/* =============================================================
   POLAR ICE GUAYAQUIL — styles.css
   Arquetipo: Glassmorphism Modern, adaptado a paleta "frost / hielo".
   Un único archivo, organizado por secciones. Sin preprocesador.
   ============================================================= */

/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg:        #eef6f9;   /* blanco-hielo cálido */
  --bg-2:      #dcedf5;   /* hielo pálido */
  --paper:     #ffffff;
  --glass:     rgba(255, 255, 255, 0.52);
  --glass-2:   rgba(255, 255, 255, 0.30);
  --glass-border: rgba(255, 255, 255, 0.65);

  --ink:       #0b2436;   /* azul-noche, nunca negro puro */
  --ink-soft:  #1c3a4d;
  --ink-mute:  #4d6a7a;
  --line:      rgba(11, 36, 54, 0.12);

  --accent:    #12b3d6;   /* cian hielo */
  --accent-2:  #3763ea;   /* azul cobalto */
  --accent-ink: #ffffff;
  --success:   #1fae72;
  --warn:      #d97a1f;

  --bg-dark:   #061b28;   /* azul-noche profundo para secciones oscuras */
  --bg-dark-2: #0c2c3e;
  --cream:     #eef6f9;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  --shadow-sm: 0 8px 24px -12px rgba(11, 36, 54, 0.25);
  --shadow-md: 0 24px 48px -20px rgba(11, 36, 54, 0.32);
  --shadow-lg: 0 40px 80px -30px rgba(11, 36, 54, 0.4);

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.7, 0, 0.84, 0);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Sora", var(--sans);

  --container: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --nav-h: 76px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  tab-size: 2;
  scroll-behavior: smooth;
  overflow-x: clip;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-soft);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.05; letter-spacing: -0.02em; font-family: var(--display); color: var(--ink); }
ul { list-style: none; padding: 0; }
input, textarea, select { font: inherit; color: inherit; }
::selection { background: var(--accent); color: #fff; }

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--ink); color: var(--cream);
  z-index: 9999; border-radius: 8px; font-weight: 600;
  transition: top .3s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .8rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent-2);
}
.section { position: relative; padding-block: clamp(3.5rem, 8vw, 7rem); }
.section-head { max-width: 640px; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); margin-block: .6rem 1rem; }
.section-head p { color: var(--ink-mute); font-size: 1.05rem; }

.badge-demo {
  display: inline-block; font-size: .68rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; padding: .2rem .55rem; border-radius: var(--radius-pill);
  background: rgba(217, 122, 31, .14); color: var(--warn); border: 1px solid rgba(217,122,31,.3);
  margin-bottom: .6rem;
}

/* Reveal-on-scroll — SIN JavaScript el contenido se ve siempre (regla 13).
   Solo cuando <html> tiene la clase "js" (añadida por un script síncrono en
   el <head>, antes de pintar) se oculta para animarse al hacer scroll. */
.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease-out), transform .7s var(--ease-out); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-split] { opacity: 1; transform: none; }

/* =============================================================
   4. Typography helpers
   ============================================================= */
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--ink-mute); }
em { font-style: italic; color: var(--accent-2); }

/* =============================================================
   5. Components
   ============================================================= */

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .85rem 1.5rem; border-radius: var(--radius-pill); font-weight: 600; font-size: .96rem;
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out), background .35s var(--ease-out);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff; box-shadow: var(--shadow-sm);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost {
  background: var(--glass); border: 1px solid var(--glass-border);
  color: var(--ink); backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
}
.btn-ghost:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; pointer-events: none; }

/* Glass card — solid fallback first */
.glass-card {
  background: rgba(255,255,255,0.78);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.4rem, 3vw, 2.2rem);
  box-shadow: var(--shadow-sm);
}
@supports (backdrop-filter: blur(20px)) {
  .glass-card {
    background: var(--glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
  }
}

