3;
}

.map-dot {
    fill: var(--secondary);
    opacity: 0.8;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: pulse-dot 2s infinite;
}

.map-dot:hover {
    opacity: 1;
    r: 4;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 0.6; }
}

.map-legend {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-light);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--secondary);
}

/* 头像样式 */
.student-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.8rem;
    color: white;
    margin-bottom: 1rem;
    overflow: hidden;
}

.student-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-clickable {
    cursor: pointer;
}

.avatar-clickable:hover {
    opacity: 0.9;
}

.avatar-upload {
    position: relative;
    cursor: pointer;
}

.avatar-upload::after {
    content: '📷';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 24px;
    height: 24px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    border: 2px solid white;
}

/* ==================== 响应式 ==================== */
@media (max-width: 992px) {
    .header-title {
        font-size: 1.5rem;
    }

    .main-content {
        padding-top: 70px;
    }

    /* 底部标签栏在小屏幕上调整 */
    .bottom-tab-bar {
        padding: 6px 0;
        padding-bottom: calc(6px + env(safe-area-inset-bottom, 0));
    }

    .tab-icon {
        font-size: 1.2rem;
    }

    .tab-label {
        font-size: 0.6rem;
    }
}

@media (max-width: 768px) {
    .message-input-box {
        padding: 1rem;
    }

    .message-input-box input,
    .message-input-box textarea {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    .hero-title {
        font-size: 2rem;
        letter-spacing: 4px;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .stat-card {
        padding: 1.2rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .input-row {
        grid-template-columns: 1fr;
    }

    .gallery-mini {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .student-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .modal {
        max-width: 95%;
        width: 95%;
        max-height: 80vh;
        overflow-y: auto;
        padding: 1rem;
        margin: 10px auto;
    }

    #editModal .modal,
    .edit-modal-content {
        max-width: 500px;
        max-height: 90vh;
        overflow-y: auto;
        padding-bottom: 80px;
    }

    .edit-form {
        padding-bottom: 100px;
    }

    .edit-form .verify-btn {
        position: sticky;
        bottom: 0;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--secondary), #c0392b);
        color: white;
        padding: 1rem;
        margin: 1rem -1rem -1rem;
        z-index: 10;
        border-radius: 10px;
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    }

    .modal-overlay {
        align-items: flex-start;
        padding-top: 80px;
        overflow-y: auto;
    }

    .page-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.4rem;
    }

    /* 手机端header优化 */
    .top-header {
        padding: 0 0.5rem;
    }

    .header-title {
        font-size: 1.3rem;
        letter-spacing: 1px;
    }

    .user-logged {
        gap: 0.2rem;
    }

    .user-name {
        max-width: 50px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .user-logout {
        padding: 0.15rem 0.3rem;
        font-size: 0.65rem;
    }

    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-year {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .header-title {
        font-size: 1.1rem;
    }

    .user-status {
        font-size: 0.7rem;
    }

    .user-login {
        padding: 0.25rem 0.5rem;
        font-size: 0.7rem;
    }

    .hero-title {
        font-size: 1.6rem;
        letter-spacing: 2px;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-icon {
        font-size: 1.8rem;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }

    .gallery-mini {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .recent-messages {
        padding: 1.5rem;
    }

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

    .modal {
        width: 98%;
        max-height: 75vh;
        padding: 0.8rem;
    }

    .edit-modal-content,
    #editModal .modal {
        max-height: 80vh;
    }

    .edit-form .verify-btn {
        position: sticky;
        bottom: 0;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--secondary), #c0392b);
        color: white;
        padding: 1rem;
        margin: 1rem -1rem -1rem;
        z-index: 10;
        border-radius: 10px;
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    }

    .edit-modal-content {
        padding-bottom: 80px;
    }
}

    .user-logout {
        padding: 0.15rem 0.3rem;
        font-size: 0.7rem;
    }
}

/* ==================== 动画 ==================== */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 1.5s infinite;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in {
    animation: slideIn 0.5s ease forwards;
}

/* ==================== 首页新样式 ==================== */
.gallery-mini {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.gallery-mini-item {
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1;
    transition: all 0.3s ease;
}

.gallery-mini-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.gallery-mini-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 学生卡片个性化展示 */
.student-custom-intro {
    font-style: italic;
    color: var(--secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    background: rgba(231, 76, 60, 0.05);
    border-radius: 8px;
    text-align: center;
}

/* 最新动态样式 */
.activity-message {
    border-left-color: var(--secondary) !important;
}

.activity-photo {
    border-left-color: var(--accent) !important;
}

.activity-message .message-content::before {
    content: '📝 ';
}

.activity-photo .message-content::before {
    content: '📷 ';
}

/* ==================== 最新动态滚动 ==================== */
.activity-carousel {
    position: relative;
}

