/* 隐藏页面滚动条 */
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

/* 隐藏body滚动条但允许滚动 */
body {
    overflow: auto;
}

:root {
    /* 统一圆角变量 */
    --radius: 8px;
    /* 统一背景颜色变量 */
    --bg-color: #fafafa;
    /* 统一文字颜色变量 */
    --text-color: #333333;
    /* 统一按钮颜色变量 */
    --btn-bg: #e0e0e0;
    /* 统一按钮文字颜色变量 */
    --btn-text: #333333;
    --border: 1px solid #e0e0e0;
}

.app {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    font-family: Arial, sans-serif;
    width: 100%;
    min-width: 320px;
    min-height: 100%;
    box-sizing: border-box;
}

.nav {
    height: 56px;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-bottom: 1px solid #e9ecef;
    display: flex;
    align-items: center;
    padding: 0 20px;
    margin-bottom: 10px;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.nav-content {
    width: 100%;
    display: flex;
    align-items: center;
}

.nav-list {
    list-style: none;
    display: flex;
    gap: 16px;
    padding: 0;
    margin: 0;
    align-items: center;
    flex-wrap: wrap;
    transition: all 0.3s ease;
}

.nav-link {
    text-decoration: none;
    color: #495057;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
    white-space: nowrap;
    position: relative;
    border: 1px solid transparent;
}

.nav-link:hover {
    background-color: #f8f9fa;
    color: #212529;
    border-color: #dee2e6;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.nav-link.active {
    color: #4361ee;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.1) 0%, rgba(67, 97, 238, 0.05) 100%);
    border: 1px solid rgba(67, 97, 238, 0.2);
    box-shadow: 0 2px 8px rgba(67, 97, 238, 0.15);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 16px;
    right: 16px;
    height: 3px;
    background: linear-gradient(90deg, #4361ee, #3a56d4);
    border-radius: 3px;
}

/* 折叠菜单相关样式 */
.nav-collapse-item {
    position: relative;
    display: flex;
    align-items: center;
}

.nav-collapse-content {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid transparent;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    min-width: 140px;
    margin-top: 12px;
    flex-direction: column;
    gap: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: none;
    z-index: 1000;
    overflow: hidden;
}

.nav-collapse-item:hover .nav-collapse-content,
.nav-collapse-content.show {
    display: flex;
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    border-color: #e9ecef;
}

.nav-collapse-content .nav-link {
    padding: 12px 20px;
    border-bottom: 1px solid #f8f9fa;
    width: 100%;
    text-align: left;
    box-sizing: border-box;
    border-radius: 0;
    border: none;
    font-size: 14px;
    font-weight: 500;
    color: #495057;
    transition: all 0.2s ease;
}

.nav-collapse-content .nav-link:last-child {
    border-bottom: none;
}

.nav-collapse-content .nav-link:hover {
    background: linear-gradient(90deg, rgba(67, 97, 238, 0.08), rgba(67, 97, 238, 0.04));
    color: #4361ee;
    padding-left: 24px;
}

.nav-collapse-content .nav-link.active {
    background: linear-gradient(90deg, rgba(67, 97, 238, 0.15), rgba(67, 97, 238, 0.08));
    color: #4361ee;
    font-weight: 600;
    border: none;
    box-shadow: none;
}

.nav-collapse-content .nav-link.active::before {
    display: none;
}

.nav-toggle {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 1px solid #dee2e6;
    border-radius: 10px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: #495057;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-left: 12px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.nav-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.1), rgba(67, 97, 238, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.nav-toggle:hover {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-color: #4361ee;
    color: #4361ee;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.15);
}

.nav-toggle:hover::before {
    opacity: 1;
}

.nav-toggle-icon {
    font-size: 18px;
    line-height: 1;
    position: relative;
    z-index: 2;
    transition: transform 0.3s ease;
}

.nav-toggle:hover .nav-toggle-icon {
    transform: scale(1.1);
}

.nav-collapse-count {
    font-size: 12px;
    font-weight: 600;
    color: #4361ee;
    background: rgba(67, 97, 238, 0.1);
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
    position: relative;
    z-index: 2;
}

/* 响应式设计 */
@media (max-width: 767px) {
    .nav-list {
        gap: 12px;
        flex-wrap: nowrap;
        overflow: hidden;
    }

