/* 首页样式 */

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
}

.header {
    background: #2563eb;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo {
    width: 32px;
    height: 32px;
}

.header h1 {
    margin: 0;
    font-size: 20px;
    color: white;
    font-weight: 600;
}

.user-menu {
    position: relative;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 12px;
    transition: background 0.3s;
    color: white;
}

.user-info:hover {
    background: rgba(255, 255, 255, 0.1);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    min-width: 200px;
    display: none;
    z-index: 100;
}

.dropdown.show {
    display: block;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #1e293b;
}

.dropdown-item:hover {
    background: #f1f5f9;
}

.dropdown-item:first-child {
    border-radius: 12px 12px 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 12px 12px;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.nav-card {
    background: #2563eb;
    border-radius: 16px;
    padding: 32px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.2);
    text-decoration: none;
    color: white;
    display: block;
}

.nav-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.3);
    background: #1d4ed8;
}

.nav-card .icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.nav-card h3 {
    margin: 0 0 8px 0;
    font-size: 20px;
    color: white;
}

.nav-card p {
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
}

.welcome-section {
    background: #f8fafc;
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.welcome-section h2 {
    font-size: 36px;
    margin: 0 0 16px 0;
    color: #2563eb;
    font-weight: 700;
}

.welcome-section p {
    font-size: 18px;
    color: #64748b;
    margin: 0;
}

.footer {
    background: #f8fafc;
    padding: 24px 32px;
    text-align: center;
    color: #64748b;
    font-size: 13px;
    border-top: 1px solid #e2e8f0;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    margin-top: 8px;
}

.footer-links a {
    color: #2563eb;
    text-decoration: none;
    margin: 0 8px;
}

.footer-links a:hover {
    text-decoration: underline;
}

.version-tag {
    display: inline-block;
    background: #2563eb;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    cursor: pointer;
    margin-left: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.version-tag:hover {
    background: #1d4ed8;
    transform: scale(1.05);
}