:root {
    --primary: #2c7a7b;
    --primary-dark: #234e52;
    --danger: #e53e3e;
    --success: #38a169;
    --warning: #d69e2e;
    --light: #f7fafc;
    --dark: #1a202c;
    --border: #e2e8f0;
    --radius: 6px;
}

* { box-sizing: border-box; }
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background: #f0f4f8;
    color: var(--dark);
}
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px;
}
.site-header {
    text-align: center;
    padding: 30px 0;
}
.site-header h1 { margin: 0; color: var(--primary); }
.site-header p { color: #718096; margin: 6px 0 0; }

.card, .search-box, .result-card, .login-box {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 24px;
    margin-bottom: 20px;
}
.search-box { max-width: 480px; margin: 40px auto; text-align: center; }

.form-group { margin-bottom: 16px; text-align: left; }
.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 15px;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
}
textarea.form-control { min-height: 90px; resize: vertical; }

.btn {
    display: inline-block;
    padding: 10px 16px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    transition: background .2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #edf2f7; color: var(--dark); }
.btn-secondary:hover { background: #e2e8f0; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #c53030; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #2f855a; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-sm { padding: 6px 10px; font-size: 13px; }
.btn-block { width: 100%; }

.alert {
    padding: 12px;
    border-radius: var(--radius);
    margin-bottom: 16px;
}
.alert-info { background: #ebf8ff; color: #2c5282; }
.alert-success { background: #f0fff4; color: #276749; }
.alert-danger { background: #fff5f5; color: #c53030; }
.alert-warning { background: #fffff0; color: #744210; }

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}
.table th, .table td {
    border: 1px solid var(--border);
    padding: 10px;
    text-align: left;
}
.table th { background: #f7fafc; }

.details-table th { width: 35%; background: #f7fafc; }

.visit-box {
    background: #f7fafc;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
}
.visit-box h4 { margin-top: 0; color: var(--primary-dark); }

.medicine-box {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    margin-top: 10px;
}
.medicine-box ul { margin: 8px 0 0 18px; padding: 0; }

.site-footer { text-align: center; color: #a0aec0; font-size: 13px; margin-top: 20px; }

.admin-wrap { display: flex; min-height: 100vh; }
.admin-sidebar {
    width: 240px;
    background: var(--dark);
    color: #fff;
    padding: 20px;
}
.admin-sidebar h2 { margin: 0 0 20px; font-size: 20px; }
.admin-sidebar ul { list-style: none; padding: 0; }
.admin-sidebar li { margin-bottom: 10px; }
.admin-sidebar a { color: #cbd5e0; text-decoration: none; }
.admin-sidebar a:hover { color: #fff; }
.admin-content { flex: 1; padding: 24px; background: #f0f4f8; }

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.actions a { margin-right: 6px; }

.pagination a {
    display: inline-block;
    padding: 6px 12px;
    border: 1px solid var(--border);
    margin-right: 4px;
    text-decoration: none;
    color: var(--dark);
    border-radius: var(--radius);
}
.pagination a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

@media (max-width: 768px) {
    .admin-wrap { flex-direction: column; }
    .admin-sidebar { width: 100%; }
}