/* =========================================================================
   HIX Adventure × Smart-2U + Verum-X — Sitio de propuesta / diagnóstico
   Base visual reutilizada de la presentación entregada (paleta, tono).
   Pensado para crecer hacia la futura instancia de Smart-2U para HIX.
   ========================================================================= */

:root{
  color-scheme: light;

  /* ---- Marca ---- */
  --accent: #e8590c;         /* naranja seguridad / aventura */
  --accent-ink: #ffffff;
  --gold: #c98a1f;           /* dorado cuerda — ajustado para contraste en claro */
  --gold-dark: #f4b942;      /* dorado cuerda — sobre fondos oscuros */

  /* ---- Superficies modo claro ---- */
  --bg: #ffffff;
  --bg-alt: #f5f6f7;
  --card: #ebedee;
  --card-strong: #e2e5e7;
  --surface-inverse: #162327;   /* tarjetas oscuras dentro de página clara */
  --surface-inverse-2: #223339;
  --border: #dadee0;
  --nav-bg: rgba(255,255,255,.82);

  /* ---- Texto modo claro ---- */
  --text: #132025;
  --text-soft: #33454c;
  --text-muted: #5b6770;
  --text-on-inverse: #eef3f4;
  --text-on-inverse-muted: #b7c6cb;

  --shadow: 0 1px 2px rgba(19,32,37,.04), 0 8px 24px rgba(19,32,37,.06);
  --shadow-lg: 0 12px 32px rgba(19,32,37,.12);
  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1160px;
}

[data-theme="dark"]{
  color-scheme: dark;
  --bg: #0e1618;
  --bg-alt: #121c1f;
  --card: #1a262a;
  --card-strong: #202f34;
  --surface-inverse: #0a1012;
  --surface-inverse-2: #182428;
  --border: #263539;
  --nav-bg: rgba(14,22,24,.78);

  --text: #eef3f4;
  --text-soft: #cdd9dc;
  --text-muted: #93a4a9;
  --text-on-inverse: #eef3f4;
  --text-on-inverse-muted: #93a4a9;

  --gold: #f4b942;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 28px rgba(0,0,0,.35);
  --shadow-lg: 0 16px 40px rgba(0,0,0,.45);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: 84px; }
body{
  margin:0;
  font-family: "Segoe UI", Calibri, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background-color .25s ease, color .25s ease;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: var(--accent); text-decoration: none; }
a:hover{ text-decoration: underline; }
h1,h2,h3,h4{ line-height:1.2; margin:0 0 .5em; font-weight:800; letter-spacing:-.01em; }
p{ line-height:1.65; color: var(--text-soft); margin:0 0 1em; }
ul{ margin:0; padding:0; }
.container{ max-width: var(--maxw); margin:0 auto; padding: 0 24px; }
section{ padding: 88px 0; border-bottom: 1px solid var(--border); }
section:last-of-type{ border-bottom:none; }
.section-alt{ background: var(--bg-alt); }

/* ---- Kicker / eyebrow ---- */
.kicker{
  display:inline-flex; align-items:center; gap:8px;
  font-size:12.5px; font-weight:800; letter-spacing:.14em; text-transform:uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.kicker::before{ content:""; width:18px; height:2px; background: var(--accent); display:inline-block; border-radius:2px; }

.eyebrow-row{ display:flex; align-items:flex-end; justify-content:space-between; gap:24px; flex-wrap:wrap; margin-bottom:40px; }
.eyebrow-row h2{ font-size: clamp(28px,3.4vw,38px); }
.section-lede{ max-width: 720px; color: var(--text-muted); font-size:15.5px; }