.carousel-viewport {
    display: flex;
    overflow-x: auto;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 0.75rem;
    padding-bottom: 0.75rem;
    padding: 0.5rem;
}

.carousel-viewport::-webkit-scrollbar {
    height: 3px;
}

.carousel-viewport::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    border-radius: 2px;
}

.carousel-item {
    flex: 0 0 calc(33.333% - 0.5rem);
    min-width: calc(33.333% - 0.5rem);
    scroll-snap-align: start;
    overflow-x: hidden;
    box-sizing: border-box;
}

/* 最新动态类型样式 */
.carousel-item {
    position: relative;
    perspective: 1000px;
}

.carousel-item-inner {
    background: linear-gradient(145deg, var(--card-bg), rgba(255,255,255,0.05));
    border-radius: 16px;
    padding: 1.2rem;
    box-shadow:
        0 4px 15px rgba(0,0,0,0.1),
        0 1px 3px rgba(0,0,0,0.08),
        inset 0 1px 0 rgba(255,255,255,0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    position: relative;
    overflow: hidden;
    overflow-x: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid rgba(255,255,255,0.08);
    box-sizing: border-box;
}

.carousel-item-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s;
}

.carousel-item:hover .carousel-item-inner::before {
    opacity: 1;
}

.carousel-item:hover .carousel-item-inner {
    transform: translateY(-3px);
    box-shadow:
        0 8px 25px rgba(0,0,0,0.15),
        0 3px 10px rgba(0,0,0,0.1),
        inset 0 1px 0 rgba(255,255,255,0.15);
}

/* 顶部装饰线 */
.carousel-item[data-type="profile_update"] .carousel-item-inner::before {
    background: linear-gradient(90deg, #3498db, #5dade2);
}
.carousel-item[data-type="message"] .carousel-item-inner::before {
    background: linear-gradient(90deg, #2ecc71, #58d68d);
}
.carousel-item[data-type="photo"] .carousel-item-inner::before {
    background: linear-gradient(90deg, #e67e22, #f39c12);
}
.carousel-item[data-type="video"] .carousel-item-inner::before {
    background: linear-gradient(90deg, #9b59b6, #af7ac5);
}
.carousel-item[data-type="voice_shout"] .carousel-item-inner::before {
    background: linear-gradient(90deg, #e74c3c, #ec7063);
}

/* 左侧色条 */
.carousel-item[data-type="profile_update"] .carousel-item-inner { border-left: 3px solid #3498db; }
.carousel-item[data-type="message"] .carousel-item-inner { border-left: 3px solid #2ecc71; }
.carousel-item[data-type="photo"] .carousel-item-inner { border-left: 3px solid #e67e22; }
.carousel-item[data-type="video"] .carousel-item-inner { border-left: 3px solid #9b59b6; }
.carousel-item[data-type="voice_shout"] .carousel-item-inner { border-left: 3px solid #e74c3c; }

/* 类型标签样式 */
.type-tag {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.carousel-item[data-type="profile_update"] .type-tag {
    color: #fff;
    background: linear-gradient(135deg, #3498db, #5dade2);
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.4);
}
.carousel-item[data-type="message"] .type-tag {
    color: #fff;
    background: linear-gradient(135deg, #2ecc71, #58d68d);
    box-shadow: 0 2px 8px rgba(46, 204, 113, 0.4);
}
.carousel-item[data-type="photo"] .type-tag {
    color: #fff;
    background: linear-gradient(135deg, #e67e22, #f39c12);
    box-shadow: 0 2px 8px rgba(230, 126, 34, 0.4);
}
.carousel-item[data-type="video"] .type-tag {
    color: #fff;
    background: linear-gradient(135deg, #9b59b6, #af7ac5);
    box-shadow: 0 2px 8px rgba(155, 89, 182, 0.4);
}
.carousel-item[data-type="voice_shout"] .type-tag {
    color: #fff;
    background: linear-gradient(135deg, #e74c3c, #ec7063);
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.4);
}

.carousel-actor {
    font-weight: 700;
    font-size: 1rem;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.3px;
}

.carousel-content {
    color: var(--text);
    font-size: 0.9rem;
    flex: 1;
    line-height: 1.5;
    opacity: 0.85;
    overflow-wrap: break-word;
    word-break: break-word;
    overflow-x: hidden;
}

.carousel-time {
    color: var(--text-light);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    display: inline-block;
    background: rgba(0,0,0,0.05);
    border: 1px solid rgba(0,0,0,0.05);
    letter-spacing: 0.3px;
}

.carousel-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.carousel-btn {
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0,0,0,0.2);
}

.carousel-btn:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.carousel-dots {
    display: flex;
    gap: 10px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(0,0,0,0.1);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.carousel-dot:hover {
    background: var(--text-light);
    transform: scale(1.1);
}

