/* =========================
   Base
========================= */

:root {
  --bg: #f3f4f6;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #0f172a;
  --muted: #6b7280;
  --primary: #0ea5e9;
  --primary-hover: #0284c7;
  --danger: #ef4444;
  --radius: 14px;
  --radius-pill: 999px;
  --shadow: 0 6px 18px rgba(15,23,42,.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 16px;
  background: var(--bg);
  font-family: system-ui, -apple-system, "Inter", sans-serif;
  color: var(--text);
}

/* =========================
   Headings
========================= */

h1, h2 {
  margin: 0 0 12px;
  font-weight: 600;
}

h1 {
  text-align: center;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 18px 0;
}

/* =========================
   Alerts
========================= */

.alert {
  padding: 10px 12px;
  border-radius: 12px;
  margin-bottom: 12px;
  font-size: .9rem;
}

.alert.success {
  background: #ecfdf5;
  border: 1px solid #bbf7d0;
  color: #166534;
}

.alert.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

/* =========================
   Form
========================= */

form {
  background: var(--card);
  padding: 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  max-width: 520px;

  /* ✅ CENTER IT */
  margin: 0 auto;
}

label {
  display: block;
  font-size: .85rem;
  color: var(--muted);
  margin-bottom: 10px;
}

input,
select {
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid #cbd5e1;
  background: #f9fafb;
  font-size: .9rem;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--primary);
  background: #fff;
}

/* Submit */
button[type="submit"] {
  margin-top: 10px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  border: 0;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-size: .9rem;
}

button[type="submit"]:hover {
  background: var(--primary-hover);
}

/* =========================
   Table
========================= */

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

thead {
  background: #f9fafb;
}

th, td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  font-size: .85rem;
  white-space: nowrap;
}

th {
  color: #475569;
  font-weight: 600;
}

tr:last-child td {
  border-bottom: 0;
}

/* =========================
   Edit Button
========================= */

.btn-edit-parent {
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--primary);
  background: transparent;
  color: var(--primary);
  cursor: pointer;
  font-size: .8rem;
}

.btn-edit-parent:hover {
  background: #e0f2fe;
}

/* =========================
   Modal (matches PHP)
========================= */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.modal-card {
  background: #fff;
  width: min(520px, 100%);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,.25);
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-x {
  border: 0;
  background: transparent;
  font-size: 26px;
  cursor: pointer;
}

.modal-label {
  display: block;
  margin: 10px 0 6px;
  font-weight: 600;
}

.modal-input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #ddd;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 14px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border: 0;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
}

.btn-secondary {
  background: #fff;
  border: 1px solid #ddd;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
}

.modal-error {
  background: #fee2e2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 10px;
  border-radius: 12px;
  margin-bottom: 10px;
}

.admin-parent-header {
  margin: 16px 0 24px;
  padding: 14px;
  background: #f6f7f9;
  border-radius: 14px;
}

.admin-parent-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-admin {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.btn-admin.primary {
  background: #2563eb;
  color: #fff;
}

.btn-admin.secondary {
  background: #16a34a;
  color: #fff;
}

.btn-admin.ghost {
  background: #fff;
  color: #333;
  border: 1px solid #ddd;
}