/* =========================================================
   Vinko Solutions — site.css (rediseño 2026, prototipo 2)
   100% custom, sin frameworks. Breakpoint principal: 720px
   ========================================================= */

:root {
  --bg: #07090c;
  --bg-soft: #0b0f14;
  --surface: #10151c;
  --surface-2: #161c25;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f3f5f9;
  --muted: #a1abbb;
  --dim: #6b7586;
  --accent: #99ccff;
  --accent-strong: #5cb6ff;
  --accent-ink: #04121f;
  --accent-glow: rgba(153, 204, 255, 0.35);

  /* Fondo "estudio" de los renders */
  --studio: #b2b2b2;
  --studio-hi: #b2b2b2;
  --studio-ink: #12151a;
  --studio-muted: #3c424c;

  --radius: 22px;
  --radius-sm: 14px;
  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 68px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Lato", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, video, canvas, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { margin: 0; line-height: 1.08; letter-spacing: -0.022em; font-weight: 700; }
ul { margin: 0; padding: 0; list-style: none; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--accent); color: var(--accent-ink); padding: 10px 14px; border-radius: 10px; font-weight: 700;
}
.skip-link:focus { top: 12px; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.wrap-narrow { max-width: 820px; }

/* ---------- Tipografía ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.76rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; opacity: 0.7; }
.on-studio .eyebrow { color: #1d4d7a; }

.display { font-size: clamp(2.6rem, 6.6vw, 5.6rem); font-weight: 900; letter-spacing: -0.035em; line-height: 0.98; }
.h1 { font-size: clamp(2.3rem, 5vw, 4.2rem); font-weight: 900; letter-spacing: -0.03em; }
.h2 { font-size: clamp(1.9rem, 3.8vw, 3.1rem); font-weight: 900; letter-spacing: -0.028em; }
.h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); }
.lead { font-size: clamp(1.08rem, 1.5vw, 1.3rem); color: var(--muted); line-height: 1.55; max-width: 62ch; }
.h1 + .lead, .h2 + .lead, .display + .lead { margin-top: 18px; }
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.grad-text {
  background: linear-gradient(100deg, #fff 10%, var(--accent) 60%, #d6ecff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.small { font-size: 0.86rem; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- Botones ---------- */
.btn {
  --b: var(--line-strong);
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px; border-radius: 999px;
  border: 1px solid var(--b); background: rgba(255, 255, 255, 0.04);
  font-weight: 700; font-size: 0.98rem; letter-spacing: 0.005em; cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, box-shadow 0.25s, color 0.25s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); background: rgba(255, 255, 255, 0.09); --b: rgba(255, 255, 255, 0.3); }
.btn-primary {
  background: var(--accent); color: var(--accent-ink); --b: transparent;
  box-shadow: 0 10px 30px -10px var(--accent-glow);
}
.btn-primary:hover { background: #b8dcff; box-shadow: 0 14px 38px -10px var(--accent-glow); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 0.9rem; }
.btn-block { width: 100%; }
.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }
.on-studio .btn { --b: rgba(0, 0, 0, 0.18); background: rgba(255, 255, 255, 0.35); color: var(--studio-ink); }
.on-studio .btn:hover { background: rgba(255, 255, 255, 0.6); }
.on-studio .btn-primary { background: var(--studio-ink); color: #fff; box-shadow: none; }
.on-studio .btn-primary:hover { background: #000; }

.link-arrow { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--accent); }
.link-arrow:hover .arrow { transform: translateX(3px); }
.link-arrow .arrow { transition: transform 0.25s var(--ease); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--header-h);
  transition: background 0.35s, border-color 0.35s, backdrop-filter 0.35s;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled, .site-header.is-solid, .site-header.nav-open {
  background: rgba(7, 9, 12, 0.78);
  -webkit-backdrop-filter: saturate(160%) blur(18px); backdrop-filter: saturate(160%) blur(18px);
  border-bottom-color: var(--line);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; font-size: 1.12rem; letter-spacing: -0.01em; }
.brand img { width: 24px; height: auto; }
.brand em { font-style: normal; font-weight: 300; color: var(--muted); margin-left: 4px; }

