/* ============================================================
   Sistema de Prematrícula - Liceo José Joaquín Vargas Calvo
   Hoja de estilos principal (formulario público)
   ============================================================ */

/* ── Variables de color institucional ───────────────────────── */
:root {
  --azul-oscuro:  #1e3a5f;
  --azul-medio:   #2563a8;
  --azul-claro:   #3b82c4;
  --azul-suave:   #dbeafe;
  --blanco:       #ffffff;
  --gris-claro:   #f5f7fa;
  --gris-borde:   #d1d5db;
  --gris-medio:   #6b7280;
  --gris-oscuro:  #374151;
  --rojo-error:   #dc2626;
  --verde-exito:  #16a34a;
  --sombra:       0 2px 12px rgba(30,58,95,.12);
  --radio:        8px;
  --transicion:   .22s ease;
}

/* ── Reset y base ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--gris-claro);
  color: var(--gris-oscuro);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Encabezado ──────────────────────────────────────────────── */
.site-header {
  background: linear-gradient(135deg, var(--azul-oscuro) 0%, var(--azul-medio) 100%);
  color: var(--blanco);
  padding: 0;
  box-shadow: var(--sombra);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 20px 18px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.header-logo {
  width: 68px;
  height: 68px;
  background: var(--blanco);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.header-logo img { width: 100%; height: 100%; object-fit: contain; }
.header-logo-placeholder {
  font-size: 28px;
  font-weight: 900;
  color: var(--azul-oscuro);
  letter-spacing: -1px;
}

.header-text h1 {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2px;
}
.header-text p {
  font-size: .85rem;
  opacity: .85;
}

/* ── Contenedor principal ────────────────────────────────────── */
.container {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px 60px;
}

/* ── Tarjeta de sección ──────────────────────────────────────── */
.card {
  background: var(--blanco);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  margin-bottom: 24px;
  overflow: hidden;
}

.card-header {
  background: var(--azul-oscuro);
  color: var(--blanco);
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 600;
}
.card-header .icon {
  font-size: 1.1rem;
  opacity: .85;
}

.card-body {
  padding: 24px 22px;
}

/* ── Grupos de campos ────────────────────────────────────────── */
.form-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 560px) {
  .form-grid-2 { grid-template-columns: 1fr 1fr; }
  .form-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
}

.form-group { display: flex; flex-direction: column; gap: 5px; }

.form-group label {
  font-size: .875rem;
  font-weight: 600;
  color: var(--gris-oscuro);
}
.form-group label .req {
  color: var(--rojo-error);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--gris-borde);
  border-radius: 6px;
  font-size: .95rem;
  color: var(--gris-oscuro);
  background: var(--blanco);
  transition: border-color var(--transicion), box-shadow var(--transicion);
  outline: none;
  appearance: none;
}
.form-control:focus {
  border-color: var(--azul-claro);
  box-shadow: 0 0 0 3px rgba(59,130,196,.15);
}
.form-control:disabled {
  background: var(--gris-claro);
  color: var(--gris-medio);
  cursor: not-allowed;
}
.form-control.error {
  border-color: var(--rojo-error);
}

textarea.form-control {
  resize: vertical;
  min-height: 90px;
}

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.field-error {
  font-size: .8rem;
  color: var(--rojo-error);
  min-height: 18px;
}

/* ── Radio buttons y opciones de tipo ingreso ────────────────── */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.radio-card {
  flex: 1;
  min-width: 200px;
  border: 2px solid var(--gris-borde);
  border-radius: var(--radio);
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color var(--transicion), background var(--transicion);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  position: relative;
}
.radio-card:hover { border-color: var(--azul-claro); background: var(--azul-suave); }
.radio-card input[type="radio"] {
  accent-color: var(--azul-oscuro);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}
.radio-card.selected {
  border-color: var(--azul-oscuro);
  background: var(--azul-suave);
}
.radio-card .radio-label { font-size: .9rem; font-weight: 500; line-height: 1.3; }

/* ── Checkboxes de áreas ─────────────────────────────────────── */
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1.5px solid var(--gris-borde);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color var(--transicion), background var(--transicion);
}
.checkbox-item:hover { border-color: var(--azul-claro); background: var(--azul-suave); }
.checkbox-item input[type="checkbox"] {
  accent-color: var(--azul-oscuro);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.checkbox-item.checked { border-color: var(--azul-oscuro); background: var(--azul-suave); }
.checkbox-item span { font-size: .875rem; }

/* ── Sección colapsable (segundo encargado) ──────────────────── */
.collapsible-toggle {
  background: none;
  border: 1.5px dashed var(--gris-borde);
  border-radius: 6px;
  width: 100%;
  padding: 12px 16px;
  font-size: .9rem;
  color: var(--azul-medio);
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transicion), border-color var(--transicion);
}
.collapsible-toggle:hover { background: var(--azul-suave); border-color: var(--azul-claro); }
.collapsible-toggle .arrow { transition: transform var(--transicion); }
.collapsible-toggle.open .arrow { transform: rotate(180deg); }

.collapsible-content { display: none; padding-top: 18px; }
.collapsible-content.open { display: block; }

/* ── Sección dinámica (centro anterior) ──────────────────────── */
.seccion-dinamica { display: none; }
.seccion-dinamica.visible { display: block; animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

