/* ========================================
   个人主页 - 完整样式表
   ======================================== */

/* 基础变量 */
:root {
    --primary: #667eea;
    --primary-dark: #5a6fd6;
    --secondary: #764ba2;
    --accent: #f093fb;
    --success: #48bb78;
    --danger: #f56565;
    --warning: #ed8936;
    --info: #4299e1;
    --dark: #1a202c;
    --gray-900: #171923;
    --gray-800: #2d3748;
    --gray-700: #4a5568;
    --gray-600: #718096;
    --gray-500: #a0aec0;
    --gray-400: #cbd5e0;
    --gray-300: #e2e8f0;
    --gray-200: #edf2f7;
    --gray-100: #f7fafc;
    --white: #ffffff;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

/* 重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-100);
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

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

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    padding: 0 20px;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
}

.logo i {
    color: var(--primary);
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--gray-700);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-700);
}

/* ========================================
   Hero区域
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    position: relative;
    overflow: hidden;
    padding: 80px 20px 40px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
}

.hero-avatar {
    margin-bottom: 24px;
}

.avatar-placeholder {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.avatar-placeholder i {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.8);
}

.avatar-placeholder.large {
    width: 150px;
    height: 150px;
}

.avatar-placeholder.large i {
    font-size: 4rem;
}

.hero-avatar img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.hero-name {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-title {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 16px;
}

.hero-text {
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ========================================
   按钮
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    color: var(--white);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

.btn-info {
    background: var(--info);
    color: var(--white);
}

.btn-info:hover {
    background: #3182ce;
    color: var(--white);
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

.btn-danger:hover {
    background: #e53e3e;
    color: var(--white);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ========================================
   通用Section
   ======================================== */
.section {
    padding: 80px 20px;
}

.section-dark {
    background: var(--gray-800);
    color: var(--white);
}

.section-light {
    background: var(--white);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--dark);
}

.section-dark .section-title {
    color: var(--white);
}

.section-title i {
    margin-right: 8px;
    color: var(--primary);
}

.section-subtitle {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 48px;
}

.section-dark .section-subtitle {
    color: var(--gray-400);
}

/* ========================================
   关于我
   ======================================== */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--gray-700);
    margin-bottom: 32px;
}

.about-info {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-600);
}

.info-item i {
    color: var(--primary);
    font-size: 1.2rem;
}

/* ========================================
   视频展示
   ======================================== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.video-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.section-dark .video-card {
    background: var(--gray-700);
}

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

.video-wrapper {
    position: relative;
    padding-top: 56.25%;
    background: var(--gray-900);
}

.video-wrapper video,
.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-info {
    padding: 20px;
}

.video-info h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--dark);
}

.section-dark .video-info h3 {
    color: var(--white);
}

.video-info p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

.section-dark .video-info p {
    color: var(--gray-400);
}

/* ========================================
   联系方式
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 24px;
    max-width: 800px;
    margin: 0 auto 40px;
}

.contact-card {
    text-align: center;
    padding: 32px 20px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.contact-card i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.contact-card h3 {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.contact-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.social-links a {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-700);
    font-size: 1.3rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--dark);
    color: var(--gray-400);
    text-align: center;
    padding: 24px 20px;
}

.footer-admin {
    margin-top: 8px;
    font-size: 0.85rem;
}

.footer-admin a {
    color: var(--gray-500);
}

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

/* ========================================
   简历页面
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    text-align: center;
    padding: 120px 20px 60px;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.page-header h1 i {
    margin-right: 12px;
}

.page-header p {
    opacity: 0.8;
    font-size: 1.1rem;
}

/* 个人信息摘要 */
.profile-summary {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.profile-avatar img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
}

.profile-details h2 {
    font-size: 1.8rem;
    color: var(--dark);
    margin-bottom: 4px;
}

.profile-title {
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.profile-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.profile-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--gray-600);
    font-size: 0.9rem;
}

.profile-meta i {
    color: var(--primary);
}

.profile-summary-text {
    color: var(--gray-700);
    line-height: 1.8;
}

/* 时间线 */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-300);
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
}

.timeline-dot {
    position: absolute;
    left: -33px;
    top: 8px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--primary);
}

.timeline-content {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.timeline-date {
    display: inline-block;
    background: var(--gray-100);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: 4px;
}

.timeline-content h4 {
    font-size: 0.95rem;
    color: var(--gray-600);
    font-weight: 500;
    margin-bottom: 12px;
}

.timeline-content p {
    color: var(--gray-700);
    line-height: 1.7;
}

/* 技能网格 */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.skill-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.skill-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.skill-header h3 {
    font-size: 1rem;
    color: var(--dark);
}

.skill-level {
    background: var(--primary);
    color: var(--white);
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.skill-card p {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.skill-bar {
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
    transition: width 1s ease;
}

