/* ============================================
   拼多多中转仓履约系统 - 公共样式表 v2
   设计理念: 丝滑、轻盈、有呼吸感
   ============================================ */

/* ===== CSS 变量 ===== */
:root {
    /* 品牌色系 */
    --primary: #6366F1;
    --primary-lighter: #A5B4FC;
    --primary-light: #818CF8;
    --primary-dark: #4F46E5;
    --primary-darker: #3730A3;
    --primary-glow: rgba(99, 102, 241, 0.25);

    /* 语义色 */
    --success: #10B981;
    --success-light: #6EE7B7;
    --success-glow: rgba(16, 185, 129, 0.2);
    --warning: #F59E0B;
    --warning-light: #FCD34D;
    --warning-glow: rgba(245, 158, 11, 0.2);
    --danger: #EF4444;
    --danger-light: #FCA5A5;
    --danger-glow: rgba(239, 68, 68, 0.2);
    --info: #3B82F6;
    --info-light: #93C5FD;

    /* 中性色 */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* 渐变 - 丝滑多色过渡 */
    --gradient-brand: linear-gradient(135deg, #6366F1 0%, #8B5CF6 40%, #A78BFA 70%, #818CF8 100%);
    --gradient-success: linear-gradient(135deg, #059669 0%, #10B981 40%, #34D399 70%, #6EE7B7 100%);
    --gradient-warning: linear-gradient(135deg, #D97706 0%, #F59E0B 40%, #FBBF24 70%, #FCD34D 100%);
    --gradient-danger: linear-gradient(135deg, #DC2626 0%, #EF4444 40%, #F87171 70%, #FCA5A5 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(99,102,241,0.03) 100%);

    /* 玻璃效果 */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    --glass-blur: saturate(180%) blur(20px);

    /* 阴影层级 */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.07), 0 4px 10px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.1), 0 8px 20px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px var(--primary-glow), 0 8px 32px rgba(99, 102, 241, 0.12);

    /* 圆角 */
    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* 过渡 - 丝滑贝塞尔曲线 */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);

    /* 当前主题色 */
    --bg-color: #F8FAFC;
    --bg-secondary: #F1F5F9;
    --text-color: var(--gray-700);
    --text-secondary: var(--gray-500);
    --card-bg: var(--white);
    --card-border: var(--gray-100);
    --header-text: var(--gray-800);
    --border-color: var(--gray-200);
    --hover-bg: var(--gray-50);
    --hover-border: var(--gray-300);
}

/* ===== 暗黑模式 ===== */
body.dark-mode {
    --bg-color: #0F172A;
    --bg-secondary: #1E293B;
    --text-color: #E2E8F0;
    --text-secondary: #94A3B8;
    --card-bg: #1E293B;
    --card-border: #334155;
    --header-text: #F1F5F9;
    --border-color: #334155;
    --hover-bg: #273548;
    --hover-border: #475569;
    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(51, 65, 85, 0.5);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ===== 基础重置 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
    background: var(--bg-color);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.06), transparent),
        radial-gradient(ellipse 50% 80% at 100% 50%, rgba(139, 92, 246, 0.03), transparent);
    background-attachment: fixed;
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.4s var(--ease-in-out-smooth), color 0.4s var(--ease-in-out-smooth);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

/* ===== 自定义滚动条 ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
    transition: background 0.2s;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}
::-webkit-scrollbar-corner {
    background: transparent;
}

/* ===== 文本选择 ===== */
::selection {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-dark);
}
body.dark-mode ::selection {
    background: rgba(129, 140, 248, 0.2);
    color: #C7D2FE;
}

/* ===== 容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 20px;
    animation: fadeInUp 0.5s var(--ease-out-expo);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 页面头部 ===== */
.header {
    background: var(--gradient-brand);
    color: var(--white);
    padding: 16px 22px;
    border-radius: var(--radius-xl);
    margin-bottom: 16px;
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.2), 0 2px 8px rgba(99, 102, 241, 0.1);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -30%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255,255,255,0.12) 0%, transparent 70%);
    animation: headerShimmer 6s ease-in-out infinite;
}
.header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(255,255,255,0.06) 0%, transparent 70%);
    animation: headerShimmer 8s ease-in-out 2s infinite;
}

@keyframes headerShimmer {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.6; }
    50% { transform: translate(5%, -3%) scale(1.08); opacity: 1; }
}

.header h1 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 6px;
    position: relative;
    z-index: 1;
    letter-spacing: -0.3px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.header p {
    font-size: 12px;
    opacity: 0.85;
    position: relative;
    z-index: 1;
    font-weight: 400;
    letter-spacing: 0.2px;
}

/* ===== 卡片 ===== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    padding: 16px 20px;
    margin-bottom: 14px;
    transition: all 0.35s var(--ease-out-expo);
    position: relative;
}
.card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.35s var(--ease-out-expo);
    box-shadow: var(--shadow-glow);
    pointer-events: none;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--hover-border);
}
.card:hover::after {
    opacity: 0.5;
}