/* Nav */
.nav {
  position: fixed; inset-inline: 0; top: 0; z-index: 500;
  height: var(--nav-h); display: flex; align-items: center;
}
.nav-inner {
  width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  height: calc(var(--nav-h) - 16px); margin-top: 12px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  padding-inline: 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: background .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
@supports (backdrop-filter: blur(20px)) {
  .nav-inner { background: rgba(255,255,255,0.45); backdrop-filter: blur(18px) saturate(180%); -webkit-backdrop-filter: blur(18px) saturate(180%); }
}
.nav.is-scrolled .nav-inner { box-shadow: var(--shadow-md); }
.nav-brand { display: flex; align-items: center; gap: .55rem; font-family: var(--display); font-weight: 700; color: var(--ink); font-size: 1.05rem; }
.nav-brand .dot { width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.nav-links { display: none; align-items: center; gap: 1.8rem; }
.nav-links a { font-size: .92rem; font-weight: 500; color: var(--ink-soft); position: relative; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -5px; height: 2px;
  background: var(--accent-2); transition: right .35s var(--ease-out);
}
.nav-links a:hover::after { right: 0; }
.nav-cta { display: none; }
.nav-toggle {
  display: inline-flex; width: 40px; height: 40px; border-radius: 50%; align-items: center; justify-content: center;
  background: var(--glass-2); border: 1px solid var(--glass-border);
}
@media (min-width: 960px) {
  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
  .nav-toggle { display: none; }
}

.nav-drawer {
  position: fixed; inset: 88px 12px auto 12px; z-index: 490;
  background: rgba(255,255,255,0.94); border: 1px solid var(--glass-border);
  border-radius: var(--radius-md); padding: 1.2rem; box-shadow: var(--shadow-lg);
  display: grid; gap: .3rem;
  transform-origin: top center;
  opacity: 0; transform: scale(.96) translateY(-8px); pointer-events: none;
  transition: opacity .25s var(--ease-out), transform .25s var(--ease-out);
}
.nav-drawer.is-open { opacity: 1; transform: none; pointer-events: auto; }
.nav-drawer a { display: block; padding: .7rem .5rem; border-radius: var(--radius-sm); font-weight: 600; color: var(--ink); }
.nav-drawer a:hover { background: var(--bg-2); }

/* =============================================================
   6. Sections
   ============================================================= */

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  padding-top: calc(var(--nav-h) + 2rem);
  padding-bottom: 4rem;
  overflow: clip;
}
.hero-mesh {
  position: absolute; inset: -10% -10% 0 -10%; z-index: -1;
  background:
    radial-gradient(at 18% 22%, rgba(18,179,214,0.35) 0%, transparent 52%),
    radial-gradient(at 82% 12%, rgba(55,99,234,0.28) 0%, transparent 55%),
    radial-gradient(at 50% 92%, rgba(18,179,214,0.22) 0%, transparent 55%),
    var(--bg);
  filter: blur(50px) saturate(150%);
  animation: meshDrift 32s ease-in-out infinite;
}
@keyframes meshDrift {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.15) rotate(6deg); }
}
.hero-grid { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 960px) { .hero-grid { grid-template-columns: 1.1fr .9fr; gap: 3rem; } }

.hero-title { font-size: clamp(2.3rem, 5.4vw, 3.7rem); max-width: 16ch; }
.hero-sub { margin-top: 1.1rem; max-width: 52ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 1.8rem; }
.hero-stats { display: flex; gap: clamp(1.2rem, 3vw, 2.4rem); margin-top: 2.4rem; flex-wrap: wrap; }
.hero-stat b { display: block; font-family: var(--display); font-size: 1.7rem; color: var(--ink); }
.hero-stat span { font-size: .82rem; color: var(--ink-mute); }

.hero-visual { position: relative; }
.hero-card {
  position: relative; border-radius: var(--radius-lg);
  padding: 1.6rem; display: grid; gap: 1rem;
  animation: floatY 7s ease-in-out infinite;
}
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
.hero-card-row { display: flex; align-items: center; justify-content: space-between; gap: .8rem; }
.hero-card-row .ico {
  width: 44px; height: 44px; border-radius: var(--radius-sm); display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
}
.hero-mini-chip {
  display: inline-flex; align-items: center; gap: .4rem; font-size: .78rem; font-weight: 600;
  padding: .35rem .7rem; border-radius: var(--radius-pill); background: rgba(31,174,114,.14); color: var(--success);
}

/* --- Servicios --- */
.services-grid { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.service-card { transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out); }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.service-card .ico {
  width: 52px; height: 52px; border-radius: var(--radius-sm); display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(18,179,214,.16), rgba(55,99,234,.16)); color: var(--accent-2);
  margin-bottom: 1rem;
}
.service-card h3 { font-size: 1.15rem; margin-bottom: .4rem; }
.service-card p { color: var(--ink-mute); font-size: .95rem; }

