/* =============================================================================
 * ¡A Crear! — Estilos del frontend del docente (Fase 2)
 * Mobile-first. Paleta basada en acrear.app.
 * ============================================================================= */

:root {
  --color-primary: #6F2C91;
  --color-primary-hover: #5A2376;
  --color-primary-soft: #F3E8F8;
  --color-accent: #F2A93B;
  --color-bg: #FFFFFF;
  --color-surface: #FAFAFA;
  --color-text: #1A1A1A;
  --color-text-muted: #6B6B6B;
  --color-success: #2E7D32;
  --color-success-soft: #E8F5E9;
  --color-warning: #ED6C02;
  --color-danger: #C62828;
  --color-danger-soft: #FFEBEE;
  --color-border: #E5E5E5;
  --color-input-bg: #FFFFFF;
  --color-stripe: #FBF8FC;

  --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(111, 44, 145, 0.10);
  --shadow-lg: 0 8px 24px rgba(111, 44, 145, 0.15);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-surface);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#root { min-height: 100vh; min-height: 100dvh; }

/* ---------- Layout ---------- */
.app-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
}

.app-header {
  background: var(--color-primary);
  color: #fff;
  padding: 1.25rem 1.25rem 1rem;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow-md);
}
.app-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.app-header .subtitle {
  margin: 0;
  font-size: 0.875rem;
  opacity: 0.92;
}
.app-header .back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: none;
  border: none;
  color: #fff;
  font: inherit;
  font-size: 0.875rem;
  padding: 0.25rem 0;
  margin-bottom: 0.5rem;
  cursor: pointer;
  opacity: 0.92;
}
.app-header .back-btn:hover { opacity: 1; }

.app-main {
  flex: 1;
  padding: 1.25rem;
}

.app-footer {
  padding: 1.25rem 1.25rem 1.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.5;
  border-top: 1px solid var(--color-border);
  margin-top: 1rem;
}
.app-footer strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.card + .card { margin-top: 1rem; }
.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  font-weight: 600;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  border: none;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.12s, transform 0.05s, box-shadow 0.12s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.btn:active:not(:disabled) { transform: scale(0.98); }
.btn:disabled { cursor: not-allowed; opacity: 0.5; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover:not(:disabled) { background: var(--color-primary-hover); }

.btn-secondary {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}
.btn-secondary:hover:not(:disabled) { background: #E9D6F1; }

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
}
.btn-ghost:hover:not(:disabled) { background: var(--color-primary-soft); }

.btn-danger-ghost {
  background: transparent;
  color: var(--color-danger);
  font-weight: 500;
}

.btn-block { width: 100%; }
.btn-sm { min-height: 36px; padding: 0.5rem 0.875rem; font-size: 0.875rem; }

.btn-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.btn-row .btn { flex: 1; min-width: 0; }

/* ---------- Inputs ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: 1rem;
}
.field label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}
.field .hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.field .error-text {
  font-size: 0.8125rem;
  color: var(--color-danger);
}
.input,
.select {
  width: 100%;
  min-height: 48px;
  padding: 0.625rem 0.875rem;
  background: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font: inherit;
  font-size: 1rem;
  color: var(--color-text);
  transition: border-color 0.12s, box-shadow 0.12s;
}
.input:focus,
.select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(111, 44, 145, 0.18);
}
.input.readonly,
.input:disabled {
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: not-allowed;
}
.input.invalid {
  border-color: var(--color-danger);
}

.input-pin {
  letter-spacing: 0.5em;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 600;
  padding-left: 0.5em;
}

/* ---------- Filtros (Mis registros) ---------- */
.filtros {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
@media (min-width: 600px) {
  .filtros {
    grid-template-columns: 1fr 1fr;
  }
  .filtros .full {
    grid-column: 1 / -1;
  }
}

.filtros-acciones {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.filtros-acciones .btn { flex: 0 0 auto; }

/* ---------- Tabla / Cards ---------- */
.tabla-wrap {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg);
}
.tabla {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.tabla th, .tabla td {
  padding: 0.625rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.tabla thead th {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
.tabla thead th .sort-icon {
  display: inline-block;
  margin-left: 0.25rem;
  font-size: 0.75rem;
  opacity: 0.6;
}
.tabla thead th.activo .sort-icon { opacity: 1; }
.tabla tbody tr:nth-child(even) { background: var(--color-stripe); }
.tabla tbody tr:hover { background: var(--color-primary-soft); }
.tabla tbody tr:last-child td { border-bottom: none; }

