/* =========================================================
   EXE DVH — stylesheet
   Design tokens mirror the Tailwind config in index.html.
   ========================================================= */

:root {
  --c-primary: #394D59;
  --c-primary-dark: #2a3841;
  --c-secondary: #4B8CA6;
  --c-secondary-light: #6ba3ba;
  --c-accent: #FF9700;
  --c-surface: #F2F1F0;
  --radius: 10px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
}

::selection { background: var(--c-accent); color: #fff; }

/* Custom scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--c-surface); }
::-webkit-scrollbar-thumb { background: var(--c-primary); border-radius: 10px; border: 2px solid var(--c-surface); }
.dark ::-webkit-scrollbar-track { background: var(--c-primary-dark); }
.dark ::-webkit-scrollbar-thumb { background: var(--c-secondary); border-color: var(--c-primary-dark); }

img { max-width: 100%; }

/* =========================================================
   Layout helpers
   ========================================================= */
.section-pad { padding-block: 6.5rem; }
@media (max-width: 640px) { .section-pad { padding-block: 4.5rem; } }

.eyebrow {
  font-family: 'Space Grotesk', sans-serif;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--c-secondary);
  margin-bottom: .9rem;
}

.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: clamp(1.9rem, 3.4vw, 2.75rem);
  line-height: 1.15;
  color: var(--c-primary);
  letter-spacing: -0.01em;
}
.dark .section-title { color: var(--c-surface); }

.shadow-elegant { box-shadow: 0 30px 60px -25px rgba(57,77,89,.35); }
.bg-grid-pattern {
  background-image: linear-gradient(currentColor 1px, transparent 1px), linear-gradient(90deg, currentColor 1px, transparent 1px);
  background-size: 48px 48px;
}

/* =========================================================
   Reveal-on-scroll animation (IntersectionObserver driven)
   ========================================================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--d, 0ms); }
.reveal.in-view { opacity: 1; transform: none; }
/* Defensive: never let content stay invisible if JS fails to run */
.reveal[data-split] { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { transition-duration: .01ms; }
}

/* =========================================================
   Navbar
   ========================================================= */
#navbar { color: #fff; }
#navbar.scrolled {
  color: var(--c-primary);
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px -20px rgba(57,77,89,.35);
}
.dark #navbar.scrolled { color: var(--c-surface); background: rgba(42,56,65,.85); }
#navbar.scrolled nav { height: 4.5rem; }

.nav-link { position: relative; opacity: .9; transition: opacity .3s; }
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -6px; height: 2px;
  background: var(--c-accent); transition: right .35s var(--ease);
}
.nav-link:hover { opacity: 1; }
.nav-link:hover::after { right: 0; }

.mobile-link { display: block; padding: .7rem 0; border-bottom: 1px solid rgba(57,77,89,.08); }
.dark .mobile-link { border-color: rgba(242,241,240,.08); }

#menuToggle[aria-expanded="true"] .burger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#menuToggle[aria-expanded="true"] .burger-line:nth-child(2) { opacity: 0; }
#menuToggle[aria-expanded="true"] .burger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg) translateX(0); width: 1.5rem; }

/* =========================================================
   Buttons
   ========================================================= */
.btn-accent {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  background: var(--c-accent); color: #fff; font-weight: 600; font-size: .85rem;
  padding: .85rem 1.6rem; border-radius: var(--radius);
  transition: background .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
  box-shadow: 0 12px 24px -10px rgba(255,151,0,.55);
  white-space: nowrap;
}
.btn-accent:hover { background: #e08600; transform: translateY(-2px); box-shadow: 0 16px 30px -10px rgba(255,151,0,.65); }
.btn-accent:active { transform: translateY(0); }

.btn-outline-light {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border: 1.5px solid rgba(255,255,255,.55); color: #fff; font-weight: 600; font-size: .85rem;
  padding: .85rem 1.6rem; border-radius: var(--radius);
  transition: background .3s var(--ease), border-color .3s var(--ease);
  backdrop-filter: blur(6px);
}
.btn-outline-light:hover { background: rgba(255,255,255,.12); border-color: #fff; }