    /* 当菜单展开时，允许换行并显示所有可见项 */
    .nav-list.open {
        flex-wrap: wrap;
        overflow: visible;
    }

    .nav-link {
        padding: 6px 10px;
        font-size: 13px;
    }

    .nav-collapse-content {
        position: fixed;
        top: 48px;
        left: 0;
        right: 0;
        margin-top: 0;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        opacity: 1; /* 覆盖默认的opacity: 0 */
        visibility: visible; /* 覆盖默认的visibility: hidden */
        transform: none; /* 覆盖默认的transform */
        display: block; /* 覆盖默认的display: none，使用block而不是flex */
        /* 移除边框，避免横线显示 */
        border-style: none;
    }

    .nav-collapse-content.show {
        max-height: 300px;
    }

    .nav-collapse-content .nav-link {
        padding: 12px 16px;
        font-size: 14px;
    }

    .nav-toggle {
        padding: 8px 16px;
        margin-left: auto;
    }
}

@media (max-width: 479px) {
    .nav {
        padding: 0 12px;
        z-index: 1000; /* 确保导航栏在展开菜单上方 */
        height: 52px;
    }

    .nav-list {
        width: 100%;
        justify-content: space-between;
        align-items: center;
    }

    /* 当菜单展开时，允许换行并显示所有可见项 */
    .nav-list.open {
        flex-wrap: wrap;
        overflow: visible;
    }

    /* 可见的导航项应该始终显示 */
    .nav-list > li:not(.nav-collapse-item) {
        display: flex;
        align-items: center;
    }

    .nav-list > li:not(.nav-collapse-item) .nav-link {
        display: inline-block;
        padding: 8px 12px;
        font-size: 13px;
        white-space: nowrap;
        max-width: 80px;
        overflow: hidden;
        text-overflow: ellipsis;
        border: 1px solid transparent;
    }

    /* 折叠菜单内容 - 只在打开时显示 */
    .nav-collapse-content {
        position: fixed;
        top: 52px;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        z-index: 999;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        border: 0;
        border-radius: 0 0 12px 12px;
    }

    .nav-collapse-content.show {
        max-height: calc(100% - 52px);
        overflow-y: auto;
    }

    .nav-collapse-content .nav-link {
        display: block;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid #f8f9fa;
        padding: 14px 16px;
        font-size: 14px;
        font-weight: 500;
        color: #495057;
        transition: all 0.2s ease;
    }

    .nav-collapse-content .nav-link:hover {
        background: linear-gradient(90deg, rgba(67, 97, 238, 0.08), rgba(67, 97, 238, 0.04));
        color: #4361ee;
    }

    .nav-collapse-content .nav-link.active {
        background: linear-gradient(90deg, rgba(67, 97, 238, 0.15), rgba(67, 97, 238, 0.08));
        color: #4361ee;
        font-weight: 600;
    }

    .nav-collapse-content .nav-link:last-child {
        border-bottom: none;
    }

    .nav-toggle {
        padding: 8px 12px;
        font-size: 13px;
        min-width: 44px;
        height: 32px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
        border: 1px solid #dee2e6;
        border-radius: 8px;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    }

    .nav-toggle:hover {
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        border-color: #4361ee;
        color: #4361ee;
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(67, 97, 238, 0.15);
    }

    .nav-collapse-count {
        display: none;
    }
}

/* 隐藏滚动条样式 */
/* WebKit浏览器 (Chrome, Safari, Edge) */
body::-webkit-scrollbar,
.app::-webkit-scrollbar,
.nav-collapse-content.show::-webkit-scrollbar,
.timestamp-display::-webkit-scrollbar {
    display: none;
}

/* Firefox */
body,
.app,
.nav-collapse-content.show,
.timestamp-display {
    scrollbar-width: none;
}

/* IE/Edge 10+ */
body,
.app,
.nav-collapse-content.show,
.timestamp-display {
    -ms-overflow-style: none;
}

/* 超小屏幕适配 - 修复边框遮挡问题 */
@media (max-width: 399px) {
    .nav {
        position: relative;
        border-bottom: none; /* 移除导航栏底部边框 */
        height: 48px;
        padding: 0 8px;
    }

