/* ===== SETUP — Design tokens ===== */
:root {
  --black: #05070a;
  --charcoal: #0c0f14;
  --graphite: #171b22;
  --graphite-2: #20242c;
  --ivory: #f3efe7;
  --ivory-dim: #cfcabd;
  --metal: #8b93a1;
  --metal-dim: #565c66;
  --accent: #4f8cff;
  --accent-dim: #2f5fc4;

  --font-head: 'Manrope', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container: 1280px;
  --gutter: clamp(1.25rem, 4vw, 4rem);

  --ease-out: cubic-bezier(.16,1,.3,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; font-size: 17px; }
body {
  margin: 0;
  background: var(--black);
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-head); font-weight: 700; margin: 0 0 .5em; letter-spacing: -0.02em; line-height: 1.1; }
h2 { font-size: clamp(2.1rem, 4vw, 3.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
p { line-height: 1.65; font-size: 1.05rem; color: var(--ivory-dim); margin: 0 0 1em; }
.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
section { position: relative; padding-block: clamp(4.5rem, 11vw, 9rem); }

/* subtle cinematic grain */
.grain { position: fixed; inset: 0; pointer-events: none; z-index: 999; opacity: .035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* Focus states */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ===== Loader ===== */
#loader {
  position: fixed; inset: 0; z-index: 1000;
  background: var(--black);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.5rem;
  transition: opacity .6s var(--ease-out), visibility .6s var(--ease-out);
}
#loader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-brand { font-family: var(--font-head); font-weight: 800; font-size: 1.1rem; letter-spacing: .3em; color: var(--ivory); }
.loader-bar { width: 180px; height: 2px; background: var(--graphite-2); overflow: hidden; border-radius: 2px; }
.loader-bar span { display: block; height: 100%; width: 0%; background: var(--accent); transition: width .2s linear; }

/* ===== Header ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem var(--gutter);
  background: linear-gradient(to bottom, rgba(5,7,10,.85), transparent);
}
.logo { font-family: var(--font-head); font-weight: 800; letter-spacing: .25em; font-size: 1.15rem; text-decoration: none; }
.site-nav { display: flex; gap: 2.25rem; list-style: none; margin: 0; padding: 0; }
.site-nav a { font-size: .95rem; text-decoration: none; color: var(--ivory-dim); transition: color .25s; }
.site-nav a:hover { color: var(--ivory); }
.nav-cta { border: 1px solid var(--metal-dim); padding: .6rem 1.3rem; border-radius: 999px; font-size: .9rem; text-decoration: none; }
.nav-toggle { display: none; }

/* ===== Nav dropdown — Soluciones ===== */
.nav-dropdown { position: relative; }
.nav-dropdown-trigger {
  display: inline-flex; align-items: center; gap: .4rem;
  background: none; border: none; padding: 0; margin: 0;
  font-family: inherit; font-size: .95rem; color: var(--ivory-dim);
  cursor: pointer; transition: color .25s;
}
.nav-dropdown-trigger:hover,
.nav-dropdown-trigger[aria-expanded="true"] { color: var(--ivory); }
.nav-dropdown-caret {
  width: 7px; height: 7px; margin-top: -2px;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg); transition: transform .25s var(--ease-out);
}
.nav-dropdown-trigger[aria-expanded="true"] .nav-dropdown-caret { transform: rotate(225deg); margin-top: 2px; }

.nav-dropdown-panel {
  position: absolute; top: calc(100% + 1.1rem); left: 50%;
  width: 480px; max-width: 80vw;
  transform: translateX(-50%) translateY(-6px);
  background: linear-gradient(165deg, rgba(26,31,39,.98), rgba(9,11,15,.99));
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 20px;
  padding: .9rem;
  box-shadow: 0 30px 70px rgba(0,0,0,.6), 0 0 0 1px rgba(255,255,255,.02) inset;
  display: grid; grid-template-columns: 1fr 1fr; gap: .2rem;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .22s var(--ease-out), transform .22s var(--ease-out), visibility 0s linear .22s;
  z-index: 200;
}
.nav-dropdown.is-open .nav-dropdown-panel {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  transition: opacity .22s var(--ease-out), transform .22s var(--ease-out), visibility 0s;
}
.nav-dropdown-item {
  display: flex; align-items: flex-start; gap: .7rem;
  padding: .65rem .65rem; border-radius: 12px;
  text-decoration: none; color: var(--ivory);
  transition: background .2s;
}
.nav-dropdown-item:hover, .nav-dropdown-item:focus-visible { background: rgba(79,140,255,.12); }
.nav-dropdown-item-icon {
  flex: none; width: 34px; height: 34px; border-radius: 9px;
  background: rgba(79,140,255,.12); border: 1px solid rgba(79,140,255,.28);
  display: flex; align-items: center; justify-content: center; color: var(--accent);
}
.nav-dropdown-item-icon svg { width: 17px; height: 17px; }
.nav-dropdown-item strong { display: block; font-family: var(--font-head); font-size: .88rem; font-weight: 700; margin-bottom: .2rem; line-height: 1.2; }
.nav-dropdown-item small { display: block; font-size: .76rem; color: var(--metal); line-height: 1.4; }
.nav-dropdown-foot { grid-column: 1 / -1; margin-top: .3rem; padding-top: .7rem; border-top: 1px solid rgba(255,255,255,.09); }
.nav-dropdown-foot a { display: block; padding: .55rem .65rem; font-size: .82rem; color: var(--accent); text-decoration: none; border-radius: 10px; transition: background .2s; }
.nav-dropdown-foot a:hover { background: rgba(79,140,255,.1); }

