/* ══════════════════════════════════════════════════════════
   MECHAI + SAGECOMMS — LANDING
   Paleta heredada de thelio-ai.com.ar. Acento "Industria" = naranja.
   Mobile-first, oscura, baja densidad, visual-céntrica.
   ══════════════════════════════════════════════════════════ */

:root {
  --bg:           #0a0a0f;
  --surface:      #12121a;
  --card:         #1a1a26;
  --border:       #2a2a3a;
  --text:         #e4e4ed;
  --muted:        #9090a8;
  --accent:       #f39c12;
  --accent-rgb:   243, 156, 18;
  --accent-dim:   #c47e0a;
  --grad-1:       #6c5ce7;
  --grad-2:       #00cec9;
  --danger:       #e74c3c;
  --ok:           #00b894;

  --radius:       16px;
  --radius-sm:    10px;
  --radius-xs:    6px;
  --transition:   .3s cubic-bezier(.4,0,.2,1);
  --max-w:        1200px;

  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

/* Compensar header fijo (~72px) al saltar a un ancla */
:target,
[id] { scroll-margin-top: 88px; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; height: auto; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }
code {
  font-family: var(--font-mono);
  font-size: .88em;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255,255,255,.06);
  color: var(--accent);
}

::selection { background: rgba(var(--accent-rgb), .35); color: #fff; }

/* ─── Utilidades ─── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .container { padding: 0 32px; }
}

.section {
  padding: 72px 0;
  position: relative;
}
@media (min-width: 768px) {
  .section { padding: 100px 0; }
}

.section-title {
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.18;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 720px;
  margin-bottom: 48px;
  line-height: 1.6;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 20px;
  background: rgba(var(--accent-rgb), .12);
  border: 1px solid rgba(var(--accent-rgb), .35);
  color: var(--accent);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  transition: var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a0f;
}
.btn-primary:hover { background: #ffae20; transform: translateY(-1px); }
.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn svg { width: 16px; height: 16px; }

/* ═══════════════ HEADER ═══════════════ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10,10,15,.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.header.scrolled { border-bottom-color: var(--border); }
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
@media (min-width: 768px) {
  .header-inner { padding: 0 32px; height: 72px; }
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -.01em;
  font-size: 1.05rem;
}
.brand-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #ffae20);
  display: grid; place-items: center;
  color: #0a0a0f;
  font-weight: 900;
  font-size: .9rem;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  font-size: .78rem;
  font-weight: 600;
  color: var(--muted);
  transition: var(--transition);
}
.lang-toggle:hover { border-color: var(--accent); color: var(--accent); }
.header-cta {
  padding: 8px 16px;
  border-radius: var(--radius-xs);
  background: var(--accent);
  color: #0a0a0f;
  font-weight: 600;
  font-size: .82rem;
  transition: var(--transition);
}
.header-cta:hover { background: #ffae20; }

/* ═══════════════ HERO ═══════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  padding: 120px 0 60px;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}
.hero-video-wrap {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.hero-poster {
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: brightness(.4) saturate(1.05);
}
.hero-video-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 30%, rgba(var(--accent-rgb), .22), transparent 60%),
    linear-gradient(180deg, rgba(10,10,15,.55) 0%, rgba(10,10,15,.9) 100%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  max-width: 880px;
  z-index: 1;
}
.hero h1 {
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.03em;
  margin-bottom: 24px;
}
.hero h1 .accent { color: var(--accent); }
.hero h1 .hero-h1-sub {
  display: block;
  margin-top: 14px;
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  font-weight: 600;
  color: var(--muted);
  letter-spacing: -.01em;
  line-height: 1.3;
}
.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--muted);
  max-width: 720px;
  margin-bottom: 32px;
  line-height: 1.55;
}
.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-trust {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.02);
}
.hero-trust::before {
  content: "";
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
}

/* ═══════════════ PROBLEMA ═══════════════ */
.problem-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .problem-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
}
.problem-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}
.problem-card:hover {
  border-color: rgba(var(--accent-rgb), .4);
  transform: translateY(-3px);
}
.problem-card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(var(--accent-rgb), .12);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}
.problem-card-icon svg { width: 24px; height: 24px; }
.problem-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.problem-card p {
  font-size: .95rem;
  color: var(--muted);
  line-height: 1.55;
}