.carousel-dot.active {
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    transform: scale(1.2);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
    .carousel-item {
        flex: 0 0 calc(50% - 0.375rem);
        min-width: calc(50% - 0.375rem);
    }
}

@media (max-width: 480px) {
    .carousel-item {
        flex: 0 0 calc(100% - 0.5rem);
        min-width: calc(100% - 0.5rem);
        scroll-snap-align: center;
    }
}

/* ==================== 个人中心页面 ==================== */
.profile-unlogged {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.profile-avatar-large {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 3rem;
}

.profile-welcome {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.profile-desc {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.profile-login-btn {
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: white;
    border: none;
    padding: 1rem 3rem;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.profile-login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(231, 76, 60, 0.3);
}

.profile-logged {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.profile-card {
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.profile-card-header {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary), #34495e);
    color: white;
}

.profile-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.8rem;
    color: white;
    margin-right: 1rem;
    overflow: hidden;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
}

.profile-id {
    font-size: 0.85rem;
    opacity: 0.8;
}

.profile-edit-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.profile-edit-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.profile-card-body {
    padding: 1.5rem;
}

.profile-intro {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.profile-intro-label {
    font-size: 0.8rem;
    color: var(--text-light);
}

.profile-intro-text {
    color: var(--text);
    font-style: italic;
}

.profile-detail-card {
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 1.5rem;
}

.profile-detail-title {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.profile-detail-list {
    display: grid;
    gap: 0.8rem;
}

.profile-detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.8rem;
    background: var(--bg);
    border-radius: 10px;
}

.detail-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

.detail-value {
    color: var(--text);
    font-weight: 500;
}

.profile-hobby-list {
    background: var(--bg);
    padding: 1rem;
    border-radius: 10px;
    color: var(--text);
}

.profile-logout-btn {
    background: var(--bg);
    color: var(--secondary);
    border: 2px solid var(--secondary);
    padding: 1rem;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.profile-logout-btn:hover {
    background: var(--secondary);
    color: white;
}

/* ==================== 媒体中心页面 ==================== */
.media-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    background: var(--card-bg);
    padding: 0.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.media-tab {
    flex: 1;
    padding: 0.8rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-light);
    font-size: 0.95rem;
    cursor: pointer;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.media-tab.active {
    background: var(--secondary);
    color: white;
}

.media-tab:hover:not(.active) {
    background: var(--bg);
}

/* 新闻列表样式 */
.news-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
    padding: 1.5rem 0;
}

.news-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, rgba(30, 30, 50, 0.95) 0%, rgba(20, 20, 40, 0.98) 100%);
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(100, 180, 255, 0.15);
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #00d4ff, #7b2dff, #00d4ff);
    background-size: 200% 100%;
    animation: news-gradient-flow 3s linear infinite;
    opacity: 0;
    transition: opacity 0.3s;
}

.news-card:hover::before {
    opacity: 1;
}

@keyframes news-gradient-flow {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.news-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 30px rgba(0, 212, 255, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.news-card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(0, 212, 255, 0.08) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

.news-card:hover .news-card-glow {
    opacity: 1;
}

.news-image {
    position: relative;
    width: 100%;
    height: 160px;
    overflow: hidden;
}

.news-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(0, 212, 255, 0.2) 0%,
        rgba(123, 45, 255, 0.12) 50%,
        rgba(0, 212, 255, 0.2) 100%
    );
    z-index: 1;
    pointer-events: none;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    position: relative;
    z-index: 0;
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        transparent 50%,
        rgba(20, 20, 50, 0.3) 80%,
        rgba(20, 20, 50, 0.5) 100%
    );
    z-index: 2;
}

.news-content {
    flex: 1;
    padding: 1.2rem;
    position: relative;
    z-index: 1;
}

.news-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.8rem;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(123, 45, 255, 0.2) 100%);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    font-size: 0.7rem;
    color: #00d4ff;
    margin-bottom: 0.8rem;
    width: fit-content;
}

.news-tag-icon {
    font-size: 0.75rem;
}

.news-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.6rem;
    line-height: 1.5;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    word-break: break-word;
}

.news-desc {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.6;
    margin-bottom: 1rem;
    word-break: break-word;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.8rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.news-time,
.news-source {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
}

.news-time-icon,
.news-source-icon {
    font-size: 0.8rem;
    opacity: 0.7;
}

.news-arrow {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%) translateX(0);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.3) 0%, rgba(123, 45, 255, 0.3) 100%);
    border-radius: 50%;
    opacity: 0;
    transition: all 0.3s;
}

.news-arrow span {
    color: #00d4ff;
    font-size: 1.2rem;
    transition: transform 0.3s;
}

.news-card:hover .news-arrow {
    opacity: 1;
    transform: translateY(-50%) translateX(5px);
}

