/* ============================================================
   Veltis Group — landing · v2 "intermedia"
   Identidad navy/teal de siempre, con escala y aire de producto
   moderno: hero grande con degradado, tarjetas redondeadas,
   stepper horizontal y tema claro/oscuro con toggle.
   ============================================================ */

@font-face { font-family: 'Archivo'; src: url('assets/fonts/Archivo-600.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Archivo'; src: url('assets/fonts/Archivo-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Public Sans'; src: url('assets/fonts/PublicSans-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Public Sans'; src: url('assets/fonts/PublicSans-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Public Sans'; src: url('assets/fonts/PublicSans-600.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('assets/fonts/IBMPlexMono-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }

/* ---------- tokens: tema claro ---------- */
:root {
  --navy: #1F3A5F;
  --navy-deep: #16293F;
  --teal: #2C7A7B;
  --teal-strong: #235F60;
  --teal-bright: #5FB3B4;
  --ink: #22303E;
  --ink-soft: #55677A;
  --paper: #F7F9FA;
  --card: #FFFFFF;
  --mist: #D9E2E9;
  --grid-line: rgba(31, 58, 95, 0.055);
  --head-accent: #1F3A5F;              /* títulos de tarjeta */
  --tile-bg: rgba(44, 122, 123, 0.10); /* azulejo de ícono */
  --tile-ink: #235F60;
  --grad-a: #1F3A5F;
  --grad-b: #2C7A7B;
  --grad-c: #3E8E8F;
  --shadow-card: 0 1px 2px rgba(22, 41, 63, 0.05), 0 12px 32px -18px rgba(22, 41, 63, 0.25);
  --shadow-lift: 0 2px 4px rgba(22, 41, 63, 0.06), 0 22px 44px -18px rgba(22, 41, 63, 0.32);
  --glow: rgba(44, 122, 123, 0.14);
  /* sobre navy */
  --on-navy: #E8EFF5;
  --on-navy-soft: #A9BCCE;

  --ff-display: 'Archivo', 'Segoe UI', system-ui, sans-serif;
  --ff-body: 'Public Sans', 'Segoe UI', system-ui, sans-serif;
  --ff-mono: 'IBM Plex Mono', ui-monospace, 'Consolas', monospace;

  --w: 1120px;
  --radius: 14px;
  --radius-btn: 10px;

  color-scheme: light;
}

/* ---------- tokens: tema oscuro (sistema, salvo fijado en claro) ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --navy: #1B3355;
    --navy-deep: #101F31;
    --teal: #4FA5A6;
    --teal-strong: #5FB3B4;
    --ink: #D9E4EC;
    --ink-soft: #93A6B7;
    --paper: #0E161F;
    --card: #16212C;
    --mist: #26333F;
    --grid-line: rgba(137, 176, 214, 0.05);
    --head-accent: #D9E4EC;
    --tile-bg: rgba(95, 179, 180, 0.14);
    --tile-ink: #5FB3B4;
    --grad-a: #5FB3B4;
    --grad-b: #7CC5C6;
    --grad-c: #A8DCDD;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 14px 34px -18px rgba(0, 0, 0, 0.55);
    --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.35), 0 24px 48px -18px rgba(0, 0, 0, 0.65);
    --glow: rgba(79, 165, 166, 0.10);
    color-scheme: dark;
  }
}

/* ---------- tokens: tema oscuro fijado con el toggle ---------- */
:root[data-theme="dark"] {
  --navy: #1B3355;
  --navy-deep: #101F31;
  --teal: #4FA5A6;
  --teal-strong: #5FB3B4;
  --ink: #D9E4EC;
  --ink-soft: #93A6B7;
  --paper: #0E161F;
  --card: #16212C;
  --mist: #26333F;
  --grid-line: rgba(137, 176, 214, 0.05);
  --head-accent: #D9E4EC;
  --tile-bg: rgba(95, 179, 180, 0.14);
  --tile-ink: #5FB3B4;
  --grad-a: #5FB3B4;
  --grad-b: #7CC5C6;
  --grad-c: #A8DCDD;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 14px 34px -18px rgba(0, 0, 0, 0.55);
  --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.35), 0 24px 48px -18px rgba(0, 0, 0, 0.65);
  --glow: rgba(79, 165, 166, 0.10);
  color-scheme: dark;
}

