/* ============================================================
   PISCINAS CARDIU — styles.css
   Paleta: blanco, azul piscina, gris oscuro, negro, turquesa
   Tipografías: Bricolage Grotesque (títulos) · Instrument Sans (texto)
   ============================================================ */

:root {
  --ink: #0B1520;        /* negro azulado profundo */
  --slate: #33414E;      /* gris oscuro */
  --pool: #0E7FA8;       /* azul piscina */
  --pool-dark: #0A6285;
  --aqua: #2BB8C9;       /* turquesa */
  --mist: #EAF4F7;       /* azul hielo (fondos alternos) */
  --white: #FFFFFF;
  --line: #D7E4EA;

  --font-display: "Bricolage Grotesque", Georgia, serif;
  --font-body: "Instrument Sans", -apple-system, Segoe UI, Roboto, sans-serif;

  --container: 1180px;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11, 21, 32, 0.10);
  --transition: 220ms ease;
}

/* ---------- Reset básico ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--slate);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--pool); text-decoration: none; }
a:hover { color: var(--pool-dark); }
ul { padding-left: 1.2rem; }

/* ---------- Accesibilidad ---------- */
:focus-visible {
  outline: 3px solid var(--aqua);
  outline-offset: 3px;
  border-radius: 4px;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------- Tipografía ---------- */
h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.12;
  margin: 0 0 0.6em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.2rem, 5.5vw, 3.9rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 1em; }

.eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pool);
  margin-bottom: 0.8rem;
}
.eyebrow-light { color: var(--aqua); }

.section-intro { max-width: 46rem; margin-bottom: 2.5rem; }

/* ---------- Layout ---------- */
.container {
  width: min(var(--container), 92%);
  margin-inline: auto;
}
.container-narrow { max-width: 820px; }
.section { padding: clamp(4rem, 9vw, 7rem) 0; }
.section-mist { background: var(--mist); }
.section-deep {
  background: linear-gradient(180deg, var(--ink) 0%, #102434 100%);
  color: #C9DAE3;
}
.section-deep h2 { color: var(--white); }
.section-deep h3 { color: var(--white); }

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 1rem 2rem;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition), color var(--transition), border-color var(--transition);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--pool), var(--aqua));
  color: var(--white);
  box-shadow: 0 8px 22px rgba(14, 127, 168, 0.35);
}
.btn-primary:hover { color: var(--white); box-shadow: 0 12px 28px rgba(14, 127, 168, 0.45); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.18); color: var(--white); }

.btn-lg { padding: 1.15rem 2.5rem; font-size: 1.12rem; }
.btn-sm { padding: 0.55rem 1.2rem; font-size: 0.95rem; }
.btn-block { width: 100%; }

/* ---------- Cabecera ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 21, 32, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--white);
}
.logo:hover { color: var(--white); }
.logo-mark { width: 38px; height: 38px; }
.logo-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.01em;
}
.logo-text strong { color: var(--aqua); font-weight: 700; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-menu a:not(.btn) {
  color: #D6E4EC;
  font-weight: 500;
  font-size: 0.98rem;
}
.nav-menu a:not(.btn):hover { color: var(--aqua); }
.btn-nav {
  background: linear-gradient(135deg, var(--pool), var(--aqua));
  color: var(--white);
  padding: 0.65rem 1.4rem;
  font-size: 0.95rem;
}
.btn-nav:hover { color: var(--white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
}
.nav-toggle span {
  width: 26px;
  height: 2.5px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: min(92vh, 860px);
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
  background: var(--ink);
}
.hero-media,
.hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11, 21, 32, 0.88) 0%, rgba(11, 21, 32, 0.55) 55%, rgba(14, 127, 168, 0.25) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 7rem 0 9rem;
  max-width: 760px;
}
.hero h1 { color: var(--white); }
.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: #DCEAF1;
  max-width: 40rem;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.2rem; }
.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.8rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.95rem;
  color: #BBD3DF;
}
.hero-proof li::before { content: "✓ "; color: var(--aqua); font-weight: 700; }

/* Línea de agua (firma) */
.waterline {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  z-index: 3;
  line-height: 0;
}
.waterline svg { width: 100%; height: 90px; display: block; }
.wave-1 { fill: rgba(255, 255, 255, 0.35); animation: waveShift 9s ease-in-out infinite alternate; }
.wave-2 { fill: var(--white); animation: waveShift 13s ease-in-out infinite alternate-reverse; }
@keyframes waveShift {
  from { transform: translateX(0); }
  to   { transform: translateX(-40px); }
}