.news-card:hover .news-arrow span {
    transform: translateX(3px);
}

/* 响应式调整 */
@media (max-width: 480px) {
    .news-list {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1rem;
    }

    .news-image {
        height: 140px;
    }

    .news-content {
        padding: 1rem;
    }

    .news-arrow {
        display: none;
    }
}

/* Hash导航高亮效果 */
.highlight {
    animation: highlight-pulse 2s ease-out;
}

@keyframes highlight-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.4);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(231, 76, 60, 0.2);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0);
    }
}

/* 留言板消息项锚点 */
.message-item[id] {
    scroll-margin-top: 80px;
}

/* 学生卡片锚点 */
.student-card[id] {
    scroll-margin-top: 80px;
}

/* 删除按钮样式 */
.delete-msg-btn {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0.5rem;
    margin-top: 0.5rem;
    transition: color 0.2s;
}

.delete-msg-btn:hover {
    color: var(--secondary);
}

.delete-photo-btn,
.delete-video-btn {
    position: absolute;
    top: 50px;
    right: 10px;
    background: rgba(0, 0, 0, 0.6);
    border: none;
    color: white;
    border-radius: 8px;
    width: 32px;
    height: 32px;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 50;
}

.delete-photo-btn:hover,
.delete-video-btn:hover {
    background: #c0392b;
    transform: scale(1.1);
}

.download-btn {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(255, 255, 255, 0.2) !important;
    backdrop-filter: blur(4px);
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    color: rgba(255, 255, 255, 0.85);
    border-radius: 6px;
    width: 28px;
    height: 28px;
    cursor: pointer;
    font-size: 11px;
    font-weight: normal;
    line-height: 1;
    display: flex !important;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 100;
    text-decoration: none;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.4) !important;
    color: white;
}

/* ==================== 上传进度条 ==================== */
.upload-progress {
    background: var(--bg-dark);
    border-radius: 8px;
    padding: 8px 12px;
    position: relative;
    overflow: hidden;
}

.upload-progress-bar {
    height: 6px;
    background: linear-gradient(90deg, var(--secondary), #f39c12);
    border-radius: 3px;
    transition: width 0.2s ease;
}

.upload-progress-text {
    display: block;
    margin-top: 4px;
    font-size: 0.75rem;
    color: var(--text-light);
}

.upload-progress.upload-error {
    background: #fdeaea;
}

.upload-progress.upload-error .upload-progress-bar {
    background: #e74c3c;
}

.upload-progress.upload-error .upload-progress-text {
    color: #e74c3c;
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    right: 20px;
    bottom: 100px;
    width: 44px;
    height: 44px;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #c0392b;
    transform: scale(1.1);
}

/* ==================== 页面底部提示 ==================== */
.page-end-message {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-light);
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.3s;
}

.page-end-message.visible {
    opacity: 1;
}

/* ==================== 通知系统 ==================== */
.notification-container {
    position: relative;
    margin-left: auto;
    flex-shrink: 0;
    max-height: 60px;
}

.notification-bell {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    position: relative;
    font-size: 1.2rem;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.notification-bell:hover {
    opacity: 1;
}

.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--secondary);
    color: white;
    font-size: 0.65rem;
    min-width: 16px;
    height: 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.notification-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    width: 300px;
    max-height: 350px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 1001;
}

.notification-dropdown.active {
    display: flex;
}

.notification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--bg-dark);
    font-weight: 600;
    font-size: 0.9rem;
}

.notification-mark-read {
    background: none;
    border: none;
    color: var(--secondary);
    font-size: 0.75rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.notification-mark-read:hover {
    background: rgba(231, 76, 60, 0.1);
}

.notification-list {
    flex: 1;
    overflow-y: auto;
    max-height: 340px;
}

.notification-list-about {
    max-height: 300px;
    overflow-y: auto;
}

.notification-empty {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    font-size: 0.85rem;
}

.notification-item {
    display: flex;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    cursor: pointer;
    transition: background 0.2s;
    position: relative;
}

.notification-item:hover {
    background: rgba(0, 0, 0, 0.03);
}

.notification-item.unread {
    background: rgba(231, 76, 60, 0.05);
}

.notification-item.unread::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--secondary);
}

.notification-item-content {
    flex: 1;
}

.notification-item-text {
    font-size: 0.85rem;
    color: var(--text);
    line-height: 1.4;
    margin-bottom: 0.25rem;
}

.notification-item-time {
    font-size: 0.7rem;
    color: var(--text-light);
}

.notification-item-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.75rem;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.notification-type-comment { background: rgba(52, 152, 219, 0.15); }
.notification-type-like { background: rgba(231, 76, 60, 0.15); }
.notification-type-voice_shout { background: rgba(155, 89, 182, 0.15); }