.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav > a:not(.btn) {
  padding: 8px 12px; border-radius: 999px; font-size: 0.93rem; color: var(--muted);
  transition: color 0.2s, background 0.2s;
}
.site-nav > a:not(.btn):hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.site-nav > a[aria-current="page"] { color: var(--text); }
.site-nav .btn { margin-left: 8px; }

.lang-switch {
  display: inline-flex; margin-left: 10px; padding: 3px; border-radius: 999px;
  border: 1px solid var(--line-strong); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em;
}
.lang-switch a { padding: 5px 10px; border-radius: 999px; color: var(--dim); }
.lang-switch a.is-current { background: rgba(255, 255, 255, 0.1); color: var(--text); }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line-strong); border-radius: 12px;
  background: rgba(255, 255, 255, 0.04); cursor: pointer; position: relative;
}
.nav-toggle span {
  position: absolute; left: 12px; right: 12px; height: 2px; background: var(--text); border-radius: 2px;
  transition: transform 0.3s var(--ease), top 0.3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 16px; }
.nav-toggle span:nth-child(2) { top: 25px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { top: 20px; transform: rotate(-45deg); }

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch; gap: 4px;
    padding: 16px var(--gutter) 28px; background: rgba(7, 9, 12, 0.97);
    -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity 0.25s, transform 0.25s var(--ease), visibility 0.25s;
    max-height: calc(100svh - var(--header-h)); overflow-y: auto;
  }
  .site-nav.is-open { transform: none; opacity: 1; visibility: visible; }
  .site-nav > a:not(.btn) { padding: 14px 6px; font-size: 1.12rem; color: var(--text); border-radius: 0; border-bottom: 1px solid var(--line); }
  .site-nav .btn { margin: 16px 0 0; }
  .lang-switch { align-self: flex-start; margin: 16px 0 0; }
}

/* ---------- Secciones ---------- */
.section { position: relative; padding: clamp(84px, 11vw, 150px) 0; }
.section-tight { padding: clamp(56px, 7vw, 96px) 0; }
.section-head { max-width: 780px; margin-bottom: clamp(36px, 5vw, 64px); }
.section-head.center { margin-left: auto; margin-right: auto; }
.section-head .lead { margin-top: 18px; }
.bg-soft { background: var(--bg-soft); }
.on-studio {
  background: var(--studio);
  color: var(--studio-ink);
}
.on-studio .lead, .on-studio .muted { color: var(--studio-muted); }
.divider { height: 1px; background: var(--line); border: 0; margin: 0; }

.grid { display: grid; gap: clamp(16px, 2vw, 24px); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 980px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 720px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 88px); align-items: center; }
.split.reverse > :first-child { order: 2; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } .split.reverse > :first-child { order: 0; } }

.card {
  position: relative; padding: clamp(22px, 2.6vw, 32px); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--line);
}
.card h3 { margin-bottom: 10px; }
.card p:last-child { margin-bottom: 0; }
.card .muted { font-size: 0.98rem; }

.icon-badge {
  width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 20px;
  background: rgba(153, 204, 255, 0.1); color: var(--accent); border: 1px solid rgba(153, 204, 255, 0.2);
}
.icon-badge svg { width: 22px; height: 22px; }

.check-list li { position: relative; padding-left: 30px; margin: 10px 0; color: var(--muted); }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 0.45em; width: 18px; height: 18px; border-radius: 50%;
  background: rgba(153, 204, 255, 0.14) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2399ccff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/12px no-repeat;
}
.check-list li strong { color: var(--text); }
.x-list li::before {
  background: rgba(255, 120, 120, 0.12) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ff9a9a' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M7 7l10 10M17 7L7 17'/%3E%3C/svg%3E") center/11px no-repeat;
}

.pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px;
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.02em;
  background: rgba(255, 255, 255, 0.07); border: 1px solid var(--line-strong); color: var(--text);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: #5be49b; box-shadow: 0 0 0 4px rgba(91, 228, 155, 0.18); }
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }

