/* ===== 全局样式 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: #333;
    line-height: 1.6;
    background: #fff;
}

/* 导航栏 */
#mainNav {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    transition: all 0.3s;
    z-index: 1050;
}
#mainNav.scrolled {
    background: rgba(26, 26, 46, 0.98);
    padding: 8px 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.navbar-brand {
    font-weight: 700;
    font-size: 1.3rem;
}
.navbar-brand i { color: #818cf8; }
.nav-link {
    font-weight: 500;
    padding: 8px 16px !important;
    transition: color 0.3s;
}
.nav-link:hover { color: #818cf8 !important; }

/* 按钮 */
.btn-primary {
    background: #4f46e5;
    border-color: #4f46e5;
}
.btn-primary:hover {
    background: #4338ca;
    border-color: #4338ca;
}
.btn-outline-primary {
    color: #4f46e5;
    border-color: #4f46e5;
}
.btn-outline-primary:hover {
    background: #4f46e5;
    border-color: #4f46e5;
    color: #fff;
}

/* 表格 */
.table th {
    background: #f8f9fa;
    font-weight: 600;
    white-space: nowrap;
}
.table td { vertical-align: middle; }

/* 面板卡片 */
.panel {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #f0f0f0;
}
.panel-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

/* 信息卡片 */
.info-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    display: flex;
    align-items: center;
    gap: 1rem;
}
.info-card .icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
}
.info-card .info h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}
.info-card .info p {
    margin: 0;
    color: #6c757d;
    font-size: 0.85rem;
}
.bg-primary-gradient { background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.bg-success-gradient { background: linear-gradient(135deg, #10b981, #059669); }
.bg-warning-gradient { background: linear-gradient(135deg, #f59e0b, #d97706); }
.bg-danger-gradient { background: linear-gradient(135deg, #ef4444, #dc2626); }
.bg-info-gradient { background: linear-gradient(135deg, #3b82f6, #2563eb); }

/* Badge */
.badge { font-weight: 500; padding: 5px 10px; }

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
}
.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    display: block;
    opacity: 0.5;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .section-padding { padding: 50px 0; }
}