/* ======================== CSS Variables ======================== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #e0e7ff;
    --success: #22c55e;
    --success-light: #dcfce7;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #0ea5e9;
    --info-light: #e0f2fe;
    --ai: #8b5cf6;
    --ai-light: #f3e8ff;
    --bg: #f1f5f9;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
    --shadow: 0 1px 3px 0 rgba(0,0,0,0.08), 0 1px 2px 0 rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.03);
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
}

/* ======================== Reset ======================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ======================== Navbar ======================== */
.navbar {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: #fff;
    padding: 14px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.navbar h1 {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.navbar .user-info {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 13px;
}

.navbar .user-info span {
    opacity: 0.92;
}

/* ======================== Buttons ======================== */
.btn {
    display: inline-block;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.btn-success {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
}

.btn-danger {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
}

.btn-warning {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
}

.btn-ai {
    background: linear-gradient(135deg, var(--ai) 0%, #7c3aed 100%);
}

.btn-logout {
    background: rgba(239, 68, 68, 0.85);
    padding: 6px 16px;
    font-size: 13px;
    border-radius: 8px;
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 1);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
    border-radius: 8px;
}

/* ======================== Container ======================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px;
}

/* ======================== Card ======================== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card h2 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card h3 {
    font-size: 15px;
    font-weight: 600;
    margin: 14px 0 8px;
    color: #334155;
}

.card h4 {
    font-size: 14px;
    font-weight: 600;
    margin: 10px 0 6px;
    color: #334155;
}

/* ======================== Tabs ======================== */
.tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    background: var(--card-bg);
    padding: 6px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.tab {
    padding: 8px 18px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-muted);
    border-radius: var(--radius);
    transition: all 0.25s ease;
    font-weight: 500;
    user-select: none;
}

.tab.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
}

.tab:hover:not(.active) {
    background: var(--primary-light);
    color: var(--primary-dark);
}

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

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ======================== Forms ======================== */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 5px;
    font-weight: 500;
}

/* AI训练部位多选选项 */
.ai-area-opt {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border: 1px solid #ddd;
    border-radius: 16px;
    font-size: 13px;
    cursor: pointer;
    background: #fff;
    user-select: none;
}
.ai-area-opt:has(input:checked) {
    background: #e8f4fd;
    border-color: #3498db;
    color: #2c7ab8;
}
.ai-area-opt input {
    margin: 0;
    accent-color: #3498db;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 9px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
    background: #fff;
    color: var(--text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
    font-family: inherit;
}

.form-row {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 150px;
}

/* ======================== Table ======================== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

table th, table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

table th {
    background: #f8fafc;
    font-weight: 600;
    color: var(--text);
    position: sticky;
    top: 0;
    font-size: 13px;
    letter-spacing: 0.2px;
}

table tr:hover {
    background-color: #f8fafc;
}

table tr:last-child td {
    border-bottom: none;
}

/* ======================== Alerts ======================== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 12px;
    font-size: 13px;
    border-left: 4px solid;
    line-height: 1.5;
}

.alert-info {
    background: var(--info-light);
    color: #075985;
    border-left-color: var(--info);
}

.alert-warning {
    background: var(--warning-light);
    color: #92400e;
    border-left-color: var(--warning);
}

.alert-danger {
    background: var(--danger-light);
    color: #991b1b;
    border-left-color: var(--danger);
}

.alert-success {
    background: var(--success-light);
    color: #166534;
    border-left-color: var(--success);
}

.ai-disclaimer {
    font-size: 12px;
    color: var(--text-light);
    padding: 6px 0;
    font-style: italic;
}

.medical-disclaimer {
    font-size: 12px;
    color: var(--text-light);
    padding: 4px 0;
}

/* ======================== Badges ======================== */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-success { background: var(--success); color: #fff; }
.badge-warning { background: var(--warning); color: #fff; }
.badge-danger  { background: var(--danger); color: #fff; }
.badge-info    { background: var(--info); color: #fff; }
.badge-secondary { background: #64748b; color: #fff; }

/* ======================== Grid ======================== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

/* ======================== Metric Cards ======================== */
.metric-card {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: var(--radius);
    padding: 18px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all 0.25s ease;
}

.metric-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.metric-card .label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
}

.metric-card .value {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.2;
}

.metric-card .unit {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 2px;
}

.metric-card .hint {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ======================== Photos ======================== */
.photo-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.photo-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.25s ease;
}