/* ---------- Reveal on scroll ---------- */
[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
[data-reveal].is-in { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: 0.08s; }
[data-reveal-delay="2"] { transition-delay: 0.16s; }
[data-reveal-delay="3"] { transition-delay: 0.24s; }
.no-js [data-reveal] { opacity: 1; transform: none; }

/* =========================================================
   HERO (vídeo)
   ========================================================= */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: flex-end;
  overflow: hidden; isolation: isolate; background: #0a0c10;
}
.hero-media { position: absolute; inset: 0; z-index: -2; }
.hero-media video, .hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(7, 9, 12, 0.55) 0%, rgba(7, 9, 12, 0) 26%),
    linear-gradient(0deg, var(--bg) 0%, rgba(7, 9, 12, 0.82) 22%, rgba(7, 9, 12, 0.1) 62%),
    linear-gradient(90deg, rgba(7, 9, 12, 0.72) 0%, rgba(7, 9, 12, 0) 60%);
}
.hero-content { padding-top: calc(var(--header-h) + 40px); padding-bottom: clamp(56px, 9vh, 110px); }
.hero .display { max-width: 12ch; }
.hero .lead { margin-top: 24px; color: #c7cfdb; }
.hero .btn-row { margin-top: 34px; }
.hero-foot {
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin-top: 46px;
  color: var(--dim); font-size: 0.85rem;
}
.scroll-cue { display: inline-flex; align-items: center; gap: 10px; }
.scroll-cue i {
  width: 22px; height: 34px; border: 2px solid var(--line-strong); border-radius: 12px; position: relative;
}
.scroll-cue i::after {
  content: ""; position: absolute; left: 50%; top: 6px; width: 3px; height: 7px; margin-left: -1.5px;
  border-radius: 2px; background: var(--text); animation: cue 1.8s infinite var(--ease);
}
@keyframes cue { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(10px); } }
.video-toggle {
  position: absolute; right: var(--gutter); bottom: clamp(24px, 4vh, 40px); z-index: 2;
  width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line-strong);
  background: rgba(0, 0, 0, 0.35); display: grid; place-items: center; cursor: pointer;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.video-toggle svg { width: 16px; height: 16px; }
.video-toggle .i-play { display: none; }
.video-toggle.is-paused .i-play { display: block; }
.video-toggle.is-paused .i-pause { display: none; }

/* Page hero (páginas interiores) */
.page-hero { position: relative; padding: calc(var(--header-h) + clamp(56px, 9vw, 120px)) 0 clamp(48px, 7vw, 90px); overflow: hidden; }
.page-hero .lead { margin-top: 22px; }
.page-hero .btn-row { margin-top: 30px; }
.page-hero-glow::before {
  content: ""; position: absolute; width: 900px; height: 900px; right: -300px; top: -420px; z-index: -1;
  background: radial-gradient(closest-side, rgba(92, 182, 255, 0.16), transparent 70%);
}
.page-hero-media {
  margin-top: clamp(40px, 6vw, 72px); border-radius: calc(var(--radius) + 6px); overflow: hidden;
  border: 1px solid var(--line); background: var(--studio);
}
.page-hero-media img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; }

/* =========================================================
   PROBLEMA
   ========================================================= */
.statement { font-size: clamp(1.7rem, 3.6vw, 3rem); font-weight: 300; letter-spacing: -0.02em; line-height: 1.18; max-width: 22ch; }
.statement strong { font-weight: 900; color: var(--text); }
.statement .dimmed { color: var(--dim); }
.problem-grid { margin-top: clamp(40px, 6vw, 72px); }
.problem-card .num { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.16em; color: var(--dim); margin-bottom: 18px; display: block; }