    .nav::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, #e9ecef, transparent);
    }

    /* 当菜单展开时，允许换行并显示所有可见项 */
    .nav-list.open {
        flex-wrap: wrap;
        overflow: visible;
    }

    /* 调整可见导航项的宽度，适应更小的屏幕 */
    .nav-list > li:not(.nav-collapse-item) .nav-link {
        max-width: 60px;
        padding: 6px 8px;
        font-size: 12px;
        border: 1px solid transparent;
    }

    .nav-list > li:not(.nav-collapse-item) .nav-link.active {
        background: linear-gradient(135deg, rgba(67, 97, 238, 0.1) 0%, rgba(67, 97, 238, 0.05) 100%);
        border: 1px solid rgba(67, 97, 238, 0.2);
        box-shadow: 0 1px 4px rgba(67, 97, 238, 0.15);
    }

    .nav-collapse-content {
        top: 48px;
    }

    .nav-collapse-content.show {
        max-height: calc(100% - 48px);
    }

    .nav-toggle {
        padding: 6px 10px;
        font-size: 12px;
        min-width: 36px;
        height: 28px;
        background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
        border: 1px solid #dee2e6;
        border-radius: 6px;
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
    }

    .nav-toggle:hover {
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        border-color: #4361ee;
        color: #4361ee;
        transform: translateY(-1px);
        box-shadow: 0 2px 8px rgba(67, 97, 238, 0.15);
    }

    .nav-toggle-icon {
        font-size: 12px;
    }
}

/* 中等屏幕适配 */
@media (min-width: 480px) and (max-width: 767px) {
    .nav-list {
        flex-wrap: wrap;
        justify-content: flex-start;
    }

    .nav-link {
        flex: 0 0 auto;
    }

    .nav-collapse-item {
        margin-left: auto;
    }

    /* 确保.nav-list.open不会影响中等屏幕的布局 */
    .nav-list.open {
        flex-wrap: wrap;
        position: static;
        background: none;
        border: none;
        box-shadow: none;
        max-height: none;
        overflow: visible;
    }
}

.page {
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
}

.user-list {
    list-style: none;
    padding: 0;
}

.user-list li {
    padding: 8px;
    border-bottom: 1px solid #eee;
}

.btn {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background: #2196f3;
    color: white;
    text-decoration: none;
    border-radius: 8px;
}

.btn:hover {
    background: #0b7dda;
}

.actions {
    margin: 20px 0;
}

.action-btn {
    margin-right: 10px;
    padding: 8px 16px;
    background: #4caf50;
    color: white;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid #d9d9d9;
    box-shadow: 0 2px #00000004;
    transition: .8s;
    opacity: 4;
}

.action-btn:hover {
    background: #3d8b40;
}

.action-btn:active {
    box-shadow: 0 0 0 6px rgba(0, 0, 0, 0.2);
    opacity: 0;
}

.action-btn:active::after {
    box-shadow: none;
    opacity: 0.4;
    transition: 0s;
}

.stop-btn {
    margin-right: 10px;
    padding: 8px 16px;
    background: #f32152;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.stop-btn:hover {
    background: #ff0000;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    margin-bottom: 20px;
    box-sizing: border-box;
    font-size: 14px;
}

select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    margin-bottom: 20px;
    box-sizing: border-box;
    font-size: 14px;
}

/* 时间戳组件样式 */
.timestamp-container {
    padding: 20px;
    border: var(--border);
    border-radius: var(--radius);
    background: var(--bg-color);
    margin: 20px 0;
}

.timestamp-container:hover {
    box-shadow: 4px 4px 12px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

/* 时间戳显示区域 */
.timestamp-display {
    display: flex;
    align-items: center; /* 垂直居中 */
    justify-content: center; /* 横向居中 */
    gap: 10px;
    border-radius: var(--radius);
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
}

.timestamp-value {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
    flex-shrink: 0;
}

.timestamp-unit {
    font-size: 1rem;
    color: var(--text-color);
    font-weight: 400;
}

.timestamp-controls {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.timestamp-btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    min-width: 120px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

/* 确保 CopyButton 也使用相同的样式 */
.timestamp-controls .action-btn,
.timestamp-controls .stop-btn {
    min-width: 120px;
    height: 44px;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.timestamp-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.timestamp-btn:active {
    transform: translateY(0);
}