.tabla-vacia {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--color-text-muted);
}

/* En móvil: convertir tabla en cards apiladas */
.tabla-cards { display: none; }
@media (max-width: 599px) {
  .tabla-wrap { display: none; }
  .tabla-cards { display: block; }
}

.sesion-card {
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  margin-bottom: 0.625rem;
}
.sesion-card .fila {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}
.sesion-card .fecha {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
}
.sesion-card .semana {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.sesion-card .seccion {
  font-size: 0.95rem;
  margin: 0.25rem 0;
}
.sesion-card .escuela {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ---------- Notices ---------- */
.notice {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.notice-info { background: var(--color-primary-soft); color: var(--color-primary); }
.notice-success { background: var(--color-success-soft); color: var(--color-success); }
.notice-error { background: var(--color-danger-soft); color: var(--color-danger); }

/* ---------- Toast ---------- */
.toast-container {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: calc(100% - 2rem);
  max-width: 420px;
}
.toast {
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  animation: toast-in 0.18s ease-out;
}
.toast.success { background: var(--color-success); }
.toast.error { background: var(--color-danger); }
.toast.info { background: var(--color-primary); }

@keyframes toast-in {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* ---------- Loading / Spinner ---------- */
.spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-bottom-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Big options menu ---------- */
.option-grid {
  display: grid;
  gap: 0.875rem;
}
.option-card {
  display: flex;
  flex-direction: column;
  text-align: left;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 1.125rem;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.12s, transform 0.05s, box-shadow 0.12s;
}
.option-card:hover { background: var(--color-primary-soft); }
.option-card:active { transform: scale(0.99); }
.option-card .title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}
.option-card .desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ---------- Login screen ---------- */
.auth-shell {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem 1.5rem;
  background: linear-gradient(160deg, var(--color-primary) 0%, #4A1D62 100%);
  color: #fff;
  min-height: 100vh;
  min-height: 100dvh;
}
.auth-shell .brand {
  text-align: center;
  margin-bottom: 2rem;
}
.auth-shell .brand .logo {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}
.auth-shell .brand .tagline {
  font-size: 0.95rem;
  opacity: 0.85;
}
.auth-card {
  background: #fff;
  color: var(--color-text);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  width: 100%;
  margin: 0 auto;
}
.auth-card h2 {
  margin: 0 0 1rem;
  font-size: 1.15rem;
  font-weight: 600;
}

/* ---------- Headline ---------- */
.greeting {
  font-size: 0.875rem;
  opacity: 0.92;
}
.greeting strong { font-weight: 600; }

/* ---------- Quick date buttons ---------- */
.quick-dates {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.quick-dates .btn {
  min-height: 36px;
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
}

/* ---------- Mis datos ---------- */
.datos-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem 1rem;
}
.datos-grid .key {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.5rem;
}
.datos-grid .val {
  font-size: 1rem;
  color: var(--color-text);
}

.escuela-bloque {
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 1rem 1.125rem;
  margin-bottom: 0.875rem;
}
.escuela-bloque h3 {
  margin: 0 0 0.25rem;
  color: var(--color-primary);
  font-size: 1rem;
}
.escuela-bloque .sub {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.625rem;
}

.seccion-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-top: 1px dashed var(--color-border);
  font-size: 0.9rem;
}
.seccion-row:first-of-type { border-top: none; padding-top: 0.25rem; }
.seccion-row .nom { font-weight: 600; color: var(--color-text); }
.seccion-row .meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.125rem;
}
.seccion-row .meta .pill {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  font-weight: 600;
}
.seccion-row .meta .pill-vacio {
  background: var(--color-surface);
  color: var(--color-text-muted);
}

/* ---------- Paginación ---------- */
.paginacion {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-top: 0.875rem;
  padding-top: 0.625rem;
}
.paginacion-info {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: center;
}
.paginacion-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.paginacion-actual {
  font-size: 0.8125rem;
  color: var(--color-text);
  font-weight: 600;
}
@media (min-width: 600px) {
  .paginacion {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .paginacion-info { text-align: left; }
}

/* ---------- Tablet adjustments ---------- */
@media (min-width: 600px) {
  .app-shell { box-shadow: var(--shadow-md); }
}