/* Electrónica T.A. — grafito y azul del logo.
   El bloque de Kalpa usa la estética "Chrome Industrial" de Kalpa Tech. */
:root {
  --grafito: #363435;
  --grafito-900: #1c1b1c;
  --azul: #0057a6;
  --azul-claro: #3b8fe0;
  --hielo: #eef3f8;
  --blanco: #ffffff;
  --tinta: #1d2127;
  --gris: #5d6571;
  --borde: #dfe5ec;

  /* Kalpa — Chrome Industrial */
  --k-bg: #08080a;
  --k-surface: rgb(24 24 27 / 0.45);
  --k-border: #27272a;
  --k-text-2: #a1a1aa;
  --k-orange: #f97316;
  --k-sky: #38bdf8;

  --font-head: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --radius: 16px;
  --wrap: 1180px;
  --shadow: 0 12px 32px rgb(20 30 45 / 0.12);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--blanco);
  color: var(--tinta);
  font: 400 1.0625rem/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--azul-claro); outline-offset: 3px; }
.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }

h1, h2, h3 { font-family: var(--font-head); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; margin: 0; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); }
h3 { font-size: 1.2rem; }
.eyebrow {
  margin: 0 0 0.7rem;
  font: 700 0.8rem/1 var(--font-body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--azul-claro);
}
.eyebrow--dark { color: var(--azul); }

/* ---------- botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  border: 0;
  border-radius: 10px;
  padding: 0.9em 1.4em;
  font: 700 1rem/1 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 1.15em; height: 1.15em; fill: currentColor; }
.btn--primary { background: var(--azul); color: var(--blanco); }
.btn--primary:hover { background: #00478a; box-shadow: 0 10px 24px rgb(0 87 166 / 0.3); }
.btn--ghost { color: var(--blanco); box-shadow: inset 0 0 0 1.5px rgb(255 255 255 / 0.5); }
.btn--ghost:hover { background: rgb(255 255 255 / 0.08); }
.btn--wa { background: #25d366; color: #063; }
.btn--sm { padding: 0.6em 1em; font-size: 0.92rem; }
.btn:disabled { opacity: 0.6; cursor: default; transform: none; }

/* ---------- barra superior ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgb(255 255 255 / 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--borde);
}
.topbar__inner { display: flex; align-items: center; gap: 1.5rem; height: 64px; }
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.brand img { width: 52px; height: auto; }
.brand__name { font: 500 1.05rem var(--font-head); color: var(--grafito); white-space: nowrap; }
.brand__name b { color: var(--azul); }
.nav { display: flex; gap: 1.5rem; margin-left: auto; }
.nav a { text-decoration: none; font-weight: 600; color: var(--grafito); font-size: 0.97rem; }
.nav a:hover { color: var(--azul); }
@media (max-width: 900px) {
  .nav { display: none; }
  .topbar .btn { margin-left: auto; }
}
@media (max-width: 400px) {
  .topbar .btn span { display: none; }
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  color: var(--blanco);
  background:
    linear-gradient(100deg, rgb(28 27 28 / 0.97) 0%, rgb(28 27 28 / 0.88) 45%, rgb(10 30 60 / 0.72) 100%),
    url("/img/hero-pcb.webp") center / cover;
  padding: clamp(4rem, 10vw, 7.5rem) 0 5.5rem;
  overflow: hidden;
}
.hero__inner { max-width: 760px; margin-inline: max(16px, (100% - var(--wrap)) / 2) auto; }
.hero h1 { font-size: clamp(2.3rem, 6vw, 4.2rem); }
.accent { color: var(--azul-claro); }
.lead { font-size: 1.18rem; color: rgb(255 255 255 / 0.82); margin: 1.4rem 0 2rem; max-width: 36em; }
.actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.hero__stats {
  list-style: none;
  padding: 0;
  margin: 3rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.5rem;
}
.hero__stats li { display: grid; border-left: 2px solid var(--azul-claro); padding-left: 0.9rem; }
.hero__stats strong { font: 700 1.35rem var(--font-head); }
.hero__stats span { color: rgb(255 255 255 / 0.65); font-size: 0.9rem; }
.hero__kalpa {
  position: absolute;
  right: max(16px, (100% - var(--wrap)) / 2);
  bottom: 1.4rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: rgb(8 8 10 / 0.7);
  border: 1px solid var(--k-border);
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--k-text-2);
}
.hero__kalpa b { color: var(--blanco); }
.hero__kalpa .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--k-orange);
  box-shadow: 3px 0 0 var(--k-sky);
}
@media (max-width: 640px) {
  .hero__kalpa { position: static; margin: 2.5rem 16px 0; }
  .hero { padding-bottom: 2.5rem; }
}

