/* ============================================
   管理后台 - 样式
   ============================================ */

:root {
    --teal: #009B9C;
    --teal-light: #7AC9CA;
    --teal-bg: #e8f5f5;
    --primary: #2563eb;
    --success: #16a34a;
    --success-bg: #dcfce7;
    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --sidebar-w: 220px;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--gray-100); color: var(--gray-900); min-height: 100vh; }

/* ============================================
   登录页
   ============================================ */
.admin-login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #009B9C 0%, #7AC9CA 50%, #A9F0F7 100%);
}

.login-container {
    width: 100%;
    max-width: 380px;
    padding: 20px;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
    color: #fff;
}

.login-logo {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: rgba(255,255,255,0.25);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 12px;
    color: #fff;
}

.login-header h1 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.login-header p {
    font-size: 14px;
    opacity: 0.85;
}

.login-card {
    background: #fff;
    border-radius: 12px;
    padding: 28px 24px;
    box-shadow: var(--shadow-lg);
}

.login-error {
    display: none;
    background: var(--danger-bg);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    height: 42px;
    padding: 0 12px;
    border: 1.5px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    transition: border 0.2s;
}

.form-input:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(0,155,156,0.1);
}

.btn-login {
    width: 100%;
    height: 44px;
    border: none;
    border-radius: 8px;
    background: linear-gradient(135deg, #009B9C, #7AC9CA);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 8px;
    transition: opacity 0.2s;
}

.btn-login:hover { opacity: 0.9; }
.btn-login:disabled { opacity: 0.6; cursor: not-allowed; }

.login-footer {
    text-align: center;
    margin-top: 24px;
    color: rgba(255,255,255,0.75);
    font-size: 12px;
}

/* ============================================
   管理后台布局
   ============================================ */
.admin-page {
    display: flex;
    min-height: 100vh;
}

/* ── 侧边栏 ── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--gray-900);
    color: #fff;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--teal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 800;
    flex-shrink: 0;
}

.sidebar-header span {
    font-size: 13px;
    font-weight: 600;
    line-height: 1.3;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 6px;
    color: rgba(255,255,255,0.65);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 4px;
    transition: all 0.2s;
}

.nav-item:hover { background: rgba(255,255,255,0.08); color: #fff; }

.nav-item.active {
    background: var(--teal);
    color: #fff;
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.admin-info {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 8px;
}

.admin-name { color: #fff; font-weight: 600; }
.admin-role { font-size: 11px; margin-top: 2px; }

.btn-logout {
    width: 100%;
    padding: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 6px;
    background: transparent;
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-logout:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* ── 主内容区 ── */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    padding: 0;
    min-height: 100vh;
}

.top-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
}

.top-bar h2 { font-size: 18px; font-weight: 700; flex: 1; }

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    padding: 4px;
}

.top-actions { display: flex; gap: 8px; }

/* ── 按钮 ── */
.btn-primary {
    background: var(--teal);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.9; }
.btn-sm { padding: 6px 12px; font-size: 12px; }

.btn-outline {
    background: #fff;
    color: var(--teal);
    border: 1.5px solid var(--teal);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-outline:hover { background: var(--teal-bg); }

.btn-danger {
    background: none;
    color: var(--danger);
    border: 1px solid var(--danger);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-danger:hover { background: var(--danger-bg); }

/* ── 筛选栏 ── */
.filter-bar {
    display: flex;
    gap: 10px;
    padding: 16px 24px;
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    flex-wrap: wrap;
}

.filter-select {
    height: 36px;
    padding: 0 12px;
    border: 1.5px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    background: #fff;
    outline: none;
    min-width: 120px;
}

.filter-select:focus { border-color: var(--teal); }

.filter-input {
    height: 36px;
    padding: 0 12px;
    border: 1.5px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    outline: none;
    flex: 1;
    min-width: 180px;
}

.filter-input:focus { border-color: var(--teal); }

/* ── 统计卡片 ── */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding: 20px 24px;
}

.stat-card {
    background: #fff;
    border-radius: 10px;
    padding: 16px 20px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--gray-400);
}

.stat-paid { border-left-color: var(--success); }
.stat-unpaid { border-left-color: var(--warning); }
.stat-amount { border-left-color: var(--teal); }

