/* 液态玻璃风格样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(55, 65, 81, 0.25);
    --glass-backdrop: blur(10px);
    --primary-color: #4b5563;
    --secondary-color: #6b7280;
    --text-color: #1f2937;
    --text-secondary: #374151;
    --hover-bg: rgba(107, 114, 128, 0.1);
    --active-bg: rgba(107, 114, 128, 0.2);
    --bg-gradient: linear-gradient(135deg, #6b7280 0%, #9ca3af 50%, #f3f4f6 100%);
}

/* 默认配色（如果没有指定） */
body:not([class*="color-"]) {
    --bg-gradient: linear-gradient(135deg, #6b7280 0%, #9ca3af 50%, #f3f4f6 100%);
    --primary-color: #4b5563;
    --secondary-color: #6b7280;
    --text-color: #1f2937;
    --text-secondary: #374151;
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(107, 114, 128, 0.3);
    --hover-bg: rgba(107, 114, 128, 0.1);
    --active-bg: rgba(107, 114, 128, 0.2);
}

/* 蓝白配色 */
body.color-blue-white {
    --bg-gradient: linear-gradient(135deg, #3b82f6 0%, #60a5fa 50%, #ffffff 100%);
    --primary-color: #3b82f6;
    --secondary-color: #60a5fa;
    --text-color: #1e3a8a;
    --text-secondary: #1e40af;
    --glass-bg: rgba(255, 255, 255, 0.2);
    --glass-border: rgba(59, 130, 246, 0.3);
    --hover-bg: rgba(59, 130, 246, 0.1);
    --active-bg: rgba(59, 130, 246, 0.2);
}

/* 灰白配色 */
body.color-gray-white {
    --bg-gradient: linear-gradient(135deg, #6b7280 0%, #9ca3af 50%, #f3f4f6 100%);
    --primary-color: #4b5563;
    --secondary-color: #6b7280;
    --text-color: #1f2937;
    --text-secondary: #374151;
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(107, 114, 128, 0.3);
    --hover-bg: rgba(107, 114, 128, 0.1);
    --active-bg: rgba(107, 114, 128, 0.2);
}

/* 青绿配色 */
body.color-cyan-green {
    --bg-gradient: linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
    --primary-color: #06b6d4;
    --secondary-color: #10b981;
    --text-color: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(6, 182, 212, 0.3);
    --hover-bg: rgba(255, 255, 255, 0.2);
    --active-bg: rgba(255, 255, 255, 0.3);
}

/* 橙红配色 */
body.color-orange-red {
    --bg-gradient: linear-gradient(135deg, #f97316 0%, #ef4444 100%);
    --primary-color: #f97316;
    --secondary-color: #ef4444;
    --text-color: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(249, 115, 22, 0.3);
    --hover-bg: rgba(255, 255, 255, 0.2);
    --active-bg: rgba(255, 255, 255, 0.3);
}

/* 深蓝配色 */
body.color-deep-blue {
    --bg-gradient: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --text-color: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(59, 130, 246, 0.3);
    --hover-bg: rgba(255, 255, 255, 0.15);
    --active-bg: rgba(255, 255, 255, 0.25);
}

/* 粉紫配色 */
body.color-pink-purple {
    --bg-gradient: linear-gradient(135deg, #ec4899 0%, #a855f7 100%);
    --primary-color: #ec4899;
    --secondary-color: #a855f7;
    --text-color: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(236, 72, 153, 0.3);
    --hover-bg: rgba(255, 255, 255, 0.2);
    --active-bg: rgba(255, 255, 255, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-gradient);
    background-attachment: fixed;
    background-size: cover;
    background-repeat: no-repeat;
    min-height: 100vh;
    color: var(--text-color);
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    /* 防护样式 - 禁用文本选择 */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
}