/* --- Diferenciadores --- */
.diff-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.diff-card { text-align: left; }
.diff-card .num { font-family: var(--display); font-size: 1.6rem; color: var(--accent-2); margin-bottom: .4rem; display: block; }

/* --- Inverter vs Convencional --- */
.compare-grid { display: grid; gap: 1.2rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .compare-grid { grid-template-columns: 1fr 1fr; } }
.compare-card h3 { display: flex; align-items: center; gap: .6rem; margin-bottom: 1rem; }
.compare-card.inverter { border-color: rgba(18,179,214,.4); }
.compare-card ul { display: grid; gap: .7rem; }
.compare-card li { display: flex; gap: .6rem; font-size: .94rem; color: var(--ink-soft); }
.compare-card li::before { content: "✓"; color: var(--success); font-weight: 800; flex-shrink: 0; }
.compare-card.convencional li::before { content: "•"; color: var(--ink-mute); }

/* --- Proceso --- */
.process-list { display: grid; gap: 1rem; }
@media (min-width: 960px) { .process-list { grid-template-columns: repeat(5, 1fr); } }
.process-step { text-align: left; }
.process-step .num {
  width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center;
  font-family: var(--display); font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); margin-bottom: 1rem;
}
.process-step h3 { font-size: 1.02rem; margin-bottom: .35rem; }
.process-step p { font-size: .88rem; color: var(--ink-mute); }

/* --- CTA calculadora banda --- */
.calc-banner {
  border-radius: var(--radius-lg); padding: clamp(2rem, 5vw, 3.2rem);
  background:
    linear-gradient(120deg, rgba(6,27,40,.88), rgba(12,44,62,.9)),
    url("assets/img/instalacion-detalle.webp") center/cover no-repeat;
  color: var(--cream); display: grid; gap: 1.6rem; align-items: center;
  position: relative; overflow: clip;
}
.calc-banner::before {
  content: ""; position: absolute; inset: -60% -20% -60% -20%;
  background: radial-gradient(45% 45% at 30% 30%, rgba(18,179,214,.35), transparent 70%),
              radial-gradient(45% 45% at 80% 70%, rgba(55,99,234,.3), transparent 70%);
  filter: blur(70px); pointer-events: none;
}
@media (min-width: 860px) { .calc-banner { grid-template-columns: 1.3fr .7fr; } }
.calc-banner h2 { color: #fff; }
.calc-banner p { color: rgba(238,246,249,.78); }
.calc-banner .btn-primary { background: #fff; color: var(--bg-dark); }

/* --- Testimonios --- */
.testi-grid { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.testi-card p { font-style: italic; color: var(--ink-soft); margin-bottom: 1rem; }
.testi-card footer { display: flex; align-items: center; gap: .7rem; }
.testi-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); display: grid; place-items: center;
  color: #fff; font-weight: 700; font-family: var(--display);
}
.testi-name { font-weight: 700; font-size: .92rem; color: var(--ink); }
.testi-role { font-size: .8rem; color: var(--ink-mute); }

/* --- FAQ --- */
.faq-list { display: grid; gap: .8rem; max-width: 780px; margin-inline: auto; }
.faq-item { border-radius: var(--radius-md); overflow: hidden; }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.1rem 1.4rem; text-align: left; font-weight: 600; color: var(--ink); font-size: 1rem;
}
.faq-q .plus { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: var(--bg-2); display: grid; place-items: center; transition: transform .35s var(--ease-out); }
.faq-item.is-open .faq-q .plus { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s var(--ease-out); }
.faq-a-inner { padding: 0 1.4rem 1.2rem; color: var(--ink-mute); font-size: .95rem; }
.faq-item.is-open .faq-a { max-height: 320px; }