/* =========================================================
   Icon badge (populated by script.js from data-icon)
   ========================================================= */
.icon-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.75rem; height: 2.75rem; border-radius: 50%;
  background: rgba(75,140,166,.12); color: var(--c-secondary);
  flex-shrink: 0;
}
.icon-badge.lg { width: 3.25rem; height: 3.25rem; }
.icon-badge svg { width: 1.35rem; height: 1.35rem; }
.icon-badge.lg svg { width: 1.6rem; height: 1.6rem; }
.dark .icon-badge { background: rgba(107,163,186,.16); }

/* =========================================================
   Nosotros cards
   ========================================================= */
.info-card {
  background: rgba(255,255,255,.55);
  border: 1px solid rgba(57,77,89,.08);
  border-radius: var(--radius);
  padding: 1.4rem;
  backdrop-filter: blur(10px);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.info-card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px -25px rgba(57,77,89,.4); border-color: rgba(255,151,0,.35); }
.info-card h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 1rem; margin: .9rem 0 .3rem; }
.info-card p { font-size: .85rem; color: rgba(57,77,89,.6); line-height: 1.5; }
.dark .info-card { background: rgba(242,241,240,.04); border-color: rgba(242,241,240,.08); }
.dark .info-card p { color: rgba(242,241,240,.55); }

.mission-quote {
  border-left: 3px solid var(--c-accent);
  padding: 1.1rem 1.5rem;
  background: rgba(75,140,166,.06);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.dark .mission-quote { background: rgba(75,140,166,.1); }

.glass-badge {
  margin-top: -3rem; margin-left: 1.5rem; width: fit-content;
  background: rgba(255,255,255,.7); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.6);
  border-radius: var(--radius); padding: 1rem 1.4rem;
  display: flex; flex-direction: column; gap: .1rem; position: relative;
  box-shadow: 0 20px 45px -20px rgba(57,77,89,.45);
}
.dark .glass-badge { background: rgba(42,56,65,.7); border-color: rgba(242,241,240,.1); }

/* =========================================================
   DVH technical diagram
   ========================================================= */
.dvh-diagram { display: flex; align-items: stretch; height: 320px; gap: 0; }
.dvh-pane, .dvh-chamber {
  display: flex; align-items: center; justify-content: center; text-align: center;
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: .8rem;
  letter-spacing: .04em; color: #fff;
  writing-mode: horizontal-tb;
}
.dvh-pane {
  width: 70px;
  background: linear-gradient(160deg, rgba(107,163,186,.55), rgba(75,140,166,.28));
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 6px;
  box-shadow: inset 0 0 30px rgba(255,255,255,.15);
}
.dvh-chamber {
  width: 130px;
  background: repeating-linear-gradient(135deg, rgba(255,255,255,.05) 0 10px, rgba(255,255,255,.09) 10px 20px);
  border-top: 1px dashed rgba(255,255,255,.3);
  border-bottom: 1px dashed rgba(255,255,255,.3);
  color: rgba(255,255,255,.75);
}
.dvh-diagram > * + * { margin-left: 6px; }

.step-num {
  flex-shrink: 0; width: 2.5rem; height: 2.5rem; border-radius: 50%;
  border: 1.5px solid var(--c-accent); color: var(--c-accent);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk', sans-serif; font-weight: 600;
}

/* =========================================================
   Beneficios
   ========================================================= */
.benefit-card {
  background: #fff; border: 1px solid rgba(57,77,89,.07);
  border-radius: var(--radius); padding: 1.75rem;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.benefit-card:hover { transform: translateY(-6px); box-shadow: 0 25px 50px -28px rgba(57,77,89,.4); border-color: rgba(255,151,0,.3); }
.benefit-card h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; margin: 1.1rem 0 .4rem; font-size: 1.02rem; color: var(--c-primary); }
.benefit-card p { font-size: .85rem; color: rgba(57,77,89,.58); line-height: 1.55; }
.dark .benefit-card { background: rgba(242,241,240,.03); border-color: rgba(242,241,240,.08); }
.dark .benefit-card h3 { color: var(--c-surface); }
.dark .benefit-card p { color: rgba(242,241,240,.5); }