/* ---------- Kalpa (Chrome Industrial) ---------- */
.kalpa {
  position: relative;
  background:
    linear-gradient(45deg, rgb(255 255 255 / 0.025) 25%, transparent 25% 75%, rgb(255 255 255 / 0.025) 75%) 0 0 / 28px 28px,
    var(--k-bg);
  color: var(--blanco);
  padding: 5.5rem 0;
}
.kalpa::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--k-orange), #facc15, #fff, var(--k-sky), #6366f1);
}
.kalpa__grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 3.5rem; align-items: start; }
@media (max-width: 900px) { .kalpa__grid { grid-template-columns: 1fr; } }
.kalpa__eyebrow {
  margin: 0 0 0.8rem;
  font: 700 0.8rem/1 var(--font-body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--k-text-2);
}
.kalpa__title {
  font-weight: 700;
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  letter-spacing: -0.03em;
  line-height: 0.98;
}
.shimmer {
  background: linear-gradient(100deg, #71717a 0%, #fff 25%, #a1a1aa 50%, #fff 75%, #71717a 100%) 0 0 / 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shimmer 6s linear infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }
.kalpa__quote {
  margin: 2rem 0;
  padding: 0 0 0 1.3rem;
  border-left: 2px solid var(--k-border);
  color: var(--k-text-2);
}
.kalpa__quote p { margin: 0 0 1rem; }
.kalpa__quote b { color: var(--blanco); font-weight: 700; }
.kalpa__quote footer { color: var(--blanco); font-weight: 700; }
.btn--kalpa {
  background: var(--blanco);
  color: var(--k-bg);
  box-shadow: -4px 0 0 rgb(249 115 22 / 0.5), 4px 0 0 rgb(56 189 248 / 0.5);
}
.btn--kalpa svg { fill: none; }
.btn--kalpa:hover { box-shadow: -6px 0 0 rgb(249 115 22 / 0.6), 6px 0 0 rgb(56 189 248 / 0.6); }
.kalpa__side {
  background: var(--k-surface);
  border: 1px solid var(--k-border);
  border-radius: var(--radius);
  padding: 2rem;
}
.kalpa__logo {
  width: min(260px, 70%);
  height: auto;
  filter: drop-shadow(-2px 0 0 rgb(249 115 22 / 0.45)) drop-shadow(2px 0 0 rgb(56 189 248 / 0.45));
}
.kalpa__tagline { margin: 1rem 0 1.5rem; color: var(--k-text-2); font-size: 1.05rem; }
.kalpa__caps { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.1rem; }
.kalpa__caps li {
  display: grid;
  padding: 0.75rem 0;
  border-top: 1px solid var(--k-border);
}
.kalpa__caps b { font-weight: 700; }
.kalpa__caps span { color: var(--k-text-2); font-size: 0.93rem; }
.kalpa__industries { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 3rem; }
.kalpa__industries span {
  border: 1px solid var(--k-border);
  border-radius: 999px;
  padding: 0.4em 1em;
  color: var(--k-text-2);
  font-size: 0.92rem;
}

