/* ============================================================
   RODRIGO C. AGUILERA — PORTFOLIO
   style.css — Estilos principales
   ============================================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&family=Inter:wght@300;400;500&display=swap');

/* --- Variables CSS --- */
:root {
  --color-bg: #ffffff;
  --color-text: #111111;
  --color-text-muted: #888888;
  --color-text-light: #aaaaaa;
  --color-border: #e5e5e5;
  --color-hover: #f5f5f5;
  --color-overlay: rgba(0, 0, 0, 0.75);

  --font-display: 'Cormorant Garamond', 'Garamond', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;

  --nav-height: 58px;
  --max-width: 1360px;
  --gutter: 40px;
  --gutter-sm: 20px;

  --transition-fast: 0.18s ease;
  --transition-mid: 0.35s ease;
  --transition-slow: 0.6s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.875rem;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

a:hover {
  opacity: 0.6;
}

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

ul, ol {
  list-style: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-text);
  color: var(--color-bg);
  padding: 8px 16px;
  font-size: 0.75rem;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

/* ============================================================
   NAVIGATION
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-mid);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Logo / Brand */
.site-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--color-text);
  transition: opacity var(--transition-fast);
  white-space: nowrap;
}

.site-logo:hover {
  opacity: 0.6;
}

/* Desktop Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  transition: opacity var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width var(--transition-mid);
}

.nav-links a:hover {
  opacity: 1;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  opacity: 0.5;
}

/* Mobile Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  cursor: pointer;
  padding: 4px 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--color-text);
  transition: all var(--transition-mid);
  transform-origin: center;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--color-bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-mid);
}

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

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--color-text);
}

/* ============================================================
   MAIN CONTENT WRAPPER
   ============================================================ */

.site-main {
  padding-top: var(--nav-height);
  min-height: calc(100vh - var(--nav-height));
}

/* ============================================================
   HOME PAGE — SLIDESHOW
   ============================================================ */

.home-slideshow {
  width: 100%;
  height: calc(100vh - var(--nav-height));
  position: relative;
  overflow: hidden;
  background: #fff;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.9s ease-in-out;
  pointer-events: none;
}

.slide.active {
  opacity: 1;
  pointer-events: auto;
}

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

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  padding: 28px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--color-border);
}

.footer-instagram {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition-fast);
}

.footer-instagram:hover {
  color: var(--color-text);
  opacity: 1;
}

.footer-instagram svg {
  width: 15px;
  height: 15px;
}

/* ============================================================
   PAGE HEADER (inner pages)
   ============================================================ */

.page-header {
  padding: 60px var(--gutter) 40px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 300;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

/* ============================================================
   PROJECTS PAGE — GRID
   ============================================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
  padding: 4px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.project-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  display: block;
  background: #f0f0f0;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover img {
  transform: scale(1.04);
}

.project-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0) 50%);
  display: flex;
  align-items: flex-end;
  padding: 28px;
  opacity: 0;
  transition: opacity var(--transition-mid);
}

.project-card:hover .project-card-overlay {
  opacity: 1;
}

.project-card-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: #ffffff;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

/* ============================================================
   PROJECT DETAIL PAGE
   ============================================================ */

.project-detail {
  max-width: 780px;
  margin: 0 auto;
  padding: 50px var(--gutter) 80px;
}

.project-detail-header {
  margin-bottom: 50px;
}

.project-detail-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin-bottom: 6px;
}

.project-detail-year {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 30px;
}

.project-detail-text {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 50px;
}

.project-detail-text p + p {
  margin-top: 1.2em;
}

/* Project Gallery */
.project-gallery {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 60px;
}

.project-gallery img {
  width: 100%;
  height: auto;
  display: block;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.project-gallery img:hover {
  opacity: 0.92;
}

/* Wide gallery variant */
.project-gallery.wide {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 4px;
}

/* Project Navigation Arrows */
.project-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
  margin-top: 20px;
}