@media (min-width: 901px) {
  .nav-dropdown:hover .nav-dropdown-panel,
  .nav-dropdown-panel:focus-within {
    opacity: 1; visibility: visible; pointer-events: auto;
    transform: translateX(-50%) translateY(0);
    transition: opacity .22s var(--ease-out), transform .22s var(--ease-out), visibility 0s;
  }
}
@media (max-width: 1100px) {
  .nav-dropdown-panel { grid-template-columns: 1fr; width: 340px; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  z-index: 10;
}
.hero-pin {
  position: relative;
  top: 0 !important;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  z-index: 10;
}
.hero-media { position: absolute; inset: 0; z-index: 1; }
.hero-media video, .hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-scrim {
  position: absolute; inset: 0; z-index: 2;
  background:
    linear-gradient(100deg, rgba(3,4,6,.94) 0%, rgba(3,4,6,.86) 26%, rgba(3,4,6,.55) 46%, rgba(3,4,6,.15) 64%, rgba(3,4,6,0) 76%),
    linear-gradient(180deg, rgba(3,4,6,.6) 0%, rgba(3,4,6,.05) 24%, rgba(3,4,6,.05) 58%, rgba(3,4,6,.85) 100%);
}
.hero-content { position: relative; z-index: 3; width: 100%; }
.hero-eyebrow { font-size: .95rem; font-weight: 700; letter-spacing: .32em; text-transform: uppercase; color: var(--accent); margin-bottom: 1.25rem; opacity: 0; text-shadow: 0 2px 20px rgba(0,0,0,.6); }
.hero-title { font-size: clamp(2.6rem, 6.4vw, 5.6rem); max-width: 15ch; color: var(--ivory); opacity: 0; transform: translateY(24px); text-shadow: 0 4px 40px rgba(0,0,0,.65), 0 1px 3px rgba(0,0,0,.9); }
.hero-subtitle { font-size: clamp(1.15rem, 1.8vw, 1.45rem); max-width: 36ch; color: var(--ivory-dim); opacity: 0; transform: translateY(16px); text-shadow: 0 2px 24px rgba(0,0,0,.65), 0 1px 2px rgba(0,0,0,.9); }
.hero-scrollcue { position: absolute; bottom: 2.5rem; left: var(--gutter); z-index: 3; font-size: .85rem; color: var(--ivory-dim); display: flex; align-items: center; gap: .6rem; opacity: 0; text-shadow: 0 2px 12px rgba(0,0,0,.7); }
.hero-scrollcue::before { content: ''; width: 22px; height: 1px; background: var(--ivory-dim); }

/* ===== Sections shared ===== */
.eyebrow { font-size: .85rem; font-weight: 700; letter-spacing: .28em; text-transform: uppercase; color: var(--accent); margin-bottom: .9rem; display: block; }
.section-head { max-width: 680px; margin-bottom: 3.5rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }

/* Intro stats */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 2.5rem; }
.stat { border-top: 1px solid var(--graphite-2); padding-top: 1.1rem; }
.stat-num { font-family: var(--font-head); font-weight: 800; font-size: clamp(2.1rem, 3.4vw, 3rem); color: var(--ivory); display: block; }
.stat-label { font-size: .95rem; color: var(--metal); }

/* Media frame */
.media-frame { border-radius: 6px; overflow: hidden; border: 1px solid var(--graphite-2); background: var(--charcoal); }
.media-frame img { width: 100%; height: auto; }

