/* ============================================================
   PreObra — Sistema visual técnico-industrial
   Marca producto: PreObra (naranja ladrillo + antracita)
   Marca paraguas: OdooMás / InflexiumLabs
   ============================================================ */

:root {
  /* Brand */
  --po-orange: #E8521B;
  --po-orange-deep: #B83A0F;
  --po-orange-soft: #FBE6DA;
  --po-ink: #1A1F26;          /* antracita casi negro */
  --po-ink-2: #262C36;
  --po-ink-3: #3B4250;
  --po-steel: #6B7280;
  --po-line: #D7DCE3;
  --po-paper: #F5F2EC;        /* papel manila */
  --po-paper-2: #EDE8DE;
  --po-blueprint: #0E2A3C;    /* azul plano técnico */
  --po-blueprint-line: rgba(255,255,255,0.10);
  --po-success: #1F8A4C;
  --po-warn: #C77B0B;

  /* Type */
  --font-display: "Archivo", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Geometry */
  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 10px;
  --max: 1240px;

  /* Shadow */
  --shadow-card: 0 1px 0 rgba(0,0,0,0.04), 0 12px 32px -16px rgba(26,31,38,0.18);
  --shadow-cta: 0 8px 24px -10px rgba(232,82,27,0.55);
}

@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@500;600;700;800;900&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap");

/* Reset ------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--po-ink);
  background: var(--po-paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }

/* Type ------------------------------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--po-orange);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--po-orange);
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: clamp(40px, 6vw, 72px); }
h2 { font-size: clamp(30px, 4vw, 48px); }
h3 { font-size: clamp(20px, 2vw, 24px); letter-spacing: -0.01em; }
p { text-wrap: pretty; }

/* Layout ----------------------------------------------------- */
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }
@media (max-width: 720px){ section { padding: 64px 0; } }

/* Buttons ---------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.005em;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--po-orange); color: white; box-shadow: var(--shadow-cta); }
.btn-primary:hover { background: var(--po-orange-deep); transform: translateY(-1px); }
.btn-ghost { color: var(--po-ink); border: 1px solid var(--po-line); background: white; }
.btn-ghost:hover { border-color: var(--po-ink); }
.btn-wa { background: #1FAD53; color: white; }
.btn-wa:hover { background: #178A41; }
.btn-dark { background: var(--po-ink); color: white; }
.btn-dark:hover { background: var(--po-ink-2); }

/* Header ----------------------------------------------------- */
.po-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(245,242,236,0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--po-line);
}
.po-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max);
  margin: 0 auto;
  gap: 24px;
}
.po-brand { display: flex; align-items: center; gap: 12px; }
.po-brand img { height: 34px; width: auto; }
.po-brand-text { display: flex; flex-direction: column; line-height: 1; }
.po-brand-text strong { font-family: var(--font-display); font-weight: 800; font-size: 18px; letter-spacing: -0.02em; }
.po-brand-text span { font-family: var(--font-mono); font-size: 10px; color: var(--po-steel); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 3px; }

.po-nav { display: flex; align-items: center; gap: 4px; }
.po-nav a {
  font-size: 14px; padding: 8px 12px; border-radius: var(--radius-sm);
  color: var(--po-ink-3); font-weight: 500;
}
.po-nav a:hover { color: var(--po-ink); background: rgba(0,0,0,0.04); }
.po-nav a.active { color: var(--po-orange); }
.po-nav-cta { margin-left: 12px; }
@media (max-width: 920px){
  .po-nav a:not(.po-nav-cta){ display: none; }
}

/* Footer ----------------------------------------------------- */
.po-footer {
  background: var(--po-ink);
  color: #BCC3CD;
  padding: 64px 0 32px;
}
.po-footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
}
@media (max-width: 820px){ .po-footer-inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px){ .po-footer-inner { grid-template-columns: 1fr; } }
.po-footer h5 {
  font-family: var(--font-mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.16em; color: white; margin: 0 0 16px;
}
.po-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-size: 14px; }
.po-footer a:hover { color: white; }
.po-footer-bottom {
  max-width: var(--max);
  margin: 48px auto 0;
  padding: 24px 24px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #6B7689;
  letter-spacing: 0.05em;
}
.po-partners {
  display: flex; align-items: center; gap: 28px; flex-wrap: wrap;
  filter: brightness(0) invert(1);
  opacity: 0.55;
}
.po-partners img { height: 26px; width: auto; }

/* Blueprint pattern ----------------------------------------- */
.blueprint {
  background-color: var(--po-blueprint);
  background-image:
    linear-gradient(var(--po-blueprint-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--po-blueprint-line) 1px, transparent 1px);
  background-size: 32px 32px;
  color: white;
  position: relative;
}
.blueprint::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center top, transparent 30%, rgba(0,0,0,0.35) 90%);
  pointer-events: none;
}
.blueprint > * { position: relative; z-index: 1; }

/* Paper grid pattern --------------------------------------- */
.paper-grid {
  background-color: var(--po-paper);
  background-image:
    linear-gradient(rgba(26,31,38,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,31,38,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Tag chips ------------------------------------------------- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--po-orange-soft);
  color: var(--po-orange-deep);
  letter-spacing: 0.04em;
  font-weight: 600;
  text-transform: uppercase;
}
.chip-dark { background: rgba(255,255,255,0.08); color: white; }
.chip-line { background: transparent; border: 1px solid var(--po-line); color: var(--po-ink-3); }

