/* =========================================================
   CenBit - Servicio técnico de PC y Notebooks
   Tema oscuro con verde tecnológico
   ========================================================= */

/* ---------- Variables ---------- */
:root {
  --bg: #080b0a;
  --bg-alt: #0e1412;
  --surface: #131b17;
  --line: #22302a;
  --text: #eaf3ee;
  --muted: #94a89e;
  --green: #35ff8a;
  --green-dark: #14c964;
  --danger: #ff6b6b;
  --font-title: "Unbounded", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --radius: 12px;
  --header-h: 66px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 1.05rem/1.65 var(--font-body); -webkit-font-smoothing: antialiased; }
h1, h2, h3 { font-family: var(--font-title); font-weight: 500; line-height: 1.2; margin: 0 0 .6em; }
p { margin: 0 0 1em; }
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
.container { width: min(1120px, 100% - 2.5rem); margin-inline: auto; }

/* ---------- Botones ---------- */
.btn {
  display: inline-block; padding: .9rem 1.5rem; background: var(--green); color: #03110a;
  font: 700 1rem var(--font-body); border: 2px solid var(--green); border-radius: var(--radius);
  cursor: pointer; transition: background .2s, box-shadow .2s;
}
.btn:hover { text-decoration: none; background: var(--green-dark); border-color: var(--green-dark); box-shadow: 0 0 28px rgba(53, 255, 138, .35); }
.btn--ghost { background: transparent; color: var(--green); }
.btn--ghost:hover { background: rgba(53, 255, 138, .1); box-shadow: none; }
.btn--small { padding: .5rem 1rem; font-size: .92rem; }
.btn--block { width: 100%; }

/* ---------- Franja superior ---------- */
.topbar { background: var(--green); color: #03110a; text-align: center; font-size: .88rem; font-weight: 700; padding: .45rem 1rem; }
.topbar p { margin: 0; }
.topbar a { color: #03110a; text-decoration: underline; }

/* ---------- Encabezado ---------- */
.header { position: sticky; top: 0; z-index: 50; height: var(--header-h); background: rgba(8, 11, 10, .93); backdrop-filter: blur(8px); border-bottom: 1px solid transparent; transition: border-color .3s; }
.header.is-scrolled { border-bottom-color: var(--line); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: .6rem; color: var(--text); font: 700 1.25rem var(--font-title); }
.logo:hover { text-decoration: none; }
.logo b { color: var(--green); }
.logo__mark { font: 700 .85rem var(--font-body); color: var(--green); border: 1.5px solid var(--green); border-radius: 6px; padding: .15rem .4rem; }
.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav a:not(.btn) { color: var(--muted); font-size: .95rem; font-weight: 500; }
.nav a:not(.btn):hover { color: var(--text); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; padding: .5rem; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--text); transition: transform .25s, opacity .25s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 4.5rem 0 5rem;
  background:
    radial-gradient(600px 380px at 85% 20%, rgba(53, 255, 138, .12), transparent 70%),
    linear-gradient(rgba(53, 255, 138, .035) 1px, transparent 1px) 0 0 / 100% 48px,
    linear-gradient(90deg, rgba(53, 255, 138, .035) 1px, transparent 1px) 0 0 / 48px 100%,
    var(--bg);
}
.hero__grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 3.5rem; align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5.4vw, 4rem); font-weight: 700; letter-spacing: -.03em; }
.hero__lead { color: var(--muted); font-size: 1.15rem; max-width: 32em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 1.8rem; }

/* Selector "¿Qué le pasa a tu equipo?" */
.picker { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 1.8rem; box-shadow: 0 0 70px rgba(53, 255, 138, .08); }
.picker h2 { font-size: 1.3rem; margin-bottom: .3em; }
.picker p { color: var(--muted); font-size: .95rem; }
.picker__grid { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; }
.chip {
  display: flex; align-items: center; min-height: 58px; padding: .7rem 1rem; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  font-weight: 700; font-size: .95rem; line-height: 1.3; transition: border-color .2s, background .2s, color .2s;
}
.chip:hover { text-decoration: none; border-color: var(--green); background: var(--green); color: #03110a; }

/* ---------- Datos de confianza ---------- */
.facts { background: var(--bg-alt); border-block: 1px solid var(--line); }
.facts__list { list-style: none; margin: 0 auto; padding: 1.2rem 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; color: var(--muted); font-size: .95rem; }
.facts__list b { display: block; color: var(--text); font-family: var(--font-title); font-weight: 500; font-size: .95rem; }

/* ---------- Secciones ---------- */
.section { padding: 5.5rem 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section__title { font-size: clamp(1.6rem, 3.4vw, 2.4rem); letter-spacing: -.02em; }
.section__intro { color: var(--muted); max-width: 34em; margin-bottom: 2.5rem; }

/* ---------- Servicios ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.7rem; transition: border-color .2s; }
.card:hover { border-color: var(--green); }
.card--wide { grid-column: span 2; }
.card--accent { background: linear-gradient(135deg, #123a26, var(--surface)); border-color: #1d6b42; }
.card h3 { font-size: 1.1rem; }
.card p { color: var(--muted); font-size: 1rem; flex: 1; }
.card__link { font-weight: 700; font-size: .95rem; }