/* =========================================================
   SCRUB (secuencia de fotogramas ligada al scroll)
   ========================================================= */
.scrub { position: relative; height: 340vh; background: var(--studio); }
.scrub-sticky {
  position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden;
}
.scrub canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.scrub-head {
  position: absolute; left: 0; right: 0; top: calc(var(--header-h) + clamp(18px, 4vh, 44px)); z-index: 2;
  pointer-events: none;
}
.scrub-head .h2 { max-width: 16ch; }
.scrub-captions {
  position: absolute; left: 0; right: 0; bottom: clamp(26px, 7vh, 72px); z-index: 2; pointer-events: none;
}
.scrub-caption {
  position: absolute; left: var(--gutter); bottom: 0; max-width: 440px;
  opacity: 0; transform: translateY(14px); transition: none; will-change: opacity, transform;
}
.scrub-caption .step {
  display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase;
  color: #1d4d7a; margin-bottom: 8px;
}
.scrub-caption h3 { font-size: clamp(1.3rem, 2.4vw, 1.9rem); font-weight: 900; margin-bottom: 8px; }
.scrub-caption p { color: var(--studio-muted); margin: 0; }
.scrub-progress {
  position: absolute; right: var(--gutter); bottom: clamp(26px, 7vh, 72px); z-index: 2;
  width: 140px; height: 3px; border-radius: 3px; background: rgba(0, 0, 0, 0.12); overflow: hidden;
}
.scrub-progress i { display: block; height: 100%; width: 100%; background: var(--studio-ink); transform-origin: left; transform: scaleX(0); }
.scrub-loading {
  position: absolute; inset: 0; display: grid; place-items: center; font-size: 0.85rem; color: var(--studio-muted);
  transition: opacity 0.4s;
}
.scrub.is-ready .scrub-loading { opacity: 0; pointer-events: none; }
@media (max-width: 720px) {
  .scrub { height: 300vh; }
  .scrub-caption { right: var(--gutter); max-width: none; }
  .scrub-progress { top: calc(var(--header-h) + 16px); bottom: auto; width: 80px; }
}

/* =========================================================
   EXPLORADOR DE PIEZAS
   ========================================================= */
.explorer { padding-top: clamp(40px, 6vw, 80px); }
.explorer-stage {
  position: relative; width: 100%; max-width: 1280px; margin: 0 auto; aspect-ratio: 2 / 1;
}
.explorer-stage canvas, .explorer-stage > img { position: absolute; inset: 0; width: 100%; height: 100%; }
.explorer-tools {
  position: absolute; right: 0; top: 0; display: flex; gap: 8px; z-index: 3;
}
.explorer-tools .btn svg { flex: none; }
.on-studio .part-panel .btn { --b: var(--line-strong); background: rgba(255, 255, 255, 0.05); color: var(--text); }
.on-studio .part-panel .btn:hover { background: rgba(255, 255, 255, 0.1); }
.hotspot {
  position: absolute; z-index: 2; width: 36px; height: 36px; margin: -18px 0 0 -18px; padding: 0;
  border-radius: 50%; border: 2px solid rgba(255, 255, 255, 0.95); cursor: pointer;
  background: rgba(14, 18, 24, 0.88); color: #fff; font-weight: 900; font-size: 0.82rem;
  display: grid; place-items: center; transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, opacity 0.35s;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
}
.hotspot::after {
  content: ""; position: absolute; inset: -8px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, 0.8);
  animation: ping 2.4s infinite var(--ease); pointer-events: none;
}
.hotspot:hover { transform: scale(1.12); }
.hotspot.is-active { background: var(--accent); color: var(--accent-ink); border-color: #fff; transform: scale(1.15); }
.hotspot.is-active::after { border-color: var(--accent-strong); }
.explorer.is-assembled .hotspot { opacity: 0; pointer-events: none; }
@keyframes ping { 0% { transform: scale(0.7); opacity: 0.9; } 80%, 100% { transform: scale(1.5); opacity: 0; } }

.explorer-grid {
  display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(300px, 1fr); gap: clamp(20px, 3vw, 44px); align-items: start;
}
.explorer-main, .explorer-side { min-width: 0; }
.explorer-side { position: sticky; top: calc(var(--header-h) + 20px); }
.part-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.part-btn {
  display: inline-flex; align-items: center; gap: 10px; text-align: left; cursor: pointer;
  padding: 7px 14px 7px 7px; border-radius: 999px; border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.3); color: var(--studio-ink); font-weight: 700; font-size: 0.9rem;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.part-btn .n {
  flex: none; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center;
  background: var(--studio-ink); color: #fff; font-size: 0.74rem;
}
.part-btn .sub { display: none; }
.part-btn:hover { background: rgba(255, 255, 255, 0.55); }
.part-btn[aria-selected="true"] { background: var(--studio-ink); color: #fff; border-color: var(--studio-ink); }
.part-btn[aria-selected="true"] .n { background: var(--accent); color: var(--accent-ink); }

