/* ============================================================
   GASIN – Components CSS
   components.css  (nav, footer, area-nav, service cards, etc.)
   ============================================================ */

/* ══════════════════════════════════════════════════════════════
   NAVIGATION
   ══════════════════════════════════════════════════════════════ */
#main-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
#main-nav.scrolled {
  box-shadow: var(--shadow-sm);
  border-bottom-color: var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 0;
}
/* Logo */
.nav-logo { display: flex; align-items: center; gap: 0; flex-shrink: 0; text-decoration: none; }
.nav-logo svg { width: 42px; height: 42px; }
.nav-logo-img {
  height: 38px;
  width: auto;
  display: block;
  object-fit: contain;
}
.nav-logo-text {
  font-family: var(--font-heading);
  font-size: 1.6rem; font-weight: 800;
  color: var(--dark); letter-spacing: -.04em;
}
.nav-logo-text span { color: var(--orange); }

/* Nav links */
.nav-links {
  display: flex; align-items: center;
  margin-left: auto; gap: 0;
}
.nav-links a, .nav-links .nav-dropdown-toggle {
  font-size: .85rem; font-weight: 500;
  color: var(--dark);
  padding: 0 18px;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: color var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
}
.nav-links a:hover, .nav-links .nav-dropdown-toggle:hover { color: var(--orange); }
.nav-links a.active { color: var(--orange); }
.nav-links a.active::after {
  content: '';
  position: absolute; bottom: 0; left: 18px; right: 18px;
  height: 2px; background: var(--orange);
}

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
  display: flex; align-items: center; gap: 6px;
}
.nav-dropdown-toggle svg { width:14px; height:14px; transition: transform var(--transition-fast); }
.nav-dropdown.open .nav-dropdown-toggle svg { transform: rotate(180deg); }
.nav-dropdown-toggle.active-area { color: var(--orange); }

.nav-mega {
  position: fixed;
  top: var(--nav-h);
  left: 50%;
  transform: translateX(-50%);
  width: min(760px, 96vw);
  background: var(--white);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 28px 24px;
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  z-index: 1001;
}
.nav-dropdown.open .nav-mega { display: grid; animation: megaIn .18s ease; }

@keyframes megaIn {
  from { opacity:0; transform: translateX(-50%) translateY(-6px); }
  to   { opacity:1; transform: translateX(-50%) translateY(0); }
}

.mega-link {
  display: flex; flex-direction: column; gap: 4px;
  padding: 16px; border-radius: var(--radius);
  transition: background var(--transition-fast);
  text-decoration: none;
}
.mega-link:hover { background: var(--light); }
.mega-link-num { font-size: .75rem; color: var(--orange); font-weight: 600; letter-spacing: .08em; }
.mega-link-title { font-size: .9rem; font-weight: 600; color: var(--dark); }
.mega-link-desc { font-size: .78rem; color: var(--gray); line-height: 1.4; }
.mega-link.active-area .mega-link-title { color: var(--orange); }

/* Nav right controls */
.nav-controls {
  display: flex; align-items: center; gap: 12px;
  margin-left: 20px; flex-shrink: 0;
}

/* Mobile hamburger */
.nav-burger {
  display: none;
  flex-direction: column; gap: 5px;
  width: 28px; cursor: pointer; padding: 4px;
}
.nav-burger span {
  display: block; height: 2px; width: 100%;
  background: var(--dark); border-radius: 2px;
  transition: var(--transition);
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0; bottom: 0;
  background: var(--white);
  overflow-y: auto;
  z-index: 999;
  padding: 24px;
}
.nav-mobile.open { display: block; animation: mobileIn .25s ease; }
@keyframes mobileIn {
  from { opacity:0; transform: translateY(-8px); }
  to   { opacity:1; transform: translateY(0); }
}
.nav-mobile a {
  display: block; padding: 14px 0;
  font-size: 1.1rem; font-weight: 500; color: var(--dark);
  border-bottom: 1px solid var(--light-2);
}
.nav-mobile a:hover { color: var(--orange); }
.nav-mobile .mobile-area-links { padding-left: 16px; }
.nav-mobile .mobile-area-links a { font-size: .95rem; color: var(--gray); }
.nav-mobile .mobile-controls { display: flex; flex-direction: column; gap: 12px; padding-top: 24px; }

@media(max-width:960px) {
  .nav-links, .nav-controls { display: none; }
  .nav-burger { display: flex; margin-left: auto; }
}

