/* ===========================================
   GESTELEARN — Stylesheet
   =========================================== */

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

/* Variables */
:root {
  --cream:       #f0e9da;
  --dark:        #272424;
  --dark-deep:   #1e1b1b;
  --cream-faint: rgba(240, 233, 218, 0.06);
  --cream-dim:   rgba(240, 233, 218, 0.45);
  --dark-line:   rgba(39, 36, 36, 0.12);

  --font-display: 'Norwester', 'Bebas Neue', 'Impact', sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;

  --nav-h: 72px;
  --pad-x: clamp(1.5rem, 6vw, 5rem);
  --max-w: 1280px;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--dark);
  color: var(--cream);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; }
ul  { list-style: none; }
a   { color: inherit; }

/* ===== UTILITIES ===== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.45;
  margin-bottom: 1.25rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 5vw, 5rem);
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.title-nav {
  font-family: var(--font-display);
  font-size: clamp(.75rem, 1,5vw, 5rem);
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.section-header {
  margin-bottom: clamp(3rem, 7vw, 6rem);
}

/* Scroll reveal */
.fade-up {
  opacity: 0;
  transform: translateY(48px);
  transition:
    opacity  0.85s var(--ease-out-expo),
    transform 0.85s var(--ease-out-expo);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================================
   NAVIGATION
   =========================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  transition: background 0.4s ease, border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(30, 27, 27, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: rgba(240, 233, 218, 0.07);
}

.nav__container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav__logo img {
  height: 30px;
  width: auto;
}

.nav__menu {
  display: flex;
  gap: 2.5rem;
  margin-left: auto;
}

.nav__link {
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  opacity: 0.55;
  transition: opacity 0.2s;
}
.nav__link:hover { opacity: 1; }

.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.35rem;
  background: var(--cream);
  color: var(--dark);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background 0.25s, color 0.25s, outline 0.25s;
  margin-left: 0.5rem;
  flex-shrink: 0;
}
.nav__cta:hover {
  background: transparent;
  color: var(--cream);
  outline: 1px solid var(--cream);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--cream);
  transition: transform 0.3s var(--ease-out-expo), opacity 0.3s;
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ===========================================
   HERO
   =========================================== */
.hero {
  min-height: 100svh;
  background: var(--dark);
  background-image:
    linear-gradient(rgba(240, 233, 218, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(240, 233, 218, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  display: flex;
  position: relative;
  overflow: hidden;
}

/* Noise overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: calc(var(--nav-h) + 4rem) var(--pad-x) 4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
}

/* Brand row */
.hero__brand {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.hero__icon {
  width: clamp(52px, 6vw, 80px);
  height: auto;
  opacity: 0;
  transform: scale(0.85) rotate(-8deg);
  transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
  transition-delay: 0.05s;
}
.hero.loaded .hero__icon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.hero__tagline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.7s ease;
  transition-delay: 0.3s;
}
.hero.loaded .hero__tagline { opacity: 0.35; }
.hero__tagline .dot { opacity: 0.4; }

/* Headline */
.hero__headline {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero__line {
  overflow: hidden;
  line-height: 0.92;
}
.hero__line span {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(3.75rem, 9.5vw, 10.5rem);
  text-transform: uppercase;
  letter-spacing: -0.015em;
  color: var(--cream);
  transform: translateY(105%);
  transition: transform 0.95s var(--ease-out-expo);
  will-change: transform;
}

/* Line reveal delays */
.hero__line:nth-child(1) span { transition-delay: 0.10s; }
.hero__line:nth-child(2) span { transition-delay: 0.20s; }
.hero__line:nth-child(3) span { transition-delay: 0.30s; }
.hero__line:nth-child(4) span { transition-delay: 0.40s; }

.hero.loaded .hero__line span { transform: translateY(0); }

/* Outline accent line */
.hero__line--outline span {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--cream);
}

/* Hero footer row */
.hero__footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(240, 233, 218, 0.1);
}

.hero__sub {
  max-width: 480px;
  font-size: 0.875rem;
  line-height: 1.6;
  opacity: 0;
  transition: opacity 0.8s ease;
  transition-delay: 0.65s;
}
.hero.loaded .hero__sub { opacity: 0.5; }

.hero__scroll {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
  transition-delay: 0.85s;
}
.hero.loaded .hero__scroll { opacity: 0.35; }

.hero__scroll span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 50px;
  height: 1px;
  background: var(--cream);
  transform-origin: left center;
  animation: scrollLine 2.5s var(--ease-out-expo) infinite 1.5s;
}

@keyframes scrollLine {
  0%   { transform: scaleX(0); }
  50%  { transform: scaleX(1); }
  100% { transform: scaleX(0); transform-origin: right center; }
}

/* ===========================================
   MARQUEE
   =========================================== */
.marquee-wrap {
  background: var(--cream);
  color: var(--dark);
  overflow: hidden;
  padding: 1rem 0;
  border-top: 1px solid rgba(39, 36, 36, 0.12);
  border-bottom: 1px solid rgba(39, 36, 36, 0.12);
}

.marquee-track {
  display: flex;
  gap: 2rem;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
  width: max-content;
}

.marquee-track span {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.marquee-track .mx {
  opacity: 0.35;
  font-size: 0.75rem;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ===========================================
   ESPECIALIDADES
   =========================================== */
.especialidades {
  background: var(--cream);
  color: var(--dark);
  padding: clamp(5rem, 10vw, 9rem) 0;
}

.especialidades .section-tag  { color: var(--dark); opacity: 0.4; }
.especialidades .section-title { color: var(--dark); }