/* 允许按钮和输入框等交互元素可以选择文本（用于正常功能） */
button, input, textarea, a, .glass-button, .menu-item {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* 玻璃容器 */
.glass-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 顶部栏 */
.glass-header {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--glass-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-section {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    width: 40px;
    object-fit: contain;
    border-radius: 8px;
    flex-shrink: 0;
}

.logo-placeholder {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.audio-name {
    font-size: 1.2rem;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    color: var(--text-color);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity 0.3s;
}

.audio-name:hover {
    opacity: 0.85;
}

/* 主内容区 */
.main-content {
    flex: 1;
    display: flex;
    gap: 2rem;
    padding: 2rem 2rem 2rem 1.25rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* 左侧菜单栏 */
.glass-sidebar {
    width: 250px;
    flex-shrink: 0;
}

.menu-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.menu-item {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    box-shadow: var(--glass-shadow);
}

.menu-item:hover {
    background: var(--hover-bg);
    transform: translateX(5px);
    border-color: rgba(107, 114, 128, 0.45);
}

.menu-item.active {
    background: var(--active-bg);
    border-color: rgba(107, 114, 128, 0.4);
    box-shadow: 0 8px 32px 0 rgba(75, 85, 99, 0.35);
}

.menu-item i {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.menu-item span {
    font-weight: 500;
}

/* 右侧内容区 */
.glass-content {
    flex: 1;
    min-width: 0;
}

.content-wrapper {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--glass-shadow);
    min-height: 500px;
}

.content-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.content-header h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.menu-content-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    opacity: 0.8;
    margin-top: 0.25rem;
    font-weight: normal;
    line-height: 1.5;
}

.content-header h2 i {
    color: var(--primary-color);
}

.content-body {
    color: var(--text-secondary);
    line-height: 1.8;
}

.content-text {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.home-content-text {
    margin-bottom: 2rem;
    margin-top: 1rem;
    font-size: 1.1rem;
    line-height: 1.8;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    box-shadow: var(--glass-shadow);
}

/* 按钮网格 */
.buttons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1.2rem;
    margin-top: 2rem;
    width: 100%;
}

/* 按钮数量较多时自动缩小 */
.buttons-grid[data-button-count="9"] .glass-button,
.buttons-grid[data-button-count="10"] .glass-button,
.buttons-grid[data-button-count="11"] .glass-button,
.buttons-grid[data-button-count="12"] .glass-button {
    padding: 0.75rem;
}

.buttons-grid[data-button-count="9"] .glass-button i,
.buttons-grid[data-button-count="10"] .glass-button i,
.buttons-grid[data-button-count="11"] .glass-button i,
.buttons-grid[data-button-count="12"] .glass-button i {
    font-size: 1.3rem;
}

.buttons-grid[data-button-count="9"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="10"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="11"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="12"] .glass-button .button-icon-img {
    width: 32px;
    height: 32px;
}

.buttons-grid[data-button-count="13"] .glass-button,
.buttons-grid[data-button-count="14"] .glass-button,
.buttons-grid[data-button-count="15"] .glass-button,
.buttons-grid[data-button-count="16"] .glass-button {
    padding: 0.6rem;
}

.buttons-grid[data-button-count="13"] .glass-button i,
.buttons-grid[data-button-count="14"] .glass-button i,
.buttons-grid[data-button-count="15"] .glass-button i,
.buttons-grid[data-button-count="16"] .glass-button i {
    font-size: 1.2rem;
}

.buttons-grid[data-button-count="13"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="14"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="15"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="16"] .glass-button .button-icon-img {
    width: 28px;
    height: 28px;
}

.buttons-grid[data-button-count="17"] .glass-button,
.buttons-grid[data-button-count="18"] .glass-button,
.buttons-grid[data-button-count="19"] .glass-button,
.buttons-grid[data-button-count="20"] .glass-button,
.buttons-grid[data-button-count="21"] .glass-button,
.buttons-grid[data-button-count="22"] .glass-button,
.buttons-grid[data-button-count="23"] .glass-button,
.buttons-grid[data-button-count="24"] .glass-button {
    padding: 0.5rem;
}