/* ---------- base ---------- */
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--ff-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--w); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--ff-display); line-height: 1.1; text-wrap: balance; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4rem); font-weight: 700; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 700; letter-spacing: -0.015em; }
h3 { font-size: 1.16rem; font-weight: 600; }
p  { max-width: 62ch; }

a { color: var(--teal-strong); text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 4px; }

.eyebrow {
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-strong);
  margin-bottom: 14px;
}
.eyebrow-light { color: var(--teal-bright); }

/* degradado del titular */
.grad {
  background: linear-gradient(92deg, var(--grad-a), var(--grad-b) 55%, var(--grad-c));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--mist);
}
.topbar-in { display: flex; align-items: center; gap: 24px; padding-top: 14px; padding-bottom: 14px; }
.wordmark {
  font-family: var(--ff-display); font-weight: 700; font-size: 1.05rem;
  letter-spacing: 0.06em; color: var(--navy); white-space: nowrap;
}
:root[data-theme="dark"] .wordmark { color: var(--ink); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .wordmark { color: var(--ink); } }
.wordmark span { color: var(--teal-strong); }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--ink-soft); font-weight: 500; font-size: 0.95rem; }
.nav a:hover { color: var(--teal-strong); }

.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 999px;
  border: 1px solid var(--mist); background: transparent; color: var(--ink-soft);
  cursor: pointer; transition: color .15s, border-color .15s;
}
.theme-toggle:hover { color: var(--teal-strong); border-color: var(--teal); }
.ticon-sun { display: none; }
:root[data-eff="dark"] .ticon-sun { display: inline; }
:root[data-eff="dark"] .ticon-moon { display: none; }

.btn {
  display: inline-block; font-weight: 600; font-size: 0.95rem;
  padding: 10px 20px; border-radius: var(--radius-btn);
  border: 1px solid transparent; transition: background .15s, color .15s, border-color .15s, box-shadow .15s;
}
.btn-solid { background: var(--teal-strong); color: #fff; box-shadow: 0 6px 16px -8px color-mix(in srgb, var(--teal-strong) 55%, transparent); }
.btn-solid:hover { background: var(--teal); }
:root[data-theme="dark"] .btn-solid { color: #0E161F; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn-solid { color: #0E161F; } }
.btn-ghost { border-color: var(--mist); color: var(--ink); background: var(--card); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal-strong); }
.btn-lg { padding: 13px 26px; font-size: 1rem; }

/* ---------- hero ---------- */
.hero {
  border-bottom: 1px solid var(--mist);
  background:
    radial-gradient(720px 460px at 82% 8%, var(--glow), transparent 70%),
    linear-gradient(color-mix(in srgb, var(--paper) 55%, transparent), var(--paper) 82%),
    repeating-linear-gradient(0deg, var(--grid-line) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 32px);
}
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr);
  gap: 64px; align-items: center;
  padding-top: 96px; padding-bottom: 108px;
}
.hero-copy .lede { margin-top: 24px; font-size: 1.16rem; color: var(--ink-soft); }
.cta-row { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }

/* insignia tipo pastilla */
.badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--ff-mono); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--teal-strong);
  border: 1px solid var(--mist); border-radius: 999px;
  background: var(--card);
  padding: 7px 16px; margin-bottom: 26px;
}
.badge-dot { width: 7px; height: 7px; border-radius: 999px; background: var(--teal-bright); flex-shrink: 0; }

/* cajetín de plano técnico — versión vitrina */
.titleblock {
  font-family: var(--ff-mono); font-size: 0.78rem;
  border: 1px solid color-mix(in srgb, var(--navy) 28%, var(--mist));
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  color: var(--ink);
  box-shadow: var(--shadow-card), 0 0 60px -18px var(--glow);
}
.tb-row {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 10px 16px; border-top: 1px solid var(--mist);
  font-variant-numeric: tabular-nums;
}
.tb-row.tb-head {
  border-top: 0;
  background: linear-gradient(120deg, var(--navy), var(--teal-strong) 130%);
  color: var(--on-navy);
  font-weight: 500; letter-spacing: 0.08em;
}
:root[data-theme="dark"] .tb-row.tb-head { color: #EAF3F6; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .tb-row.tb-head { color: #EAF3F6; } }
.tb-k { color: var(--ink-soft); }

/* ---------- secciones ---------- */
.section { padding: 96px 0; }
.section-lede { color: var(--ink-soft); margin-top: 14px; font-size: 1.05rem; }