/* ══════════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════════ */
#footer {
  background: var(--dark);
  color: rgba(255,255,255,.65);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 220px 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-logo-text {
  font-family: var(--font-heading);
  font-size: 1.6rem; font-weight: 800;
  color: var(--white); letter-spacing: -.04em;
  margin-bottom: 12px;
}
.footer-logo-text span { color: var(--orange); }
.footer-tagline { font-size: .82rem; color: rgba(255,255,255,.45); line-height: 1.5; }
.footer-col h5 { color: var(--white); margin-bottom: 16px; font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; }
.footer-col a, .footer-col p { display: block; font-size: .85rem; line-height: 2; color: rgba(255,255,255,.55); transition: color var(--transition-fast); }
.footer-col a:hover { color: var(--orange); }
.footer-col svg { width: 14px; height: 14px; vertical-align: middle; margin-right: 6px; }
.footer-bottom {
  display: flex; align-items: center; flex-wrap: wrap; gap: 16px;
  padding-top: 28px; justify-content: space-between;
}
.footer-bottom p { font-size: .78rem; color: rgba(255,255,255,.3); }
.footer-legal { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-legal a { font-size: .78rem; color: rgba(255,255,255,.35); transition: color var(--transition-fast); }
.footer-legal a:hover { color: var(--white); }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px;
  background: rgba(255,255,255,.08);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.6);
  transition: var(--transition-fast);
}
.footer-social a:hover { background: var(--orange); color: var(--white); }
.footer-social svg { width: 16px; height: 16px; }

@media(max-width:768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
}

/* ══════════════════════════════════════════════════════════════
   AREA NAV BAR (horizontal strip between hero and content)
   ══════════════════════════════════════════════════════════════ */
.area-nav-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky; top: var(--nav-h); z-index: 90;
  overflow-x: auto;
}
.area-nav-bar::-webkit-scrollbar { display: none; }
.area-nav-inner {
  display: flex; align-items: stretch;
  max-width: var(--container);
  margin: 0 auto; padding: 0 32px;
  min-width: max-content;
}
.area-nav-item {
  display: flex; flex-direction: column; gap: 2px;
  padding: 16px 24px;
  border-bottom: 2px solid transparent;
  text-decoration: none;
  transition: var(--transition-fast);
  flex-shrink: 0;
}
.area-nav-item:hover { border-bottom-color: rgba(232,129,42,.3); }
.area-nav-item.active { border-bottom-color: var(--orange); }
.area-nav-item .area-num { font-size: .7rem; color: var(--orange); font-weight: 600; letter-spacing: .08em; }
.area-nav-item .area-name { font-size: .82rem; font-weight: 600; color: var(--gray); white-space: nowrap; }
.area-nav-item.active .area-name { color: var(--orange); }

/* ══════════════════════════════════════════════════════════════
   SERVICE CARDS (¿Qué hacemos?)
   ══════════════════════════════════════════════════════════════ */
.service-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  background: var(--white);
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--orange);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.service-card:hover::before { transform: scaleX(1); }
.service-card-num {
  font-size: .75rem; font-weight: 700; color: var(--orange);
  letter-spacing: .08em; margin-bottom: 12px; display: block;
}
.service-card-icon {
  width: 40px; height: 40px; margin-bottom: 16px; color: var(--orange);
}
.service-card-icon svg { width: 100%; height: 100%; }
.service-card h4 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; color: var(--dark); }
.service-card p { font-size: .85rem; color: var(--gray); line-height: 1.65; }

/* ══════════════════════════════════════════════════════════════
   HERO – Page areas
   ══════════════════════════════════════════════════════════════ */
.page-hero {
  position: relative;
  height: min(520px, 70vh);
  margin-top: var(--nav-h);
  overflow: hidden;
  display: flex; align-items: flex-end;
}
.page-hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
}
.page-hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.72) 40%, rgba(0,0,0,.3) 100%);
}
.page-hero-content {
  position: relative; z-index: 2;
  padding: 56px;
  max-width: 640px;
  color: var(--white);
}
.page-hero-content .label { color: var(--orange); margin-bottom: 12px; }
.page-hero-content h1 { color: var(--white); margin-bottom: 16px; }
.page-hero-content p { color: rgba(255,255,255,.75); margin-bottom: 28px; font-size: 1.1rem; }

.page-hero-words {
  position: absolute; right: 56px; bottom: 56px; z-index: 2;
  text-align: right;
  display: flex; flex-direction: column; gap: 4px;
}
.page-hero-words span {
  font-family: var(--font-heading);
  font-size: .8rem; font-weight: 700;
  color: rgba(255,255,255,.35);
  letter-spacing: .14em; text-transform: uppercase;
}
.page-hero-words span.highlight { color: var(--orange); }

@media(max-width:768px) {
  .page-hero { height: auto; min-height: 380px; }
  .page-hero-content { padding: 40px 20px; }
  .page-hero-words { display: none; }
}

