/* ==========================================================================
   Indasa — hoja de estilos principal
   Paleta y tipografía tomadas del sitio actual para conservar la identidad.
   ========================================================================== */

:root {
  /* Marca */
  --verde-oscuro: #083820;
  --verde-medio:  #0f5c34;
  --verde-brillo: #24de79;
  --teal:         #45a28a;

  /* Neutros */
  --negro:   #16201b;
  --gris-90: #33403a;
  --gris-60: #6b7a72;
  --gris-30: #c9d2cd;
  --gris-10: #eef2f0;
  --blanco:  #ffffff;

  /* Semánticos */
  --fondo:        var(--blanco);
  --fondo-alt:    var(--gris-10);
  --texto:        var(--gris-90);
  --texto-suave:  var(--gris-60);
  --titulo:       var(--verde-oscuro);

  /* Medidas */
  --ancho-max: 1200px;
  --radio:     10px;
  --radio-sm:  6px;
  --header-h:  76px;

  --sombra:    0 2px 10px rgba(8, 56, 32, .07);
  --sombra-md: 0 8px 28px rgba(8, 56, 32, .12);

  --trans: .22s ease;

  --fuente: 'Kumbh Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
}

/* --------------------------------------------------------------- Base */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--fuente);
  font-size: 17px;
  line-height: 1.65;
  color: var(--texto);
  background: var(--fondo);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--verde-medio); text-decoration: none; transition: color var(--trans); }
a:hover { color: var(--verde-brillo); }

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.22;
  color: var(--titulo);
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.4rem); }

p { margin: 0 0 1.1em; }

.container {
  width: 100%;
  max-width: var(--ancho-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--verde-oscuro);
  color: var(--blanco);
  padding: 12px 20px;
  z-index: 200;
}
.skip-link:focus { left: 0; color: var(--blanco); }

:focus-visible {
  outline: 3px solid var(--verde-brillo);
  outline-offset: 2px;
}

/* --------------------------------------------------------------- Botones */

.btn {
  display: inline-block;
  padding: 13px 28px;
  border: 2px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  font-size: .95rem;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
  transition: background var(--trans), color var(--trans), border-color var(--trans), transform var(--trans);
}
.btn:hover { transform: translateY(-2px); }

.btn--accent  { background: var(--verde-brillo); color: var(--verde-oscuro); }
.btn--accent:hover { background: #1cc76b; color: var(--verde-oscuro); }

.btn--outline { background: transparent; border-color: currentColor; color: var(--verde-oscuro); }
.btn--outline:hover { background: var(--verde-oscuro); color: var(--blanco); }

.btn--ghost-light { background: transparent; border-color: var(--blanco); color: var(--blanco); }
.btn--ghost-light:hover { background: var(--blanco); color: var(--verde-oscuro); }

.btn--lg { padding: 16px 36px; font-size: 1.05rem; }

/* --------------------------------------------------------------- Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--verde-oscuro);
  box-shadow: var(--sombra);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: var(--header-h);
}

.logo img { width: auto; height: 44px; object-fit: contain; }

/* Botón hamburguesa (solo móvil) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
}
.nav-toggle__bar {
  display: block;
  width: 26px;
  height: 2px;
  margin-inline: auto;
  background: var(--blanco);
  transition: transform var(--trans), opacity var(--trans);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Navegación */
.nav { display: flex; align-items: center; gap: 24px; }

.nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__item { position: relative; }

.nav__link {
  display: block;
  padding: 10px 14px;
  color: var(--blanco);
  font-size: .95rem;
  font-weight: 600;
  border-radius: var(--radio-sm);
  white-space: nowrap;
}
.nav__link:hover,
.nav__link.is-active { color: var(--verde-brillo); }

/* Submenú */
.nav__sub-toggle { display: none; }

.nav__sub {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  margin: 0;
  padding: 8px;
  list-style: none;
  background: var(--blanco);
  border-radius: var(--radio);
  box-shadow: var(--sombra-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--trans), transform var(--trans), visibility var(--trans);
}
.nav__item--has-sub:hover > .nav__sub,
.nav__item--has-sub:focus-within > .nav__sub {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__sub-link {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radio-sm);
  color: var(--gris-90);
  font-size: .92rem;
}
.nav__sub-link:hover,
.nav__sub-link.is-active { background: var(--gris-10); color: var(--verde-oscuro); }