.composition-photo {
  aspect-ratio: 16/9;
  object-fit: cover;
  background: linear-gradient(160deg, rgba(75,140,166,.12), rgba(57,77,89,.08));
  color: rgba(57,77,89,.55);
  text-align: center;
}
.dark .composition-photo { background: linear-gradient(160deg, rgba(75,140,166,.18), rgba(57,77,89,.12)); color: rgba(242,241,240,.6); }

.link-more { color: var(--c-secondary); font-weight: 600; font-size: .85rem; display: inline-flex; align-items: center; gap: .3rem; }
.link-more span { transition: transform .3s var(--ease); }
.link-more:hover span { transform: translateX(4px); }

/* =========================================================
   Comparativa table
   ========================================================= */
.compare-table { border-collapse: collapse; background: #fff; }
.dark .compare-table { background: rgba(42,56,65,.5); }
.compare-table th, .compare-table td { padding: 1rem 1.4rem; text-align: center; }
.compare-table thead th {
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; background: var(--c-primary); color: #fff;
  font-size: .85rem; letter-spacing: .03em;
}
.compare-table thead th.is-featured { background: var(--c-accent); }
.compare-table tbody tr:nth-child(even) { background: rgba(75,140,166,.05); }
.dark .compare-table tbody tr:nth-child(even) { background: rgba(75,140,166,.1); }
.compare-table td.is-featured { background: rgba(255,151,0,.08); font-weight: 600; }
.cell-x { color: rgba(57,77,89,.35); font-size: 1.1rem; }
.cell-partial { color: var(--c-secondary); font-weight: 600; }
.cell-check { color: #1c8a4b; font-size: 1.15rem; font-weight: 700; }

/* =========================================================
   Fábrica — photos (graceful background while files aren't uploaded yet)
   ========================================================= */
.factory-photo {
  aspect-ratio: 4/3;
  object-fit: cover;
  background: linear-gradient(160deg, rgba(75,140,166,.25), rgba(57,77,89,.15));
}

/* =========================================================
   Timeline (proceso)
   ========================================================= */
.timeline { position: relative; display: grid; grid-template-columns: repeat(1, 1fr); gap: 2.5rem; }
@media (min-width: 768px) { .timeline { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .timeline { grid-template-columns: repeat(6, 1fr); } }
.timeline-track { display: none; }
@media (min-width: 1024px) {
  .timeline-track { display: block; position: absolute; top: 1.25rem; left: 5%; right: 5%; height: 1px; background: rgba(57,77,89,.15); }
  .dark .timeline-track { background: rgba(242,241,240,.15); }
}
.timeline-item { text-align: center; position: relative; }
.timeline-dot {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem; border-radius: 50%; background: var(--c-primary); color: #fff;
  font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: .95rem; position: relative; z-index: 1;
  margin-bottom: 1rem;
}
.timeline-item:nth-child(odd) .timeline-dot { background: var(--c-secondary); }
.timeline-item h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 1rem; color: var(--c-primary); }
.dark .timeline-item h3 { color: var(--c-surface); }
.timeline-item p { font-size: .82rem; color: rgba(57,77,89,.55); margin-top: .35rem; line-height: 1.5; }
.dark .timeline-item p { color: rgba(242,241,240,.5); }

