/* ============================================================
   GTI AI Labs — gtiailabs.com
   Tokens: branding/gti-design-system/project/colors_and_type.css
   ============================================================ */

:root {
  /* Brand greens */
  --gti-primary:        #4F6F52;
  --gti-primary-dark:   #3A5540;
  --gti-primary-light:  #86A789;

  /* Warm neutrals */
  --gti-secondary:      #F5EFE6;
  --gti-accent:         #D8C4B6;

  /* Core neutrals */
  --gti-dark:           #1A1A1A;
  --gti-light:          #FFFFFF;
  --gti-gray:           #F5F5F5;
  --gti-gray-dark:      #E0E0E0;
  --gti-text:           #333333;
  --gti-text-muted:     #5A7A5C;

  /* Semantic */
  --gti-danger:         #E74C3C;
  --gti-warning:        #F39C12;
  --gti-success:        #2ECC71;

  /* Typography */
  --font-main: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --fs-hero: 4rem;
  --fs-h2:   2.8rem;
  --fs-h3:   2rem;
  --fs-h4:   1.4rem;
  --fs-lead: 1.3rem;
  --fs-body: 1.1rem;
  --fs-sm:   0.95rem;
  --fs-tag:  0.8rem;

  /* Shape */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  --shadow-sm: 0 4px 10px rgba(0,0,0,.06);
  --shadow-md: 0 10px 25px rgba(0,0,0,.10);
  --shadow-lg: 0 18px 42px rgba(0,0,0,.18);
  --shadow-primary: 0 15px 30px rgba(79,111,82,.30);

  --transition: all .4s cubic-bezier(.175,.885,.32,1.275);

  --container-max: 1280px;
  --section-pad: 6rem;

  /* Dot pattern for dark sections */
  --dots: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28'%3E%3Ccircle cx='3' cy='3' r='1.6' fill='%23ffffff' fill-opacity='0.10'/%3E%3C/svg%3E");
}

/* ============ Reset & base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font-main);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--gti-dark);
  background: var(--gti-light);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }

h1, h2, h3, h4 { font-weight: 800; line-height: 1.2; }

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

/* ============ Tag / eyebrow ============ */
.tag {
  display: inline-block;
  padding: .5rem 1.2rem;
  background: var(--gti-primary-light);
  color: var(--gti-light);
  border-radius: var(--radius-pill);
  font-size: var(--fs-tag);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 1.25rem;
}
.tag-light { background: rgba(255,255,255,.16); }

/* ============ Buttons ============ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition);
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 30%, rgba(255,255,255,.2) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform .6s ease;
}
.btn:hover::before { transform: translateX(100%); }
.btn:hover { transform: translateY(-3px); }

.btn-primary { background: var(--gti-primary); color: var(--gti-light); }
.btn-primary:hover { background: var(--gti-primary-dark); box-shadow: var(--shadow-primary); }

.btn-light { background: var(--gti-light); color: var(--gti-primary); }
.btn-light:hover { box-shadow: var(--shadow-lg); }

.btn-outline-light {
  background: transparent;
  color: var(--gti-light);
  border: 2px solid var(--gti-light);
}
.btn-outline-light:hover { background: var(--gti-light); color: var(--gti-primary); }

.btn-sm { padding: .6rem 1.3rem; font-size: var(--fs-sm); }
.btn-block { width: 100%; justify-content: center; }

/* ============ Navbar ============ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.1rem;
  transition: var(--transition);
}
.navbar.scrolled .navbar-inner { padding-block: .6rem; }
.navbar.scrolled { box-shadow: var(--shadow-md); }

