*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue: #1a5fa8;
  --blue-dark: #134a86;
  --blue-light: #e8f0fa;
  --green: #2e7d32;
  --green-bg: #e8f5e9;
  --red: #b71c1c;
  --red-bg: #ffebee;
  --grey: #6b7280;
  --grey-light: #f4f6f9;
  --border: #d1d5db;
  --text: #1a1a2e;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--grey-light);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.5;
}

header {
  background: var(--blue);
  color: white;
  padding: 24px 0;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}
header h1 { font-size: 1.6rem; font-weight: 700; }
.header-sub { margin-top: 4px; opacity: 0.85; font-size: 0.95rem; }

main {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 20px;
}

.loading { text-align: center; color: var(--grey); padding: 60px; font-size: 1rem; }

/* Clinic card */
.clinic-card {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 28px;
  overflow: hidden;
}
.clinic-header {
  background: var(--blue);
  color: white;
  padding: 16px 20px;
}
.clinic-header h2 { font-size: 1.15rem; font-weight: 700; }
.clinic-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 6px;
  font-size: 0.875rem;
  opacity: 0.92;
}
.clinic-meta span::before { margin-right: 4px; }

.clinic-body { padding: 20px; }

/* Dates grid */
.dates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
  margin-top: 4px;
}
.date-cell {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  text-align: center;
  font-size: 0.875rem;
}
.date-cell .date-label { font-weight: 600; margin-bottom: 6px; display: block; }

.date-cell.free { background: var(--green-bg); border-color: #a5d6a7; }
.date-cell.occupied { background: var(--red-bg); border-color: #ef9a9a; color: var(--red); }

.btn-aanmelden {
  background: var(--green);
  color: white;
  border: none;
  border-radius: 4px;
  padding: 5px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  width: 100%;
}
.btn-aanmelden:hover { background: #1b5e20; }

.bezet-label {
  color: var(--red);
  font-weight: 600;
  font-size: 0.85rem;
}
.bezet-names {
  display: block;
  color: var(--red);
  font-size: 0.78rem;
  margin-top: 2px;
  opacity: 0.8;
}
.date-cell.no-signup {
  background: #f9f9f9;
  border-color: var(--border);
}
.via-admin-label {
  color: var(--grey);
  font-size: 0.78rem;
  font-style: italic;
}

/* Modal */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 20px;
  z-index: 100;
  overflow-y: auto;
}
.modal-overlay.hidden { display: none; }

.modal {
  background: white;
  border-radius: var(--radius);
  padding: 28px;
  width: 100%;
  max-width: 560px;
  position: relative;
  margin: auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.modal h2 { font-size: 1.25rem; margin-bottom: 16px; color: var(--blue); }
.modal-close {
  position: absolute; top: 14px; right: 16px;
  background: none; border: none;
  font-size: 1.5rem; cursor: pointer; color: var(--grey);
  line-height: 1;
}
.modal-close:hover { color: var(--text); }

.modal-info {
  background: var(--blue-light);
  border-radius: 6px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}
.info-row { margin-bottom: 4px; }
.info-row:last-child { margin-bottom: 0; }
.info-label { color: var(--grey); }

fieldset {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
  margin-bottom: 16px;
}
legend {
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0 6px;
  color: var(--blue);
}
.required-note { font-weight: 400; color: var(--grey); font-size: 0.8rem; }
.optional-note { font-weight: 400; color: var(--grey); font-size: 0.8rem; }

.form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 10px;
}
.form-row:last-child { margin-bottom: 0; }
.form-row label {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--grey);
  font-weight: 500;
}
.form-row input {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 0.9rem;
  width: 100%;
  color: var(--text);
}
.form-row input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 2px rgba(26,95,168,0.15);
}
.form-row input.invalid { border-color: var(--red); }

#p3-toggle-row { margin-bottom: 16px; }

.form-error {
  background: var(--red-bg);
  color: var(--red);
  border: 1px solid #ef9a9a;
  border-radius: 5px;
  padding: 10px 14px;
  font-size: 0.875rem;
  margin-bottom: 14px;
}
.form-error.hidden { display: none; }

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

.btn-primary {
  background: var(--blue);
  color: white;
  border: none;
  border-radius: 5px;
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--blue-dark); }
.btn-primary:disabled { opacity: 0.6; cursor: default; }

.btn-secondary {
  background: white;
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 5px;
  padding: 9px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-secondary:hover { background: var(--blue-light); }

.btn-link {
  background: none;
  border: none;
  color: var(--red);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 4px 0;
  text-decoration: underline;
}

.hidden { display: none !important; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green);
  color: white;
  padding: 14px 24px;
  border-radius: 8px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  z-index: 200;
  font-size: 0.95rem;
}
.toast.hidden { display: none; }

.roster-footer-note {
  margin: 32px auto 16px;
  max-width: 700px;
  text-align: center;
  font-size: 0.875rem;
  color: var(--grey);
  padding: 14px 20px;
  background: #f8f9fa;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.roster-footer-note a {
  color: var(--blue);
  font-weight: 600;
  text-decoration: none;
}
.roster-footer-note a:hover { text-decoration: underline; }

@media (max-width: 540px) {
  .form-row { flex-direction: column; gap: 8px; }
  .dates-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
  .modal { padding: 20px 16px; }
}