/* ---- Nav ---- */
.nav{
  position: sticky; top:0; z-index:50;
  background: var(--nav-bg); backdrop-filter: blur(10px) saturate(1.2);
  border-bottom: 1px solid var(--border);
}
.nav-inner{ display:flex; align-items:center; justify-content:space-between; gap:20px; padding: 12px 24px; max-width: var(--maxw); margin:0 auto; }
.brand{ display:flex; align-items:center; gap:10px; font-weight:800; font-size:16px; white-space:nowrap; }
.brand .dot{ width:10px; height:10px; border-radius:50%; background:var(--accent); box-shadow:0 0 0 4px rgba(232,89,12,.15); }
.brand .we{ color: var(--text); }
.brand .build{ color: var(--accent); }
.nav-links{ display:flex; gap: 4px; list-style:none; flex-wrap:wrap; }
.nav-links a{
  color: var(--text-muted); font-size:13.5px; font-weight:600; padding:8px 12px; border-radius:999px;
  transition: all .15s ease;
}
.nav-links a:hover{ background: var(--card); color: var(--text); text-decoration:none; }
.nav-links a.active{ background: var(--accent); color:#fff; }
.nav-actions{ display:flex; align-items:center; gap:10px; }
.theme-toggle{
  width:40px; height:40px; border-radius:50%; border:1px solid var(--border); background: var(--card);
  color: var(--text); display:flex; align-items:center; justify-content:center; cursor:pointer;
  transition: transform .2s ease, background .2s ease;
}
.theme-toggle:hover{ transform: rotate(14deg) scale(1.05); }
.theme-toggle svg{ width:18px; height:18px; }
.theme-toggle .i-sun{ display:none; }
[data-theme="dark"] .theme-toggle .i-moon{ display:none; }
[data-theme="dark"] .theme-toggle .i-sun{ display:block; }
.nav-toggle{ display:none; }

.btn{
  display:inline-flex; align-items:center; gap:8px; font-weight:700; font-size:13.5px;
  padding:11px 20px; border-radius:999px; border:1px solid transparent; cursor:pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-primary{ background: var(--accent); color:#fff; }
.btn-primary:hover{ box-shadow: 0 8px 20px rgba(232,89,12,.35); transform: translateY(-1px); text-decoration:none; }
.btn-ghost{ background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover{ background: var(--card); text-decoration:none; }

/* ---- Hero ---- */
.hero{
  position: relative; overflow:hidden; padding: 120px 0 90px;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(232,89,12,.14), transparent 60%),
    radial-gradient(700px 420px at -10% 110%, rgba(244,185,66,.10), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.hero-grid{ display:grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items:center; }
.hero-tag{
  display:inline-flex; align-items:center; gap:8px; font-size:12.5px; font-weight:800;
  letter-spacing:.1em; text-transform:uppercase; color: var(--gold);
  background: color-mix(in srgb, var(--gold) 14%, transparent); padding:7px 14px; border-radius:999px; margin-bottom:22px;
}
.hero h1{ font-size: clamp(34px,5vw,54px); margin-bottom:18px; }
.hero h1 span{ color: var(--accent); }
.hero-desc{ font-size:17px; max-width:560px; color:var(--text-muted); margin-bottom: 30px; }
.hero-actions{ display:flex; gap:12px; flex-wrap:wrap; margin-bottom:34px; }
.hero-meta{ display:flex; gap:28px; flex-wrap:wrap; }
.hero-meta div{ font-size:12px; color:var(--text-muted); }
.hero-meta strong{ display:block; font-size:20px; color:var(--text); font-weight:800; }

.hero-card{
  background: var(--surface-inverse); color: var(--text-on-inverse); border-radius: 20px;
  padding: 30px; box-shadow: var(--shadow-lg); position:relative;
}
.hero-card h3{ font-size:14px; text-transform:uppercase; letter-spacing:.08em; color: var(--gold-dark); margin-bottom:18px; }
.hero-stats{ display:grid; grid-template-columns: 1fr 1fr; gap:16px; }
.hero-stat b{ display:block; font-size:26px; color:#fff; font-weight:800; }
.hero-stat span{ font-size:11.5px; color: var(--text-on-inverse-muted); }
.hero-card .badge-live{
  position:absolute; top:-12px; right:24px; background: var(--accent); color:#fff; font-size:11px; font-weight:800;
  padding:6px 12px; border-radius:999px; box-shadow:0 6px 16px rgba(232,89,12,.4); letter-spacing:.04em;
}