.esp-list {
  display: flex;
  flex-direction: column;
}

.esp-item {
  display: grid;
  grid-template-columns: 72px 1fr 1fr;
  gap: 2rem;
  padding: clamp(1.75rem, 3.5vw, 2.75rem) 0;
  border-top: 1px solid var(--dark-line);
  align-items: start;
}
.esp-item:last-child {
  border-bottom: 1px solid var(--dark-line);
}

.esp-item__num {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  opacity: 0.25;
  padding-top: 3px;
}

.esp-item__title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.1;
  color: var(--dark);
}

.esp-item__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  opacity: 0.65;
  color: var(--dark);
  max-width: 520px;
}

/* ===========================================
   PROYECTOS
   =========================================== */
.proyectos {
  background: var(--dark);
  color: var(--cream);
  padding: clamp(5rem, 10vw, 9rem) 0;
}

.proyectos__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5px;
  background: rgba(240, 233, 218, 0.08);
}

.project-card {
  background: var(--dark);
  overflow: hidden;
  transition: background 0.35s ease;
}
.project-card:hover { background: var(--dark-deep); }

.project-card__link-wrap {
  display: block;
  text-decoration: none;
  color: var(--cream);
}

.project-card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.project-card__placeholder {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(240, 233, 218, 0.025) 0px,
      rgba(240, 233, 218, 0.025) 1px,
      transparent 1px,
      transparent 16px
    );
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.7s var(--ease-out-expo);
}
.project-card:hover .project-card__placeholder { transform: scale(1.04); }

.project-card__placeholder span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.2;
}

.project-card__body {
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.project-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.project-card__tag {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.4;
}

.project-card__arrow {
  font-size: 1.1rem;
  opacity: 0.35;
  transition: transform 0.3s var(--ease-out-expo), opacity 0.3s;
}
.project-card:hover .project-card__arrow {
  transform: translate(4px, -4px);
  opacity: 1;
}

.project-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.5rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1;
  margin-bottom: 1rem;
}

.project-card__desc {
  font-size: 0.875rem;
  line-height: 1.65;
  opacity: 0.55;
}

/* ===========================================
   CONTACTO
   =========================================== */
.contacto {
  background: var(--cream);
  color: var(--dark);
  padding: clamp(5rem, 10vw, 9rem) 0;
}

.contacto .section-tag  { opacity: 0.4; }
.contacto .section-title {
  color: var(--dark);
  margin-bottom: 1.25rem;
}

.contacto__inner {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.contacto__intro {
  font-size: 0.9rem;
  line-height: 1.65;
  opacity: 0.6;
  margin-bottom: 2.5rem;
  max-width: 380px;
}

.contacto__datos {
  display: flex;
  flex-direction: column;
}

.contacto__dato {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--dark-line);
  text-decoration: none;
  color: var(--dark);
  transition: padding-left 0.35s var(--ease-out-expo);
}
.contacto__dato:first-child { border-top: 1px solid var(--dark-line); }
.contacto__dato:hover { padding-left: 0.6rem; }

.contacto__dato-label {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.4;
}
.contacto__dato-value {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.65rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  transition: opacity 0.2s;
}
.contacto__dato:hover .contacto__dato-value { opacity: 0.7; }

/* Tally placeholder */
.tally-placeholder {
  background: var(--dark);
  min-height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(240, 233, 218, 0.15);
}
.tally-placeholder__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  color: var(--cream);
  text-align: center;
  padding: 2rem;
}
.tally-placeholder__inner svg { opacity: 0.25; margin-bottom: 0.25rem; }
.tally-placeholder__inner p {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.4;
}
.tally-placeholder__inner small {
  font-size: 0.7rem;
  opacity: 0.25;
  letter-spacing: 0.08em;
}

/* ===========================================
   FOOTER
   =========================================== */
.footer {
  background: var(--dark-deep);
  color: var(--cream);
  padding: 2.5rem 0;
  border-top: 1px solid rgba(240, 233, 218, 0.06);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.footer__logo-link { display: inline-flex; }
.footer__logo {
  height: 26px;
  width: auto;
  opacity: 0.85;
}
.footer__legal {
  font-size: 0.75rem;
  opacity: 0.35;
  letter-spacing: 0.04em;
}

.footer__nav {
  display: flex;
  gap: 1.75rem;
}
.footer__link {
  text-decoration: none;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.35;
  transition: opacity 0.2s;
}
.footer__link:hover { opacity: 0.85; }

.footer__copy {
  font-size: 0.72rem;
  opacity: 0.25;
  letter-spacing: 0.03em;
}

/* ===========================================
   RESPONSIVE
   =========================================== */

/* Tablet */
@media (max-width: 1024px) {
  .esp-item {
    grid-template-columns: 60px 1fr;
  }
  .esp-item__desc {
    grid-column: 2;
    max-width: none;
  }
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__menu {
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: var(--dark-deep);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    transform: translateX(100%);
    transition: transform 0.5s var(--ease-out-expo);
    z-index: 199;
  }
  .nav__menu.open {
    transform: translateX(0);
  }
  .nav__menu .nav__link {
    font-size: 1.1rem;
    opacity: 0.8;
    letter-spacing: 0.12em;
  }
  .nav__cta { display: none; }
  .nav__hamburger { display: flex; }

  .hero__footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .esp-item {
    grid-template-columns: 52px 1fr;
    gap: 1rem;
  }
  .esp-item__desc { grid-column: 2; }

  .proyectos__grid {
    grid-template-columns: 1fr;
  }

  .contacto__inner {
    grid-template-columns: 1fr;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .hero__tagline { display: none; }

  .esp-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .esp-item__num { font-size: 0.85rem; }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }
  .footer__brand {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}