/* 移动端样式 - 现代化设计 */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 -1px 20px rgba(0,0,0,0.08);
    z-index: 1000;
    padding: 6px 0;
    padding-bottom: calc(6px + env(safe-area-inset-bottom));
    border-top: 1px solid rgba(0,0,0,0.05);
}
.mobile-nav ul { display: flex; justify-content: space-around; list-style: none; margin: 0; padding: 0; }
.mobile-nav li { flex: 1; }
.mobile-nav a { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    color: #999; 
    text-decoration: none; 
    font-size: 0.65rem; 
    padding: 6px 0;
    transition: all 0.2s ease;
}
.mobile-nav a i { 
    font-size: 1.3rem; 
    margin-bottom: 3px;
    transition: transform 0.2s ease;
}
.mobile-nav a.active { color: #6366f1; }
.mobile-nav a.active i { transform: scale(1.1); }
.mobile-nav a span { font-weight: 500; }

@media (max-width: 768px) {
    body { padding-bottom: 70px; }
    .mobile-nav { display: block; }
    .navbar .navbar-nav.me-auto { display: none !important; }
    .container { padding: 0 15px; }
    .hero-section { padding: 2rem 1rem; border-radius: 16px; }
    .hero-section h1 { font-size: 1.5rem; }
    .card { border-radius: 12px; margin-bottom: 12px; border: none; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
    .sidebar { display: none !important; }
    .col-md-9 { width: 100% !important; }
    .stat-card { padding: 1rem; }
    .stat-card .number { font-size: 1.5rem; }
    .btn { padding: 0.5rem 1rem; font-size: 0.9rem; border-radius: 8px; }
    .form-control, .form-select { font-size: 16px; border-radius: 8px; }
    .d-mobile-none { display: none !important; }
    footer { display: none !important; }
    .list-group-item { border-left: 0; border-right: 0; }
    .list-group-item:first-child { border-top: 0; border-radius: 12px 12px 0 0; }
    .list-group-item:last-child { border-bottom: 0; border-radius: 0 0 12px 12px; }
}