/* --------------------------------------------------------------- Hero */

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 460px;
  padding-block: 90px;
  color: var(--blanco);
  background-color: var(--verde-oscuro);
  background-image: linear-gradient(rgba(8, 56, 32, .74), rgba(8, 56, 32, .74)), var(--hero-img);
  background-size: cover;
  background-position: center;
}
.hero--plain { min-height: 0; padding-block: 64px; background-image: none; }

.hero__titulo    { color: var(--blanco); max-width: 20ch; }
.hero__subtitulo {
  max-width: 60ch;
  margin-bottom: 1.8em;
  font-size: 1.12rem;
  color: rgba(255, 255, 255, .92);
}

/* --------------------------------------------------------------- Secciones */

.seccion { padding-block: clamp(56px, 8vw, 96px); }
.seccion--alt { background: var(--fondo-alt); }

.seccion__intro { max-width: 62ch; margin-bottom: 48px; }
.seccion__intro--centro { margin-inline: auto; text-align: center; }

.eyebrow {
  display: block;
  margin-bottom: 10px;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--teal);
}

/* --------------------------------------------------------------- Grillas */

.grid { display: grid; gap: 28px; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

/* --------------------------------------------------------------- Tarjetas */

.card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--blanco);
  border: 1px solid var(--gris-30);
  border-radius: var(--radio);
  transition: transform var(--trans), box-shadow var(--trans);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--sombra-md); }

.card__img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.card__body { flex: 1; display: flex; flex-direction: column; padding: 24px; }
.card__titulo { margin-bottom: .4em; font-size: 1.15rem; }
.card__texto { flex: 1; color: var(--texto-suave); font-size: .96rem; }
.card__link { margin-top: 16px; font-weight: 700; font-size: .93rem; }
.card__link::after { content: " →"; }

/* --------------------------------------------------------------- CTA */

.cta {
  padding-block: clamp(56px, 7vw, 84px);
  background: var(--verde-oscuro);
  color: var(--blanco);
  text-align: center;
}
.cta h2 { color: var(--blanco); }
.cta p { max-width: 56ch; margin-inline: auto; margin-bottom: 1.8em; color: rgba(255, 255, 255, .9); }

/* --------------------------------------------------------------- Formularios */

.form { display: grid; gap: 18px; max-width: 640px; }
.form__fila { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.campo { display: flex; flex-direction: column; gap: 6px; }
.campo__label { font-size: .9rem; font-weight: 600; color: var(--gris-90); }

.campo__input,
.campo__select,
.campo__textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: .97rem;
  color: var(--texto);
  background: var(--blanco);
  border: 1px solid var(--gris-30);
  border-radius: var(--radio-sm);
  transition: border-color var(--trans), box-shadow var(--trans);
}
.campo__input:focus,
.campo__select:focus,
.campo__textarea:focus {
  outline: 0;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(69, 162, 138, .18);
}
.campo__textarea { min-height: 130px; resize: vertical; }

.campo__error { font-size: .85rem; color: #c0392b; }

.alerta { padding: 14px 18px; border-radius: var(--radio-sm); font-size: .95rem; }
.alerta--ok    { background: #eafaf958; border: 1px solid var(--teal); color: var(--verde-oscuro); }
.alerta--error { background: #fdf1f1; border: 1px solid #eab8b8; color: #7a2323; }

/* --------------------------------------------------------------- Footer */

.site-footer { background: var(--verde-oscuro); color: rgba(255, 255, 255, .82); }

.site-footer__grid {
  display: grid;
  gap: 40px;
  padding-block: 64px;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
}

.site-footer__logo   { height: 42px; width: auto; margin-bottom: 18px; }
.site-footer__tagline{ font-size: .95rem; max-width: 34ch; }

.site-footer__titulo {
  margin-bottom: 16px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blanco);
}

.site-footer__lista { margin: 0; padding: 0; list-style: none; }
.site-footer__lista li { margin-bottom: 10px; }
.site-footer__lista a,
.site-footer__contacto a { color: rgba(255, 255, 255, .82); font-size: .95rem; }
.site-footer__lista a:hover,
.site-footer__contacto a:hover { color: var(--verde-brillo); }