.buttons-grid[data-button-count="17"] .glass-button i,
.buttons-grid[data-button-count="18"] .glass-button i,
.buttons-grid[data-button-count="19"] .glass-button i,
.buttons-grid[data-button-count="20"] .glass-button i,
.buttons-grid[data-button-count="21"] .glass-button i,
.buttons-grid[data-button-count="22"] .glass-button i,
.buttons-grid[data-button-count="23"] .glass-button i,
.buttons-grid[data-button-count="24"] .glass-button i {
    font-size: 1.1rem;
}

.buttons-grid[data-button-count="17"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="18"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="19"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="20"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="21"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="22"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="23"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="24"] .glass-button .button-icon-img {
    width: 26px;
    height: 26px;
}

/* 按钮数量超过24个时，进一步缩小网格 */
.buttons-grid[data-button-count] {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
}

.buttons-grid[data-button-count="25"] .glass-button,
.buttons-grid[data-button-count="26"] .glass-button,
.buttons-grid[data-button-count="27"] .glass-button,
.buttons-grid[data-button-count="28"] .glass-button,
.buttons-grid[data-button-count="29"] .glass-button,
.buttons-grid[data-button-count="30"] .glass-button {
    padding: 0.5rem;
}

.buttons-grid[data-button-count="25"] .glass-button i,
.buttons-grid[data-button-count="26"] .glass-button i,
.buttons-grid[data-button-count="27"] .glass-button i,
.buttons-grid[data-button-count="28"] .glass-button i,
.buttons-grid[data-button-count="29"] .glass-button i,
.buttons-grid[data-button-count="30"] .glass-button i {
    font-size: 1rem;
}

.buttons-grid[data-button-count="25"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="26"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="27"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="28"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="29"] .glass-button .button-icon-img,
.buttons-grid[data-button-count="30"] .glass-button .button-icon-img {
    width: 24px;
    height: 24px;
}

.buttons-grid[data-button-count="25"] .glass-button span,
.buttons-grid[data-button-count="26"] .glass-button span,
.buttons-grid[data-button-count="27"] .glass-button span,
.buttons-grid[data-button-count="28"] .glass-button span,
.buttons-grid[data-button-count="29"] .glass-button span,
.buttons-grid[data-button-count="30"] .glass-button span {
    font-size: 0.85rem;
}

.glass-button {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    box-shadow: var(--glass-shadow);
    text-align: center;
}

.glass-button:hover {
    background: var(--hover-bg);
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(75, 85, 99, 0.3);
    border-color: rgba(107, 114, 128, 0.35);
}

.glass-button i {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.glass-button .button-icon-img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    margin-bottom: 0.25rem;
}

.glass-button span {
    font-weight: 500;
    font-size: 0.9rem;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* 底部信息 */
.glass-footer {
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.glass-footer-content {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    box-shadow: var(--glass-shadow);
    display: inline-block;
}

.glass-footer-content p {
    margin: 0;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
        padding: 1rem;
    }

    .glass-sidebar {
        width: 100%;
    }

    .menu-nav {
        flex-direction: row;
        overflow-x: auto;
    }

    .menu-item {
        min-width: 120px;
        flex-shrink: 0;
    }

    .buttons-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 0.8rem;
    }
    
    .home-content-text {
        padding: 1rem;
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }

    .glass-header {
        padding: 1rem;
    }

    .audio-name {
        font-size: 1rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-wrapper {
    animation: fadeIn 0.5s ease;
}

.menu-item {
    animation: fadeIn 0.3s ease;
}

.glass-button {
    animation: fadeIn 0.4s ease;
}

/* 网站名称 */
.site-name {
    margin-left: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

/* 按钮网格自适应 - 已在上方定义，这里删除重复 */

/* 图片按钮 */
.image-button {
    cursor: pointer;
}

.button-image-preview {
    width: 100%;
    max-width: 100px;
    height: auto;
    max-height: 80px;
    object-fit: contain;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