/* ---------- Servicios ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.6rem;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--aqua);
}
.service-card-wide { grid-column: 1 / -1; }
.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--mist);
  color: var(--pool);
  margin-bottom: 1.1rem;
}
.service-icon svg { width: 28px; height: 28px; }
.service-list { margin: 0.8rem 0 0; color: var(--slate); }
.service-list li { margin-bottom: 0.3rem; }
.service-list li::marker { color: var(--aqua); }
.service-list-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.8rem;
  list-style: none;
  padding: 0;
}
.service-list-inline li {
  background: var(--mist);
  color: var(--pool-dark);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.92rem;
  margin: 0;
}

/* ---------- Por qué elegirnos ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.6rem;
  margin-top: 1.5rem;
}
.why-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  box-shadow: 0 4px 14px rgba(11, 21, 32, 0.06);
}
.why-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--pool), var(--aqua));
  color: var(--white);
  margin-bottom: 1rem;
}
.why-icon svg { width: 24px; height: 24px; }
.why-item h3 { font-size: 1.08rem; }
.why-item p { margin: 0; font-size: 0.97rem; }

/* ---------- Galería ---------- */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
}
.filter-btn {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.55rem 1.3rem;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  background: var(--white);
  color: var(--slate);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.filter-btn:hover { border-color: var(--aqua); color: var(--pool); }
.filter-btn.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
.gallery-item {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: zoom-in;
  aspect-ratio: 4 / 3;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease;
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-item figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 0.9rem 1rem;
  background: linear-gradient(0deg, rgba(11, 21, 32, 0.8), transparent);
  color: var(--white);
  font-size: 0.92rem;
  font-weight: 500;
}
.gallery-item.is-hidden { display: none; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(11, 21, 32, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.lightbox[hidden] { display: none; }
.lightbox figure { margin: 0; max-width: min(1000px, 90vw); }
.lightbox img {
  max-height: 78vh;
  width: auto;
  max-width: 100%;
  margin-inline: auto;
  border-radius: 10px;
}
.lightbox figcaption {
  color: #C9DAE3;
  text-align: center;
  margin-top: 0.8rem;
}
.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--white);
  font-size: 1.6rem;
  line-height: 1;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--transition);
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,0.25); }
.lightbox-close { top: 1.2rem; right: 1.2rem; }
.lightbox-prev { left: 1.2rem; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 1.2rem; top: 50%; transform: translateY(-50%); }

/* ---------- Proceso (marcas de profundidad) ---------- */
.process {
  list-style: none;
  counter-reset: step;
  margin: 3rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.4rem;
}
.process-step {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 1.6rem 1.3rem 1.4rem;
}
.process-step p { margin: 0; font-size: 0.95rem; }
.process-depth {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--aqua);
  border-bottom: 2px solid var(--aqua);
  padding-bottom: 0.25rem;
  margin-bottom: 0.9rem;
}
.process-step h3 { font-size: 1.05rem; }

/* ---------- Opiniones ---------- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}
.review-card {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: 0 4px 14px rgba(11, 21, 32, 0.05);
}
.stars { color: #F5A623; letter-spacing: 0.15em; font-size: 1.1rem; margin-bottom: 0.8rem; }
.review-card p { font-style: italic; }
.review-card footer { font-size: 0.92rem; color: var(--slate); }
.review-card cite { font-style: normal; font-weight: 600; color: var(--ink); }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 0.9rem; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1.15rem 3rem 1.15rem 1.4rem;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 1.3rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--pool);
  transition: transform var(--transition);
}
.faq-item[open] summary::after { content: "–"; }
.faq-item summary:hover { color: var(--pool); }
.faq-item p { padding: 0 1.4rem 1.3rem; margin: 0; }

/* ---------- Formulario ---------- */
.form-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3.5rem;
  align-items: start;
}
.form-benefits { list-style: none; padding: 0; margin-top: 1.5rem; }
.form-benefits li { margin-bottom: 0.6rem; padding-left: 1.6rem; position: relative; }
.form-benefits li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--aqua);
  font-weight: 700;
}