/* Stat ------------------------------------------------------ */
.stat-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(48px, 7vw, 96px);
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--po-orange);
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--po-ink-3);
}

/* Feature card --------------------------------------------- */
.feature {
  background: white;
  border: 1px solid var(--po-line);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  gap: 14px;
  position: relative;
  overflow: hidden;
}
.feature .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--po-orange);
  letter-spacing: 0.1em;
  font-weight: 600;
}
.feature h3 { font-size: 22px; }
.feature p { color: var(--po-ink-3); font-size: 15px; line-height: 1.55; margin: 0; }

/* Hero generic --------------------------------------------- */
.sector-hero {
  position: relative;
  padding: 100px 0 80px;
  border-bottom: 1px solid var(--po-line);
  overflow: hidden;
}
.sector-hero .hero-grid {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center;
}
@media (max-width: 920px){ .sector-hero .hero-grid { grid-template-columns: 1fr; } }
.sector-hero h1 { margin: 16px 0 20px; }
.sector-hero .lead {
  font-size: 18px; color: var(--po-ink-3); max-width: 56ch; line-height: 1.55;
}
.sector-hero .cta-row { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.sector-meta {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-top: 48px; padding-top: 32px; border-top: 1px dashed var(--po-line);
}
.sector-meta div .stat-num { font-size: 44px; }

/* Bullet rows ---------------------------------------------- */
.bullets { display: grid; gap: 16px; margin: 24px 0 0; padding: 0; list-style: none; }
.bullets li {
  display: grid; grid-template-columns: 28px 1fr; gap: 14px; align-items: start;
  padding: 14px 0; border-top: 1px solid var(--po-line);
  font-size: 15px; color: var(--po-ink-2);
}
.bullets li:last-child { border-bottom: 1px solid var(--po-line); }
.bullets li .b-num {
  font-family: var(--font-mono);
  color: var(--po-orange); font-size: 12px; font-weight: 700;
  margin-top: 2px;
}
.bullets li b { font-weight: 700; color: var(--po-ink); }

/* Mockup window -------------------------------------------- */
.mockup {
  background: white;
  border-radius: 10px;
  border: 1px solid var(--po-line);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.mockup-bar {
  background: var(--po-ink);
  color: #C8CDD5;
  padding: 10px 14px;
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em;
}
.mockup-bar .dots { display: flex; gap: 6px; margin-right: 6px; }
.mockup-bar .dot { width: 9px; height: 9px; border-radius: 50%; background: #444; }
.mockup-bar .dot:nth-child(1){ background: #FF5F57; }
.mockup-bar .dot:nth-child(2){ background: #FEBC2E; }
.mockup-bar .dot:nth-child(3){ background: #28C840; }

/* Form ----------------------------------------------------- */
.demo-form {
  background: white;
  border: 1px solid var(--po-line);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: grid;
  gap: 14px;
  box-shadow: var(--shadow-card);
}
.demo-form label {
  display: grid; gap: 6px;
  font-size: 12px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--po-ink-3);
  font-weight: 600;
}
.demo-form input, .demo-form textarea, .demo-form select {
  border: 1px solid var(--po-line);
  background: var(--po-paper);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--po-ink);
  transition: border-color .15s ease, background .15s ease;
}
.demo-form input:focus, .demo-form textarea:focus, .demo-form select:focus {
  outline: none; border-color: var(--po-orange); background: white;
}
.demo-form textarea { resize: vertical; min-height: 96px; }
.demo-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 520px){ .demo-form .form-row { grid-template-columns: 1fr; } }
.demo-form .submit-row { margin-top: 8px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.demo-form .form-status {
  font-family: var(--font-mono); font-size: 12px; padding: 10px 12px; border-radius: var(--radius);
  display: none;
}
.demo-form .form-status.ok { display: block; background: #E5F4EC; color: var(--po-success); border: 1px solid #B7DCC6; }
.demo-form .form-status.err { display: block; background: #FBE3E3; color: #B22; border: 1px solid #F0B6B6; }

/* Section header ------------------------------------------- */
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 { margin: 12px 0 16px; }
.section-head p { font-size: 17px; color: var(--po-ink-3); margin: 0; }

/* Index hub specific --------------------------------------- */
.hub-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
@media (max-width: 920px){ .hub-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .hub-grid { grid-template-columns: 1fr; } }

.hub-card {
  display: block;
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--po-line);
  background: white;
  padding: 28px;
  min-height: 260px;
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.hub-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); border-color: var(--po-ink); }
.hub-card .hub-num {
  font-family: var(--font-mono); font-size: 11px; color: var(--po-orange); letter-spacing: 0.14em;
}
.hub-card h3 { font-size: 28px; margin: 12px 0 8px; }
.hub-card p { color: var(--po-ink-3); font-size: 14.5px; margin: 0; }
.hub-card .hub-arrow {
  position: absolute; right: 24px; bottom: 24px;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--po-paper); display: flex; align-items: center; justify-content: center;
  transition: background .15s ease, color .15s ease;
}
.hub-card:hover .hub-arrow { background: var(--po-orange); color: white; }