* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #f78f4a;
    --text-color: #1e1e2a;
    --bg-color: #f8f9fa;
    --card-bg: rgba(255, 255, 255, 0.8);
    --nav-bg: rgba(255, 255, 255, 0.7);
    --footer-bg: rgba(255, 255, 255, 0.7);
    --footer-text: #1e1e2a;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

.dark-theme {
    --primary-color: #f78f4a;
    --text-color: #f8f9fa;
    --bg-color: #121212;
    --card-bg: rgba(30, 30, 42, 0.8);
    --nav-bg: rgba(30, 30, 42, 0.7);
    --footer-bg: #0a0a0a;
    --footer-text: #e4e4e4;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: var(--transition);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* 毛玻璃导航栏 */
.navbar {
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 15px;
    border-radius: 5px;
}

.nav-links a:hover {
    background-color: var(--primary-color);
    color: white;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-color);
    transition: var(--transition);
}

/* 主内容区 */
.container {
    flex: 1;
    padding: 30px 5%;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.dashboard-header {
    margin-bottom: 30px;
    text-align: center;
}

.dashboard-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.dashboard-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

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

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.stat-title {
    font-size: 1.1rem;
    opacity: 0.9;
}

.update-info {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* 页脚 */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 20px 5% 10px;
    transition: var(--transition);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-links a {
    display: block;
    color: var(--footer-text);
    text-decoration: none;
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.contact-info {
    margin-bottom: 15px;
}

.contact-info div {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--footer-text);
    font-size: 1.2rem;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }

    .dashboard-header h1 {
        font-size: 2rem;
    }

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