/* ---------- Proceso ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; counter-reset: paso; }
.steps li { counter-increment: paso; padding-top: 1.2rem; border-top: 2px solid var(--line); }
.steps li::before { content: counter(paso); display: block; font: 700 3.2rem/1 var(--font-title); color: transparent; -webkit-text-stroke: 1.5px var(--green); margin-bottom: 1rem; }
.steps h3 { font-size: 1.05rem; }
.steps p { color: var(--muted); font-size: .98rem; margin: 0; }

/* ---------- Por qué elegirnos ---------- */
.why { display: grid; grid-template-columns: 1fr 1.4fr; gap: 4rem; align-items: start; }
.why .section__intro { margin: 0; }
.why__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 2rem 1.8rem; }
.why__list li { border-left: 3px solid var(--green); padding-left: 1.1rem; }
.why__list h3 { font-size: 1.05rem; margin-bottom: .3em; }
.why__list p { color: var(--muted); font-size: .98rem; margin: 0; }

/* ---------- Zona y taller ---------- */
.zone { display: grid; grid-template-columns: 1fr 1.1fr; gap: 3.5rem; align-items: start; }
.zone__tags { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 2rem; }
.tag { border: 1px solid var(--green); color: var(--green); border-radius: 999px; padding: .4rem 1rem; font-weight: 700; }
.tag--big { font: 500 1.05rem var(--font-title); padding: .8rem 1.4rem; background: rgba(53, 255, 138, .08); }
.shop { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 1.8rem; }
.shop h3 { font-size: 1.2rem; }
.shop p { color: var(--muted); }
.shop b { color: var(--text); }

.shop .btn { margin-top: .4rem; }
.shop__sub { margin: 1.4rem 0 .6rem; color: var(--text); font: 500 1rem var(--font-title); }
.shop__photo { display: block; width: 100%; border-radius: var(--radius); margin: 1.2rem 0; }
.checks { list-style: none; margin: 0 0 1.6rem; padding: 0; }
.checks li { position: relative; padding: .55rem 0 .55rem 1.9rem; color: var(--muted); border-bottom: 1px solid var(--line); }
.checks li::before { content: ""; position: absolute; left: .2rem; top: 1rem; width: 11px; height: 6px; border-left: 2px solid var(--green); border-bottom: 2px solid var(--green); transform: rotate(-45deg); }

/* ---------- Preguntas frecuentes ---------- */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 1.2rem 2rem 1.2rem 0; font-weight: 700; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 1rem; color: var(--green); font-size: 1.6rem; line-height: 1; }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { color: var(--muted); margin: 0 0 1.2rem; max-width: 40em; }

/* ---------- Contacto ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 4rem; align-items: start; }
.phone { display: block; font: 700 clamp(1.8rem, 4vw, 2.6rem) var(--font-title); letter-spacing: -.02em; }
.phone__note { color: var(--muted); margin-bottom: 1.8rem; }

/* ---------- Formulario ---------- */
.form { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 2rem; }
.field { margin-bottom: 1.1rem; }
.field label { display: block; margin-bottom: .4rem; font-size: .95rem; font-weight: 700; }
.field input, .field select, .field textarea { width: 100%; padding: .8rem 1rem; background: var(--bg); color: var(--text); font: inherit; border: 1px solid var(--line); border-radius: 8px; transition: border-color .2s, box-shadow .2s; }
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(53, 255, 138, .15); }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--danger); }
.error { display: block; min-height: 1.2em; margin-top: .3rem; color: var(--danger); font-size: .85rem; }
.form__status { margin: 1rem 0 0; min-height: 1.5em; color: var(--green); font-size: .95rem; text-align: center; }

/* ---------- Pie ---------- */
.footer { border-top: 1px solid var(--line); padding: 1.8rem 0 5.5rem; color: var(--muted); font-size: .92rem; }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; }
.footer p { margin: 0; }

/* ---------- WhatsApp flotante ---------- */
.wa-float { position: fixed; right: 1.2rem; bottom: 1.2rem; z-index: 60; display: grid; place-items: center; width: 60px; height: 60px; border-radius: 50%; background: #25d366; color: #fff; animation: pulse 2.4s infinite; transition: transform .2s; }
.wa-float:hover { transform: scale(1.08); text-decoration: none; }
@keyframes pulse { 0% { box-shadow: 0 6px 20px rgba(0,0,0,.5), 0 0 0 0 rgba(37,211,102,.55); } 70%, 100% { box-shadow: 0 6px 20px rgba(0,0,0,.5), 0 0 0 16px rgba(37,211,102,0); } }

/* ---------- Tablet ---------- */
@media (max-width: 960px) {
  .hero__grid, .why, .zone, .contact { grid-template-columns: 1fr; gap: 2.5rem; }
  .cards { grid-template-columns: 1fr 1fr; }
  .steps, .facts__list { grid-template-columns: 1fr 1fr; }
}

/* ---------- Celular ---------- */
@media (max-width: 720px) {
  body { font-size: 1rem; }
  .topbar { font-size: .78rem; }
  .section { padding: 3.5rem 0; }
  .hero { padding: 2.8rem 0 3.5rem; }
  .cards, .why__list, .steps { grid-template-columns: 1fr; }
  .card--wide { grid-column: auto; }
  .picker, .shop, .form { padding: 1.3rem; }
  .picker__grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav { position: absolute; top: var(--header-h); left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: .5rem 1.25rem 1.2rem; background: var(--bg); border-bottom: 1px solid var(--line); }
  .nav.is-open { display: flex; }
  .nav a:not(.btn) { padding: .9rem 0; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 1rem; text-align: center; }
}

/* ---------- Reducción de movimiento ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}