/* --- Contacto --- */
.contact-grid { display: grid; gap: 2rem; }
@media (min-width: 960px) { .contact-grid { grid-template-columns: .9fr 1.1fr; } }
.contact-info-list { display: grid; gap: 1rem; margin-top: 1.4rem; }
.contact-info-item { display: flex; gap: .8rem; align-items: flex-start; }
.contact-info-item .ico {
  width: 38px; height: 38px; border-radius: var(--radius-sm); flex-shrink: 0;
  background: rgba(18,179,214,.14); color: var(--accent-2); display: grid; place-items: center;
}
.form-field { display: grid; gap: .4rem; margin-bottom: 1rem; }
.form-field label { font-size: .86rem; font-weight: 600; color: var(--ink); }
.form-field input, .form-field select, .form-field textarea {
  padding: .8rem 1rem; border-radius: var(--radius-sm); border: 1px solid var(--line);
  background: rgba(255,255,255,.75);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--accent-2); }
.form-row { display: grid; gap: 1rem; }
@media (min-width: 620px) { .form-row.two { grid-template-columns: 1fr 1fr; } }
.form-consent { display: flex; gap: .6rem; align-items: flex-start; font-size: .84rem; color: var(--ink-mute); margin-bottom: 1.1rem; }
.form-consent input { margin-top: .2rem; }
.form-note { font-size: .78rem; color: var(--ink-mute); margin-top: .6rem; }
.form-status { margin-top: .8rem; font-size: .9rem; padding: .7rem 1rem; border-radius: var(--radius-sm); display: none; }
.form-status.is-visible { display: block; }
.form-status.ok { background: rgba(31,174,114,.14); color: var(--success); }
.form-status.err { background: rgba(217,60,60,.12); color: #c23a3a; }

/* --- Footer --- */
.footer {
  background: linear-gradient(180deg, var(--bg-dark), var(--bg-dark-2));
  color: rgba(238,246,249,.82); padding-block: 3.5rem 2rem;
}
.footer h4 { color: #fff; font-size: 1rem; margin-bottom: .9rem; }
.footer-grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.footer a { color: rgba(238,246,249,.72); font-size: .9rem; }
.footer a:hover { color: #fff; }
.footer-bottom {
  margin-top: 2.6rem; padding-top: 1.6rem; border-top: 1px solid rgba(255,255,255,.12);
  display: flex; flex-wrap: wrap; gap: .8rem; justify-content: space-between; font-size: .82rem; color: rgba(238,246,249,.55);
}

/* =============================================================
   7. Widget de chat IA
   ============================================================= */
.chat-launcher {
  position: fixed; right: clamp(14px, 3vw, 28px); bottom: clamp(14px, 3vw, 28px); z-index: 800;
  width: 62px; height: 62px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
  display: grid; place-items: center; box-shadow: var(--shadow-lg);
  transition: transform .35s var(--ease-bounce);
}
.chat-launcher:hover { transform: scale(1.08); }
.chat-launcher .badge-new {
  position: absolute; top: -4px; right: -4px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--warn); border: 2px solid #fff;
}

.chat-panel {
  position: fixed; right: clamp(10px, 3vw, 28px); bottom: clamp(88px, 12vw, 108px); z-index: 810;
  width: min(392px, calc(100vw - 20px)); height: min(600px, calc(100vh - 140px));
  background: rgba(255,255,255,.96); border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  display: grid; grid-template-rows: auto 1fr auto; overflow: hidden;
  transform: translateY(16px) scale(.98); opacity: 0; pointer-events: none;
  transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
}
@supports (backdrop-filter: blur(20px)) { .chat-panel { background: rgba(255,255,255,.9); backdrop-filter: blur(22px) saturate(180%); } }
.chat-panel.is-open { transform: none; opacity: 1; pointer-events: auto; }

.chat-header {
  display: flex; align-items: center; justify-content: space-between; gap: .6rem;
  padding: 1rem 1.1rem; background: linear-gradient(120deg, var(--accent), var(--accent-2)); color: #fff;
}
.chat-header-id { display: flex; align-items: center; gap: .6rem; }
.chat-avatar { width: 34px; height: 34px; border-radius: 50%; background: rgba(255,255,255,.22); display: grid; place-items: center; }
.chat-header strong { display: block; font-size: .95rem; }
.chat-header small { display: block; font-size: .74rem; opacity: .85; }
.chat-header-actions { display: flex; gap: .3rem; }
.chat-icon-btn { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: rgba(255,255,255,.16); color: #fff; }
.chat-icon-btn:hover { background: rgba(255,255,255,.28); }