.photo-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.photo-item img {
    width: 200px;
    height: 250px;
    object-fit: cover;
    display: block;
}

.photo-item .photo-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.75), rgba(0,0,0,0));
    color: #fff;
    padding: 16px 10px 8px;
    font-size: 12px;
}

.photo-compare {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.photo-compare .photo-item {
    flex-shrink: 0;
}

/* ======================== Login ======================== */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #312e81 50%, #4c1d95 100%);
    position: relative;
    overflow: hidden;
}

.login-wrapper::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(99,102,241,0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(139,92,246,0.15) 0%, transparent 50%);
}

.login-box {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: 44px 36px;
    width: 400px;
    max-width: 90vw;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    position: relative;
    z-index: 1;
}

.login-box h1 {
    text-align: center;
    font-size: 24px;
    color: var(--text);
    margin-bottom: 8px;
    font-weight: 800;
}

.login-box .subtitle {
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.login-box .btn {
    width: 100%;
    padding: 13px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
}

.login-error {
    text-align: center;
    color: var(--danger);
    font-size: 13px;
    margin-top: 12px;
    min-height: 20px;
}

/* ======================== Exercise Row ======================== */
.exercise-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    padding: 10px;
    background: #f8fafc;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.exercise-row input,
.exercise-row select {
    padding: 7px 10px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
}

.exercise-row input:focus,
.exercise-row select:focus {
    border-color: var(--primary);
}

/* ======================== Checkin ======================== */
.checkin-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 8px;
    transition: all 0.2s;
    background: #fff;
}

.checkin-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.checkin-item.completed {
    background: var(--success-light);
    border-color: #bbf7d0;
}

.checkin-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary);
}

.checkin-note {
    border: 1.5px solid var(--border);
    border-radius: 8px;
    padding: 6px 10px;
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
}

.checkin-note:focus {
    border-color: var(--primary);
}

/* ======================== Chart ======================== */
.chart-container {
    position: relative;
    height: 280px;
    width: 100%;
}

/* ======================== AI Result ======================== */
.ai-result {
    background: linear-gradient(135deg, var(--ai-light) 0%, #fdf4ff 100%);
    border: 1px solid #e9d5ff;
    border-radius: var(--radius);
    padding: 18px;
    margin-top: 12px;
}

.ai-result h4 {
    color: #7c3aed;
    font-size: 15px;
    margin-bottom: 10px;
    font-weight: 700;
}

.ai-result .cache-badge {
    display: inline-block;
    background: var(--ai);
    color: #fff;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    margin-left: 8px;
    font-weight: 600;
}

/* ======================== Loading ======================== */
.loading {
    text-align: center;
    padding: 28px;
    color: var(--text-muted);
    font-size: 14px;
}

.loading::after {
    content: "";
    display: block;
    width: 28px;
    height: 28px;
    margin: 12px auto 0;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ======================== Utility ======================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--text-muted); }
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.hidden { display: none; }
.w-full { width: 100%; }

/* ======================== Responsive ======================== */
@media (max-width: 1024px) {
    .container { padding: 18px; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .navbar { padding: 10px 14px; flex-wrap: wrap; gap: 6px; }
    .navbar h1 { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 55vw; }
    .navbar .user-info { font-size: 12px; gap: 8px; }
    .navbar .user-info span { max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

    .container { padding: 14px; }

    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        flex-wrap: nowrap;
        gap: 4px;
    }
    .tabs::-webkit-scrollbar { height: 3px; }
    .tabs::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
    .tab { padding: 7px 14px; font-size: 13px; white-space: nowrap; flex-shrink: 0; }

    .card { padding: 16px; border-radius: var(--radius); margin-bottom: 14px; }
    .card h2 { font-size: 15px; margin-bottom: 12px; padding-bottom: 8px; }
    .card h3 { font-size: 13px; }

    .form-row { flex-direction: column; gap: 10px; }
    .form-row .form-group { min-width: 100%; }
    .form-group input, .form-group select, .form-group textarea { font-size: 15px; padding: 10px 12px; }

    .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { min-width: 500px; font-size: 12px; }
    table th, table td { padding: 7px 8px; white-space: nowrap; }

    .exercise-row { flex-direction: column; align-items: stretch; gap: 6px; }
    .exercise-row input, .exercise-row select { width: 100% !important; font-size: 14px; padding: 8px 10px; }
    .exercise-row .btn-sm { width: 100%; text-align: center; }