.card h2 {
    color: var(--header-text);
    font-size: 15px;
    font-weight: 650;
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -0.2px;
}
.card h2::before {
    content: '';
    width: 3px;
    height: 18px;
    background: var(--gradient-brand);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 16px;
    background: var(--gradient-brand);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 550;
    transition: all 0.3s var(--ease-out-back);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.1px;
    user-select: none;
    -webkit-user-select: none;
}
.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    border-radius: inherit;
    pointer-events: none;
}
.btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
}
.btn:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 1px 4px rgba(99, 102, 241, 0.2);
    transition-duration: 0.1s;
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-xs);
}
.btn-secondary::before { display: none; }
.btn-secondary:hover {
    background: var(--hover-bg);
    border-color: var(--primary-light);
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--gradient-danger);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.25);
}
.btn-danger:hover {
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.35);
}

.btn-success {
    background: var(--gradient-success);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}
.btn-success:hover {
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
}

.btn-small {
    padding: 4px 10px;
    font-size: 12px;
    border-radius: var(--radius-xs);
}

.btn-icon {
    width: 38px; height: 38px;
    padding: 0;
    border-radius: var(--radius-full);
    font-size: 16px;
}

/* ===== 表单 ===== */
.form-input, input[type="text"], input[type="password"], input[type="email"],
input[type="tel"], input[type="number"], input[type="file"], select, textarea {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: var(--card-bg);
    color: var(--text-color);
    transition: all 0.25s var(--ease-in-out-smooth);
    outline: none;
    font-family: inherit;
    width: 100%;
}
.form-input:hover, input:hover, select:hover, textarea:hover {
    border-color: var(--gray-300);
}
.form-input:focus, input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.08), 0 0 0 1px rgba(99, 102, 241, 0.2);
    background: var(--card-bg);
}
.form-input::placeholder, input::placeholder, textarea::placeholder {
    color: var(--gray-400);
}

label {
    display: block;
    margin-bottom: 3px;
    font-size: 12px;
    font-weight: 550;
    color: var(--text-color);
    letter-spacing: 0.1px;
}

/* ===== 表格 ===== */
.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 16px;
    border-radius: var(--radius-md);
    overflow: hidden;
}
.data-table th, .data-table td {
    padding: 8px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s ease;
}
.data-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    white-space: nowrap;
}
.data-table th:first-child { border-top-left-radius: var(--radius-sm); }
.data-table th:last-child { border-top-right-radius: var(--radius-sm); }
.data-table tbody tr {
    transition: all 0.2s ease;
}
.data-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.03);
    transform: scale(1.002);
}
.data-table tbody tr:last-child td:first-child { border-bottom-left-radius: var(--radius-sm); }
.data-table tbody tr:last-child td:last-child { border-bottom-right-radius: var(--radius-sm); }

/* 紧凑表格 */
.table-compact th, .table-compact td { padding: 6px 10px; font-size: 12px; }

/* ===== 消息提示 ===== */
.message {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    font-size: 13px;
    font-weight: 500;
    animation: slideIn 0.3s var(--ease-out-expo);
    display: flex;
    align-items: center;
    gap: 8px;
}
@keyframes slideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
.message-success {
    background: rgba(16, 185, 129, 0.08);
    color: #065F46;
    border: 1px solid rgba(16, 185, 129, 0.15);
    border-left: 4px solid var(--success);
}
.message-error {
    background: rgba(239, 68, 68, 0.08);
    color: #991B1B;
    border: 1px solid rgba(239, 68, 68, 0.15);
    border-left: 4px solid var(--danger);
}
.message-warning {
    background: rgba(245, 158, 11, 0.08);
    color: #92400E;
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-left: 4px solid var(--warning);
}
.message-info {
    background: rgba(59, 130, 246, 0.08);
    color: #1E40AF;
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-left: 4px solid var(--info);
}

/* ===== 状态标签 ===== */
.status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.2px;
    transition: all 0.25s ease;
}
.status::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}
.status-pending {
    background: rgba(239, 68, 68, 0.08);
    color: #991B1B;
    border: 1px solid rgba(239, 68, 68, 0.12);
}
.status-pending::before { background: #EF4444; box-shadow: 0 0 6px rgba(239,68,68,0.4); }
.status-completed {
    background: rgba(16, 185, 129, 0.08);
    color: #065F46;
    border: 1px solid rgba(16, 185, 129, 0.12);
}
.status-completed::before { background: #10B981; box-shadow: 0 0 6px rgba(16,185,129,0.4); }
.status-exception {
    background: rgba(245, 158, 11, 0.08);
    color: #92400E;
    border: 1px solid rgba(245, 158, 11, 0.12);
}
.status-exception::before { background: #F59E0B; box-shadow: 0 0 6px rgba(245,158,11,0.4); }
.status-online { color: var(--success); font-weight: 550; }
.status-expired { color: var(--danger); font-weight: 550; }