.site-footer__contacto { font-style: normal; font-size: .95rem; }
.site-footer__contacto p { margin-bottom: .7em; }

.social { display: flex; gap: 12px; margin: 20px 0 0; padding: 0; list-style: none; }
.social a {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .1);
  transition: background var(--trans);
}
.social a:hover { background: var(--verde-brillo); }
.social svg { width: 18px; height: 18px; fill: var(--blanco); }
.social a:hover svg { fill: var(--verde-oscuro); }

.site-footer__legal {
  padding-block: 20px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: .87rem;
}
.site-footer__legal p { margin: 0; }

/* --------------------------------------------------------------- Utilidades */

.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------- Responsive */

@media (max-width: 1024px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }

  .nav-toggle { display: flex; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 0 auto;
    width: min(340px, 86vw);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 24px;
    overflow-y: auto;
    background: var(--verde-oscuro);
    border-left: 1px solid rgba(255, 255, 255, .1);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .28s ease, visibility .28s ease;
  }
  .nav.is-open { transform: translateX(0); visibility: visible; }

  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }

  .nav__item { border-bottom: 1px solid rgba(255, 255, 255, .08); }

  .nav__link { padding: 14px 4px; font-size: 1rem; }

  /* Submenú acordeón en móvil */
  .nav__item--has-sub { display: grid; grid-template-columns: 1fr auto; }
  .nav__item--has-sub > .nav__link { grid-column: 1; }

  .nav__sub-toggle {
    display: block;
    grid-column: 2;
    align-self: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 0;
    cursor: pointer;
    position: relative;
  }
  .nav__sub-toggle::before,
  .nav__sub-toggle::after {
    content: "";
    position: absolute;
    top: 50%; left: 50%;
    width: 12px; height: 2px;
    background: var(--blanco);
    transform: translate(-50%, -50%);
    transition: transform var(--trans);
  }
  .nav__sub-toggle::after { transform: translate(-50%, -50%) rotate(90deg); }
  .nav__sub-toggle[aria-expanded="true"]::after { transform: translate(-50%, -50%) rotate(0); }

  .nav__sub {
    position: static;
    grid-column: 1 / -1;
    min-width: 0;
    padding: 0 0 8px 12px;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }
  .nav__sub.is-open { display: block; }
  .nav__sub-link { color: rgba(255, 255, 255, .8); }
  .nav__sub-link:hover,
  .nav__sub-link.is-active { background: rgba(255, 255, 255, .08); color: var(--verde-brillo); }

  .nav__cta { margin-top: 20px; }

  body.nav-abierto { overflow: hidden; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .container { padding-inline: 18px; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 32px; padding-block: 48px; }
  .hero { min-height: 380px; padding-block: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* --------------------------------------------------------------- Beneficios */

.beneficio {
  padding: 28px 24px;
  text-align: center;
  background: var(--blanco);
  border-radius: var(--radio);
  border: 1px solid var(--gris-30);
}
.beneficio__cifra {
  margin-bottom: .2em;
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--verde-oscuro);
}
.beneficio__texto {
  margin: 0;
  font-size: .93rem;
  color: var(--texto-suave);
}

/* --------------------------------------------------------------- Calculadora */

.calc {
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(280px, 420px) 1fr;
  align-items: start;
}

.calc__panel {
  padding: 28px;
  background: var(--blanco);
  border: 1px solid var(--gris-30);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
}

.calc__resultado {
  padding: 28px;
  background: var(--verde-oscuro);
  color: var(--blanco);
  border-radius: var(--radio);
}
.calc__resultado h3 { color: var(--blanco); }

.calc__vacio { color: rgba(255,255,255,.75); font-size: .95rem; }

.calc__dato {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,.15);
}
.calc__dato:last-of-type { border-bottom: 0; }
.calc__dato dt { font-size: .93rem; color: rgba(255,255,255,.82); }
.calc__dato dd {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--verde-brillo);
  white-space: nowrap;
}

.calc__nota {
  margin-top: 18px;
  font-size: .82rem;
  line-height: 1.5;
  color: rgba(255,255,255,.7);
}

.calc__rango { width: 100%; accent-color: var(--verde-brillo); }

@media (max-width: 860px) {
  .calc { grid-template-columns: 1fr; }
}