/* Details list */
.detail-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; }
.detail-list li { border-bottom: 1px solid var(--graphite-2); padding-bottom: 1.1rem; display: flex; justify-content: space-between; gap: 1rem; }
.detail-list .label { color: var(--ivory); font-weight: 600; font-size: 1rem; }
.detail-list .value { color: var(--metal); font-size: 1rem; text-align: right; }

/* Methodology tabs (feature section) */
.tabs { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 2rem; }
.tab-btn {
  background: transparent; border: 1px solid var(--graphite-2); color: var(--ivory-dim);
  padding: .7rem 1.3rem; border-radius: 999px; font-family: var(--font-body); font-size: .95rem; cursor: pointer;
  transition: border-color .25s, color .25s, background .25s;
}
.tab-btn[aria-selected="true"] { color: var(--black); background: var(--accent); border-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; }
.tab-panel p { font-size: 1.1rem; }
.tab-panel .phase-duration { font-size: .9rem; font-weight: 600; color: var(--accent); letter-spacing: .08em; text-transform: uppercase; margin-bottom: .6rem; display:block; }

/* Sector labels (detail section) */
.sector-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 1.5rem; margin-top: 2.25rem; }
.sector-card { border: 1px solid var(--graphite-2); border-radius: 8px; padding: 1.75rem; background: var(--charcoal); }
.sector-card h3 { font-size: 1.2rem; margin-bottom: .6rem; }
.sector-card p { font-size: 1rem; margin: 0; }
.sector-card--with-media { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.sector-card-media { display: block; }
.sector-card-media img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; display: block; }
.sector-card-body { padding: 1.5rem 1.75rem 1.75rem; }

/* Configurator */
.configurator { background: var(--charcoal); border-radius: 10px; border: 1px solid var(--graphite-2); padding: clamp(1.75rem, 4vw, 3.25rem); display: grid; grid-template-columns: minmax(280px, 0.85fr) 1.4fr; gap: 2.5rem; align-items: start; }
.config-controls fieldset { border: 0; padding: 0; margin: 0 0 1.9rem; }
.config-controls legend { font-size: .9rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--metal); margin-bottom: .85rem; }
.chip-group { display: flex; flex-wrap: wrap; gap: .65rem; }
.chip-group input { position: absolute; opacity: 0; pointer-events: none; }
.chip-group label {
  border: 1px solid var(--graphite-2); border-radius: 8px; padding: .65rem 1.15rem; font-size: .95rem;
  cursor: pointer; color: var(--ivory-dim); transition: all .2s;
}
.chip-group input:checked + label { border-color: var(--accent); color: var(--ivory); background: rgba(79,140,255,.12); }
.chip-group input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 2px; }
.config-summary { border-top: 1px solid var(--graphite-2); padding-top: 1.4rem; margin-top: 1.5rem; }
.config-summary h3 { font-size: 1.05rem; margin-bottom: .85rem; }
#configModules { list-style: none; padding: 0; margin: 0 0 1.5rem; display: grid; gap: .5rem; font-size: .98rem; color: var(--ivory-dim); }
#configModules li::before { content: '— '; color: var(--accent); }
.config-preview img { border-radius: 8px; width: 100%; min-width: 0; aspect-ratio: 4/3; object-fit: cover; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: .6rem; border-radius: 999px; padding: 1rem 1.9rem; font-family: var(--font-body); font-size: 1rem; font-weight: 600; text-decoration: none; cursor: pointer; border: 1px solid transparent; transition: all .25s; }
.btn-primary { background: var(--accent); color: var(--black); }
.btn-primary:hover { background: #6ba0ff; }
.btn-ghost { background: transparent; border-color: var(--metal-dim); color: var(--ivory); }
.btn-ghost:hover { border-color: var(--ivory); }

/* Premium edition */
.premium { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,5rem); align-items: center; }
.premium-list { list-style: none; padding: 0; margin: 1.5rem 0 2.25rem; display: grid; gap: 1.05rem; }
.premium-list li { padding-left: 1.5rem; position: relative; font-size: 1.05rem; color: var(--ivory-dim); }
.premium-list li::before { content: ''; position: absolute; left: 0; top: .6em; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* Form */
.contact-form { max-width: 720px; margin-top: 2.5rem; display: grid; gap: 1.25rem; }
.form-row { display: grid; gap: 1.25rem; grid-template-columns: 1fr 1fr; }
.field { display: grid; gap: .4rem; }
.field label { font-size: .9rem; color: var(--metal); }
.field input, .field select, .field textarea {
  background: var(--charcoal); border: 1px solid var(--graphite-2); border-radius: 6px; color: var(--ivory);
  padding: .9rem 1rem; font-family: var(--font-body); font-size: 1rem;
}
.field textarea { resize: vertical; min-height: 120px; }
.field .error { font-size: .85rem; color: #ff8080; min-height: 1em; }
.field.has-error input, .field.has-error textarea, .field.has-error select { border-color: #ff6b6b; }
.char-count { font-size: .82rem; color: var(--metal); text-align: right; }
.form-status { font-size: .98rem; padding: 1.1rem 1.35rem; border-radius: 6px; display: none; }
.form-status.is-success { display: block; background: rgba(79,140,255,.12); border: 1px solid var(--accent); color: var(--ivory); }
.form-status.is-error { display: block; background: rgba(255,107,107,.12); border: 1px solid #ff6b6b; color: var(--ivory); }

