/* ============================================================
   AHG Ingeniero — Portal corporativo (web-ahg)
   Tema oscuro + azul Promigas #0066cc, tipografía DM Sans.
   Coherente con los visores (db_promigas / SPEC / JSA).
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* Paleta (misma del visor) */
  --bg-dark:        #0a0f1a;
  --bg-panel:       #111827;
  --bg-card:        #131c2e;
  --bg-card-hover:  #18233a;
  --border:         #233150;
  --border-soft:    #1a2740;
  --text-primary:   #f1f5f9;
  --text-secondary: #97a6bd;
  --text-muted:     #64748b;
  --accent:         #0066cc;       /* Azul Promigas */
  --accent-hi:      #2a86e6;
  --accent-glow:    rgba(0,102,204,0.30);
  --green:          #2e9e5e;
  --yellow:         #eab308;

  /* Sistema */
  --maxw: 1120px;
  --pad: clamp(20px, 5vw, 40px);
  --radius: 18px;
  --radius-sm: 10px;
  --ease: cubic-bezier(.16, 1, .3, 1);
  --nav-h: 66px;
}

/* ---------- Base ---------- */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { background: var(--accent); color: #fff; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent-hi);
}

/* Accesibilidad */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--accent); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }
:focus-visible { outline: 2px solid var(--accent-hi); outline-offset: 3px; border-radius: 4px; }

/* ============================================================
   BOTONES
   ============================================================ */
.btn {
  --b-pad: 13px 26px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: var(--b-pad);
  border-radius: 999px;
  font-family: inherit; font-size: .98rem; font-weight: 600;
  line-height: 1; cursor: pointer; border: 1px solid transparent;
  transition: transform .35s var(--ease), background .25s ease,
              border-color .25s ease, box-shadow .35s var(--ease), color .25s ease;
  white-space: nowrap;
}
.btn--sm { --b-pad: 9px 18px; font-size: .9rem; }
.btn--lg { --b-pad: 16px 34px; font-size: 1.05rem; }

.btn--primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 8px 24px -10px var(--accent-glow);
}
.btn--primary:hover {
  background: var(--accent-hi);
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -12px var(--accent-glow);
}
.btn--ghost {
  background: rgba(255,255,255,.02);
  border-color: var(--border);
  color: var(--text-primary);
}
.btn--ghost:hover {
  border-color: var(--accent-hi);
  background: rgba(0,102,204,.10);
  transform: translateY(-2px);
}

/* ============================================================
   NAV (vidrio esmerilado)
   ============================================================ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background .4s ease, border-color .4s ease, backdrop-filter .4s ease;
}
.nav.scrolled {
  background: rgba(10,15,26,.72);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom-color: var(--border-soft);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav__logo { height: 34px; width: auto; }
.nav__links { display: flex; align-items: center; gap: clamp(14px, 3vw, 30px); }
.nav__links > a:not(.btn) {
  font-size: .96rem; font-weight: 500; color: var(--text-secondary);
  position: relative; transition: color .2s ease;
}
.nav__links > a:not(.btn):hover { color: var(--text-primary); }
.nav__links > a:not(.btn)::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -6px; height: 2px;
  background: var(--accent-hi); border-radius: 2px; transition: right .3s var(--ease);
}
.nav__links > a:not(.btn):hover::after { right: 0; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
  text-align: center;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero__glow {
  position: absolute; border-radius: 50%;
  filter: blur(90px); opacity: .55;
}
.hero__glow--1 {
  width: 60vw; height: 60vw; max-width: 760px; max-height: 760px;
  top: -18%; left: 50%; transform: translateX(-55%);
  background: radial-gradient(circle, rgba(0,102,204,.55), transparent 65%);
  animation: drift1 22s ease-in-out infinite alternate;
}
.hero__glow--2 {
  width: 50vw; height: 50vw; max-width: 620px; max-height: 620px;
  bottom: -22%; right: -8%;
  background: radial-gradient(circle, rgba(42,134,230,.30), transparent 65%);
  animation: drift2 26s ease-in-out infinite alternate;
}
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148,163,184,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.06) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 38%, #000 30%, transparent 78%);
          mask-image: radial-gradient(ellipse 70% 60% at 50% 38%, #000 30%, transparent 78%);
}
@keyframes drift1 { to { transform: translateX(-45%) translateY(40px) scale(1.1); } }
@keyframes drift2 { to { transform: translateY(-40px) scale(1.12); } }

.hero__inner { position: relative; z-index: 1; }
.hero__title {
  font-size: clamp(2.3rem, 6.2vw, 4.6rem);
  font-weight: 700; line-height: 1.05; letter-spacing: -.03em;
  margin: 18px auto 0;
  max-width: 16ch;
  background: linear-gradient(180deg, #ffffff 30%, #b9c6da 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero__sub {
  margin: 24px auto 0; max-width: 56ch;
  font-size: clamp(1.02rem, 1.6vw, 1.22rem);
  color: var(--text-secondary);
}
.hero__cta { margin-top: 38px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.hero__scroll {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%);
  z-index: 1; width: 30px; height: 48px; border-radius: 16px;
  border: 1.5px solid var(--border); display: grid; place-items: center;
  transition: border-color .25s ease;
}
.hero__scroll:hover { border-color: var(--accent-hi); }
.hero__scroll-chevron {
  width: 6px; height: 6px; border-right: 2px solid var(--text-secondary);
  border-bottom: 2px solid var(--text-secondary); transform: rotate(45deg) translateY(-2px);
  animation: bob 1.8s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: rotate(45deg) translateY(-3px); opacity:.4; } 50% { transform: rotate(45deg) translateY(3px); opacity:1; } }