/* ========================================
   空状态
   ======================================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-500);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* ========================================
   登录页面
   ======================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-xl);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.login-header h1 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 4px;
}

.login-header p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

.login-footer a {
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* ========================================
   后台管理布局
   ======================================== */
.admin-page {
    background: var(--gray-100);
}

.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.admin-sidebar {
    width: 260px;
    background: var(--dark);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px 24px;
    font-size: 1.2rem;
    font-weight: 700;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-header i {
    color: var(--primary);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 0;
    overflow-y: auto;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--gray-400);
    transition: var(--transition);
    font-size: 0.95rem;
}

.sidebar-nav a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--white);
}

.sidebar-nav a.active {
    background: rgba(102, 126, 234, 0.2);
    color: var(--primary);
    border-right: 3px solid var(--primary);
}

.sidebar-nav a i {
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 24px;
    color: var(--gray-500);
    font-size: 0.9rem;
    transition: var(--transition);
}

.sidebar-footer a:hover {
    color: var(--white);
}

/* 主内容区 */
.admin-main {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.admin-content {
    padding: 32px;
}

.page-header-admin {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-header-admin h1 {
    font-size: 1.5rem;
    color: var(--dark);
}

.page-header-admin h1 i {
    color: var(--primary);
    margin-right: 8px;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
}

.stat-icon.blue { background: linear-gradient(135deg, #667eea, #764ba2); }
.stat-icon.green { background: linear-gradient(135deg, #48bb78, #38a169); }
.stat-icon.orange { background: linear-gradient(135deg, #ed8936, #dd6b20); }
.stat-icon.purple { background: linear-gradient(135deg, #9f7aea, #805ad5); }

.stat-info h3 {
    font-size: 1.8rem;
    color: var(--dark);
    line-height: 1;
}

.stat-info p {
    color: var(--gray-600);
    font-size: 0.85rem;
    margin-top: 4px;
}

/* 快捷操作 */
.admin-sections {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 24px;
}

.admin-section {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.admin-section h2 {
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.admin-section h2 i {
    color: var(--primary);
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.quick-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: var(--gray-100);
    border-radius: var(--radius);
    color: var(--gray-700);
    transition: var(--transition);
}

.quick-btn:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.quick-btn i {
    font-size: 1.2rem;
}

/* 信息表格 */
.info-table table {
    width: 100%;
    border-collapse: collapse;
}

.info-table td {
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-200);
}

.info-table td:first-child {
    color: var(--gray-600);
    width: 40%;
}

.info-table td:last-child {
    color: var(--dark);
    font-weight: 500;
}

/* ========================================
   后台表单
   ======================================== */
.form-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    max-width: 800px;
}

.form-card h2 {
    font-size: 1.3rem;
    color: var(--dark);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-200);
}

.form-card h3 {
    font-size: 1.1rem;
    color: var(--dark);
    margin: 24px 0 16px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
}

.form-card h3:first-of-type {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
    font-size: 0.9rem;
}

.form-group label i {
    margin-right: 4px;
    color: var(--primary);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="url"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: var(--font-family);
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.form-group small {
    display: block;
    color: var(--gray-500);
    font-size: 0.8rem;
    margin-top: 4px;
}

.form-group input[type="file"] {
    padding: 8px 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

/* ========================================
   后台表格
   ======================================== */
.table-container {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th {
    background: var(--gray-100);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.9rem;
}

.admin-table tr:hover {
    background: var(--gray-50, #fafafa);
}

.admin-table .text-center {
    text-align: center;
    color: var(--gray-500);
}

.admin-table .actions {
    display: flex;
    gap: 8px;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-success {
    background: #c6f6d5;
    color: #276749;
}

.badge-secondary {
    background: var(--gray-200);
    color: var(--gray-600);
}

.badge-info {
    background: #bee3f8;
    color: #2c5282;
}

/* 筛选栏 */
.filter-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

/* 提示框 */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

.alert-success {
    background: #f0fff4;
    color: #276749;
    border: 1px solid #c6f6d5;
}

.alert-error {
    background: #fff5f5;
    color: #c53030;
    border: 1px solid #fed7d7;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow);
    }

    .nav-links.show {
        display: flex;
    }

    .nav-links a {
        padding: 12px 0;
    }

    .nav-toggle {
        display: block;
    }

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

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

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

    .profile-summary {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .profile-meta {
        justify-content: center;
    }

    .timeline {
        padding-left: 30px;
    }

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

    /* 后台响应 */
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.show {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

    .admin-content {
        padding: 16px;
    }

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

    .admin-sections {
        grid-template-columns: 1fr;
    }

    .quick-actions {
        grid-template-columns: 1fr;
    }

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

    .form-card {
        padding: 20px;
    }

    .page-header-admin {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

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

    .about-info {
        flex-direction: column;
        align-items: center;
    }
}

/* 当前头像 */
.current-avatar {
    margin-bottom: 10px;
}