/* ===== 响应式设计 ===== */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) {
    .dashboard-header {
        padding: 18px 30px;
    }
    
    .logo {
        font-size: 1.6rem;
    }
    
    .dashboard-content {
        padding: 40px 25px;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 25px;
        max-width: 900px;
    }
    
    .feature-button {
        min-height: 160px;
        padding: 25px 20px;
    }
    
    .feature-button .icon {
        font-size: 2.5rem;
        margin-bottom: 12px;
    }
    
    .feature-button .text {
        font-size: 1rem;
    }
}

/* 小屏设备 (480px - 768px) */
@media (max-width: 768px) {
    .dashboard-header {
        padding: 15px 20px;
        flex-direction: column;
        gap: 15px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .user-controls {
        gap: 10px;
    }
    
    .dashboard-content {
        padding: 30px 20px;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 20px;
    }
    
    .feature-button {
        min-height: 140px;
        padding: 20px 15px;
    }
    
    .feature-button .icon {
        font-size: 2.2rem;
        margin-bottom: 10px;
    }
    
    .feature-button .text {
        font-size: 0.95rem;
    }
    
    .dashboard-footer {
        padding: 25px 20px;
        font-size: 0.85rem;
    }
    
    /* 侧边栏适配 */
    .sidebar {
        width: 260px;
        left: -280px;
    }
    
    .sidebar-trigger {
        width: 18px;
        height: 80px;
    }
    
    .sidebar-trigger:hover {
        width: 22px;
    }
}

/* 手机设备 (480px 以下) */
@media (max-width: 480px) {
    .dashboard-header {
        padding: 12px 15px;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .logo img {
        height: 32px;
    }
    
    .welcome-text {
        font-size: 0.9rem;
    }
    
    .dashboard-content {
        padding: 25px 15px;
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .feature-button {
        min-height: 120px;
        padding: 18px 15px;
    }
    
    .feature-button .icon {
        font-size: 2rem;
        margin-bottom: 8px;
    }
    
    .feature-button .text {
        font-size: 0.9rem;
    }
    
    .dashboard-footer {
        padding: 20px 15px;
        font-size: 0.8rem;
    }
    
    /* 按钮适配 */
    .btn {
        padding: 10px 18px;
        font-size: 0.85rem;
        min-width: 100px;
    }
    
    /* 侧边栏适配 */
    .sidebar {
        width: 240px;
        left: -260px;
    }
    
    .sidebar-trigger {
        width: 15px;
        height: 60px;
    }
    
    .sidebar-trigger:hover {
        width: 18px;
    }
    
    .sidebar-header {
        padding: 20px 15px;
        font-size: 1.1rem;
    }
    
    .sidebar-item {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}

/* 大屏设备优化 (1200px 以上) */
@media (min-width: 1200px) {
    .dashboard-header {
        padding: 25px 60px;
    }
    
    .dashboard-content {
        padding: 60px 50px;
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 35px;
        max-width: 1400px;
    }
    
    .feature-button {
        min-height: 200px;
        padding: 35px 30px;
    }
    
    .feature-button .icon {
        font-size: 3.5rem;
        margin-bottom: 18px;
    }
    
    .feature-button .text {
        font-size: 1.2rem;
    }
    
    .dashboard-footer {
        padding: 35px 60px;
        font-size: 1rem;
    }
}