.timestamp-status {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    font-size: 0.9rem;
    border: 1px solid #e0e0e0;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.status-indicator.running {
    color: #27ae60;
}

.status-indicator.stopped {
    color: #e74c3c;
}

.unit-indicator {
    color: #7f8c8d;
    font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .timestamp-container {
        padding: 15px;
    }

    .timestamp-display {
        padding: 12px;
        align-items: center; /* 垂直居中 */
        justify-content: center; /* 横向居中 */
    }

    .timestamp-value {
        font-size: 1.8rem;
        line-height: 1.1;
    }

    .timestamp-unit {
        font-size: 1rem;
        flex-shrink: 0;
    }

    .timestamp-controls {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: space-between;
        gap: 8px;
    }

    .timestamp-btn,
    .timestamp-controls .action-btn,
    .timestamp-controls .stop-btn {
        width: auto;
        flex: 1;
        min-width: auto;
        max-width: none;
        height: 44px;
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .timestamp-status {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* 400px以下屏幕适配 - 防止按钮文本换行 */
@media (max-width: 400px) {
    .timestamp-controls {
        gap: 4px;
    }

    .timestamp-btn,
    .timestamp-controls .action-btn,
    .timestamp-controls .stop-btn {
        padding: 6px 4px;
        font-size: 0.75rem;
        height: 38px;
        min-width: auto;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

/* 超小屏幕适配 */
@media (max-width: 360px) {
    .timestamp-value {
        font-size: 1.5rem;
    }

    .timestamp-display {
        padding: 10px;
        align-items: center; /* 垂直居中 */
        justify-content: center; /* 横向居中 */
    }

    .timestamp-controls {
        gap: 3px;
    }

    .timestamp-btn,
    .timestamp-controls .action-btn,
    .timestamp-controls .stop-btn {
        padding: 5px 3px;
        font-size: 0.7rem;
        height: 36px;
    }
}

/* 日期时间转换器样式 */
.datetime-converter {
    padding: 20px;
    border: var(--border);
    border-radius: 8px;
    background: var(--bg-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    margin: 20px 0;
}

.datetime-converter:hover {
    box-shadow: 4px 4px 12px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.converter-title {
    color: #2c3e50;
    font-size: 1.5rem;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}

.converter-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-group,
.result-group {
    display: flex;
    gap: 12px;
    align-items: center;
}

.datetime-input,
.result-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 400;
    background: white;
    transition: border-color 0.2s ease;
    width: auto !important;
    margin-bottom: 0 !important;
}

.datetime-input:focus,
.result-input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.timezone-select,
.unit-select {
    padding: 10px 14px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 0.95rem;
    background: white;
    min-width: 180px;
    cursor: pointer;
    transition: border-color 0.2s ease;
    width: auto !important;
    margin-bottom: 0 !important;
}

.timezone-select:focus,
.unit-select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.action-group {
    display: flex;
    justify-content: center;
}

.converter-btn {
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 1rem;
    min-width: 120px;
}

.error-message {
    padding: 10px 14px;
    background: #ffeaea;
    border: 1px solid #ffcccc;
    border-radius: 8px;
    color: #d32f2f;
    font-size: 0.9rem;
    text-align: center;
    animation: fadeIn 0.3s ease;
}

.result-info {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    font-size: 0.95rem;
    text-align: center;
}

.result-label {
    font-weight: 600;
    color: #2c3e50;
}

.result-value {
    font-family: 'Courier New', monospace;
    font-weight: 700;
    color: #3498db;
    margin: 0 4px;
}

.result-unit {
    color: #7f8c8d;
    font-weight: 500;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .input-group,
    .result-group {
        flex-direction: column;
        align-items: stretch;
    }

    .timezone-select,
    .unit-select {
        min-width: auto;
        width: 100% !important;
    }

    .datetime-converter {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .converter-title {
        font-size: 1.3rem;
    }

    .datetime-input,
    .result-input,
    .timezone-select,
    .unit-select {
        padding: 8px 12px;
        font-size: 0.9rem;
    }

    .converter-btn {
        padding: 10px 20px;
        font-size: 0.95rem;
    }
}