/* ============================================================
   calculaconstruccion.com — main.css
   Estética: industrial cálida, mobile-first, sin frameworks
   ============================================================ */

/* ── Reset básico ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Barlow', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  background: #F7F5F0;
  color: #1C2428;
}
img { max-width: 100%; display: block; }
a { color: #D4621A; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Variables ───────────────────────────────────────────────── */
:root {
  --naranja:      #D4621A;
  --naranja-claro:#FAE8DA;
  --pizarra:      #1C2428;
  --pizarra-med:  #2E3C44;
  --gris-fondo:   #F7F5F0;
  --gris-borde:   #DDD8CE;
  --gris-texto:   #5A6570;
  --blanco:       #FFFFFF;
  --verde:        #2A7A4B;
  --radio:        6px;
  --radio-lg:     10px;
  --sombra:       0 2px 8px rgba(28,36,40,0.08);
  --transicion:   0.18s ease;
}

/* ── Container ───────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* ── Header ──────────────────────────────────────────────────── */
.site-header {
  background: var(--pizarra);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,0.25);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 0;
  flex-wrap: wrap;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: #FFFFFF;
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.logo__icon {
  background: var(--naranja);
  color: white;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  font-size: 14px;
}
.logo__texto strong { color: var(--naranja); }

/* Selector de país */
.pais-selector {
  display: flex;
  gap: 0.5rem;
  margin-left: auto;
}
.pais-selector__item {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  padding: 3px 8px;
  border-radius: var(--radio);
  text-decoration: none;
  transition: var(--transicion);
}
.pais-selector__item:hover,
.pais-selector__item--activo {
  background: rgba(255,255,255,0.12);
  color: white;
  text-decoration: none;
}

/* Nav principal */
.nav-principal {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}
.nav-principal__link {
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  padding: 4px 10px;
  border-radius: var(--radio);
  text-decoration: none;
  transition: var(--transicion);
  white-space: nowrap;
}
.nav-principal__link:hover { background: rgba(255,255,255,0.1); color: white; text-decoration: none; }
.nav-principal__link--consultas { color: #F5C87A; }

/* Hamburger mobile */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: white;
  border-radius: 2px;
}

/* ── Main ────────────────────────────────────────────────────── */
.site-main { padding: 2rem 0 4rem; }

/* ── Breadcrumbs ─────────────────────────────────────────────── */
.bc { margin-bottom: 1.5rem; }
.bc__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 13px;
  color: var(--gris-texto);
}
.bc__item a { color: var(--gris-texto); }
.bc__item a:hover { color: var(--naranja); }
.bc__item--active { color: var(--pizarra); font-weight: 500; }
.bc__sep { margin: 0 2px; opacity: 0.4; }

/* ── Página home de país ─────────────────────────────────────── */
.pais-hero {
  background: var(--pizarra);
  color: white;
  border-radius: var(--radio-lg);
  padding: 2.5rem 2rem;
  margin-bottom: 2.5rem;
}
.pais-hero__titulo {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}
.pais-hero__titulo span { color: var(--naranja); }
.pais-hero__sub { font-size: 1rem; opacity: 0.8; max-width: 540px; }

/* Grid de categorías */
.categorias-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}
.categoria-card {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio-lg);
  padding: 1.25rem 1rem;
  text-decoration: none;
  color: var(--pizarra);
  transition: var(--transicion);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.categoria-card:hover {
  border-color: var(--naranja);
  box-shadow: var(--sombra);
  transform: translateY(-2px);
  text-decoration: none;
  color: var(--pizarra);
}
.categoria-card__icono { font-size: 1.75rem; }
.categoria-card__nombre {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
}
.categoria-card__count { font-size: 12px; color: var(--gris-texto); }

/* Lista de calculadoras en categoría */
.calc-lista {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.calc-card {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-left: 3px solid var(--naranja);
  border-radius: var(--radio);
  padding: 1rem 1.25rem;
  text-decoration: none;
  color: var(--pizarra);
  transition: var(--transicion);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.calc-card:hover {
  border-left-color: var(--naranja);
  box-shadow: var(--sombra);
  text-decoration: none;
  color: var(--pizarra);
  background: #FFFDF9;
}
.calc-card__flecha { color: var(--naranja); font-size: 1.1rem; margin-left: auto; }
.calc-card__nombre { font-size: 0.95rem; font-weight: 500; }