.project-nav a {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.project-nav .nav-label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.project-nav .nav-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-text);
  transition: opacity var(--transition-fast);
}

.project-nav a:hover .nav-title {
  opacity: 0.5;
}

.project-nav .prev {
  align-items: flex-start;
}

.project-nav .next {
  align-items: flex-end;
  text-align: right;
}

/* ============================================================
   VIDEO PAGE
   ============================================================ */

.video-page {
  max-width: 780px;
  margin: 0 auto;
  padding: 50px var(--gutter) 80px;
}

.video-project {
  margin-bottom: 80px;
  padding-bottom: 80px;
  border-bottom: 1px solid var(--color-border);
}

.video-project:last-child {
  border-bottom: none;
}

.video-project-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
  line-height: 1.2;
}

.video-project-text {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 1.85;
  margin-bottom: 36px;
  color: var(--color-text);
}

.video-embed-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  background: #000;
  margin-bottom: 24px;
}

.video-embed-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-embed-container video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  object-fit: contain;
  background: #000;
}

.video-image {
  width: 100%;
  max-width: 500px;
  margin: 20px auto;
}

.video-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */

.about-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 50px var(--gutter) 80px;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  gap: 16px;
  margin-bottom: 50px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 20px;
}

.lang-btn {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  transition: color var(--transition-fast);
  position: relative;
}

.lang-btn::after {
  content: '';
  position: absolute;
  bottom: -22px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width var(--transition-mid);
}

.lang-btn.active {
  color: var(--color-text);
}

.lang-btn.active::after {
  width: 100%;
}

/* About content layout */
.lang-content {
  display: none;
}

.lang-content.active {
  display: block;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-bio {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--color-text);
}

.about-bio p + p {
  margin-top: 1.5em;
}

/* CV Sections */
.cv-sections {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.cv-section h3 {
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.cv-section p,
.cv-section li {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 6px;
}

.cv-section em {
  font-style: italic;
}

.about-name-heading {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  margin-bottom: 32px;
  letter-spacing: 0.02em;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */

.contact-page {
  max-width: 600px;
  margin: 0 auto;
  padding: 60px var(--gutter) 100px;
}

.contact-intro {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.8;
  margin-bottom: 50px;
  color: var(--color-text);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 400;
}

.form-group input,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--color-text);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
  outline: none;
  transition: border-color var(--transition-fast);
  width: 100%;
  resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--color-text);
}

.form-group textarea {
  min-height: 120px;
}

.form-submit {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-text);
  padding: 14px 36px;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  align-self: flex-start;
}

.form-submit:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.form-success {
  display: none;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-top: 20px;
  font-style: italic;
}

/* ============================================================
   LIGHTBOX
   ============================================================ */

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.94);
  cursor: zoom-out;
  align-items: center;
  justify-content: center;
}

.lightbox.open {
  display: flex;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  display: block;
  animation: lb-fade-in 0.25s ease;
}

@keyframes lb-fade-in {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

.lightbox-close {
  position: fixed;
  top: 24px;
  right: 28px;
  color: #ffffff;
  font-size: 1.8rem;
  font-weight: 300;
  line-height: 1;
  cursor: pointer;
  z-index: 2001;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  color: #ffffff;
  font-size: 1.5rem;
  font-weight: 200;
  cursor: pointer;
  padding: 20px 24px;
  opacity: 0.5;
  transition: opacity var(--transition-fast);
  z-index: 2001;
  user-select: none;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 1;
}

.lightbox-prev { left: 0; }
.lightbox-next { right: 0; }

/* ============================================================
   PAGE TRANSITIONS
   ============================================================ */

.page-fade-in {
  animation: page-fade 0.5s ease forwards;
}

@keyframes page-fade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   UTILITY
   ============================================================ */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

.text-center { text-align: center; }
.mt-sm { margin-top: 16px; }
.mt-md { margin-top: 32px; }
.mt-lg { margin-top: 60px; }