.navbar-brand { display: flex; align-items: center; gap: .7rem; }
.navbar-logo { height: 44px; width: auto; transition: var(--transition); }
.navbar-brand:hover .navbar-logo { transform: rotate(5deg); }
.navbar-sub {
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .18em;
  color: var(--gti-primary);
  border-left: 2px solid var(--gti-gray-dark);
  padding-left: .7rem;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  font-size: var(--fs-sm);
  font-weight: 500;
}
.navbar-menu > li > a { color: var(--gti-text); }
.navbar-menu > li > a:hover { color: var(--gti-primary); }
.navbar-menu > li > a i { font-size: .7rem; margin-left: .2rem; }

.has-dropdown { position: relative; }
.dropdown {
  position: absolute;
  top: calc(100% + .8rem);
  left: 50%;
  translate: -50% 0;
  min-width: 240px;
  background: var(--gti-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: .6rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: var(--transition);
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown a {
  display: block;
  padding: .55rem .9rem;
  border-radius: var(--radius-sm);
  color: var(--gti-text);
}
.dropdown a:hover { background: var(--gti-secondary); color: var(--gti-primary); }

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--gti-primary);
  cursor: pointer;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background:
    var(--dots),
    linear-gradient(160deg, rgba(42,63,46,.90) 0%, rgba(79,111,82,.78) 55%, rgba(93,127,96,.62) 100%),
    url('../assets/hero-datacenter.webp') center / cover no-repeat var(--gti-primary-dark);
  color: var(--gti-light);
  padding-top: 84px;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  width: 560px; height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(134,167,137,.35) 0%, transparent 70%);
  filter: blur(60px);
  right: -140px; bottom: -180px;
  animation: floatOrb 12s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes floatOrb {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(-60px,-50px) scale(1.15); }
}

.hero-content { max-width: 820px; position: relative; z-index: 1; }
.hero-tag { background: rgba(255,255,255,.16); }
.hero-title {
  font-size: var(--fs-hero);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  text-shadow: 0 6px 30px rgba(0,0,0,.35);
  animation: heroIn .8s cubic-bezier(.175,.885,.32,1.275) both;
}
.hero-subtitle {
  font-size: var(--fs-lead);
  font-weight: 300;
  max-width: 62ch;
  margin-bottom: 2.5rem;
  opacity: .95;
  animation: heroIn .8s .15s cubic-bezier(.175,.885,.32,1.275) both;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; animation: heroIn .8s .3s cubic-bezier(.175,.885,.32,1.275) both; }
@keyframes heroIn {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============ Sections ============ */
.section { padding-block: var(--section-pad); }
.section-cream { background: var(--gti-secondary); }
.section-warm { background: linear-gradient(135deg, #F5EFE6 0%, #EDE0D4 55%, #e0d5cb 100%); }
.section-dark {
  background: var(--dots), var(--gti-primary);
  color: var(--gti-light);
}
.section-dark .section-title { color: var(--gti-light); }
.section-dark .section-subtitle { color: rgba(255,255,255,.85); }

.section-head { text-align: center; max-width: 860px; margin: 0 auto 3.5rem; }
.section-title { font-size: var(--fs-h2); margin-bottom: 1.2rem; }
.section-subtitle { font-size: var(--fs-body); color: var(--gti-text); max-width: 70ch; margin-inline: auto; }

.section-note { text-align: center; margin-top: 2.5rem; color: var(--gti-text); }
.section-note a { color: var(--gti-primary); font-weight: 600; }
.section-note a:hover { color: var(--gti-primary-dark); }

/* ============ Grids ============ */
.grid { display: grid; gap: 1.5rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* ============ Cards ============ */
.card {
  background: var(--gti-light);
  border: 1px solid var(--gti-gray-dark);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

.card i {
  font-size: 1.8rem;
  color: var(--gti-primary);
  margin-bottom: 1rem;
  display: inline-block;
}
.card h4 { font-size: 1.15rem; margin-bottom: .6rem; }
.card p { font-size: var(--fs-sm); color: var(--gti-text); }

.card-solution { display: block; }
.card-solution:hover { border-color: var(--gti-primary-light); transform: translateY(-8px); box-shadow: var(--shadow-md); }
.card-solution:hover i { transform: scale(1.12); }
.card-solution i { transition: var(--transition); }