/* ---- Cards genéricas ---- */
.grid{ display:grid; gap:20px; }
.grid-3{ grid-template-columns: repeat(3,1fr); }
.grid-2{ grid-template-columns: repeat(2,1fr); }
.grid-4{ grid-template-columns: repeat(4,1fr); }

.card{
  background: var(--card); border-radius: var(--radius); padding: 26px;
  border: 1px solid var(--border);
}
.card-inverse{ background: var(--surface-inverse); color: var(--text-on-inverse); border:none; }
.card-inverse p, .card-inverse .muted{ color: var(--text-on-inverse-muted); }
.card:hover{ box-shadow: var(--shadow); }

.icon-circle{
  width:52px; height:52px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background: var(--surface-inverse); color:#fff; margin-bottom:16px; flex-shrink:0;
}
.icon-circle.on-dark{ background: var(--accent); }
.icon-circle svg{ width:24px; height:24px; }
.card h4{ font-size:17px; margin-bottom:8px; }
.card p{ font-size:13.8px; margin-bottom:0; }

/* ---- Modalidades DIY/DWY/DFY ---- */
.mode-card{ position:relative; text-align:center; padding: 34px 24px; }
.mode-card.reco{ background: var(--surface-inverse); color:#fff; transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.mode-card.reco p, .mode-card.reco .muted{ color: var(--text-on-inverse-muted); }
.mode-tag{ position:absolute; top:16px; left:50%; transform:translateX(-50%); background:var(--accent); color:#fff; font-size:10.5px; font-weight:800; letter-spacing:.06em; padding:5px 12px; border-radius:999px; white-space:nowrap; }
.mode-card .icon-circle{ margin: 22px auto 14px; }
.mode-name{ font-size:26px; font-weight:800; }
.mode-sub{ font-size:12.5px; font-style:italic; color:var(--accent); margin-bottom:14px; display:block; }
.mode-card.reco .mode-sub{ color: var(--gold-dark); }
.mode-note{ font-size:11.5px; font-weight:700; color: var(--text-muted); margin-top:14px; }
.mode-card.reco .mode-note{ color: var(--gold-dark); }

/* ---- Tablas ---- */
.table-wrap{ overflow-x:auto; border-radius: var(--radius); border:1px solid var(--border); }
table{ width:100%; border-collapse:collapse; font-size:13.8px; background: var(--bg); }
thead th{ background: var(--surface-inverse); color:#fff; text-align:left; padding:13px 16px; font-size:12.5px; letter-spacing:.02em; white-space:nowrap; }
tbody td{ padding:13px 16px; border-top:1px solid var(--border); color: var(--text-soft); vertical-align:top; }
tbody tr:nth-child(even){ background: var(--bg-alt); }
tbody tr:hover{ background: var(--card); }
td a{ font-weight:600; }
.tag{ display:inline-block; font-size:11px; font-weight:800; padding:3px 10px; border-radius:999px; background: color-mix(in srgb, var(--accent) 15%, transparent); color: var(--accent); }

/* ---- Stat grid ---- */
.stat-box{ background: var(--surface-inverse); color:#fff; border-radius: var(--radius); padding:24px; }
.stat-box b{ display:block; font-size:32px; color: var(--accent); font-weight:800; }
.stat-box span{ font-size:12.5px; color: var(--text-on-inverse-muted); }