/* Footer */
.site-footer { border-top: 1px solid var(--graphite-2); padding: 3.5rem var(--gutter); font-size: .95rem; color: var(--metal); }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.5rem; min-width: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; list-style: none; padding: 0; margin: 0; min-width: 0; }
.footer-links a { text-decoration: none; color: var(--metal); }
.footer-links a:hover { color: var(--ivory); }

/* Sector card as link (homepage -> subpages) */
.sector-card-link { display: block; text-decoration: none; transition: border-color .25s, transform .25s; }
.sector-card-link:hover, .sector-card-link:focus-visible { border-color: var(--accent); transform: translateY(-2px); }
.sector-card-link .sector-card { height: 100%; }
.sector-card-more { display: inline-block; margin-top: .9rem; font-size: .9rem; color: var(--accent); font-weight: 600; }

/* Secondary page hero (static, non-video) */
.page-hero { padding-top: clamp(7rem, 14vw, 10rem); }
.page-hero .eyebrow { margin-bottom: 1rem; }
.page-hero h1 { font-size: clamp(2.4rem, 5vw, 4rem); max-width: 16ch; }
.page-hero p { font-size: 1.15rem; max-width: 42ch; }
.page-hero .cta-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }

/* Numbered steps ("Cómo funciona") */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 1.5rem; counter-reset: step; }
.steps li { counter-increment: step; border: 1px solid var(--graphite-2); border-radius: 8px; padding: 1.75rem; background: var(--charcoal); position: relative; }
.steps li::before {
  content: counter(step);
  font-family: var(--font-head); font-weight: 800; font-size: 1rem; color: var(--black);
  background: var(--accent); width: 2.25rem; height: 2.25rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; margin-bottom: 1.1rem;
}
.steps h3 { font-size: 1.1rem; margin-bottom: .5rem; }
.steps p { font-size: .98rem; margin: 0; }
.workflow-media { margin-top: clamp(2rem, 5vw, 4rem); }

/* Accordion (módulos agrupados, FAQ) */
.accordion { border-top: 1px solid var(--graphite-2); }
.accordion-item { border-bottom: 1px solid var(--graphite-2); }
.accordion-trigger {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  background: transparent; border: 0; text-align: left; cursor: pointer;
  padding: 1.4rem .25rem; font-family: var(--font-head); font-weight: 700; font-size: 1.1rem; color: var(--ivory);
}
.accordion-trigger .accordion-icon { flex-shrink: 0; width: 1.1rem; height: 1.1rem; position: relative; }
.accordion-trigger .accordion-icon::before, .accordion-trigger .accordion-icon::after {
  content: ''; position: absolute; background: var(--accent); border-radius: 2px;
}
.accordion-trigger .accordion-icon::before { top: 50%; left: 0; width: 100%; height: 2px; transform: translateY(-50%); }
.accordion-trigger .accordion-icon::after { left: 50%; top: 0; width: 2px; height: 100%; transform: translateX(-50%); transition: transform .25s; }
.accordion-trigger[aria-expanded="true"] .accordion-icon::after { transform: translateX(-50%) scaleY(0); }
.accordion-panel { overflow: hidden; }
.accordion-panel-inner { padding: 0 .25rem 1.6rem; }
.accordion-panel-inner p { font-size: .98rem; margin: 0; }
.accordion-panel[hidden] { display: none; }
.modulos-extra { margin-top: 1.75rem; font-size: .95rem; color: var(--metal); max-width: 68ch; }

/* Final CTA band */
.cta-band { text-align: center; max-width: 720px; margin-inline: auto; }
.cta-band h2 { font-size: clamp(2rem, 4vw, 3rem); }
.cta-band .cta-row { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-top: 2rem; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* Responsive */
@media (max-width: 900px) {
  .grid-2, .configurator, .premium { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .site-nav { display: none; }
  .stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .stats { grid-template-columns: 1fr; }
}