.part-panel {
  background: var(--bg); color: var(--text); border-radius: var(--radius); padding: clamp(24px, 3vw, 38px);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.5);
}
.part-panel[hidden] { display: none; }
.part-panel .tag { font-size: 0.74rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); }
.part-panel h3 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); font-weight: 900; margin: 10px 0 16px; }
.part-panel .part-desc { margin: 0; font-size: 1.06rem; line-height: 1.65; color: #cfd6e2; }
.part-panel-nav { display: flex; justify-content: space-between; gap: 10px; margin-top: 24px; }
.part-panel-nav .btn { min-height: 40px; font-size: 0.88rem; }
.part-panel.anim { animation: panelIn 0.45s var(--ease); }
@keyframes panelIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

@media (max-width: 900px) {
  .explorer-grid { grid-template-columns: minmax(0, 1fr); }
  .explorer-side { position: relative; top: 0; }
  .part-list { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .part-list::-webkit-scrollbar { display: none; }
  .part-btn { flex: none; scroll-snap-align: start; }
  .explorer-tools .btn { min-height: 34px; padding: 0 12px; font-size: 0.8rem; }
  .hotspot { width: 28px; height: 28px; margin: -14px 0 0 -14px; font-size: 0.7rem; border-width: 1.5px; }
  .hotspot::after { inset: -5px; }
}
@media (max-width: 560px) {
  .explorer-stage { width: auto; margin: 0 calc(-1 * var(--gutter)); }
  .hotspot { width: 24px; height: 24px; margin: -12px 0 0 -12px; font-size: 0.66rem; }
  .explorer-tools { right: var(--gutter); top: -6px; }
}

/* =========================================================
   VISOR 360
   ========================================================= */
.spin { max-width: min(920px, calc((100vh - 220px) * 4 / 3)); min-width: min(100%, 320px); margin: 0 auto; }
.spin-stage {
  position: relative; aspect-ratio: 4 / 3; border-radius: calc(var(--radius) + 8px); overflow: hidden;
  background: #8e8e90; cursor: grab; touch-action: pan-y; user-select: none; -webkit-user-select: none;
  border: 1px solid var(--line); box-shadow: 0 50px 100px -50px rgba(0, 0, 0, 0.8);
}
.spin-stage.is-dragging { cursor: grabbing; }
@media (max-width: 720px) {
  /* Renders verticales específicos para móvil (1080×1400) */
  .spin-stage { aspect-ratio: 1080 / 1400; }
  [data-spin-view]:not([data-src-mobile]) { display: none; }
}
.spin-stage canvas { width: 100%; height: 100%; }
.spin-hint {
  position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%);
  display: inline-flex; align-items: center; gap: 10px; padding: 9px 16px; border-radius: 999px;
  background: rgba(10, 12, 16, 0.72); color: #fff; font-size: 0.84rem; font-weight: 700;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); transition: opacity 0.4s; pointer-events: none;
  white-space: nowrap;
}
@media (max-width: 560px) { .spin-hint { font-size: 0.76rem; padding: 7px 12px; bottom: 12px; } }
.spin-hint svg { width: 18px; height: 18px; }
.spin.is-touched .spin-hint { opacity: 0; }
.spin-controls { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 20px; flex-wrap: wrap; }
.segmented { display: inline-flex; padding: 4px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); }
.segmented button {
  border: 0; background: none; cursor: pointer; padding: 9px 18px; border-radius: 999px;
  font-weight: 700; font-size: 0.9rem; color: var(--muted); transition: background 0.2s, color 0.2s;
}
.segmented button[aria-pressed="true"], .segmented button[aria-selected="true"] { background: var(--text); color: var(--bg); }
.spin-range { flex: 1; min-width: 180px; max-width: 360px; accent-color: var(--accent); }
.spin-play {
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line-strong); background: var(--surface);
  display: grid; place-items: center; cursor: pointer;
}
.spin-play svg { width: 14px; height: 14px; }
.spin-play .i-play { display: none; }
.spin-play.is-paused .i-play { display: block; }
.spin-play.is-paused .i-pause { display: none; }

