@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ============================================================
   Tokens de marca ESAG Tech
   ============================================================ */
:root {
  /* Graphite ramp (grises fríos) */
  --graphite: #0E1217;
  --g-900: #151A21;
  --g-800: #1E242D;
  --g-700: #2A323D;
  --g-600: #3C4655;
  --g-500: #5A6575;
  --g-400: #6B7585;
  --g-300: #97A1B0;
  --g-200: #C4CCD6;
  --g-150: #D9DFE7;
  --g-100: #E2E7EE;
  --g-50:  #F2F5F9;
  --g-25:  #F8FAFC;

  /* Electric Blue (único color primario/interactivo) */
  --blue:        #2E6BF0;
  --blue-hover:  #2356CC;
  --blue-active: #1C46AE;
  --blue-soft:   #F2F6FF;

  /* Cyan (acento, con moderación) */
  --cyan: #13B8C4;

  /* Gradiente firma */
  --grad: linear-gradient(105deg, #2E6BF0 0%, #13B8C4 100%);

  /* Superficies */
  --bg:        #F8FAFC;
  --ink:       #0E1217;
  --text:      #1E242D;
  --text-soft: #5A6575;
  --hairline:  #E2E7EE;

  /* Radios */
  --r-control: 9px;
  --r-card:    14px;

  /* Sombras (teñidas de grafito) */
  --sh-1: 0 4px 12px rgba(14,18,23,.08);
  --sh-2: 0 10px 28px rgba(14,18,23,.12);

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 120ms;
  --t-mid:  200ms;
  --t-slow: 280ms;

  /* Layout */
  --container: 1200px;
  --header-h: 100px;

  /* Fuentes */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

/* ============================================================
   Reset y base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--blue); text-decoration: none; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0;
}

p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.ink { background: var(--ink); color: var(--g-100); }

/* ============================================================
   Eyebrow (mono, mayúsculas, prefijo //)
   ============================================================ */
.eyebrow {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 16px;
}
.eyebrow--onink { color: var(--cyan); }

/* Gradiente firma en texto */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ============================================================
   Botones (radios de control, sin píldora, sin bounce)
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 14px 22px;
  border-radius: var(--r-control);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
}
.btn-sm { padding: 10px 16px; font-size: 14px; }

.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-hover); }
.btn-primary:active { background: var(--blue-active); transform: translateY(1px); }

.btn-ghost {
  background: transparent;
  color: var(--blue);
  border-color: var(--hairline);
}
.btn-ghost:hover { border-color: var(--blue); background: var(--blue-soft); }
.btn-ghost:active { transform: translateY(1px); }

.btn-ghost--onink {
  color: #fff;
  border-color: rgba(255,255,255,.24);
}
.btn-ghost--onink:hover { border-color: var(--cyan); background: rgba(255,255,255,.06); }

.btn:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(46,107,240,.22);
}

/* ============================================================
   Header sticky
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background-color var(--t-mid) var(--ease),
              box-shadow var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header[data-state="scrolled"] {
  background: rgba(248,250,252,.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--hairline);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: inline-flex; align-items: center; }
.brand-logo { height: 68px; width: auto; }
/* Swap logo dark/claro según estado del header */
.brand-logo--light { display: none; }
.site-header[data-state="scrolled"] .brand-logo--dark { display: none; }
.site-header[data-state="scrolled"] .brand-logo--light { display: block; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,.82);
  transition: color var(--t-fast) var(--ease);
  position: relative;
  padding: 4px 0;
}
.nav-link:hover { color: #fff; }
.nav-link.is-active { color: #fff; }
.site-header[data-state="scrolled"] .nav-link { color: var(--text-soft); }
.site-header[data-state="scrolled"] .nav-link:hover,
.site-header[data-state="scrolled"] .nav-link.is-active { color: var(--graphite); }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: var(--blue);
  border-radius: 2px;
}
.nav-cta { color: #fff; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  color: #fff;
  cursor: pointer;
  padding: 6px;
}
.site-header[data-state="scrolled"] .nav-toggle { color: var(--graphite); }
.nav-toggle i, .mobile-menu-close i { width: 26px; height: 26px; }