/* ═══════════════ SOLUCIÓN ═══════════════ */
.solution {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.pilares-figure {
  margin: 0 auto 72px;
  max-width: 1100px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  box-shadow:
    0 0 0 1px rgba(var(--accent-rgb), .25),
    0 30px 80px -20px rgba(var(--accent-rgb), .22),
    0 20px 60px -20px rgba(0, 0, 0, .6);
}
.pilares-figure img {
  width: 100%; height: auto; display: block;
}

.feature-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 72px;
}
@media (min-width: 900px) {
  .feature-block {
    grid-template-columns: 1.05fr 1fr;
    gap: 56px;
  }
  .feature-block--reverse .feature-block-text { order: 2; }
  .feature-block--reverse .feature-block-visual { order: 1; }
}
.feature-block-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 12px;
  padding: 4px 10px;
  border: 1px solid rgba(var(--accent-rgb), .4);
  border-radius: 999px;
  background: rgba(var(--accent-rgb), .08);
}
.feature-block-text h3 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.2;
  margin-bottom: 16px;
}
.feature-block-text p {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.6;
  margin-bottom: 20px;
}
.feature-block-text p strong { color: var(--text); }
.feature-list {
  list-style: none;
  display: grid;
  gap: 10px;
}
.feature-list li {
  display: flex;
  gap: 10px;
  font-size: .95rem;
  color: var(--text);
  line-height: 1.5;
}
.feature-list li::before {
  content: "→";
  color: var(--accent);
  font-weight: 900;
  flex-shrink: 0;
}

.feature-block-visual { min-width: 0; }
.feature-visual-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.feature-visual-card::before {
  content: "";
  position: absolute;
  inset: -40px;
  background: radial-gradient(ellipse at top, rgba(var(--accent-rgb), .18) 0%, transparent 60%);
  pointer-events: none;
}
.feature-visual-icon {
  position: relative;
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(var(--accent-rgb), .15);
  color: var(--accent);
  display: grid; place-items: center;
  margin: 0 auto 20px;
}
.feature-visual-icon svg { width: 26px; height: 26px; }
.feature-visual-stat {
  position: relative;
  font-size: clamp(3rem, 8vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent), #ffae20);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 14px;
}
.feature-visual-stat .unit {
  font-size: .35em;
  font-weight: 700;
  color: var(--muted);
  -webkit-text-fill-color: var(--muted);
  margin-left: 4px;
  letter-spacing: 0;
}
.feature-visual-caption {
  position: relative;
  font-size: .92rem;
  color: var(--muted);
  line-height: 1.5;
}

.vision-video-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #000;
  box-shadow:
    0 0 0 1px rgba(var(--accent-rgb), .25),
    0 30px 80px -20px rgba(var(--accent-rgb), .35),
    0 20px 60px -20px rgba(0,0,0,.6);
}
.vision-video-wrap video {
  width: 100%; height: 100%;
  object-fit: contain;
  background: #000;
}

.solution-cta {
  text-align: center;
  margin-top: 24px;
}

/* ═══════════════ ON-PREMISE / SEGURIDAD ═══════════════ */
.onprem-benefits {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
  margin-top: 8px;
}
@media (min-width: 768px) {
  .onprem-benefits { grid-template-columns: repeat(3, 1fr); gap: 24px; }
}
.onprem-benefit {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}
.onprem-benefit:hover {
  border-color: rgba(var(--accent-rgb), .4);
  transform: translateY(-3px);
}
.onprem-benefit-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(var(--accent-rgb), .12);
  color: var(--accent);
  display: grid; place-items: center;
  margin-bottom: 20px;
}
.onprem-benefit-icon svg { width: 24px; height: 24px; }
.onprem-benefit h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.onprem-benefit p {
  font-size: .94rem;
  color: var(--muted);
  line-height: 1.55;
}