/* ---- Acordeón (dolores / soluciones) ---- */
.accordion{ display:flex; flex-direction:column; gap:12px; }
.acc-item{
  border:1px solid var(--border); border-radius: var(--radius); background: var(--bg); overflow:hidden;
}
.acc-head{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding: 18px 22px; cursor:pointer; user-select:none; background: var(--card);
}
.acc-head:hover{ background: var(--card-strong); }
.acc-head-left{ display:flex; align-items:center; gap:14px; }
.acc-num{ font-size:11px; font-weight:800; color:var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); padding:4px 9px; border-radius:6px; }
.acc-title{ font-weight:700; font-size:15px; }
.acc-chevron{ transition: transform .25s ease; color: var(--text-muted); flex-shrink:0; }
.acc-item.open .acc-chevron{ transform: rotate(180deg); }
.acc-body{ max-height:0; overflow:hidden; transition: max-height .3s ease; }
.acc-item.open .acc-body{ max-height: 900px; }
.acc-body-inner{ padding: 6px 22px 22px; display:grid; gap:14px; }
.acc-row{ display:grid; grid-template-columns: 150px 1fr; gap:16px; }
.acc-row .lbl{ font-size:11px; font-weight:800; letter-spacing:.05em; text-transform:uppercase; color: var(--accent); padding-top:2px; }
.acc-row p{ font-size:13.8px; margin:0; }
@media (max-width: 700px){ .acc-row{ grid-template-columns: 1fr; } }

/* ---- Timeline hoja de ruta ---- */
.timeline{ display:grid; grid-template-columns: repeat(4,1fr); gap:16px; position:relative; }
.tl-step{ background: var(--surface-inverse); color:#fff; border-radius: var(--radius); padding:22px 20px; position:relative; }
.tl-step .tl-num{ font-size:11px; font-weight:800; letter-spacing:.06em; color: var(--accent); text-transform:uppercase; }
.tl-step .icon-circle{ background: var(--surface-inverse-2); margin: 14px 0 12px; }
.tl-step h4{ font-size:15px; color:#fff; }
.tl-step p{ font-size:12px; color: var(--text-on-inverse-muted); margin-bottom:10px; }
.tl-step .tl-when{ font-size:11.5px; font-weight:800; color: var(--gold-dark); }
.tl-arrow{ display:none; }
@media (min-width: 900px){
  .tl-arrow{ display:flex; align-items:center; justify-content:center; position:absolute; top:50%; right:-24px; transform:translateY(-50%); color: var(--gold-dark); font-size:22px; font-weight:800; z-index:2; }
}

/* ---- Checklist info requerida ---- */
.check-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:16px; }
.check-item{ background: var(--card); border:1px solid var(--border); border-radius: var(--radius); padding:20px; display:flex; gap:14px; align-items:flex-start; }
.check-item input{ margin-top:4px; width:18px; height:18px; accent-color: var(--accent); flex-shrink:0; }
.check-item label strong{ display:block; font-size:14px; margin-bottom:4px; }
.check-item label span{ font-size:12px; color: var(--text-muted); }

/* ---- Fuentes / referencias ---- */
.source-list{ display:grid; grid-template-columns: repeat(2,1fr); gap:10px; }
.source-item{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  background: var(--card); border:1px solid var(--border); border-radius: var(--radius-sm);
  padding:12px 16px; font-size:13px;
}
.source-item .src-name{ font-weight:700; }
.source-item .src-url{ color: var(--text-muted); font-size:11.5px; }
.source-item svg{ width:14px; height:14px; flex-shrink:0; color: var(--accent); }

/* ---- Invitación a formulario (fuentes) ---- */
.invite-box{
  margin-top:28px; background: var(--card); border:1px solid var(--border); border-radius: var(--radius);
  padding:24px 30px; display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap;
}
.invite-box-text{ display:flex; align-items:center; gap:16px; }
.invite-box .icon-circle{ margin:0; }
.invite-box strong{ display:block; font-size:15px; margin-bottom:3px; }
.invite-box span{ font-size:13.5px; color: var(--text-muted); }