/* =========================================================
   FAQ accordion
   ========================================================= */
.faq-item { border: 1px solid rgba(57,77,89,.1); border-radius: var(--radius); overflow: hidden; background: #fff; }
.dark .faq-item { background: rgba(242,241,240,.03); border-color: rgba(242,241,240,.1); }
.faq-question {
  width: 100%; text-align: left; display: flex; justify-content: space-between; align-items: center;
  padding: 1.2rem 1.5rem; font-weight: 600; font-family: 'Space Grotesk', sans-serif; font-size: .95rem;
  color: var(--c-primary);
}
.dark .faq-question { color: var(--c-surface); }
.faq-icon { color: var(--c-accent); font-size: 1.4rem; line-height: 1; transition: transform .35s var(--ease); flex-shrink: 0; margin-left: 1rem; }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s var(--ease); }
.faq-answer p { padding: 0 1.5rem 1.2rem; color: rgba(57,77,89,.62); font-size: .9rem; line-height: 1.6; }
.dark .faq-answer p { color: rgba(242,241,240,.55); }

/* =========================================================
   Contact form + cards
   ========================================================= */
.form-field label { display: block; font-size: .8rem; font-weight: 600; margin-bottom: .4rem; color: var(--c-primary); }
.dark .form-field label { color: var(--c-surface); }
.form-field input, .form-field textarea {
  width: 100%; border: 1px solid rgba(57,77,89,.18); border-radius: var(--radius);
  padding: .75rem 1rem; font-size: .9rem; background: #fff; color: var(--c-primary);
  transition: border-color .3s, box-shadow .3s;
}
.form-field input:focus, .form-field textarea:focus {
  outline: none; border-color: var(--c-secondary); box-shadow: 0 0 0 3px rgba(75,140,166,.18);
}
.dark .form-field input, .dark .form-field textarea { background: rgba(242,241,240,.05); border-color: rgba(242,241,240,.18); color: var(--c-surface); }

.contact-card {
  background: #fff; border: 1px solid rgba(57,77,89,.07); border-radius: var(--radius); padding: 1.4rem;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.contact-card:hover { transform: translateY(-3px); box-shadow: 0 20px 40px -25px rgba(57,77,89,.35); }
.contact-card h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: .95rem; margin: .8rem 0 .25rem; color: var(--c-primary); }
.contact-card p { font-size: .85rem; color: rgba(57,77,89,.6); line-height: 1.5; }
.dark .contact-card { background: rgba(242,241,240,.03); border-color: rgba(242,241,240,.08); }
.dark .contact-card h3 { color: var(--c-surface); }
.dark .contact-card p { color: rgba(242,241,240,.5); }

/* =========================================================
   Footer
   ========================================================= */
.footer-heading { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; color: var(--c-surface); }
.footer-link { transition: color .3s; }
.footer-link:hover { color: var(--c-accent); }
.social-icon {
  width: 2.25rem; height: 2.25rem; border-radius: 50%; border: 1px solid rgba(242,241,240,.2);
  display: inline-flex; align-items: center; justify-content: center; color: rgba(242,241,240,.7);
  transition: all .3s var(--ease);
}
.social-icon svg { width: 1.1rem; height: 1.1rem; }
.social-icon:hover { background: var(--c-accent); border-color: var(--c-accent); color: #fff; transform: translateY(-3px); }

/* =========================================================
   Floating action buttons
   ========================================================= */
.fab {
  position: fixed; right: 1.5rem; z-index: 40;
  width: 3.5rem; height: 3.5rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 15px 35px -12px rgba(0,0,0,.4);
  transition: transform .3s var(--ease), opacity .3s var(--ease), box-shadow .3s var(--ease);
}
.fab:hover { transform: translateY(-3px) scale(1.05); }
.fab-whatsapp { bottom: 1.5rem; background: #25D366; color: #fff; }
.fab-top { bottom: 6rem; background: var(--c-primary); color: #fff; }
.fab-top svg { width: 1.3rem; height: 1.3rem; }

/* =========================================================
   Hero scroll indicator
   ========================================================= */
.scroll-mouse { width: 26px; height: 42px; border: 1.5px solid rgba(255,255,255,.6); border-radius: 14px; position: relative; display: block; }
.scroll-dot { position: absolute; top: 7px; left: 50%; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--c-accent); animation: scrollDot 1.8s infinite var(--ease); }
@keyframes scrollDot { 0% { top: 7px; opacity: 1; } 70% { top: 22px; opacity: 0; } 100% { top: 22px; opacity: 0; } }