:root {
    --primary: #1E3A5F;
    --primary-light: #2C5282;
    --primary-dark: #15294A;
    --white: #FFFFFF;
    --gray-bg: #F8F9FA;
    --border: #E5E7EB;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --success: #27AE60;
    --danger: #E74C3C;
    --warning: #F59E0B;
    --info: #3498DB;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gray-bg);
    color: var(--text-primary);
    font-size: 14px;
}

/* Layout */
.app-layout { display: flex; min-height: 100vh; }
.sidebar {
    width: 220px;
    background: var(--primary);
    color: #fff;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: width 0.3s;
}
.sidebar.collapsed { width: 64px; }
.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-header .logo {
    width: 36px; height: 36px;
    background: rgba(255,255,255,0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 16px;
    flex-shrink: 0;
}
.sidebar-header .title {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.3;
}
.sidebar-menu { padding: 8px 0; }
.menu-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    cursor: pointer;
    transition: all 0.2s;
    color: rgba(255,255,255,0.8);
    border-left: 3px solid transparent;
    text-decoration: none;
}
.menu-item:hover { background: var(--primary-light); color: #fff; }
.menu-item.active { background: var(--primary-light); color: #fff; border-left-color: #fff; }
.menu-item svg { width: 20px; height: 20px; margin-right: 12px; flex-shrink: 0; }
.menu-item span { white-space: nowrap; overflow: hidden; }

/* Top Header */
.top-header {
    position: fixed;
    top: 0; left: 220px; right: 0;
    height: 56px;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 99;
}
.top-header .left { display: flex; align-items: center; gap: 16px; }
.top-header .page-title { font-size: 18px; font-weight: 600; color: var(--primary); }
.top-header .right { display: flex; align-items: center; gap: 16px; }
.user-info { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.user-info .avatar {
    width: 32px; height: 32px;
    background: var(--primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 600; font-size: 14px;
}
.btn-logout {
    padding: 6px 16px;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
}
.btn-logout:hover { border-color: var(--danger); color: var(--danger); }

/* Content Area */
.content-area {
    margin-left: 220px;
    margin-top: 56px;
    padding: 24px;
    min-height: calc(100vh - 56px);
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    padding: 20px;
    margin-bottom: 16px;
}
.card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
    margin-bottom: 16px;
}
.filter-item { display: flex; flex-direction: column; gap: 4px; }
.filter-item label { font-size: 13px; color: var(--text-secondary); font-weight: 500; }
.filter-item input, .filter-item select {
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    background: #fff;
    min-width: 140px;
}
.filter-item input:focus, .filter-item select:focus {
    outline: none;
    border-color: var(--primary);
}
.btn {
    height: 36px;
    padding: 0 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: 0.9; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-default { background: #fff; color: var(--text-primary); border: 1px solid var(--border); }
.btn-default:hover { background: var(--gray-bg); }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; }

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.toolbar .left { font-size: 14px; color: var(--text-secondary); }
.toolbar .right { display: flex; gap: 8px; }

/* Table */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    background: var(--primary);
    color: #fff;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
}
.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.data-table tr:nth-child(even) { background: var(--gray-bg); }
.data-table tr:hover { background: #EDF2F7; }
.data-table .actions { display: flex; gap: 8px; }
.data-table .actions a {
    color: var(--primary);
    text-decoration: none;
    cursor: pointer;
}
.data-table .actions a.delete { color: var(--danger); }
.data-table .actions a:hover { text-decoration: underline; }

/* Tags */
.tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}
.tag-green { background: #DEF7EC; color: #046C4E; }
.tag-yellow { background: #FEF3C7; color: #92400E; }
.tag-red { background: #FEE2E2; color: #991B1B; }
.tag-orange { background: #FFEDD5; color: #9A3412; }
.tag-blue { background: #DBEAFE; color: #1E40AF; }

/* Pagination */
.pagination { display: flex; justify-content: center; align-items: center; gap: 4px; margin-top: 16px; }
.pagination button {
    min-width: 32px; height: 32px;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
}
.pagination button:hover { background: var(--gray-bg); }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination button:disabled { opacity: 0.5; cursor: not-allowed; }

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.modal-content {
    background: #fff;
    border-radius: 12px;
    width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-header h3 { font-size: 18px; font-weight: 600; }
.modal-close { font-size: 24px; cursor: pointer; color: var(--text-secondary); background: none; border: none; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 24px; }
.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Form */
.form-row { display: flex; gap: 16px; margin-bottom: 16px; }
.form-row .form-group { flex: 1; margin-bottom: 0; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text-primary); }
.form-group label .required { color: var(--danger); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}
.form-group textarea { height: auto; padding: 8px 12px; min-height: 60px; resize: vertical; }
.form-group input[readonly] { background: var(--gray-bg); }
.radio-group { display: flex; gap: 20px; }
.radio-group label { display: flex; align-items: center; gap: 6px; font-weight: 400; cursor: pointer; }
.radio-group input { width: auto; height: auto; }

/* Section */
.form-section { margin-bottom: 20px; }
.form-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
}

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.stat-card .stat-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-card .stat-value.danger { color: var(--danger); }
.stat-card .stat-change { font-size: 12px; margin-top: 4px; }
.stat-card .stat-change.up { color: var(--success); }
.stat-card .stat-change.down { color: var(--danger); }

/* Charts Grid */
.charts-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.chart-container { height: 320px; }

/* Reminder cards */
.reminder-cards { display: flex; gap: 12px; overflow-x: auto; padding-bottom: 8px; margin-bottom: 16px; }
.reminder-card {
    min-width: 240px;
    background: var(--white);
    border-radius: 8px;
    padding: 16px;
    border-left: 4px solid var(--warning);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.reminder-card.overdue { border-left-color: var(--danger); }
.reminder-card .name { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.reminder-card .date { font-size: 13px; color: var(--text-secondary); }
.reminder-card .diseases { display: flex; gap: 4px; margin-top: 8px; flex-wrap: wrap; }
.reminder-card .disease-tag {
    font-size: 11px;
    padding: 2px 8px;
    background: var(--gray-bg);
    border-radius: 4px;
    color: var(--text-secondary);
}
.reminder-card .action { margin-top: 10px; }
.reminder-card .action a { font-size: 13px; color: var(--primary); cursor: pointer; }

/* Upload area */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}
.upload-area:hover { border-color: var(--primary); background: #F0F5FF; }
.upload-area svg { width: 48px; height: 48px; color: var(--text-secondary); margin-bottom: 12px; }
.upload-area p { color: var(--text-secondary); font-size: 14px; }

/* Permission Tree */
.perm-tree { }
.perm-tree-item { padding: 8px 0; }
.perm-tree-item .perm-label { display: flex; align-items: center; gap: 8px; }
.perm-tree-item .perm-children { padding-left: 28px; }
.perm-tree-item input[type="checkbox"] { width: 16px; height: 16px; }

/* Confirm Dialog */
.confirm-dialog { max-width: 400px; }
.confirm-dialog p { color: var(--text-secondary); line-height: 1.6; }

/* Toast */
.toast {
    position: fixed;
    top: 20px; right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    z-index: 2000;
    animation: slideIn 0.3s ease;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive */
@media (max-width: 1200px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .charts-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .sidebar { width: 64px; }
    .sidebar .title, .menu-item span { display: none; }
    .content-area { margin-left: 64px; }
    .top-header { left: 64px; }
    .stats-grid { grid-template-columns: 1fr; }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .form-row { flex-direction: column; }
}

/* Utility */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0 !important; }
.mt-16 { margin-top: 16px; }