.chat-body { overflow-y: auto; padding: 1rem 1rem .4rem; display: grid; gap: .7rem; align-content: start; }
.chat-msg { max-width: 86%; padding: .65rem .9rem; border-radius: var(--radius-md); font-size: .9rem; line-height: 1.5; }
.chat-msg.bot { background: var(--bg-2); color: var(--ink-soft); justify-self: start; border-bottom-left-radius: 4px; }
.chat-msg.user { background: linear-gradient(120deg, var(--accent), var(--accent-2)); color: #fff; justify-self: end; border-bottom-right-radius: 4px; }
.chat-msg.typing { display: flex; gap: 4px; align-items: center; }
.chat-msg.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-mute); animation: typingBounce 1.1s infinite ease-in-out; }
.chat-msg.typing span:nth-child(2) { animation-delay: .15s; }
.chat-msg.typing span:nth-child(3) { animation-delay: .3s; }
@keyframes typingBounce { 0%, 60%, 100% { transform: translateY(0); opacity: .5; } 30% { transform: translateY(-4px); opacity: 1; } }

.chat-suggestions { display: flex; flex-wrap: wrap; gap: .4rem; padding: 0 1rem .6rem; }
.chat-chip {
  font-size: .78rem; padding: .4rem .75rem; border-radius: var(--radius-pill);
  background: var(--bg-2); color: var(--ink-soft); border: 1px solid var(--line);
}
.chat-chip:hover { background: rgba(18,179,214,.14); color: var(--accent-2); }

.chat-footer { border-top: 1px solid var(--line); padding: .7rem; display: grid; grid-template-columns: 1fr auto; gap: .5rem; }
.chat-footer textarea {
  resize: none; max-height: 84px; padding: .65rem .9rem; border-radius: var(--radius-md);
  border: 1px solid var(--line); background: var(--bg-2); font-size: .9rem;
}
.chat-send {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; flex-shrink: 0;
}
.chat-send[disabled] { opacity: .5; }

.chat-email-form { padding: .8rem 1rem 1rem; border-top: 1px solid var(--line); display: none; gap: .5rem; }
.chat-email-form.is-open { display: grid; }
.chat-email-form input { padding: .6rem .8rem; border-radius: var(--radius-sm); border: 1px solid var(--line); font-size: .86rem; }
.chat-email-form .row { display: flex; gap: .5rem; }
.chat-email-note { font-size: .74rem; color: var(--ink-mute); }

.chat-cta-inline {
  margin: .2rem 1rem .8rem; padding: .7rem .9rem; border-radius: var(--radius-md);
  background: rgba(31,174,114,.12); color: var(--success); font-size: .82rem; font-weight: 600;
  display: flex; align-items: center; gap: .5rem;
}
.chat-cta-inline[hidden] { display: none; } /* el atributo hidden debe ganar siempre al display:flex de arriba */

/* =============================================================
   8. Calculadora BTU (calculadora.html)
   ============================================================= */
.calc-shell { padding-top: calc(var(--nav-h) + 2.4rem); padding-bottom: 5rem; }
.no-js [data-calc-wizard] { display: none; } /* sin JS se muestra el <noscript> con un enlace de contacto */
.calc-wizard { max-width: 760px; margin-inline: auto; }
.calc-progress { display: flex; gap: .4rem; margin-bottom: 1.6rem; }
.calc-progress i { flex: 1; height: 5px; border-radius: var(--radius-pill); background: var(--line); overflow: hidden; }
.calc-progress i b { display: block; height: 100%; width: 0%; background: linear-gradient(120deg, var(--accent), var(--accent-2)); transition: width .5s var(--ease-out); }
.calc-progress i.is-done b, .calc-progress i.is-active b { width: 100%; }

.calc-step { display: none; }
.calc-step.is-active { display: block; animation: stepIn .45s var(--ease-out); }
@keyframes stepIn { from { opacity: 0; transform: translateX(14px); } to { opacity: 1; transform: none; } }
.calc-step h2 { font-size: 1.5rem; margin-bottom: .3rem; }
.calc-step .step-sub { color: var(--ink-mute); margin-bottom: 1.6rem; }

.option-grid { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.option-card {
  border: 2px solid var(--line); border-radius: var(--radius-md); padding: 1.1rem;
  text-align: left; background: rgba(255,255,255,.65); transition: border-color .3s var(--ease-out), transform .3s var(--ease-out);
  display: grid; gap: .3rem;
}
.option-card:hover { transform: translateY(-3px); }
.option-card.is-selected { border-color: var(--accent-2); background: rgba(55,99,234,.08); }
.option-card .ico { font-size: 1.4rem; }
.option-card b { font-size: .96rem; color: var(--ink); }
.option-card span { font-size: .8rem; color: var(--ink-mute); }