/* ══════════════════════════════════════════════════════════════
   CONCEPT BLOCK (split 2-col with image)
   ══════════════════════════════════════════════════════════════ */
.concept-block { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0; align-items: center; }
.concept-block .concept-text { padding: 64px 48px; }
.concept-block .concept-image { height: 480px; background-size: cover; background-position: center; }
.concept-block .concept-features { padding: 40px 32px; background: var(--light); }
.concept-feature {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.concept-feature:last-child { border-bottom: none; }
.concept-feature svg { width: 28px; height: 28px; color: var(--orange); flex-shrink: 0; margin-top: 2px; }
.concept-feature h5 { font-size: .9rem; font-weight: 600; color: var(--dark); margin-bottom: 2px; }
.concept-feature p { font-size: .82rem; color: var(--gray); }

@media(max-width:1024px) {
  .concept-block { grid-template-columns: 1fr; }
  .concept-block .concept-image { height: 300px; }
  .concept-block .concept-text { padding: 48px 32px; }
}
@media(max-width:768px) {
  .concept-block .concept-text { padding: 40px 20px; }
  .concept-block .concept-features { padding: 32px 20px; }
}

/* ══════════════════════════════════════════════════════════════
   GASIN ONE TEASER block
   ══════════════════════════════════════════════════════════════ */
.gasin-one-teaser {
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center; gap: 0;
  background: var(--light);
}
.gasin-one-teaser .teaser-image { height: 420px; overflow: hidden; }
.gasin-one-teaser .teaser-image img { width: 100%; height: 100%; object-fit: cover; }
.gasin-one-teaser .teaser-content { padding: 56px 64px; }
.gasin-one-teaser .teaser-content h3 { font-size: 1.6rem; margin-bottom: 16px; }

@media(max-width:768px) {
  .gasin-one-teaser { grid-template-columns: 1fr; }
  .gasin-one-teaser .teaser-content { padding: 40px 20px; }
  .gasin-one-teaser .teaser-image { height: 280px; }
}

/* ══════════════════════════════════════════════════════════════
   CTA CLOSE SECTION (dark with Madrid image)
   ══════════════════════════════════════════════════════════════ */
.cta-close {
  position: relative; padding: 100px 0;
  background-size: cover; background-position: center;
  text-align: center; overflow: hidden;
}
.cta-close::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,.6) 0%, rgba(0,0,0,.75) 100%);
}
.cta-close .container { position: relative; z-index: 2; }
.cta-close h2 { color: var(--white); margin-bottom: 8px; }
.cta-close .tagline {
  font-size: .85rem; color: var(--orange); letter-spacing: .1em;
  text-transform: uppercase; font-weight: 600; margin-bottom: 32px;
}
.cta-close p { color: rgba(255,255,255,.7); margin-bottom: 32px; }

/* ══════════════════════════════════════════════════════════════
   NEXT AREA BUTTON (floating)
   ══════════════════════════════════════════════════════════════ */
.next-area-btn {
  position: fixed;
  bottom: 32px; right: 96px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  display: flex; align-items: center; gap: 12px;
  box-shadow: var(--shadow);
  z-index: 900;
  text-decoration: none;
  transition: var(--transition);
  opacity: 0; pointer-events: none;
  transform: translateY(8px);
}
.next-area-btn.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.next-area-btn:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.next-area-btn .next-inner { display: flex; flex-direction: column; }
.next-area-btn .next-label { font-size: .7rem; color: var(--gray); letter-spacing: .06em; text-transform: uppercase; }
.next-area-btn .next-title { font-size: .85rem; font-weight: 600; color: var(--dark); }
.next-area-btn .next-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--orange); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.next-area-btn .next-icon svg { width: 16px; height: 16px; }

@media(max-width:768px) { .next-area-btn { display: none; } }

/* ══════════════════════════════════════════════════════════════
   VALUES CARDS
   ══════════════════════════════════════════════════════════════ */
.value-card {
  text-align: center; padding: 40px 24px;
  border: 1px solid var(--border); border-radius: var(--radius);
  transition: var(--transition);
}
.value-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.value-card svg { width: 48px; height: 48px; color: var(--orange); margin: 0 auto 16px; }
.value-card h4 { font-size: 1.1rem; margin-bottom: 8px; }
.value-card p { font-size: .875rem; }

/* ══════════════════════════════════════════════════════════════
   PROCESS STEPS
   ══════════════════════════════════════════════════════════════ */
.steps-row {
  display: flex; align-items: center; gap: 0;
  overflow-x: auto; padding: 24px 0;
}
.steps-row::-webkit-scrollbar { display: none; }
.step-item {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; padding: 0 24px; flex: 1; min-width: 120px;
  position: relative;
}
.step-item:not(:last-child)::after {
  content: '→';
  position: absolute; right: -4px; top: 20px;
  color: var(--orange); font-size: 1.2rem;
}
.step-icon {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--light); border: 2px solid var(--orange);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px; color: var(--orange);
}
.step-icon svg { width: 22px; height: 22px; }
.step-num { font-size: .7rem; color: var(--orange); font-weight: 700; letter-spacing: .1em; margin-bottom: 4px; }
.step-title { font-size: .85rem; font-weight: 600; color: var(--dark); }