/* ── Calculadora ─────────────────────────────────────────────── */
.calc {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  max-width: 680px;
}
.calc__header { margin-bottom: 1.75rem; }
.calc__titulo {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.5rem;
}
.calc__desc { color: var(--gris-texto); font-size: 0.95rem; }

/* Campos */
.calc__campos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.campo { display: flex; flex-direction: column; gap: 0.4rem; }
.campo--full { grid-column: 1 / -1; }
.campo__label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--pizarra-med);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.campo__ayuda { font-weight: 400; color: var(--gris-texto); font-size: 12px; }
.campo__wrap { position: relative; display: flex; align-items: center; }
.campo__input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  font-family: inherit;
  font-size: 1rem;
  background: var(--gris-fondo);
  color: var(--pizarra);
  transition: var(--transicion);
}
.campo__input:focus {
  outline: none;
  border-color: var(--naranja);
  background: var(--blanco);
  box-shadow: 0 0 0 3px rgba(212,98,26,0.12);
}
.campo__unidad {
  position: absolute;
  right: 0.75rem;
  font-size: 13px;
  color: var(--gris-texto);
  pointer-events: none;
}

/* Botón calcular */
.btn-calcular {
  background: var(--naranja);
  color: white;
  border: none;
  border-radius: var(--radio);
  padding: 0.75rem 2rem;
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transicion);
  letter-spacing: 0.02em;
}
.btn-calcular:hover { background: #B85515; transform: translateY(-1px); }
.btn-calcular:active { transform: translateY(0); }

/* Botón general (contacto, volver, etc.) */
.btn-calc {
  display: inline-block;
  background: var(--naranja);
  color: white !important;
  border: none;
  border-radius: var(--radio);
  padding: 0.75rem 2rem;
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  text-decoration: none !important;
  transition: var(--transicion);
  letter-spacing: 0.02em;
  box-shadow: 0 2px 6px rgba(212, 98, 26, 0.15);
}
.btn-calc:hover {
  background: #B85515;
  transform: translateY(-1px);
  text-decoration: none !important;
  box-shadow: 0 4px 12px rgba(212, 98, 26, 0.25);
}
.btn-calc:active {
  transform: translateY(0);
}


/* ── Resultado ───────────────────────────────────────────────── */
.resultado {
  background: #F0FBF4;
  border: 1px solid #A8DDB8;
  border-radius: var(--radio-lg);
  padding: 1.75rem;
  margin-top: 1.5rem;
  animation: fadeIn 0.3s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; } }

.resultado__titulo {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--verde);
  margin-bottom: 1rem;
}
.resultado__principal {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid #A8DDB8;
}
.resultado__valor {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--pizarra);
  line-height: 1;
}
.resultado__etiqueta { font-size: 0.9rem; color: var(--gris-texto); }
.resultado__items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.resultado__item {
  background: white;
  border-radius: var(--radio);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.resultado__item-valor { font-size: 1.25rem; font-weight: 600; color: var(--pizarra); }
.resultado__item-etiqueta { font-size: 12px; color: var(--gris-texto); }
.resultado__nota {
  font-size: 0.875rem;
  color: #2A5A3A;
  background: rgba(255,255,255,0.7);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radio);
  margin-top: 0.5rem;
}
.resultado__siguiente {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--naranja);
  font-weight: 500;
}
.calc__error {
  background: #FEF0EC;
  border: 1px solid #F5B8A0;
  border-radius: var(--radio);
  padding: 0.75rem 1rem;
  color: #8B2500;
  font-size: 0.875rem;
  margin-top: 1rem;
}