.calc-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2.2rem; }

.calc-gate {
  max-width: 480px; margin-inline: auto; text-align: center;
}
.calc-gate .glass-card { text-align: left; }

.result-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); margin-top: 1.6rem; }
.result-tile { text-align: center; }
.result-tile .label { font-size: .8rem; color: var(--ink-mute); text-transform: uppercase; letter-spacing: .04em; }
.result-tile .value { font-family: var(--display); font-size: 1.7rem; color: var(--ink); margin-top: .3rem; }
.result-tile.highlight { background: linear-gradient(120deg, rgba(18,179,214,.14), rgba(55,99,234,.14)); border-color: rgba(55,99,234,.3); }
.result-equip { margin-top: 1.4rem; padding: 1.2rem; border-radius: var(--radius-md); background: var(--bg-2); display: flex; align-items: center; gap: 1rem; }
.result-equip .ico { width: 46px; height: 46px; border-radius: var(--radius-sm); background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; display: grid; place-items: center; flex-shrink: 0; }
.result-notice { margin-top: 1.2rem; font-size: .84rem; color: var(--ink-mute); background: rgba(217,122,31,.1); border: 1px solid rgba(217,122,31,.25); padding: .8rem 1rem; border-radius: var(--radius-sm); }
.result-cta { margin-top: 1.6rem; display: flex; flex-wrap: wrap; gap: .8rem; }

/* =============================================================
   9. Efectos (animaciones)
   ============================================================= */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* View transitions (multi-page) */
@view-transition { navigation: auto; }
::view-transition-old(root), ::view-transition-new(root) {
  animation-duration: .5s; animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}
::view-transition-old(root) { animation-name: fadeOutUp; }
::view-transition-new(root) { animation-name: fadeInUpVT; }
@keyframes fadeOutUp { to { opacity: 0; transform: translateY(-10px); } }
@keyframes fadeInUpVT { from { opacity: 0; transform: translateY(10px); } }

/* =============================================================
   9b. Fotografía (IA) — hero, quiénes-somos, banner, proceso
   ============================================================= */
.hero-photo-frame {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); aspect-ratio: 2 / 3; max-height: 620px;
}
.hero-photo-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-photo-frame::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(185deg, rgba(6,27,40,0) 42%, rgba(6,27,40,.55) 100%);
}
.hero-visual .hero-card { margin: -3.4rem 1.2rem 0; position: relative; z-index: 1; }
@media (max-width: 959px) {
  .hero-photo-frame { max-height: 420px; }
  .hero-visual .hero-card { margin: -2.6rem .4rem 0; }
}

.about-grid { display: grid; gap: 2.2rem; align-items: center; }
@media (min-width: 900px) { .about-grid { grid-template-columns: 1fr 1fr; gap: 3.2rem; } }
.about-photo img {
  width: 100%; display: block; border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  object-fit: cover; aspect-ratio: 3 / 2;
}
.about-badges { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.4rem; }
.badge-pill {
  font-size: .82rem; font-weight: 600; padding: .45rem .9rem; border-radius: var(--radius-pill);
  background: rgba(18,179,214,.12); color: var(--accent-2);
}

.process-media-grid { display: grid; gap: 2.2rem; align-items: center; }
@media (min-width: 900px) { .process-media-grid { grid-template-columns: .95fr 1.05fr; gap: 3rem; } }
.process-photo img {
  width: 100%; display: block; border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  object-fit: cover; aspect-ratio: 3 / 2;
}

/* =============================================================
   10. Responsive (mobile-first — breakpoints ya integrados arriba)
   ============================================================= */
@media (min-width: 540px) { .hero-actions .btn { width: auto; } }
@media (min-width: 1600px) { .container { max-width: 1360px; } }

/* =============================================================
   11. Reduced-motion — solo lo intrusivo
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .hero-mesh { animation: none; }
  .hero-card { animation: none; }
  .calc-banner::before { animation: none; }
  /* NO se desactivan: tilts, hovers, fades, reveals, chat typing */
}