.section-navy { background: var(--navy-deep); color: var(--on-navy); }
.section-navy h2, .section-navy h3 { color: #fff; }
.section-navy p { color: var(--on-navy-soft); }

.section-tint { background: color-mix(in srgb, var(--teal) 6%, var(--paper)); border-block: 1px solid var(--mist); }

/* papel cuadriculado para el método */
.section-grid {
  border-block: 1px solid var(--mist);
  background:
    linear-gradient(color-mix(in srgb, var(--paper) 40%, transparent), color-mix(in srgb, var(--paper) 40%, transparent)),
    repeating-linear-gradient(0deg, var(--grid-line) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 32px);
}

/* ---------- tarjetas base ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
@media (prefers-reduced-motion: no-preference) {
  .card { transition: transform .2s ease, box-shadow .2s ease; }
  .card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
}

/* azulejo de ícono */
.icon-tile {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--tile-bg); color: var(--tile-ink);
  margin-bottom: 20px;
}

/* servicios */
.svc-grid { margin-top: 44px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.svc { padding: 30px 28px; }
.svc h3 { color: var(--head-accent); margin-bottom: 10px; }
.svc p { color: var(--ink-soft); font-size: 0.97rem; }

/* método: stepper horizontal */
.stepper {
  list-style: none; padding: 0; margin: 52px 0 0;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 0 24px;
}
.mstep-top { display: flex; align-items: center; margin-bottom: 18px; }
.mstep-dot {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 999px; flex-shrink: 0;
  border: 2px solid var(--teal-strong); color: var(--teal-strong);
  background: var(--card);
  font-family: var(--ff-mono); font-size: 1.05rem; font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.mstep-top::after {
  content: ''; flex: 1; height: 2px; margin-left: 12px;
  background: color-mix(in srgb, var(--teal) 30%, var(--mist));
}
.mstep:last-child .mstep-top::after { display: none; }
.mstep h3 { margin-bottom: 8px; font-size: 1.05rem; }
.mstep p { color: var(--ink-soft); font-size: 0.92rem; }

/* socios */
.partners { margin-top: 44px; display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.partner { padding: 32px 30px; }
.partner-head { border-bottom: 1px solid var(--mist); padding-bottom: 14px; margin-bottom: 16px; }
.partner h3 { color: var(--head-accent); font-size: 1.25rem; }
.partner-role { font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal-strong); margin-top: 6px; }
.partner p { color: var(--ink-soft); font-size: 0.97rem; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 18px 0 0; }
.chips li {
  font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.04em;
  padding: 5px 11px; border: 1px solid var(--mist); border-radius: 999px; color: var(--ink-soft);
  background: color-mix(in srgb, var(--paper) 55%, var(--card));
}

/* diferenciales */
.diff-grid { margin-top: 44px; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.diff { padding: 26px 26px; }
.diff h3 { color: var(--head-accent); margin-bottom: 8px; }
.diff p { color: var(--ink-soft); font-size: 0.97rem; }

/* contacto */
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
.contact-card {
  border: 1px solid color-mix(in srgb, var(--on-navy) 22%, transparent);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
  padding: 32px 30px;
}
.contact-mail {
  display: block; font-family: var(--ff-display); font-weight: 600;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem); color: var(--teal-bright); margin: 6px 0 16px;
  word-break: break-all;
}
.contact-mail:hover { color: #fff; }
.contact-meta { font-size: 0.92rem; }

/* footer */
.footer { background: var(--navy-deep); border-top: 1px solid color-mix(in srgb, var(--on-navy) 12%, transparent); }
.footer-in {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-top: 22px; padding-bottom: 26px;
  font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.06em;
  color: var(--on-navy-soft);
}

/* ---------- revelado (mejora progresiva) ----------
   Por defecto TODO es visible: sin JS, en crawlers o en contextos sin viewport,
   la página se lee completa. La clase html.anim (que el script agrega solo si
   hay viewport real, IntersectionObserver y sin prefers-reduced-motion) activa
   la animación de entrada. */
html.anim .reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
html.anim .reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .stepper { grid-template-columns: 1fr 1fr; gap: 28px 24px; }
  .mstep-top::after { display: none; }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; padding-top: 60px; padding-bottom: 68px; }
  .titleblock { max-width: 460px; }
  .svc-grid { grid-template-columns: 1fr; }
  .partners { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 68px 0; }
}
@media (max-width: 600px) {
  .stepper { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .nav { display: none; }
  .theme-toggle { margin-left: auto; }
  body { font-size: 16px; }
}