.stat-value { font-size: 26px; font-weight: 700; color: var(--gray-900); }
.stat-label { font-size: 13px; color: var(--gray-500); margin-top: 4px; }

/* ── 表格 ── */
.table-wrapper {
    padding: 0 24px 20px;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table th {
    background: var(--gray-50);
    padding: 12px 14px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    white-space: nowrap;
}

.data-table td {
    padding: 12px 14px;
    font-size: 13px;
    border-top: 1px solid var(--gray-100);
    white-space: nowrap;
}

.data-table tr:hover { background: var(--gray-50); }

.table-empty {
    text-align: center;
    color: var(--gray-400);
    padding: 40px !important;
}

.status-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.status-UNPAID { background: var(--warning-bg); color: #b45309; }
.status-PAID { background: var(--success-bg); color: var(--success); }
.status-CANCELLED { background: var(--danger-bg); color: var(--danger); }

/* ── 分页 ── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 16px 24px 24px;
}

.page-btn {
    padding: 6px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    background: #fff;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.page-btn:hover { border-color: var(--teal); color: var(--teal); }
.page-btn.active { background: var(--teal); color: #fff; border-color: var(--teal); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.page-info { font-size: 13px; color: var(--gray-500); margin: 0 8px; }

/* ── 弹窗 ── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.modal-overlay.show { display: flex; }

.modal-content {
    background: #fff;
    border-radius: 12px;
    width: 90%;
    max-width: 560px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 { font-size: 16px; font-weight: 700; }

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--gray-400);
    cursor: pointer;
    padding: 4px;
}

.modal-body { padding: 20px; overflow-y: auto; }

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 20px;
}

.detail-item { }
.detail-label { font-size: 12px; color: var(--gray-500); margin-bottom: 2px; }
.detail-value { font-size: 14px; font-weight: 600; }

/* ── 二维码页面 ── */
.page-desc {
    font-size: 13px;
    color: var(--gray-500);
    padding: 16px 24px 0;
    line-height: 1.6;
}

.qrcode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    padding: 20px 24px;
}

.qrcode-card {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: box-shadow 0.2s;
}

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

.qrcode-img {
    width: 160px;
    height: 160px;
    margin: 0 auto 12px;
    display: block;
    border: 1px solid var(--gray-100);
    border-radius: 8px;
}

.qrcode-doctor {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.qrcode-lung {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
}

.qrcode-lung-FULL { background: var(--teal-bg); color: var(--teal); }
.qrcode-lung-HALF { background: #dbeafe; color: #2563eb; }

.qrcode-price {
    font-size: 18px;
    font-weight: 700;
    color: var(--danger);
    margin-bottom: 12px;
}

.qrcode-url {
    font-size: 11px;
    color: var(--gray-400);
    word-break: break-all;
    margin-bottom: 12px;
}

.qrcode-actions { display: flex; gap: 8px; justify-content: center; }

/* ── 加载状态 ── */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--gray-400);
    font-size: 14px;
}

/* ── Toast ── */
.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: #fff;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    z-index: 300;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.toast.show { opacity: 1; }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* ── 表单增强 ── */
.form-error {
    display: none;
    background: var(--danger-bg);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 16px;
}

.required { color: var(--danger); }

.form-group-row {
    display: flex;
    gap: 12px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    justify-content: flex-end;
}

.form-actions .btn-primary { width: auto; padding: 8px 24px; }
.form-actions .btn-outline { padding: 8px 20px; }

.checkbox-group {
    max-height: 180px;
    overflow-y: auto;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    padding: 8px 12px;
    background: var(--gray-50);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 0;
    font-size: 13px;
    cursor: pointer;
}

.checkbox-item:hover { color: var(--teal); }

.checkbox-item input[type="checkbox"] {
    accent-color: var(--teal);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* ── 响应式 ── */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .menu-toggle {
        display: block;
    }
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
    .filter-bar {
        flex-direction: column;
    }
    .filter-select, .filter-input {
        width: 100%;
    }
    .detail-grid {
        grid-template-columns: 1fr;
    }
    .qrcode-grid {
        grid-template-columns: 1fr;
    }
}