/* ── Consentimiento ──────────────────────────────────────────── */
.consent-box {
  border: 1.5px solid var(--gris-borde);
  border-radius: var(--radio);
  padding: 18px;
  background: var(--gris-claro);
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.consent-box input[type="checkbox"] {
  accent-color: var(--azul-oscuro);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}
.consent-box p { font-size: .875rem; line-height: 1.5; color: var(--gris-oscuro); }

/* ── Botones ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--transicion), transform .1s;
  text-decoration: none;
}
.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--azul-oscuro);
  color: var(--blanco);
}
.btn-primary:hover { background: var(--azul-medio); }

.btn-secondary {
  background: var(--gris-claro);
  color: var(--gris-oscuro);
  border: 1.5px solid var(--gris-borde);
}
.btn-secondary:hover { background: var(--gris-borde); }

.btn-success {
  background: var(--verde-exito);
  color: var(--blanco);
}
.btn-success:hover { background: #15803d; }

.btn-lg { padding: 14px 36px; font-size: 1.05rem; }
.btn-block { width: 100%; }

.form-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
  padding-top: 8px;
}

/* ── Modal de confirmación ───────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 1000;
  align-items: flex-start;
  justify-content: center;
  padding: 20px;
  overflow-y: auto;
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--blanco);
  border-radius: var(--radio);
  max-width: 720px;
  width: 100%;
  margin: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  animation: slideUp .3s ease;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.modal-header {
  background: var(--azul-oscuro);
  color: var(--blanco);
  padding: 18px 24px;
  border-radius: var(--radio) var(--radio) 0 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-body { padding: 24px; }

.resumen-seccion { margin-bottom: 20px; }
.resumen-seccion h4 {
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--azul-medio);
  border-bottom: 1.5px solid var(--azul-suave);
  padding-bottom: 6px;
  margin-bottom: 12px;
}
.resumen-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
}
@media (max-width: 500px) { .resumen-grid { grid-template-columns: 1fr; } }

.resumen-item { font-size: .88rem; }
.resumen-item .ri-label { color: var(--gris-medio); font-size: .8rem; display: block; }
.resumen-item .ri-value { font-weight: 500; }

.modal-footer {
  padding: 18px 24px;
  border-top: 1px solid var(--gris-borde);
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* ── Página de éxito ─────────────────────────────────────────── */
.exito-card {
  background: var(--blanco);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 48px 32px;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.exito-icon { font-size: 4rem; margin-bottom: 16px; }
.exito-card h2 {
  color: var(--verde-exito);
  font-size: 1.6rem;
  margin-bottom: 8px;
}
.exito-card p { color: var(--gris-medio); margin-bottom: 20px; }
.numero-pm {
  background: var(--azul-suave);
  border: 2px solid var(--azul-claro);
  border-radius: var(--radio);
  padding: 14px 24px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--azul-oscuro);
  letter-spacing: .05em;
  display: inline-block;
  margin-bottom: 24px;
}
.exito-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 10px; }

/* ── Barra de progreso / pasos ───────────────────────────────── */
.steps-bar {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 28px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 80px;
  flex: 1;
}
.step-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gris-borde);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  color: var(--gris-medio);
  position: relative;
  z-index: 1;
}
.step-label { font-size: .72rem; color: var(--gris-medio); text-align: center; }
.step-line {
  flex: 1;
  height: 2px;
  background: var(--gris-borde);
  margin-top: -24px;
}
.step.done .step-circle { background: var(--azul-oscuro); color: var(--blanco); }
.step.done .step-label  { color: var(--azul-oscuro); font-weight: 600; }
.step.done + .step-line { background: var(--azul-oscuro); }

/* ── Alertas ─────────────────────────────────────────────────── */
.alert {
  padding: 14px 18px;
  border-radius: var(--radio);
  margin-bottom: 20px;
  font-size: .9rem;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.alert-error   { background: #fee2e2; border-left: 4px solid var(--rojo-error); color: #7f1d1d; }
.alert-success { background: #dcfce7; border-left: 4px solid var(--verde-exito); color: #14532d; }
.alert-info    { background: var(--azul-suave); border-left: 4px solid var(--azul-claro); color: var(--azul-oscuro); }

/* ── Pie de página ───────────────────────────────────────────── */
.site-footer {
  background: var(--azul-oscuro);
  color: rgba(255,255,255,.7);
  text-align: center;
  padding: 18px;
  font-size: .8rem;
  margin-top: auto;
}

/* ── Impresión ───────────────────────────────────────────────── */
@media print {
  .site-header, .site-footer, .form-actions, .btn, .modal-overlay,
  .steps-bar, .collapsible-toggle { display: none !important; }
  body { background: white; }
  .card { box-shadow: none; border: 1px solid #ddd; }
}

/* ── Responsivo ──────────────────────────────────────────────── */
@media (max-width: 560px) {
  .header-inner { gap: 12px; }
  .header-logo  { width: 52px; height: 52px; }
  .header-text h1 { font-size: 1.05rem; }
  .card-body    { padding: 18px 14px; }
  .radio-group  { flex-direction: column; }
  .radio-card   { min-width: unset; }
  .form-actions { justify-content: stretch; }
  .form-actions .btn { flex: 1; }
}