/* ============================================================
   PORTAFOLIO JUANITA — Hoja de estilos principal
   Design System: design-system.md
   ============================================================ */

/* ─── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700&display=swap');

/* ─── Variables CSS ────────────────────────────────────────── */
:root {
  /* Colores */
  --color-black:        #0A0A0A;
  --color-white:        #F5F5F5;
  --color-red:          #D72B2B;
  --color-red-hover:    #B52222;
  --color-gray-dark:    #1C1C1C;
  --color-gray-mid:     #6B6B6B;
  --color-gray-light:   #E0E0E0;
  --color-overlay:      rgba(10, 10, 10, 0.55);

  /* Tipografía */
  --font-main:          'Montserrat', sans-serif;
  --text-display:       72px;
  --text-h2:            48px;
  --text-h3:            24px;
  --text-body:          16px;
  --text-caption:       13px;
  --text-label:         11px;

  /* Espaciado */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
  --space-7: 96px;
  --space-8: 160px;

  /* Layout */
  --nav-height:         64px;
  --grid-margin:        80px;
  --grid-margin-tablet: 40px;
  --grid-margin-mobile: 20px;
}

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

html {
  scroll-behavior: smooth;
}

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

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ─── Page Transition ───────────────────────────────────────── */
.page-wrapper {
  animation: fadeIn 0.4s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ─── Navegación ────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  padding: 0 var(--grid-margin);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 1000;
  transition: transform 0.3s ease, background 0.3s ease;
}

.nav.hidden {
  transform: translateY(-100%);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-logo {
  font-family: var(--font-main);
  font-size: var(--text-caption);
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-white);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-logo:hover {
  color: var(--color-red);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-links a {
  font-family: var(--font-main);
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-white);
  text-decoration: none;
  margin-left: var(--space-5);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-links a:hover {
  color: var(--color-red);
}

.nav-links a.active {
  border-bottom-color: var(--color-red);
  color: var(--color-white);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: none;
  border: none;
  gap: 5px;
  padding: 0;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-white);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Menú móvil */
.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--color-black);
  z-index: 999;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 48px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.nav-mobile.open {
  opacity: 1;
  pointer-events: all;
}

.nav-mobile a {
  font-family: var(--font-main);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-white);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-mobile a:hover {
  color: var(--color-red);
}

/* ─── Footer ────────────────────────────────────────────────── */
.footer {
  background: var(--color-black);
  border-top: 1px solid var(--color-gray-dark);
  padding: var(--space-7) var(--grid-margin);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.footer-col-title {
  font-family: var(--font-main);
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-red);
  margin-bottom: var(--space-4);
}

.footer-line {
  width: 40px;
  height: 2px;
  background: var(--color-red);
  margin-bottom: var(--space-4);
}

.footer-text {
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--color-white);
  max-width: 65ch;
}

.footer-text.placeholder {
  color: var(--color-gray-mid);
  font-style: italic;
}

.footer-contact-item {
  display: block;
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 300;
  color: var(--color-white);
  margin-bottom: var(--space-3);
  transition: color 0.2s ease;
}

.footer-contact-item:hover {
  color: var(--color-red);
}

.footer-contact-item.placeholder {
  color: var(--color-gray-mid);
  font-style: italic;
  pointer-events: none;
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-dark);
  padding-top: var(--space-5);
  text-align: center;
}

.footer-copyright {
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 300;
  color: var(--color-gray-mid);
}

/* ─── Sección Intro de Galería ──────────────────────────────── */
.gallery-intro {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: var(--color-black);
  position: relative;
}

.gallery-intro-title {
  font-family: var(--font-main);
  font-size: var(--text-h2);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-white);
  text-transform: uppercase;
  text-align: center;
}

.gallery-intro-line {
  width: 40px;
  height: 2px;
  background: var(--color-red);
  margin: var(--space-4) auto;
}

.gallery-intro-count {
  font-family: var(--font-main);
  font-size: var(--text-caption);
  font-weight: 400;
  color: var(--color-gray-mid);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.gallery-intro-scroll {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-gray-mid);
}

.gallery-intro-scroll span {
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ─── Slide de Galería ──────────────────────────────────────── */
.photo-slide {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
}

.photo-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.photo-slide .placeholder-img {
  width: 100%;
  height: 100%;
  background: var(--color-gray-dark);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-3);
}