    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 10px; }
    .metric-card { padding: 14px; }
    .metric-card .value { font-size: 22px; }

    .photo-item img { width: 140px; height: 175px; }
    .photo-compare { gap: 10px; }

    .login-box { width: 92%; max-width: 380px; padding: 28px 22px; border-radius: var(--radius-lg); }
    .login-box h1 { font-size: 20px; }

    .chart-container { height: 200px; }

    .btn { padding: 9px 16px; font-size: 13px; }
    .btn-sm { padding: 5px 10px; font-size: 12px; }

    .ai-result { padding: 14px; font-size: 13px; }
    .ai-result h4 { font-size: 14px; }

    .checkin-item { padding: 8px 10px; font-size: 13px; flex-wrap: wrap; }
    .checkin-item .checkin-note, .checkin-item input[type="text"] { width: 100% !important; margin-top: 6px; }

    .alert { padding: 9px 12px; font-size: 12px; }

    .mt-20 { margin-top: 14px; }
    .mb-20 { margin-bottom: 14px; }
}

@media (max-width: 480px) {
    .navbar h1 { font-size: 12px; max-width: 45vw; }
    .navbar .user-info span { display: none; }
    .navbar .user-info::before { content: "\1F464"; font-size: 16px; }
    .tab { padding: 6px 10px; font-size: 12px; }
    .card { padding: 12px 10px; }
    .card h2 { font-size: 14px; }
    .photo-item img { width: 110px; height: 140px; }
    .metric-card .value { font-size: 20px; }
    .chart-container { height: 180px; }
    .login-box { padding: 24px 18px; }
    .login-box h1 { font-size: 18px; }
}

/* ======================== UI 美化增强（桌面质感 + 移动端体验） ======================== */

/* 背景质感：轻微网格 + 顶部渐变光晕 */
body {
    background-color: var(--bg);
    background-image:
        radial-gradient(circle at 15% 0%, rgba(99,102,241,0.06) 0%, transparent 40%),
        radial-gradient(circle at 85% 100%, rgba(139,92,246,0.05) 0%, transparent 45%);
    background-attachment: fixed;
}

/* Navbar：更柔和的渐变与底部描边 */
.navbar {
    background: linear-gradient(120deg, #0f172a 0%, #1e293b 45%, #312e81 100%);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.navbar h1 { letter-spacing: 0.4px; }
.navbar .user-info span {
    background: rgba(255,255,255,0.12);
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 600;
}

/* Card：更精致阴影与 hover 浮起 */
.card {
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(226,232,240,0.8);
}
.card:hover { box-shadow: var(--shadow-lg); }

.card h2::before {
    content: "";
    display: inline-block;
    width: 4px;
    height: 16px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--primary), var(--ai));
    flex-shrink: 0;
}

/* Tabs：桌面激活 tab 增加下划线指示，hover 更明显 */
.tab { position: relative; }
.tab.active::after {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 2px;
    width: 22px;
    height: 3px;
    border-radius: 2px;
    background: rgba(255,255,255,0.85);
}
.tab:hover:not(.active) { transform: translateY(-1px); }

/* 表格：斑马纹 + 表头渐变 */
table tbody tr:nth-child(even) { background: #fafbfc; }
table th {
    background: linear-gradient(180deg, #f1f5f9, #e8edf3);
    border-bottom: 2px solid var(--border);
}

/* 按钮：按下的触感反馈 */
.btn:active { transform: scale(0.96); }

/* 全局滚动条美化（桌面 WebKit） */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* 图片 hover 缩放微动效 */
.photo-item img { transition: transform 0.3s ease; }
.photo-item:hover img { transform: scale(1.04); }

/* ======================== 移动端体验增强 ======================== */

/* 中屏：指标卡保持两列更紧凑 */
@media (max-width: 900px) and (min-width: 481px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* 手机端：tab 栏增加左右淡出提示可滑动 */
@media (max-width: 768px) {
    .tabs {
        mask-image: linear-gradient(to right, transparent 0, #000 14px, #000 calc(100% - 14px), transparent 100%);
        -webkit-mask-image: linear-gradient(to right, transparent 0, #000 14px, #000 calc(100% - 14px), transparent 100%);
        scroll-snap-type: x proximity;
    }
    .tab { scroll-snap-align: start; }

