/* =========================================================
   Variables de diseño (Design tokens)
   Modo claro · minimalista · inspirado en Apple/Stripe/Notion
   ========================================================= */
:root {
  /* Colores */
  --color-bg: #ffffff;            /* Fondo blanco (tarjeta) */
  --color-page-bg: #5a6350;       /* Fondo de la página (verde oliva) */
  --color-surface: #f7f8fa;       /* Gris muy claro para tarjetas/inputs */
  --color-surface-hover: #f1f3f6;
  --color-border: #e5e7eb;        /* Bordes sutiles */
  --color-border-strong: #d1d5db;
  --color-text: #111827;          /* Texto principal */
  --color-text-soft: #6b7280;     /* Texto secundario */
  --color-text-muted: #9ca3af;    /* Texto tenue / notas */

  --color-primary: #2563eb;       /* Azul principal */
  --color-primary-soft: rgba(37, 99, 235, 0.12);
  --color-primary-ring: rgba(37, 99, 235, 0.20);

  --color-whatsapp: #25d366;      /* Verde solo para WhatsApp */
  --color-whatsapp-dark: #1ebe5b;
  --color-whatsapp-ring: rgba(37, 211, 102, 0.30);

  --color-error: #dc2626;         /* Rojo para errores */
  --color-error-ring: rgba(220, 38, 38, 0.18);

  /* Radios */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 22px;

  /* Sombras suaves */
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 4px 16px rgba(16, 24, 40, 0.06);
  --shadow-lg: 0 24px 60px -20px rgba(16, 24, 40, 0.18),
               0 8px 24px -12px rgba(16, 24, 40, 0.10);

  /* Espaciado / tipografía */
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================================
   Reset básico
   ========================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background-color: var(--color-page-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* =========================================================
   Layout de la página (Mobile First)
   ========================================================= */
.page {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 18px calc(24px + env(safe-area-inset-bottom));
}

/* =========================================================
   Tarjeta
   ========================================================= */
.card {
  width: 100%;
  max-width: 440px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px 24px;
  /* Animación de entrada */
  animation: card-in 520ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* --------- Encabezado --------- */
.card__header {
  text-align: center;
  margin-bottom: 28px;
}

.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.logo__img {
  height: 34px;
  width: auto;
}

.card__title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 8px;
}

.card__subtitle {
  font-size: 15px;
  color: var(--color-text-soft);
  max-width: 32ch;
  margin: 0 auto;
}

/* =========================================================
   Formulario
   ========================================================= */
.form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
}

.field__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 7px;
}

.field__optional {
  font-weight: 400;
  color: var(--color-text-muted);
}
.field__telefono{
  font-weight: 400;
  color: var(--color-text-muted);
}

.field__input {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 13px 14px;
  transition: border-color var(--transition), background-color var(--transition),
    box-shadow var(--transition);
  outline: none;
}

.field__input::placeholder {
  color: var(--color-text-muted);
}

.field__input:hover {
  background-color: var(--color-surface-hover);
}

.field__input:focus {
  background-color: var(--color-bg);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-ring);
}

/* Estado de error */
.field__input.is-invalid {
  border-color: var(--color-error);
  background-color: #fff;
}

.field__input.is-invalid:focus {
  box-shadow: 0 0 0 4px var(--color-error-ring);
}

/* Mensaje de error */
.field__error {
  font-size: 12.5px;
  color: var(--color-error);
  margin-top: 6px;
  min-height: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-2px);
  transition: opacity var(--transition), transform var(--transition),
    max-height var(--transition);
}

.field__error.is-visible {
  max-height: 40px;
  opacity: 1;
  transform: none;
}

/* --------- Select --------- */
.field__select-wrap {
  position: relative;
}

.field__select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
  padding-right: 42px; /* espacio para el icono */
}

/* Cuando no se ha elegido opción, mostrar como placeholder */
.field__select:invalid {
  color: var(--color-text-muted);
}

.field__select-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-soft);
  pointer-events: none;
  transition: transform var(--transition);
}

.field__select:focus + .field__select-icon {
  color: var(--color-primary);
}

/* =========================================================
   Botón principal (WhatsApp)
   ========================================================= */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  cursor: pointer;
  margin-top: 6px;
  transition: transform var(--transition), box-shadow var(--transition),
    background-color var(--transition);
  outline: none;
}

.btn--whatsapp {
  background-color: var(--color-whatsapp);
  box-shadow: 0 8px 20px -8px var(--color-whatsapp-ring);
}

.btn--whatsapp:hover {
  background-color: var(--color-whatsapp-dark);
  transform: translateY(-1px);
  box-shadow: 0 12px 26px -10px var(--color-whatsapp-ring);
}

.btn--whatsapp:active {
  transform: translateY(0);
}

.btn--whatsapp:focus-visible {
  box-shadow: 0 0 0 4px var(--color-whatsapp-ring);
}

.btn__icon {
  flex-shrink: 0;
}

/* Estado de carga */
.btn.is-loading {
  pointer-events: none;
  opacity: 0.9;
}

.btn.is-loading .btn__icon,
.btn.is-loading .btn__label {
  visibility: hidden;
}

.btn__spinner {
  display: none;
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

.btn.is-loading .btn__spinner {
  display: block;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* --------- Nota de privacidad --------- */
.form__note {
  font-size: 12.5px;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.5;
  margin-top: 4px;
  padding: 0 4px;
}

/* =========================================================
   Responsive: ajustes para pantallas más grandes
   ========================================================= */
@media (min-width: 480px) {
  .card {
    padding: 40px 36px;
  }

  .card__title {
    font-size: 26px;
  }
}

/* =========================================================
   Accesibilidad: respetar preferencia de menos movimiento
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}