/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4a90d9;
    --primary-hover: #357abd;
    --bg-color: #f5f7fa;
    --sidebar-bg: #2c3e50;
    --sidebar-hover: #34495e;
    --text-color: #333;
    --text-light: #666;
    --border-color: #e1e5eb;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --error-color: #e74c3c;
    --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* 应用容器 */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏样式 */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    color: #fff;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h1 {
    font-size: 1.3rem;
    font-weight: 600;
}

.menu {
    list-style: none;
    padding: 10px 0;
    flex: 1;
    overflow-y: auto;
}

.menu-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: background-color 0.2s, border-left 0.2s;
    border-left: 3px solid transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}

.menu-item:hover {
    background-color: var(--sidebar-hover);
}

.menu-item.active {
    background-color: var(--sidebar-hover);
    border-left-color: var(--primary-color);
}

.menu-item .icon {
    font-size: 1.1rem;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.content-header {
    padding: 20px 30px;
    background-color: #fff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.content-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.content-body {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* 卡片样式 */
.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    padding: 24px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-color);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

/* 表单元素 */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-light);
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.1);
}

.form-select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    background-color: #fff;
    cursor: pointer;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-success {
    background-color: var(--success-color);
    color: #fff;
}

.btn-success:hover {
    background-color: #219a52;
}

.btn-secondary {
    background-color: #6c757d;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

/* 结果显示区域 */
.result-box {
    background-color: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    margin-top: 16px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    font-weight: 500;
    color: var(--text-light);
}

.result-value {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.95rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn {
    padding: 4px 8px;
    font-size: 0.8rem;
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.copy-btn:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.copy-btn.copied {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: #fff;
}

/* 实时时间显示 */
.live-time {
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    border-radius: 8px;
    margin-bottom: 20px;
}

.live-time .timestamp {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-top: 8px;
}

/* 工具栏 */
.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .sidebar {
        width: 200px;
    }
}

/* 欢迎页面 */
.welcome {
    text-align: center;
    padding: 60px 20px;
}

.welcome h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: var(--text-color);
}

.welcome p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

/* 提示消息 */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 24px;
    background-color: var(--success-color);
    color: #fff;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* 快捷时间按钮组 */
.quick-times {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.quick-time-btn {
    padding: 6px 12px;
    background-color: #e9ecef;
    border: none;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.quick-time-btn:hover {
    background-color: var(--primary-color);
    color: #fff;
}