/* =================================================================== */
/* 汉堡菜单样式                                                        */
/* =================================================================== */

.hamburger-menu {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
}

.hamburger-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.hamburger-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.hamburger-line {
    width: 20px;
    height: 2px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.hamburger-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* 菜单覆盖层 */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 菜单内容 */
.menu-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 320px;
    height: 100%;
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.95),
        rgba(240, 253, 244, 0.9)
    );
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
}

.menu-overlay.active .menu-content {
    transform: translateX(0);
}

/* 菜单头部 */
.menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.1);
}

.menu-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
}

.menu-close {
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    font-size: 24px;
    color: #6b7280;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.menu-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #374151;
}

/* 菜单导航 */
.menu-nav {
    padding: 20px 0;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    text-decoration: none;
    color: #374151;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: rgba(34, 197, 94, 0.1);
    border-left-color: #22c55e;
    color: #059669;
}

.menu-icon {
    font-size: 1.25rem;
    margin-right: 12px;
    width: 24px;
    text-align: center;
}

.menu-text {
    font-size: 1rem;
    font-weight: 500;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .hamburger-menu {
        top: 16px;
        left: 16px;
    }
    
    .hamburger-btn {
        width: 44px;
        height: 44px;
    }
    
    .menu-content {
        width: 280px;
    }
    
    .menu-header {
        padding: 20px 16px;
    }
    
    .menu-item {
        padding: 14px 16px;
    }
}

/* 小屏幕适配 */
@media (max-width: 480px) {
    .menu-content {
        width: 100%;
        max-width: 280px;
    }
}