/* ==================== 主题变量系统 ==================== */

:root {
    /* 浅色模式（默认） */
    --bg-primary: #F8F9FA;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F0F2F5;
    
    --text-primary: #2C3E50;
    --text-secondary: #5A6C7D;
    --text-tertiary: #8B9AA8;
    
    --border-primary: #E1E8ED;
    --border-secondary: #D0D7DE;
    
    --accent-primary: #3B4D61;
    --accent-secondary: #5B6B7D;
    --accent-hover: #1A252F;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    
    --success: #27AE60;
    --warning: #F39C12;
    --error: #E74C3C;
    --info: #3498DB;
}

[data-theme="dark"] {
    /* 深色模式 */
    --bg-primary: #1A1D23;
    --bg-secondary: #252932;
    --bg-tertiary: #2F3541;
    
    --text-primary: #E8EAED;
    --text-secondary: #A0A4A8;
    --text-tertiary: #6B7280;
    
    --border-primary: #3A3F47;
    --border-secondary: #4A5058;
    
    --accent-primary: #5B6B7D;
    --accent-secondary: #7A8A9D;
    --accent-hover: #8B9BAE;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    
    --success: #2ECC71;
    --warning: #F1C40F;
    --error: #E74C3C;
    --info: #3498DB;
}

/* ==================== 全局样式 ==================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
}

/* ==================== 主题切换按钮 ==================== */

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid var(--border-primary);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    z-index: 1000;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-icon-light,
.theme-icon-dark {
    position: absolute;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

[data-theme="light"] .theme-icon-light {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="light"] .theme-icon-dark {
    opacity: 1;
    transform: rotate(0deg);
}

[data-theme="dark"] .theme-icon-light {
    opacity: 1;
    transform: rotate(0deg);
}

[data-theme="dark"] .theme-icon-dark {
    opacity: 0;
    transform: rotate(-180deg);
}

/* ==================== 容器和布局 ==================== */

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.header-title {
    text-align: center;
    color: var(--text-primary);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 30px;
    letter-spacing: 2px;
}

.mailbox-data-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid var(--border-primary);
}

.mailbox-data-section h2 {
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
}

.mailbox-data-section h2::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 2px;
    margin-right: 12px;
}

.import-container {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
}

.api-type-select {
    padding: 12px;
    border: 1px solid var(--border-primary);
    border-radius: 4px;
    width: auto;
    min-width: fit-content;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.file-info {
    flex: 1;
    color: var(--text-secondary);
    font-size: 14px;
}

.mailbox-data-textarea {
    width: 100%;
    min-height: 200px;
    padding: 16px;
    border: 2px solid var(--border-primary);
    border-radius: 8px;
    font-size: 14px;
    font-family: 'Consolas', 'Monaco', monospace;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    resize: vertical;
    transition: all 0.3s ease;
}

.mailbox-data-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
    box-shadow: 0 0 0 3px rgba(59, 77, 97, 0.1);
}

[data-theme="dark"] .mailbox-data-textarea:focus {
    box-shadow: 0 0 0 3px rgba(91, 107, 125, 0.2);
}

/* ==================== 两栏布局 ==================== */

.two-column-layout {
    display: grid;
    grid-template-columns: 4fr 2fr;
    gap: 20px;
}

.api-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-primary);
}

.api-section h2 {
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.api-section h2::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 2px;
    margin-right: 12px;
}

/* ==================== 按钮样式 ==================== */

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--accent-primary);
    color: #FFFFFF;
    border: 2px solid var(--accent-primary);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--border-primary);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ==================== 表单元素 ==================== */

input[type="text"],
input[type="email"],
input[type="password"],
select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-primary);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-secondary);
    transition: all 0.3s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(59, 77, 97, 0.1);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus {
    box-shadow: 0 0 0 3px rgba(91, 107, 125, 0.2);
}

/* ==================== 表格样式 ==================== */

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-primary);
}

th {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
}

td {
    color: var(--text-secondary);
}

tr:hover {
    background: var(--bg-tertiary);
}

/* ==================== 状态标记 ==================== */

.status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.status-success {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success);
}

.status-warning {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning);
}

.status-error {
    background: rgba(231, 76, 60, 0.1);
    color: var(--error);
}

.status-info {
    background: rgba(52, 152, 219, 0.1);
    color: var(--info);
}

/* ==================== 响应式设计 ==================== */

@media (max-width: 1024px) {
    .two-column-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .header-title {
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    .theme-toggle {
        width: 40px;
        height: 40px;
        font-size: 20px;
        top: 10px;
        right: 10px;
    }
    
    .mailbox-data-section,
    .api-section {
        padding: 16px;
    }
}

/* ==================== 动画效果 ==================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease-out;
}

/* ==================== 滚动条样式 ==================== */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-secondary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* ==================== 代码块样式 ==================== */

code {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
}

pre {
    background: var(--bg-tertiary);
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    border: 1px solid var(--border-primary);
}

pre code {
    background: none;
    padding: 0;
}

/* ==================== 标签页样式 ==================== */

.tab-navigation {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-primary);
    padding-bottom: 0;
}

.tab-btn {
    padding: 12px 32px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: -2px;
    position: relative;
}

.tab-btn:hover {
    color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.tab-btn.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    background: var(--bg-secondary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.tab-content.active {
    display: grid;
}

/* ==================== 响应式设计 ==================== */

@media (max-width: 768px) {
    .tab-navigation {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        padding: 10px 20px;
        font-size: 14px;
        white-space: nowrap;
    }
}