.card-dark {
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.14);
  backdrop-filter: blur(2px) saturate(1.2);
}
.card-dark i { color: var(--gti-light); }
.card-dark h4 { color: var(--gti-light); }
.card-dark p { color: rgba(255,255,255,.82); }
.card-dark:hover { background: rgba(255,255,255,.12); }

.card-industry { text-align: center; }

/* ============ Nosotros ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 3.5rem;
  align-items: center;
}
.about-copy p { margin-bottom: 1.4rem; color: var(--gti-text); }
.about-copy strong { color: var(--gti-primary); }

.about-visual { margin: 0; }
.about-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  height: auto;
  transition: var(--transition);
}
.about-visual:hover img { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.stats-row { grid-template-columns: repeat(4, 1fr); margin-top: 3rem; }
.stat-card {
  background: var(--gti-secondary);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.4rem;
  text-align: center;
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.stat-number {
  display: block;
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--gti-primary);
  line-height: 1.1;
}
.stat-label { font-size: var(--fs-sm); color: var(--gti-text); }

/* ============ Planes financieros ============ */
.plans-grid { align-items: stretch; }
.card-plan { position: relative; padding: 2.2rem; }
.card-plan h3 { font-size: 1.4rem; color: var(--gti-primary); margin-bottom: 1.4rem; }
.plan-list li {
  display: flex;
  gap: .7rem;
  align-items: flex-start;
  font-size: var(--fs-sm);
  color: var(--gti-text);
  margin-bottom: .9rem;
}
.plan-list i { color: var(--gti-success); font-size: 1rem; margin: .2rem 0 0; }
.card-plan-featured {
  border: 2px solid var(--gti-primary);
  box-shadow: var(--shadow-md);
}
.plan-ribbon {
  position: absolute;
  top: -0.9rem;
  left: 50%;
  translate: -50% 0;
  background: var(--gti-primary);
  color: var(--gti-light);
  font-size: var(--fs-tag);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: .35rem 1.1rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

/* ============ Steps ============ */
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
  counter-reset: step;
}
.step {
  text-align: center;
  padding: 1.5rem 1rem;
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: var(--gti-primary);
  color: var(--gti-light);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 1.1rem;
  box-shadow: var(--shadow-primary);
  transition: var(--transition);
}
.step:hover .step-number { transform: translateY(-5px) scale(1.08); }
.step h4 { margin-bottom: .5rem; }
.step p { font-size: var(--fs-sm); color: var(--gti-text); }

/* ============ Partners ============ */
.partner-featured { text-align: center; margin-bottom: 1.8rem; }
.partner-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .9rem;
  max-width: 900px;
  margin-inline: auto;
}
.partner-badge {
  display: inline-block;
  padding: .7rem 1.5rem;
  background: var(--gti-gray);
  border: 1px solid var(--gti-gray-dark);
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--gti-text);
  transition: var(--transition);
}
.partner-badge:hover {
  transform: translateY(-4px);
  border-color: var(--gti-primary-light);
  color: var(--gti-primary);
  box-shadow: var(--shadow-sm);
}
.partner-badge-lg {
  font-size: 1.3rem;
  font-weight: 800;
  padding: 1.1rem 2.6rem;
  background: var(--gti-primary);
  border-color: var(--gti-primary);
  color: var(--gti-light);
  box-shadow: var(--shadow-primary);
}
.partner-badge-lg:hover { color: var(--gti-light); background: var(--gti-primary-dark); }

/* ============ Grupo GTI ============ */
.group-card {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 3rem;
  align-items: center;
  background: var(--gti-light);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  box-shadow: var(--shadow-md);
}
.group-copy p { color: var(--gti-text); margin-bottom: 2rem; }
.group-copy strong { color: var(--gti-primary); }
.group-visual { margin: 0; text-align: center; }
.group-visual img { height: auto; margin-inline: auto; transition: var(--transition); }
.group-visual:hover img { transform: translateY(-6px); }
.group-visual figcaption {
  margin-top: .8rem;
  font-size: var(--fs-tag);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--gti-text-muted);
}