.quote-form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.2rem;
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
}
.form-field { margin-bottom: 1.1rem; }
.form-field label {
  display: block;
  font-weight: 600;
  font-size: 0.93rem;
  color: var(--ink);
  margin-bottom: 0.4rem;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--pool);
  box-shadow: 0 0 0 3px rgba(14, 127, 168, 0.18);
}
.form-field .is-invalid {
  border-color: #D6453D;
  box-shadow: 0 0 0 3px rgba(214, 69, 61, 0.14);
}
.field-error {
  color: #C0362E;
  font-size: 0.86rem;
  margin: 0.35rem 0 0;
}
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.checkbox { display: flex; gap: 0.6rem; align-items: flex-start; font-weight: 400 !important; }
.checkbox input { width: auto; margin-top: 0.3rem; }
.form-consent label { font-size: 0.92rem; }
.form-status { margin-top: 1rem; font-weight: 600; }
.form-status.ok { color: #1B7F4D; }
.form-status.error { color: #C0362E; }

/* ---------- CTA final ---------- */
.cta-final {
  background: linear-gradient(135deg, var(--ink) 0%, var(--pool-dark) 70%, var(--pool) 100%);
  color: #D9E8EF;
  text-align: center;
  padding: clamp(4.5rem, 9vw, 7rem) 0;
}
.cta-final h2 { color: var(--white); font-size: clamp(1.9rem, 4vw, 3rem); }
.cta-final p { max-width: 38rem; margin-inline: auto; font-size: 1.1rem; }
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: #A9BFCB; font-size: 0.96rem; }
.footer a { color: #CFE1EA; }
.footer a:hover { color: var(--aqua); }
.footer h3 { color: var(--white); font-size: 1.02rem; margin-bottom: 1rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.2fr 1.2fr;
  gap: 2.5rem;
  padding: 4rem 0 3rem;
}
.logo-footer { margin-bottom: 1rem; display: inline-block; }
.footer-social {
  display: flex;
  gap: 0.8rem;
  list-style: none;
  padding: 0;
  margin-top: 1.2rem;
}
.footer-social a {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  transition: border-color var(--transition), background var(--transition);
}
.footer-social a:hover { border-color: var(--aqua); background: rgba(43, 184, 201, 0.12); }
.footer-social svg { width: 20px; height: 20px; }
address { font-style: normal; }
address p { margin-bottom: 0.5rem; }
.footer-areas { line-height: 1.9; }
.map-placeholder {
  aspect-ratio: 4 / 3;
  border: 1.5px dashed rgba(255,255,255,0.25);
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  text-align: center;
  color: #7E97A5;
}
.footer-map iframe {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 0;
  border-radius: var(--radius);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.4rem 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
}
.footer-bottom p { margin: 0; }
.footer-bottom nav { display: flex; gap: 1.4rem; flex-wrap: wrap; }

/* ---------- WhatsApp flotante ---------- */
.whatsapp-float {
  position: fixed;
  right: 1.3rem;
  bottom: 1.3rem;
  z-index: 70;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #25D366;
  color: var(--white);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition);
}
.whatsapp-float:hover { transform: scale(1.08); color: var(--white); }
.whatsapp-float svg { width: 30px; height: 30px; }

/* ---------- Aviso de cookies ---------- */
.cookie-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 80;
  max-width: 560px;
  margin-inline: auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem 1.4rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}
.cookie-banner[hidden] { display: none; }
.cookie-banner p { margin: 0; flex: 1 1 260px; font-size: 0.92rem; }

/* ---------- Animaciones de aparición ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 650ms ease, transform 650ms ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Páginas legales ---------- */
.legal-page { padding: 4rem 0 5rem; }
.legal-page h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); }
.legal-page h2 { font-size: 1.35rem; margin-top: 2.2rem; }
.legal-page .container { max-width: 820px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); }
  .reviews-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--ink);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 0.6rem 1.2rem 1.2rem;
    display: none;
  }
  .nav-menu.is-open { display: flex; }
  .nav-menu li { padding: 0.5rem 0; }
  .nav-menu .btn-nav { margin-top: 0.6rem; text-align: center; }

  .services-grid { grid-template-columns: 1fr; }
  .form-layout { grid-template-columns: 1fr; gap: 2.2rem; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .process { grid-template-columns: 1fr 1fr; }
  .hero-content { padding: 5rem 0 8rem; }
}

@media (max-width: 560px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .btn { width: 100%; }
  .hero-actions .btn { width: 100%; }
  .lightbox-prev, .lightbox-next { display: none; }
}