/* ══════════════════════════════════════
   RESET & BASE
══════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
/* ═══VARIABLES DE COLORES════*/
:root {
  --black:      #0d0d0d;
  --black-2:    #111111;
  --white:      #ffffff;
  --gray:       #888888;
  --gray-light: #cccccc;
  --gold:       #c9aa71;
  --font:       'Helvetica Neue', Arial, sans-serif;
  --nav-h:      64px;
  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}
/* CUERPO DE LA PAGINA */

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; height: 100%; object-fit: cover; }
ul { list-style: none; }

/* ══════════════════════════════════════
   NAVEGACION
══════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  transition: background var(--transition);
}

#navbar.scrolled {
  background: rgba(13, 13, 13, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.logo {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

/* BOTON HAMBURGUESA A LA ESQUINA SUPERIOR DERECHA */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 210;
}
/* ANIMACION DE BOTON HAMBURGUESA */
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
  transform-origin: center;
}
/* ABRIR BOTON HAMBURGUESA */
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ══════════════════════════════════════
   MENU LATERAL
══════════════════════════════════════ */
/* CAPA SEMITRANSPARENTE QUE CUBRE TODA LA PANTALLA*/

.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 299;
  background: rgba(0,0,0,0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

/* EL MENU PERMITE RECIBIR CLICKS  */
.menu-overlay.active {
  opacity: 1;
  pointer-events: all;
}
/*  CONTENEDOR DEL MENU  */
.menu-drawer {
  position: fixed;
  top: 0; right: 0;
  z-index: 300;
  width: min(380px, 85vw);
  height: 100vh;
  background: var(--black-2);
  border-left: 1px solid rgba(255,255,255,0.07);
  padding: 2.5rem 2.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition);
}
/* EL PANEL SE DESLIZA HACIA LA IZQUIERDA Y APARECE */
.menu-drawer.open {
  transform: translateX(0);
}
/*   BOTON CERRAR */
.menu-close {
  background: none;
  border: none;
  color: var(--gray);
  font-size: 1.2rem;
  cursor: pointer;
  align-self: flex-end;
  margin-bottom: 3rem;
  transition: color 0.2s;
}
/*   AL PASAR EL MOUSE CAMBIA DE COLOR */
.menu-close:hover { color: var(--white); }
/*   ACOMODA LOS ENLACES EN FORMA VERTICAL */
.menu-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex: 1;
}
/*   ENLACES */
.menu-link {
  display: flex;
  align-items: baseline;
  gap: 1.2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
  transition: color var(--transition), padding-left var(--transition);
}
/*   AL COLOCAR EL MOUSE CAMBIA DE COLOR */
.menu-link:hover {
  color: var(--gold);
  padding-left: 0.5rem;
}
/*   NUMERACION DEL MENU */
.menu-num {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--gold);
  padding-top: 0.3rem;
}
/*   INFORMACION DE CONTACTO EN EL MENU */
.menu-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.07);
}

.menu-footer p {
  font-size: 0.75rem;
  color: var(--gray);
  line-height: 2;
  letter-spacing: 0.03em;
}

/*   PORTADAS DE LAS PAGINAS */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.55);
  transform: scale(1.03);
  animation: heroZoom 10s ease-out forwards;
}
/* LA PORTADA SE ADAPTA A LA PANTALLA*/
@keyframes heroZoom {
  from { transform: scale(1.08); }
  to   { transform: scale(1.00); }
}

/*   CAPA TRANSPARENTE ENCIMA DE LA PORTADA 
PARA QUE SE VEA LA LETRA ENCIMA */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(13,13,13,0.15) 0%,
    rgba(13,13,13,0.0) 40%,
    rgba(13,13,13,0.6) 100%
  );
}

/*LINEA ANIMADA PARA DESPLAZARSE*/
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  right: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, var(--white));
  animation: scrollPulse 2s ease-in-out infinite;
}
/*   LA LINEA AUMENTA Y DISMINUYE SU TAMANO */
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(0.7); }
}

/* ══════════════════════════════════════
   SECCIÓN PROYECTOS
══════════════════════════════════════ */
/*   PROYECTOS DESTACADOS */
.section-projects {
  padding: 6rem 2.5rem 5rem;
}
/*   TITULO Y DESCRIPCION */
.projects-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.section-sub {
  font-size: 0.9rem;
  color: var(--gray-light);
  font-weight: 300;
  letter-spacing: 0.02em;
}

/*
Organiza las tarjetas utilizando CSS Grid.

Desktop:
3 columnas

Tablet:
2 columnas

Celular:
1 columna
*/ 
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}
/* TARJETA DE PROYECTOS, DONDE ESTA CADA IMAGEN*/
.project-card {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  display: block;
}
/*  IMAGEN DEL PROYECTO */
.project-card img {
  transition: transform 0.6s var(--transition), filter 0.4s;
  filter: brightness(0.75);
}
/*  LA IMAGEN AUMENTA CUANDO SE PASA EL MOUSE */
.project-card:hover img {
  transform: scale(1.06);
  filter: brightness(0.55);
}
/*  EL NOMBRE DEL PROYECTO QUE SOLO APARECE 
CUANDO PONES EL MOUSE ENCIMA */
.project-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 2rem 1.2rem 1.2rem;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 100%);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.35s, transform 0.35s;
}

.project-card:hover .project-label {
  opacity: 1;
  transform: translateY(0);
}

.project-label span {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* CTA proyectos */
.projects-cta {
  text-align: center;
  margin-top: 3rem;
}

/* ══════════════════════════════════════
   BOTÓN OUTLINE
══════════════════════════════════════ */
.btn-outline {
  display: inline-block;
  padding: 0.9rem 2.4rem;
  border: 1.5px solid var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--white);
  background: transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--black);
}

/* ══════════════════════════════════════
   CTA BANNER
══════════════════════════════════════ */
.section-cta {
  padding: 7rem 2.5rem;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.07);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.section-cta h2 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1.2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-cta p {
  font-size: 0.88rem;
  color: var(--gray-light);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
  font-weight: 300;
}

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
footer {
  padding: 4rem 2.5rem 2rem;
  display: grid;
  grid-template-columns: 1.2fr 1.4fr 1fr;
  gap: 3rem;
  border-top: 1px solid rgba(255,255,255,0.07);
  position: relative;
}

.footer-logo {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
}

.footer-tagline {
  font-size: 0.78rem;
  color: var(--gray);
  font-weight: 300;
  letter-spacing: 0.04em;
}

.footer-col h4 {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.4rem;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.footer-col li {
  font-size: 0.78rem;
  color: var(--gray-light);
  font-weight: 300;
  line-height: 1.6;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.footer-col li svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--gold);
}

.footer-bottom {
  grid-column: 1 / -1;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.07);
  font-size: 0.7rem;
  color: var(--gray);
  letter-spacing: 0.05em;
}

/* ══════════════════════════════════════
   FADE IN (scroll animation)
══════════════════════════════════════ */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

  .project-card { aspect-ratio: 4/3; }

  footer {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .section-cta h2 { font-size: 1.5rem; }

  #navbar { padding: 0 1.25rem; }
  .section-projects { padding: 4rem 1.25rem 3rem; }
  .section-cta { padding: 4rem 1.25rem; }
  footer { padding: 3rem 1.25rem 1.5rem; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  footer { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}