/* ============ CTA / Contacto ============ */
.section-cta {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(42,63,46,.94) 0%, rgba(58,85,64,.88) 60%, rgba(79,111,82,.84) 100%),
    url('../assets/cta-fiber.webp') center / cover no-repeat var(--gti-primary);
}
.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3.5rem;
  align-items: center;
}
.cta-copy p { color: rgba(255,255,255,.9); margin-bottom: 1.6rem; }
.cta-channels p { display: flex; align-items: center; gap: .7rem; margin-bottom: .7rem; font-weight: 500; }
.cta-channels a:hover { color: var(--gti-accent); }

.cta-form {
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.cta-form input,
.cta-form select,
.cta-form textarea {
  width: 100%;
  padding: .9rem 1.1rem;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.92);
  font-family: var(--font-main);
  font-size: var(--fs-sm);
  color: var(--gti-dark);
  transition: var(--transition);
}
.cta-form input:focus,
.cta-form select:focus,
.cta-form textarea:focus {
  outline: none;
  border-color: var(--gti-primary-light);
  background: var(--gti-light);
  box-shadow: 0 0 0 3px rgba(134,167,137,.35);
}
.cta-form textarea { resize: vertical; }

/* ============ Footer ============ */
.footer {
  background: var(--gti-secondary);
  padding-top: 4.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}
.footer-logo { height: 52px; width: auto; margin-bottom: 1.1rem; }
.footer-brand p { font-size: var(--fs-sm); color: var(--gti-text); max-width: 32ch; }
.footer-col h4 { font-size: 1rem; margin-bottom: 1.1rem; color: var(--gti-primary-dark); }
.footer-col li { margin-bottom: .6rem; }
.footer-col a {
  font-size: var(--fs-sm);
  color: var(--gti-text);
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}
.footer-col a i { font-size: .7rem; color: var(--gti-primary-light); }
.footer-col a:hover { color: var(--gti-primary); transform: translateX(3px); }
.footer-bottom {
  border-top: 1px solid var(--gti-accent);
  padding-block: 1.4rem;
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--gti-text);
}

/* ============ Reveal animations ============ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s cubic-bezier(.175,.885,.32,1.275), transform .7s cubic-bezier(.175,.885,.32,1.275);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ============ Responsive ============ */
@media (max-width: 1080px) {
  :root { --fs-hero: 3.2rem; --fs-h2: 2.3rem; --section-pad: 4.5rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .navbar-toggle { display: block; }
  .navbar-menu {
    position: fixed;
    top: 0; right: 0;
    height: 100dvh;
    width: min(320px, 84vw);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--gti-light);
    box-shadow: var(--shadow-lg);
    padding: 5.5rem 1.6rem 2rem;
    transform: translateX(100%);
    transition: transform .4s cubic-bezier(.4,0,.2,1);
    overflow-y: auto;
  }
  .navbar-menu.open { transform: translateX(0); }
  .navbar-menu > li { width: 100%; }
  .navbar-menu > li > a { display: block; padding: .8rem 0; font-size: 1.05rem; }
  .dropdown {
    position: static;
    translate: 0 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding: 0 0 .5rem .9rem;
    display: none;
  }
  .has-dropdown.open .dropdown { display: block; }
  .navbar-cta { margin-top: 1rem; }

  .about-grid, .cta-grid, .group-card { grid-template-columns: 1fr; }
  .group-visual { order: -1; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  :root { --fs-hero: 2.4rem; --fs-h2: 1.9rem; --fs-lead: 1.1rem; --section-pad: 3.5rem; }
  .container { padding-inline: 1.2rem; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { min-height: 80vh; }
  .group-card { padding: 2rem; }
}