/* ---- Diagrama tabs ---- */
.diagram-tabs{ display:flex; gap:8px; margin-bottom:22px; flex-wrap:wrap; }
.diagram-tab{
  padding:10px 18px; border-radius:999px; border:1px solid var(--border); background: var(--card);
  color: var(--text-muted); font-weight:700; font-size:13px; cursor:pointer;
}
.diagram-tab.active{ background: var(--accent); color:#fff; border-color: var(--accent); }
.diagram-pane{ display:none; }
.diagram-pane.active{ display:block; }
.diagram-frame{ background: var(--bg); border:1px solid var(--border); border-radius: var(--radius); padding: 18px; overflow-x:auto; }
.diagram-frame img{ border-radius: 8px; }
.diagram-caption{ font-size:12.5px; color: var(--text-muted); margin-top:12px; }

/* swimlane svg helpers */
.lane-label{ font: 700 13px "Segoe UI", Arial, sans-serif; fill: var(--text); }
.node-box{ fill: var(--bg); stroke: var(--text-soft); stroke-width:1.3; }
.node-text{ font: 600 11.5px "Segoe UI", Arial, sans-serif; fill: var(--text); }
.node-diamond{ fill: #dce9fb; stroke:#2b5fa5; stroke-width:1.3; }
[data-theme="dark"] .node-diamond{ fill:#1c3350; stroke:#5b8dd6; }
.node-accent{ fill: color-mix(in srgb, var(--accent) 12%, var(--bg)); stroke: var(--accent); }
.edge{ stroke: var(--text-soft); stroke-width:1.6; fill:none; marker-end:url(#arrow); }
.edge-yes{ stroke:#2f8f4e; }
.edge-no{ stroke:#c0392b; }
.edge-label{ font: 700 10.5px "Segoe UI", Arial, sans-serif; fill: var(--text-muted); }
.lane-band{ fill: var(--card); }
.lane-band-alt{ fill: var(--bg); }
.lane-divider{ stroke: var(--border); stroke-width:1.5; stroke-dasharray:6 5; }
.lane-sep{ stroke: var(--text-soft); stroke-width:1.5; }
.node-sub{ font: 400 10px "Segoe UI", Arial, sans-serif; fill: var(--text-muted); }

/* ---- CTA final ---- */
.cta{
  background: var(--surface-inverse); color:#fff; border-radius: 24px; padding: 56px; text-align:center;
  position:relative; overflow:hidden;
}
.cta h2{ color:#fff; font-size: clamp(24px,3vw,32px); }
.cta p{ color: var(--text-on-inverse-muted); max-width:560px; margin:0 auto 26px; }
.cta-actions{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

/* ---- Footer ---- */
footer{ padding: 40px 0; }
.foot-grid{ display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap; }
.foot-links{ display:flex; gap:18px; flex-wrap:wrap; }
.foot-links a{ font-size:12.5px; color: var(--text-muted); }
.foot-note{ font-size:11.5px; color: var(--text-muted); }

/* ---- Reveal on scroll ---- */
.reveal{ opacity:0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:none; }

/* ---- Responsive ---- */
@media (max-width: 960px){
  .hero-grid{ grid-template-columns:1fr; }
  .grid-3, .grid-4{ grid-template-columns: repeat(2,1fr); }
  .timeline{ grid-template-columns: 1fr 1fr; }
  .check-grid{ grid-template-columns: repeat(2,1fr); }
  .source-list{ grid-template-columns: 1fr; }
}
@media (max-width: 720px){
  .nav-links{ display:none; }
  .nav-toggle{ display:flex; }
  section{ padding: 64px 0; }
  .grid-2,.grid-3,.grid-4{ grid-template-columns: 1fr; }
  .timeline{ grid-template-columns: 1fr; }
  .check-grid{ grid-template-columns: 1fr; }
  .hero-stats{ grid-template-columns: 1fr 1fr; }
  .acc-row{ grid-template-columns: 1fr; }
}