.photo-slide .placeholder-img span {
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gray-mid);
}

.photo-counter {
  position: absolute;
  bottom: 32px;
  right: 40px;
  font-family: var(--font-main);
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: rgba(245, 245, 245, 0.5);
  text-transform: uppercase;
  user-select: none;
}

/* ─── Cards de Sección (Homepage) ───────────────────────────── */
.section-cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  height: 50vh;
}

.section-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  text-decoration: none;
}

.section-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(30%);
  transition: filter 0.4s ease, transform 0.4s ease;
}

.section-card .placeholder-img {
  width: 100%;
  height: 100%;
  background: var(--color-gray-dark);
  display: flex;
  justify-content: center;
  align-items: center;
}

.section-card:hover img {
  filter: grayscale(0%);
  transform: scale(1.03);
}

.section-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,0.7) 0%, transparent 60%);
  pointer-events: none;
}

.section-card-label {
  position: absolute;
  bottom: var(--space-4);
  left: var(--space-4);
  font-family: var(--font-main);
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-white);
  transition: color 0.3s ease;
}

.section-card:hover .section-card-label {
  color: var(--color-red);
}

/* ─── Portada — Collage Hero ─────────────────────────────────── */
.hero {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
}

.hero-collage {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
  grid-template-rows: 1fr 1fr;
  gap: 2px;
}

.hero-collage .collage-item {
  overflow: hidden;
  position: relative;
}

.hero-collage .collage-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-collage .collage-item.placeholder-img {
  background: var(--color-gray-dark);
}

.collage-item-1 { grid-row: 1 / 3; }  /* columna 1, abarca ambas filas */
.collage-item-2 { grid-row: 1 / 2; }  /* columna 2, fila 1 */
.collage-item-3 { grid-row: 1 / 3; grid-column: 3 / 4; } /* columna 3, abarca ambas filas */
.collage-item-4 { grid-row: 2 / 3; }  /* columna 2, fila 2 */

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.45);
  pointer-events: none;
}

.hero-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  pointer-events: none;
}

.hero-name {
  font-family: var(--font-main);
  font-size: var(--text-display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--color-white);
  text-transform: uppercase;
}

.hero-subtitle {
  font-family: var(--font-main);
  font-size: 18px;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--color-white);
  margin-top: var(--space-3);
  text-transform: uppercase;
}

/* ─── Botón Primario ────────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  font-family: var(--font-main);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-white);
  background: transparent;
  border: 1px solid var(--color-white);
  padding: 14px 32px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
}

.btn-primary:hover {
  color: var(--color-red);
  border-color: var(--color-red);
}

/* ─── Página 404 ─────────────────────────────────────────────── */
.page-404 {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  padding: var(--space-6);
}

.page-404 h1 {
  font-size: var(--text-display);
  font-weight: 700;
  color: var(--color-white);
}

.page-404 p {
  font-size: var(--text-body);
  color: var(--color-gray-mid);
  margin-bottom: var(--space-4);
}

/* ─── SVG Íconos ─────────────────────────────────────────────── */
.icon-chevron {
  width: 24px;
  height: 24px;
  stroke: var(--color-gray-mid);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .nav {
    padding: 0 var(--grid-margin-tablet);
  }

  .footer {
    padding: var(--space-6) var(--grid-margin-tablet);
  }

  .hero-name {
    font-size: 52px;
  }

  .gallery-intro-title {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  .nav {
    padding: 0 var(--grid-margin-mobile);
  }

  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-mobile {
    display: flex;
  }

  .hero-name {
    font-size: 40px;
    letter-spacing: -0.01em;
  }

  .hero-subtitle {
    font-size: 13px;
    letter-spacing: 0.2em;
  }

  .hero-collage {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
  }

  .collage-item-1 { grid-row: 1 / 2; grid-column: 1 / 2; }
  .collage-item-2 { grid-row: 1 / 2; grid-column: 2 / 3; }
  .collage-item-3 { grid-row: 2 / 4; grid-column: 1 / 3; }
  .collage-item-4 { display: none; }

  .section-cards {
    grid-template-columns: 1fr;
    height: auto;
  }

  .section-card {
    height: 33vh;
  }

  .footer {
    padding: var(--space-6) var(--grid-margin-mobile);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .gallery-intro-title {
    font-size: 28px;
  }

  .photo-counter {
    right: 20px;
    bottom: 20px;
  }
}