/* 密码保护按钮 */
.glass-button.password-protected {
    position: relative;
}

/* 联系方式 */
.contact-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
}

.contact-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.contact-item {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 200px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* 图片模态框 */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.image-modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.image-modal-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
}

.image-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: white;
    font-size: 3rem;
    cursor: pointer;
    line-height: 1;
}

.image-modal-close:hover {
    opacity: 0.7;
}

/* 密码输入模态框 */
#password-modal,
.password-modal {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(0, 0, 0, 0.6) !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
    display: none;
    align-items: center !important;
    justify-content: center !important;
    z-index: 99999 !important;
    padding: 1rem !important;
    box-sizing: border-box !important;
    margin: 0 !important;
}

#password-modal[style*="flex"],
.password-modal[style*="flex"] {
    display: flex !important;
}

#password-modal .password-modal-content,
.password-modal-content {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    border-radius: 20px !important;
    padding: 2rem !important;
    max-width: 400px !important;
    width: 90% !important;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3) !important;
    color: #1f2937 !important;
    position: relative !important;
    margin: 0 auto !important;
    box-sizing: border-box !important;
}

.password-modal-header {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    margin-bottom: 1.5rem !important;
    padding-bottom: 1rem !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
}

.password-modal-header h3 {
    margin: 0 !important;
    font-size: 1.3rem !important;
    color: #1f2937 !important;
}

.password-modal-close {
    background: none !important;
    border: none !important;
    font-size: 2rem !important;
    color: #6b7280 !important;
    cursor: pointer !important;
    line-height: 1 !important;
    opacity: 0.7 !important;
    transition: opacity 0.3s !important;
}

.password-modal-close:hover {
    opacity: 1 !important;
}

.password-modal-body {
    margin-bottom: 1.5rem !important;
}

.password-modal-body input {
    width: 100% !important;
    padding: 0.75rem 1rem !important;
    border: 2px solid #e5e7eb !important;
    border-radius: 8px !important;
    background: #ffffff !important;
    color: #1f2937 !important;
    font-size: 1rem !important;
    box-sizing: border-box !important;
}

.password-modal-body input:focus {
    outline: none !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2) !important;
}

.password-modal-body input::placeholder {
    color: #9ca3af !important;
}

.password-modal-footer {
    display: flex !important;
    gap: 1rem !important;
    justify-content: flex-end !important;
}

.password-modal-footer .btn-cancel,
.password-modal-footer .btn-confirm {
    padding: 0.75rem 1.5rem !important;
    border: none !important;
    border-radius: 8px !important;
    cursor: pointer !important;
    font-weight: 500 !important;
    transition: all 0.3s !important;
}

.password-modal-footer .btn-cancel {
    background: #f3f4f6 !important;
    color: #4b5563 !important;
    border: 1px solid #e5e7eb !important;
}

.password-modal-footer .btn-cancel:hover {
    background: #e5e7eb !important;
}

.password-modal-footer .btn-confirm {
    background: #3b82f6 !important;
    color: white !important;
}

.password-modal-footer .btn-confirm:hover {
    background: #2563eb !important;
    transform: translateY(-2px) !important;
}

/* 子菜单标签页 */
.submenu-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.submenu-tab {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.submenu-tab:hover {
    background: var(--hover-bg);
    transform: translateY(-2px);
}

.submenu-tab.active {
    background: var(--active-bg);
    border-color: rgba(107, 114, 128, 0.4);
    box-shadow: 0 4px 12px rgba(75, 85, 99, 0.2);
}

/* 子菜单区域 */
.submenu-section {
    margin-bottom: 2rem;
}

.submenu-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-left: 0.5rem;
    border-left: 3px solid var(--primary-color);
    color: var(--text-color);
}

.submenu-section .buttons-grid {
    margin-top: 1rem;
}