/* ============================================================
   SECCIONES
   ============================================================ */
.section { padding-block: clamp(70px, 12vh, 150px); position: relative; }
.section[id] { scroll-margin-top: calc(var(--nav-h) + 12px); }
.section--contact { border-top: 1px solid var(--border-soft); }

.section__head { text-align: center; max-width: 720px; margin: 0 auto clamp(40px, 6vh, 72px); }
.section__title {
  font-size: clamp(1.9rem, 3.6vw, 2.9rem); font-weight: 700;
  letter-spacing: -.02em; margin-top: 14px;
}
.section__lead { margin-top: 16px; color: var(--text-secondary); font-size: 1.08rem; }

/* ---------- Cliente ---------- */
.client__head {
  display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap;
  padding-bottom: 18px; margin-bottom: 28px;
  border-bottom: 1px solid var(--border-soft);
  position: relative;
}
.client__head::before {
  content: ""; position: absolute; left: 0; bottom: -1px; width: 56px; height: 2px;
  background: var(--accent);
}
.client__name { font-size: 1.5rem; font-weight: 700; letter-spacing: -.01em; }
.client__desc { color: var(--text-muted); font-size: 1rem; }
.client__more { text-align: center; margin-top: 40px; color: var(--text-muted); font-size: .95rem; }

/* ---------- Tarjetas ---------- */
.cards {
  display: grid; gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.card {
  display: flex; flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .45s var(--ease), border-color .3s ease, box-shadow .45s var(--ease);
  will-change: transform;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 26px 50px -24px rgba(0,0,0,.7), 0 0 0 1px var(--accent-glow);
}
.card__media {
  position: relative; aspect-ratio: 16 / 10;
  display: grid; place-items: center;
  color: rgba(241,245,249,.85);
  overflow: hidden;
}
/* Fondos distintos por tarjeta — sustituibles por una <img> a futuro */
.card__media--a { background: linear-gradient(140deg, #0d2748, #0a1730); }
.card__media--b { background: linear-gradient(140deg, #112a4d, #0c1c36); }
.card__media--c { background: linear-gradient(140deg, #0a2036, #0b1424); }
.card__media::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 70% 18%, rgba(0,102,204,.22), transparent 60%);
}
.card__glyph {
  width: 30%; max-width: 84px; height: auto; position: relative; z-index: 1;
  transition: transform .5s var(--ease);
}
.card:hover .card__glyph { transform: scale(1.08); }

.card__body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.card__title { font-size: 1.32rem; font-weight: 700; letter-spacing: -.01em; margin: 12px 0 8px; }
.card__desc { color: var(--text-secondary); font-size: .98rem; flex: 1; }
.card__cta {
  margin-top: 18px; display: inline-flex; align-items: center; gap: 8px;
  color: var(--accent-hi); font-weight: 600; font-size: .96rem;
}
.card__arrow { transition: transform .3s var(--ease); }
.card:hover .card__arrow { transform: translateX(5px); }

/* ---------- Badge de estado ---------- */
.badge {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: 7px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .68rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  padding: 5px 11px; border-radius: 999px; border: 1px solid transparent;
}
.badge__dot { width: 7px; height: 7px; border-radius: 50%; }
.badge--activo { color: #7ee2a8; background: rgba(46,158,94,.12); border-color: rgba(46,158,94,.3); }
.badge--activo .badge__dot { background: var(--green); box-shadow: 0 0 0 3px rgba(46,158,94,.18); }
.badge--plan { color: #f5d680; background: rgba(234,179,8,.10); border-color: rgba(234,179,8,.28); }
.badge--plan .badge__dot { background: var(--yellow); }

/* ============================================================
   CONTACTO
   ============================================================ */
.contact { text-align: center; max-width: 640px; }
.contact__title { font-size: clamp(1.9rem, 3.6vw, 2.9rem); font-weight: 700; letter-spacing: -.02em; margin-top: 14px; }
.contact__lead { margin: 16px auto 32px; color: var(--text-secondary); font-size: 1.08rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { border-top: 1px solid var(--border-soft); padding-block: 40px; }
.footer__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 22px; flex-wrap: wrap;
}
.footer__logo { height: 30px; width: auto; opacity: .9; }
.footer__links { display: flex; gap: 22px; }
.footer__links a { color: var(--text-secondary); font-size: .92rem; transition: color .2s ease; }
.footer__links a:hover { color: var(--text-primary); }
.footer__copy { color: var(--text-muted); font-size: .85rem; width: 100%; text-align: center; padding-top: 6px; }

/* ============================================================
   REVEAL (animación de aparición al hacer scroll)
   ============================================================ */
/* Solo se ocultan si hay JS (.js lo añade un script inline en <head>).
   Sin JS, el contenido permanece visible. */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .8s var(--ease); transition-delay: var(--d, 0ms); }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 640px) {
  .nav__links { gap: 16px; }
  .nav__links > a:not(.btn) { display: none; }   /* en móvil queda solo el CTA */
  .hero__title { letter-spacing: -.02em; }
  .footer__inner { flex-direction: column; text-align: center; }
}

/* ============================================================
   MOVIMIENTO REDUCIDO
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal, .js .reveal { opacity: 1; transform: none; }
}