/* ============================================================
   Menú móvil (overlay grafito)
   ============================================================ */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--graphite);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease);
}
.mobile-menu.is-open { opacity: 1; }
.mobile-menu-close {
  position: absolute;
  top: 22px; right: 22px;
  background: transparent;
  border: 0;
  color: #fff;
  cursor: pointer;
}
.mobile-nav { display: flex; flex-direction: column; align-items: center; gap: 28px; }
.mobile-link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 26px;
  color: #fff;
}
.mobile-cta { margin-top: 12px; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1200px 600px at 70% 30%, rgba(46,107,240,.10), transparent 60%),
    radial-gradient(900px 500px at 20% 80%, rgba(19,184,196,.07), transparent 60%),
    linear-gradient(180deg, rgba(14,18,23,.3) 0%, rgba(14,18,23,.55) 100%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 900px; padding-block: 60px; }
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  color: #fff;
  margin: 0 0 22px;
}
.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--g-200);
  max-width: 680px;
  margin: 0 0 26px;
}
.hero-terminal {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--cyan);
  margin: 0 0 34px;
}
.term-prompt { color: var(--g-300); }
.term-rotate { color: var(--cyan); }
.term-cursor {
  color: var(--cyan);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.scroll-indicator {
  position: absolute;
  left: 50%; bottom: 26px;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--g-300);
}
.scroll-line {
  width: 1px; height: 34px;
  background: linear-gradient(180deg, transparent, var(--g-400));
}
.scroll-indicator i { width: 18px; height: 18px; animation: nudge 1.8s var(--ease) infinite; }
@keyframes nudge { 0%, 100% { transform: translateY(0); opacity: .6; } 50% { transform: translateY(4px); opacity: 1; } }

/* ============================================================
   Métricas
   ============================================================ */
.metrics { padding: 56px 0; border-top: 1px solid var(--g-800); }
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.metric { text-align: center; }
.metric-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1;
  color: #fff;
  margin-bottom: 10px;
}
.metric-label {
  font-size: 14px;
  color: var(--g-300);
  line-height: 1.4;
  display: block;
}

/* ============================================================
   Secciones
   ============================================================ */
.section { padding: 100px 0; }
.section--light { background: var(--bg); }
.section--ink { background: var(--ink); color: var(--g-100); }

.section-head { max-width: 760px; margin-bottom: 52px; }
.section-title {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  margin: 0 0 18px;
}
.section--ink .section-title { color: #fff; }
.section-lead {
  font-size: 1.1rem;
  color: var(--text-soft);
}
.section--ink .section-lead { color: var(--g-300); }

/* Circuito decorativo */
.circuit-line { width: 100%; height: 40px; margin: 8px 0 48px; overflow: visible; }
.circuit-path {
  fill: none;
  stroke: var(--blue);
  stroke-width: 2;
  stroke-dasharray: 2600;
  stroke-dashoffset: 2600;
  opacity: .5;
}
.circuit-line.is-visible .circuit-path {
  animation: draw 2.2s var(--ease) forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
.circuit-dot { fill: var(--cyan); opacity: 0; }
.circuit-line.is-visible .circuit-dot { animation: dotIn var(--t-slow) var(--ease) forwards; animation-delay: 1.8s; }
@keyframes dotIn { to { opacity: 1; } }

/* ============================================================
   Cards
   ============================================================ */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cards-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  padding: 32px 28px;
  transition: transform var(--t-mid) var(--ease),
              box-shadow var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--sh-2); border-color: var(--g-150); }

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  border-radius: var(--r-control);
  background: var(--blue-soft);
  color: var(--blue);
  margin-bottom: 20px;
}
.card-icon i { width: 24px; height: 24px; }

.card-title { font-size: 1.25rem; margin: 0 0 12px; }
.card-text { color: var(--text-soft); font-size: .98rem; }

/* Cards oscuras (servicios) */
.card--dark {
  background: var(--g-900);
  border-color: var(--g-700);
}
.card--dark:hover {
  border-color: var(--cyan);
  box-shadow: 0 10px 34px rgba(19,184,196,.12);
}
.card--dark .card-title { color: #fff; }
.card--dark .card-text { color: var(--g-300); }
.card-icon--dark { background: rgba(19,184,196,.12); color: var(--cyan); }