/* ===== 登录页 ===== */
.login-container {
    max-width: 380px;
    margin: 60px auto;
    padding: 24px 28px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.6s var(--ease-out-expo);
}
.login-container h2 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--header-text);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
}
.login-container h2::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--gradient-brand);
    border-radius: var(--radius-full);
    margin: 12px auto 0;
}
.login-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.login-form input {
    padding: 13px 16px;
    border-radius: var(--radius-md);
    font-size: 15px;
}
.login-form button {
    padding: 13px;
    font-size: 16px;
    font-weight: 600;
    margin-top: 4px;
}

/* ===== 导航栏 ===== */
.nav-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    position: relative;
    z-index: 5;
    padding: 5px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}
.nav-btn {
    padding: 7px 14px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 12px;
    font-weight: 550;
    transition: all 0.3s var(--ease-out-expo);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 3px;
    letter-spacing: 0.1px;
    position: relative;
    white-space: nowrap;
}
.nav-btn:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.06);
    transform: translateY(-1px);
}
.nav-btn.active {
    background: var(--gradient-brand);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    font-weight: 600;
}
.nav-btn.active:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

/* ===== 统计卡片 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}
.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 14px 16px;
    text-align: center;
    transition: all 0.4s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    border-radius: var(--radius-full) var(--radius-full) 0 0;
    opacity: 0;
    transition: opacity 0.4s var(--ease-out-expo);
}
.stat-card:nth-child(1)::before { background: var(--gradient-brand); }
.stat-card:nth-child(2)::before { background: var(--gradient-success); }
.stat-card:nth-child(3)::before { background: var(--gradient-warning); }
.stat-card:nth-child(4)::before { background: var(--gradient-danger); }
.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}
.stat-card:hover::before { opacity: 1; }
.stat-card h3 {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
.stat-card .value {
    font-size: 26px;
    font-weight: 750;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
    line-height: 1.2;
}
.stat-card:nth-child(2) .value { background: var(--gradient-success); -webkit-background-clip: text; background-clip: text; }
.stat-card:nth-child(3) .value { background: var(--gradient-warning); -webkit-background-clip: text; background-clip: text; }
.stat-card:nth-child(4) .value { background: var(--gradient-danger); -webkit-background-clip: text; background-clip: text; }

/* ===== 工具栏按钮 ===== */
.logout-btn {
    position: fixed;
    top: 14px;
    right: 90px;
    padding: 5px 12px;
    background: rgba(239, 68, 68, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 12px;
    font-weight: 550;
    transition: all 0.3s var(--ease-out-expo);
    z-index: 100;
    box-shadow: 0 2px 12px rgba(239, 68, 68, 0.25);
    letter-spacing: 0.1px;
}
.logout-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.35);
    background: rgba(239, 68, 68, 1);
}
.logout-btn:active {
    transform: translateY(0) scale(0.96);
}

.mode-toggle {
    position: fixed;
    top: 14px;
    right: 20px;
    padding: 5px 12px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--text-color);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 12px;
    font-weight: 550;
    transition: all 0.3s var(--ease-out-expo);
    z-index: 100;
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.1px;
}
.mode-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
    color: var(--primary);
}

/* ===== 模态框 ===== */
.modal-overlay {
    position: fixed;
    z-index: 1000;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.25s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    padding: 32px;
    width: 90%;
    max-width: 520px;
    animation: modalIn 0.35s var(--ease-out-back);
}
@keyframes modalIn {
    from { opacity: 0; transform: translateY(20px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ===== 返回/工具按钮 ===== */
.back-home {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    background: var(--card-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 13px;
    font-weight: 550;
    text-decoration: none;
    transition: all 0.3s var(--ease-out-expo);
}
.back-home:hover {
    border-color: var(--primary-light);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== 分隔线 ===== */
.divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-color), transparent);
    margin: 24px 0;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .container { padding: 16px 12px; }
    .header { padding: 14px 16px; border-radius: var(--radius-lg); }
    .header h1 { font-size: 17px; }
    .card { padding: 12px 14px; border-radius: var(--radius-lg); }
    .nav-bar { gap: 3px; padding: 4px; border-radius: var(--radius-md); overflow-x: auto; }
    .nav-btn { padding: 6px 10px; font-size: 11px; }
    .logout-btn, .mode-toggle { top: 8px; padding: 5px 10px; font-size: 11px; }
    .logout-btn { right: 80px; }
    .login-container { margin: 30px 16px; padding: 20px 18px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .stat-card { padding: 10px 12px; }
    .stat-card .value { font-size: 22px; }
    .data-table { font-size: 12px; }
    .data-table th, .data-table td { padding: 6px 8px; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .header { padding: 12px 14px; }
    .header h1 { font-size: 16px; }
    .card { padding: 10px 12px; }
    .nav-btn { padding: 5px 8px; font-size: 10px; }
    .btn { padding: 6px 12px; font-size: 12px; }
}

/* ===== 无障碍 ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}