/* =========================================================
   MEDIA / KIT
   ========================================================= */
.media-frame {
  position: relative; border-radius: calc(var(--radius) + 6px); overflow: hidden; border: 1px solid var(--line);
  background: var(--studio);
}
.media-frame video, .media-frame img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.media-caption { margin-top: 12px; font-size: 0.84rem; color: var(--dim); }

.kit-list { display: grid; gap: 0; margin-top: 26px; border-top: 1px solid var(--line); }
.kit-list li { display: flex; gap: 16px; align-items: baseline; padding: 16px 0; border-bottom: 1px solid var(--line); }
.kit-list .k { font-size: 0.78rem; font-weight: 700; color: var(--dim); min-width: 28px; }
.kit-list strong { display: block; }
.kit-list span { color: var(--muted); font-size: 0.95rem; }

/* =========================================================
   PASOS / FLUJO
   ========================================================= */
.steps { counter-reset: s; display: grid; gap: clamp(16px, 2vw, 22px); }
.steps.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 980px) { .steps.grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .steps.grid-4 { grid-template-columns: 1fr; } }
.step-card { position: relative; padding: 28px 24px 26px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
.step-card::before {
  counter-increment: s; content: counter(s, decimal-leading-zero);
  display: block; font-size: 2.4rem; font-weight: 900; letter-spacing: -0.04em; line-height: 1; margin-bottom: 22px;
  background: linear-gradient(180deg, var(--accent), rgba(153, 204, 255, 0.25)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step-card h3 { font-size: 1.16rem; margin-bottom: 8px; }
.step-card p { color: var(--muted); font-size: 0.96rem; margin: 0; }

/* Comparativa Antes vs Con VK0 */
.compare { max-width: 980px; margin: 0 auto; }
.compare-tabs { display: flex; justify-content: center; margin-bottom: 30px; }
.compare-panel { display: grid; gap: 12px; }
.compare-panel[hidden] { display: none; }
.compare-row {
  display: grid; grid-template-columns: 54px 1fr; gap: 18px; align-items: center; padding: 18px 22px;
  border-radius: 18px; border: 1px solid var(--line); background: var(--surface);
  animation: panelIn 0.5s var(--ease) both;
}
.compare-row:nth-child(2) { animation-delay: 0.05s; }
.compare-row:nth-child(3) { animation-delay: 0.1s; }
.compare-row:nth-child(4) { animation-delay: 0.15s; }
.compare-row:nth-child(5) { animation-delay: 0.2s; }
.compare-row .ic { width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center; background: rgba(255, 255, 255, 0.05); }
.compare-row .ic svg { width: 24px; height: 24px; }
.compare-row strong { display: block; font-size: 1.05rem; }
.compare-row span { color: var(--muted); font-size: 0.95rem; }
.compare-panel.is-before .ic { color: #ff9a9a; background: rgba(255, 120, 120, 0.08); }
.compare-panel.is-after .ic { color: var(--accent); background: rgba(153, 204, 255, 0.1); }
.compare-panel.is-after .compare-row { border-color: rgba(153, 204, 255, 0.2); }

/* =========================================================
   AUDIENCIAS / PILOTO
   ========================================================= */
.audience-card { display: flex; flex-direction: column; }
.audience-card .check-list { margin: 16px 0 24px; flex: 1; }
.audience-card .who { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--dim); margin-bottom: 14px; display: block; }
.audience-card.featured { border-color: rgba(153, 204, 255, 0.35); background: linear-gradient(180deg, rgba(153, 204, 255, 0.09), rgba(153, 204, 255, 0.02)); }