/* ═══════════════ SPECS TÉCNICAS ═══════════════ */
.specs {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.specs-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  -webkit-overflow-scrolling: touch;
}
.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .92rem;
  min-width: 640px;
}
.specs-table th,
.specs-table td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.specs-table thead th {
  background: rgba(var(--accent-rgb), .08);
  color: var(--accent);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(var(--accent-rgb), .3);
}
.specs-table tbody tr:last-child th,
.specs-table tbody tr:last-child td { border-bottom: none; }
.specs-table tbody tr {
  transition: background var(--transition);
}
.specs-table tbody tr:hover {
  background: rgba(var(--accent-rgb), .04);
}
.specs-table tbody th[scope="row"] {
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
}
.specs-table tbody td {
  color: var(--muted);
}
.specs-table tbody td:first-of-type code {
  font-size: .85em;
  color: var(--accent);
}

/* ═══════════════ IMPLEMENTACIÓN ═══════════════ */
.impl-steps {
  list-style: none;
  display: grid;
  gap: 20px;
  counter-reset: impl;
  max-width: 880px;
  margin: 0 auto;
}
.impl-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: var(--transition);
}
.impl-step:hover {
  border-color: rgba(var(--accent-rgb), .4);
}
.impl-step-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--accent);
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(var(--accent-rgb), .12);
  border: 1px solid rgba(var(--accent-rgb), .35);
  display: grid; place-items: center;
  flex-shrink: 0;
}
.impl-step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.impl-step p {
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.55;
}

/* ═══════════════ CONTACTO ═══════════════ */
.contact {
  position: relative;
}
.contact-grid {
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 900px) {
  .contact-grid { grid-template-columns: 1fr 1fr; gap: 64px; }
  .contact-grid.contact-grid--simple { grid-template-columns: 1fr; max-width: 720px; margin: 0 auto; }
}
.contact-info h2 { margin-bottom: 16px; }
.contact-info > p {
  color: var(--muted);
  margin-bottom: 24px;
  font-size: 1.05rem;
}
.contact-bullets {
  list-style: none;
  display: grid;
  gap: 14px;
  font-size: .94rem;
  color: var(--text);
}
.contact-bullets li {
  display: flex;
  gap: 10px;
}
.contact-bullets li::before {
  content: "→";
  color: var(--accent);
  font-weight: 900;
  flex-shrink: 0;
}

/* Bloque de contacto directo (WhatsApp / Email / Tel) */
.contact-direct {
  margin-top: 28px;
  display: grid;
  gap: 10px;
}
.contact-direct-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--card);
  transition: var(--transition);
}
.contact-direct-row:hover {
  border-color: rgba(var(--accent-rgb), .5);
  transform: translateX(2px);
}
.contact-direct-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(var(--accent-rgb), .14);
  color: var(--accent);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.contact-direct-icon svg { width: 20px; height: 20px; }
.contact-direct-row > span:last-child {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.25;
}
.contact-direct-label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-direct-row strong {
  font-size: .98rem;
  font-weight: 600;
  color: var(--text);
}
.contact-direct-hours {
  margin-top: 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  color: var(--muted);
}
.contact-direct-hours svg { width: 14px; height: 14px; }

/* ═══════════════ FOOTER ═══════════════ */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  background: var(--bg);
}
.footer-inner {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
  align-items: center;
  text-align: center;
}
@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr auto 1fr;
    text-align: left;
  }
  .footer-inner > :nth-child(2) { justify-self: center; }
  .footer-inner > :nth-child(3) { text-align: right; }
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  margin-bottom: 8px;
}
.footer-legal {
  font-size: .82rem;
  color: var(--muted);
}
.footer-links {
  display: inline-flex;
  gap: 20px;
  font-size: .85rem;
  color: var(--muted);
}
.footer-links a { transition: var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-social {
  display: inline-flex;
  gap: 12px;
  justify-content: center;
}
@media (min-width: 768px) {
  .footer-social { justify-content: flex-end; }
}
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: grid; place-items: center;
  color: var(--muted);
  transition: var(--transition);
}
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }
.footer-social svg { width: 16px; height: 16px; }

/* ═══════════════ REVEAL ═══════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s cubic-bezier(.4,0,.2,1), transform .8s cubic-bezier(.4,0,.2,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════ REDUCED MOTION ═══════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ═══════════════ NO-JS FALLBACK ═══════════════ */
.no-js .reveal { opacity: 1; transform: none; }

/* ═══════════════ SKIP LINK ═══════════════ */
.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--accent);
  color: #0a0a0f;
  font-weight: 700;
  border-radius: var(--radius-xs);
  transition: top .2s;
}
.skip-link:focus { top: 12px; }