/* Valores */
.values {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
}
.value-chip {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
  padding: 8px 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-control);
}

/* ============================================================
   Proyectos
   ============================================================ */
.cards-projects {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.project-card {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  padding: 28px 24px;
  transition: transform var(--t-mid) var(--ease),
              box-shadow var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease);
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-2);
  border-color: var(--blue);
}
.project-tag {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--blue);
  margin: 16px 0 8px;
}
.project-card .card-title { font-size: 1.12rem; }
.project-card .card-text { font-size: .92rem; }

.projects-cta {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.projects-cta-text {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--graphite);
  max-width: 640px;
}

/* ============================================================
   Contacto
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-form-wrap {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  padding: 36px;
  box-shadow: var(--sh-1);
}
.field { margin-bottom: 20px; }
.field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.field .req { color: var(--blue); margin-left: 2px; }
.field .opt { color: var(--g-400); font-weight: 400; }
.field input,
.field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text);
  padding: 12px 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-control);
  background: var(--g-25);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.field input:focus,
.field textarea:focus { border-color: var(--blue); background: #fff; }
.field textarea { resize: vertical; }

/* Honeypot oculto */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
}

.form-submit { margin-top: 8px; }
.form-status {
  margin-top: 16px;
  font-size: 14px;
  padding: 12px 14px;
  border-radius: var(--r-control);
}
.form-status.is-ok { background: var(--blue-soft); color: var(--blue-active); border: 1px solid rgba(46,107,240,.2); }
.form-status.is-err { background: #FEF2F2; color: #B91C1C; border: 1px solid #FECACA; }

.contact-list { list-style: none; margin: 0 0 28px; padding: 0; }
.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
}
.contact-ico {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--r-control);
  background: var(--blue-soft);
  color: var(--blue);
}
.contact-ico i { width: 20px; height: 20px; }
.contact-k {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--g-400);
  margin-bottom: 2px;
}
.contact-list a { color: var(--text); font-weight: 500; }
.contact-list a:hover { color: var(--blue); }

.social { display: flex; gap: 12px; }
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-control);
  color: var(--text-soft);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.social-link:hover { border-color: var(--blue); color: var(--blue); }
.social-link i { width: 20px; height: 20px; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer { padding: 72px 0 32px; }
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--g-800);
}
.footer-logo { height: 40px; width: auto; margin-bottom: 16px; }
.footer-tagline {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--g-400);
}
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-h {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--g-300);
  margin-bottom: 4px;
}
.footer-col a, .footer-col span { color: var(--g-300); font-size: 14px; }
.footer-col a:hover { color: #fff; }
.footer-legal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 24px;
}
.footer-legal p { font-family: var(--font-mono); font-size: 12px; color: var(--g-500); }
.footer-made { color: var(--cyan) !important; }

/* ============================================================
   Volver arriba
   ============================================================ */
.to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 90;
  width: 46px; height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--graphite);
  color: #fff;
  border: 1px solid var(--g-700);
  border-radius: var(--r-control);
  cursor: pointer;
  box-shadow: var(--sh-1);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease), background var(--t-fast) var(--ease);
}
.to-top.is-visible { opacity: 1; transform: translateY(0); }
.to-top:hover { background: var(--g-800); }
.to-top i { width: 20px; height: 20px; }

/* ============================================================
   Scroll reveal
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1200px) {
  .cards-projects { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  :root { --header-h: 84px; }
  .brand-logo { height: 52px; }
  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .cards-3, .cards-4 { grid-template-columns: 1fr 1fr; }
  .metrics-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .section { padding: 72px 0; }
}
@media (max-width: 600px) {
  :root { --header-h: 72px; }
  .brand-logo { height: 46px; }
  .container { padding-inline: 18px; }
  .cards-3, .cards-4, .cards-projects { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .projects-cta { flex-direction: column; align-items: flex-start; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { flex: 1 1 auto; }
}

/* ============================================================
   prefers-reduced-motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .term-cursor { animation: none; }
  .scroll-indicator i { animation: none; }
}