.cta-band {
  position: relative; overflow: hidden; border-radius: calc(var(--radius) + 10px); padding: clamp(36px, 6vw, 72px);
  background: radial-gradient(90% 140% at 100% 0%, rgba(92, 182, 255, 0.28), transparent 60%), var(--surface);
  border: 1px solid rgba(153, 204, 255, 0.2);
}
.cta-band .h2 { max-width: 18ch; }
.cta-band .lead { margin-top: 16px; }
.cta-band .btn-row { margin-top: 28px; }

.stat-row { display: flex; flex-wrap: wrap; gap: 18px clamp(20px, 3vw, 44px); margin-top: 36px; }
.stat strong { display: block; font-size: clamp(1.35rem, 2.2vw, 1.9rem); font-weight: 900; letter-spacing: -0.03em; }
.stat span { color: var(--muted); font-size: 0.92rem; }

/* Timeline */
.timeline { position: relative; display: grid; gap: 0; }
.timeline::before { content: ""; position: absolute; left: 11px; top: 8px; bottom: 8px; width: 2px; background: var(--line-strong); }
.tl-item { position: relative; padding: 0 0 36px 48px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: 3px; top: 5px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--line-strong);
}
.tl-item.done::before { background: var(--accent); border-color: var(--accent); }
.tl-item.now::before { background: var(--bg); border-color: var(--accent); box-shadow: 0 0 0 6px rgba(153, 204, 255, 0.18); }
.tl-item .when { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); }
.tl-item.now .when { color: var(--accent); }
.tl-item h3 { font-size: 1.2rem; margin: 6px 0 6px; }
.tl-item p { color: var(--muted); margin: 0; }

/* =========================================================
   FAQ
   ========================================================= */
.faq { display: grid; gap: 10px; }
.faq details { border: 1px solid var(--line); border-radius: 16px; background: var(--surface); overflow: hidden; transition: border-color 0.2s; }
.faq details[open] { border-color: var(--line-strong); }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 56px 20px 22px; font-weight: 700; font-size: 1.04rem; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 22px; top: 50%; width: 12px; height: 12px; margin-top: -8px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); transition: transform 0.25s var(--ease), margin 0.25s;
}
.faq details[open] summary::after { transform: rotate(225deg); margin-top: -2px; }
.faq .answer { padding: 0 22px 22px; color: var(--muted); }
.faq .answer p:last-child { margin-bottom: 0; }
.faq-group + .faq-group { margin-top: 48px; }
.faq-group > h2 { font-size: 1.3rem; margin-bottom: 16px; }

/* =========================================================
   FORMULARIO
   ========================================================= */
.form-card {
  padding: clamp(24px, 3.4vw, 40px); border-radius: calc(var(--radius) + 4px);
  background: var(--surface); border: 1px solid var(--line-strong); box-shadow: 0 40px 90px -50px rgba(0, 0, 0, 0.9);
}
.form-card h3 { font-size: 1.4rem; margin-bottom: 6px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 560px) { .form-grid { grid-template-columns: 1fr; } }
.field label, .field .label { display: block; font-size: 0.84rem; font-weight: 700; color: var(--muted); margin-bottom: 7px; }
.field .opt { font-weight: 400; color: var(--dim); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 50px; padding: 12px 14px; border-radius: 12px; font: inherit; font-size: 1rem; color: var(--text);
  background: var(--bg); border: 1px solid var(--line-strong); transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 110px; resize: vertical; }
.field select { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a1abbb' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 18px; padding-right: 40px; }
.field input::placeholder, .field textarea::placeholder { color: var(--dim); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px rgba(153, 204, 255, 0.15); }
.choice-row { display: flex; flex-wrap: wrap; gap: 8px; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.choice span {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: 999px; font-size: 0.92rem; font-weight: 700;
  border: 1px solid var(--line-strong); color: var(--muted); background: var(--bg); transition: all 0.2s;
}
.choice input:checked + span { background: rgba(153, 204, 255, 0.12); border-color: var(--accent); color: var(--text); }
.choice input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.consent { font-size: 0.8rem; color: var(--dim); margin-top: 14px; }
.consent a { text-decoration: underline; }
.form-note { min-height: 1.2em; font-size: 0.88rem; color: #ffb4b4; margin: 10px 0 0; }
#submitBtn { margin-top: 18px; opacity: 0.55; }
#submitBtn.ready { opacity: 1; }
#submitBtn[disabled] { cursor: progress; }
.hidden { display: none !important; }
.success-panel { text-align: center; padding: 30px 10px; }
.success-panel .ok { width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%; display: grid; place-items: center; background: rgba(91, 228, 155, 0.14); color: #5be49b; }
.success-panel .ok svg { width: 30px; height: 30px; }
.success-panel h3 { font-size: 1.6rem; margin-bottom: 10px; }
.success-panel p { color: var(--muted); }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { border-top: 1px solid var(--line); padding: clamp(56px, 7vw, 88px) 0 36px; background: var(--bg); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-brand p { color: var(--muted); max-width: 32ch; margin-top: 16px; font-size: 0.95rem; }
.footer-col h4 { font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--dim); margin-bottom: 14px; }
.footer-col a { display: block; padding: 5px 0; color: var(--muted); font-size: 0.95rem; }
.footer-col a:hover { color: var(--text); }
.socials { display: flex; gap: 10px; margin-top: 20px; }
.socials a { width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--line-strong); display: grid; place-items: center; transition: background 0.2s; }
.socials a:hover { background: rgba(255, 255, 255, 0.07); }
.socials img { width: 18px; height: 18px; filter: brightness(0) invert(1); opacity: 0.85; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--dim); font-size: 0.84rem; }
.footer-bottom a:hover { color: var(--text); }