/* ---------- secciones ---------- */
.section { padding: 5.5rem 0; }
.section--ice { background: var(--hielo); }
.section--dark { background: var(--grafito-900); color: var(--blanco); }
.section__head { max-width: 760px; margin-bottom: 2.8rem; }
.section__lead { margin: 1rem 0 0; color: rgb(255 255 255 / 0.75); font-size: 1.1rem; }
.section__lead--dark { color: var(--gris); }

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1.5rem;
  counter-reset: none;
}
.steps li { border-top: 3px solid var(--azul); padding-top: 1.4rem; }
.steps__n { font: 700 2.4rem/1 var(--font-head); color: var(--borde); display: block; margin-bottom: 0.6rem; }
.steps h3 { margin-bottom: 0.6rem; }
.steps p { margin: 0; color: var(--gris); }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 1.5rem; }
.card {
  background: var(--blanco);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--borde);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card img { aspect-ratio: 4 / 3; width: 100%; height: auto; object-fit: cover; }
.card__body { padding: 1.2rem 1.3rem 1.4rem; }
.card__body p { margin: 0.5rem 0 0; color: var(--gris); font-size: 0.98rem; }

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 0.8rem;
}
.gallery figure { margin: 0; border-radius: 12px; overflow: hidden; background: #000; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: scale 0.4s; }
.gallery figure:hover img { scale: 1.04; }
.gallery__big { grid-column: span 2; grid-row: span 2; }
@media (max-width: 760px) {
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 150px; }
}

.repairs { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr)); gap: 1.2rem; }
.repairs figure { margin: 0; position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 1; }
.repairs img { width: 100%; height: 100%; object-fit: cover; }
.repairs figcaption {
  position: absolute;
  inset: auto 0 0;
  padding: 2.5rem 1.1rem 1rem;
  background: linear-gradient(transparent, rgb(20 20 22 / 0.85));
  color: var(--blanco);
  font: 700 1.1rem var(--font-head);
}

/* ---------- contacto ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 3.5rem; align-items: start; }
@media (max-width: 860px) { .contact { grid-template-columns: 1fr; } }
.contact__list { list-style: none; padding: 0; margin: 2rem 0 1.5rem; display: grid; gap: 1rem; }
.contact__list li { display: grid; }
.contact__list span { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--gris); font-weight: 700; }
.contact__list a { font-weight: 700; color: var(--azul); text-decoration: none; font-size: 1.1rem; overflow-wrap: anywhere; }
.social { display: flex; gap: 1.2rem; font-weight: 700; }
.social a { color: var(--grafito); }
.form {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radius);
  padding: 2rem;
  display: grid;
  gap: 1.1rem;
  box-shadow: var(--shadow);
}
.form label { display: grid; gap: 0.35rem; font-weight: 700; font-size: 0.95rem; }
.form input, .form textarea {
  font: inherit;
  font-weight: 400;
  padding: 0.75rem 0.9rem;
  border: 1.5px solid var(--borde);
  border-radius: 10px;
  background: var(--blanco);
  color: var(--tinta);
  resize: vertical;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--azul); box-shadow: 0 0 0 3px rgb(0 87 166 / 0.15); }
.form [aria-invalid="true"] { border-color: #c62828; }
.form .btn { justify-self: start; }
.form__status { margin: 0; font-weight: 700; min-height: 1.5em; }
.form__status--ok { color: #1b7f3b; }
.form__status--error { color: #c62828; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- footer ---------- */
.footer { background: var(--grafito-900); color: rgb(255 255 255 / 0.7); padding: 2.2rem 0; font-size: 0.95rem; }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 2rem; }
.footer__inner img { width: 64px; height: auto; }
.footer p { margin: 0; }
.footer__kalpa { margin-left: auto !important; }
.footer__kalpa a { color: var(--blanco); font-weight: 700; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .shimmer { animation: none; }
  * { transition: none !important; }
}