    /* 表格：手机端字号与行高更紧凑，保留横向滑动 */
    table th, table td { padding: 8px 10px; }

    /* 指标卡在窄屏双列展示 */
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }

    /* 主要操作按钮更大、更易点按 */
    .btn { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; }
    .btn-sm { min-height: 30px; }

    /* 照片网格自适应宽度 */
    .photo-compare { scroll-snap-type: x proximity; }
    .photo-compare .photo-item { scroll-snap-align: start; }

    /* 距离顶部吸顶时留出安全区 */
    .navbar { padding-top: calc(10px + env(safe-area-inset-top)); }
    .container { padding-bottom: calc(14px + env(safe-area-inset-bottom)); }
}

/* 小屏：指标卡与照片进一步收窄 */
@media (max-width: 480px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .grid-2 { grid-template-columns: 1fr; gap: 8px; }
    .metric-card { padding: 12px 8px; }
    .metric-card .value { font-size: 18px; }
    .metric-card .label { font-size: 11px; }
    .alert { padding: 8px 10px; }
    .table-wrapper { margin: 0 -4px; border-radius: 8px; }
}


/* ============ 日期折叠卡片（当日展开 / 历史折叠） ============ */
.date-fold { border-radius: 10px; overflow: hidden; }
.date-fold + .date-fold { margin-top: 10px; }
.date-fold-header {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 14px; cursor: pointer; user-select: none;
    background: linear-gradient(135deg, #f0f4ff, #f7f9fc);
    border-left: 4px solid #6c5ce7;
    transition: background .2s;
}
.date-fold-header:hover { background: #e8eefb; }
.date-fold-header .fold-arrow {
    display: inline-block; transition: transform .25s;
    color: #6c5ce7; font-size: 13px; width: 14px;
}
.date-fold.open .fold-arrow { transform: rotate(90deg); }
.date-fold-header .fold-date { font-weight: 700; font-size: 14px; color: #2d3436; }
.date-fold-header .fold-count {
    background: #6c5ce7; color: #fff; font-size: 11px;
    border-radius: 10px; padding: 1px 8px; font-weight: 600;
}
.date-fold-header .fold-today {
    background: #27ae60; color: #fff; font-size: 11px;
    border-radius: 10px; padding: 1px 8px; font-weight: 600;
}
.date-fold-body { padding: 10px 14px; border-top: 1px dashed #dde3ee; background: #fff; }
.date-fold .fold-tip { color: #9aa3b5; font-size: 12px; margin: 0; }

/* ============ 全局精修（最终美化） ============ */
:root {
    --radius: 10px;
    --shadow-sm: 0 1px 3px rgba(20,30,60,.08);
    --shadow-md: 0 6px 20px rgba(20,30,60,.10);
}
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
.card { border-radius: 12px; box-shadow: var(--shadow-sm); }
.card:hover { box-shadow: var(--shadow-sm); }
.btn { border-radius: 8px; transition: all .18s ease; box-shadow: 0 1px 2px rgba(20,30,60,.06); }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn:active { transform: translateY(0); }
input[type="text"], input[type="number"], input[type="date"], input[type="password"], input[type="url"], select, textarea {
    border-radius: 8px; transition: border-color .2s, box-shadow .2s;
}
input:focus, select:focus, textarea:focus {
    outline: none; border-color: #6c5ce7 !important; box-shadow: 0 0 0 3px rgba(108,92,231,.12);
}
h1, h2, h3, h4 { letter-spacing: .2px; }
.table-wrapper { border-radius: 10px; }
th { letter-spacing: .5px; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: #c3cbe0; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a8b3d0; }
/* 登录页精修 */
.login-wrapper { background: radial-gradient(1200px 600px at 15% 10%, rgba(108,92,231,.16), transparent 60%),
    radial-gradient(1000px 500px at 85% 90%, rgba(41,182,246,.14), transparent 55%), #f0f2f8; }
.login-box { border-radius: 16px; box-shadow: 0 12px 40px rgba(20,30,60,.14); border: 1px solid rgba(255,255,255,.7); }
.login-box .btn { width: 100%; padding: 12px; font-size: 15px; font-weight: 600; }
/* 空状态提示更柔和 */
.text-muted { color: #8a93a6; }
/* 折叠卡片与表格间距 */
.date-fold-body table { margin: 0; }
/* AI 结果卡片 */
.ai-result, .card[class*="background:#e8f5e9"], .card[style*="e8f5e9"] { border-radius: 10px; }