/* =========================================================
   PROSA (legales)
   ========================================================= */
.prose { max-width: 780px; }
.prose h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; margin-bottom: 12px; }
.prose h2 { font-size: 1.35rem; margin: 40px 0 12px; }
.prose h3 { font-size: 1.1rem; margin: 26px 0 10px; }
.prose p, .prose li { color: #c9d0db; }
.prose ul { list-style: disc; padding-left: 22px; margin: 0 0 1em; }
.prose li { margin: 6px 0; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; font-size: 0.94rem; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { color: var(--text); }
.prose .card { margin-top: 24px; }

/* Nota prototipo */
.proto-note { display: flex; gap: 10px; align-items: flex-start; font-size: 0.82rem; color: var(--dim); margin-top: 20px; }
.on-studio .proto-note { color: var(--studio-muted); }
.proto-note svg { flex: none; width: 16px; height: 16px; margin-top: 2px; }

/* =========================================================
   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; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* Legales */
.prose .section-head { margin-bottom: 28px; }
.prose .micro { font-size: 0.85rem; color: var(--dim); }
.prose hr { border: 0; border-top: 1px solid var(--line); }

/* Bloque "El siguiente paso" (visión de futuro) */
.future-note {
  display: grid; grid-template-columns: auto 1fr auto; gap: 14px 28px; align-items: center;
  margin-top: clamp(20px, 2.4vw, 28px); padding: clamp(20px, 2.6vw, 28px) clamp(22px, 3vw, 34px);
  border-radius: var(--radius); border: 1px dashed rgba(153, 204, 255, 0.4); background: rgba(153, 204, 255, 0.05);
}
.future-note .tag { font-size: 0.74rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); white-space: nowrap; }
.future-note p { margin: 0; color: var(--muted); }
.future-note p strong { color: var(--text); }
.future-note .link-arrow { white-space: nowrap; }
@media (max-width: 900px) { .future-note { grid-template-columns: 1fr; } }

/* =========================================================
   Texto justificado (párrafos)
   ========================================================= */
main p, .site-footer p, .check-list li, .faq .answer, .part-panel .part-desc {
  text-align: justify;
  -webkit-hyphens: auto; hyphens: auto;
}
/* En bloques centrados: justificado con la última línea centrada */
.center p, .section-head.center .lead, .success-panel p { text-align: justify; text-align-last: center; }
/* Titulares-frase y textos muy cortos: sin justificar */
main p.statement, .scrub-caption p, .media-caption, .consent, .form-note, .proto-note, .small { text-align: left; text-align-last: auto; -webkit-hyphens: manual; hyphens: manual; }
p.center, .center > p.center { text-align: center; }