/* ── Artículo / Centro de Consultas ─────────────────────────── */
.articulo {
  max-width: 680px;
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio-lg);
  padding: 2rem;
  margin-bottom: 2rem;
}
.articulo h1 {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
}
.articulo h2 {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1.75rem 0 0.5rem;
}
.articulo p { margin-bottom: 1rem; color: var(--pizarra); }
.articulo table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}
.articulo table th {
  background: var(--pizarra);
  color: white;
  padding: 8px 12px;
  text-align: left;
}
.articulo table td { padding: 7px 12px; border-bottom: 1px solid var(--gris-borde); }
.articulo table tr:nth-child(even) td { background: var(--gris-fondo); }

/* ── FAQ ─────────────────────────────────────────────────────── */
.faq {
  max-width: 680px;
  margin-bottom: 2rem;
}
.faq__titulo {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.faq__item {
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  margin-bottom: 0.5rem;
  overflow: hidden;
}
.faq__pregunta {
  padding: 0.9rem 1rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.95rem;
  list-style: none;
  background: var(--blanco);
  transition: var(--transicion);
}
.faq__pregunta:hover { background: var(--naranja-claro); }
.faq__item[open] .faq__pregunta { background: var(--naranja-claro); color: var(--naranja); }
.faq__respuesta {
  padding: 0 1rem 1rem;
  font-size: 0.9rem;
  color: var(--gris-texto);
  background: var(--blanco);
}

/* ── Footer ──────────────────────────────────────────────────── */
.site-footer {
  background: var(--pizarra);
  color: rgba(255,255,255,0.75);
  padding: 3rem 0 2rem;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.site-footer__marca {
  font-family: 'Barlow Semi Condensed', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
}
.site-footer__desc { font-size: 0.875rem; line-height: 1.6; }
.site-footer__heading {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 0.75rem;
}
.site-footer__links { list-style: none; }
.site-footer__links li { margin-bottom: 0.4rem; }
.site-footer__links a { color: rgba(255,255,255,0.65); font-size: 0.875rem; }
.site-footer__links a:hover { color: white; text-decoration: none; }
.site-footer__pronto { font-size: 0.875rem; opacity: 0.4; }
.site-footer__pronto em { font-style: italic; font-size: 12px; }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-principal { display: none; }
  .pais-selector { display: none; }
  .nav-toggle { display: flex; }

  body.nav-open .nav-principal {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--pizarra-med);
    padding: 1rem;
    z-index: 99;
  }

  .calc__campos { grid-template-columns: 1fr; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .categorias-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .site-footer__grid { grid-template-columns: 1fr; }
  .calc { padding: 1.25rem; }
}

/* ── Cat-cards (homepage categorías) ──────────────────────── */
.cat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}
.cat-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.1rem 1.2rem;
    background: #fff;
    border: 1px solid #e2e8ec;
    border-radius: 8px;
    text-decoration: none;
    color: var(--pizarra);
    transition: border-color .15s, box-shadow .15s;
}
.cat-card:hover {
    border-color: var(--naranja);
    box-shadow: 0 2px 12px rgba(212,98,26,.12);
}
.cat-card__icon { font-size: 1.8rem; flex-shrink: 0; line-height: 1; }
.cat-card__body strong { display: block; font-size: .95rem; margin-bottom: .15rem; }
.cat-card__body small  { display: block; color: var(--naranja); font-size: .75rem; font-weight: 600; margin-bottom: .35rem; }
.cat-card__body p      { font-size: .82rem; color: #5A6570; margin: 0; line-height: 1.4; }

/* ── calc-grid emoji cards ──────────────────────────────────── */
.calc-grid__card {
    text-align: center;
    padding: 1rem .8rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
}
.calc-grid__name { font-size: .82rem; line-height: 1.3; }

/* ── Título de sección (homepage) ───────────────────────── */
.seccion-titulo {
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .08em;
    color: #8a9aa6;
    text-transform: uppercase;
    margin: 0 0 1rem 0;
    padding-bottom: .5rem;
    border-bottom: 2px solid var(--naranja);
    display: inline-block;
}

/* ── Tarjetas emoji en homepage ─────────────────────────── */
.calc-grid__card {
    text-align: center;
    padding: 1rem .75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: .25rem;
}
.calc-grid__name {
    font-size: .8rem;
    line-height: 1.3;
    color: var(--pizarra);
}