/* ============================================================
   CHENCHU LÓPEZ — Portfolio personal
   Sistema visual: claro, modular, grotesca compacta
   Ref principal: totaldesign.com
   ============================================================ */

/* --- Tokens ----------------------------------------------- */
:root {
  --bg:        #FFFFFF;
  --ink:       #000000;
  --muted:     #A6A6A6;
  --line:      #E8E8E8;
  --hover-bg:  #F5F5F5;
  --font-head: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'Space Mono', monospace;

  --space-xs:  0.5rem;
  --space-s:   1rem;
  --space-m:   2rem;
  --space-l:   4rem;
  --space-xl:  7rem;

  --max-prose: 60ch;
  --max-page:  1400px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:       #0F0F0F;
    --ink:      #F0F0F0;
    --muted:    #666666;
    --line:     #222222;
    --hover-bg: #1A1A1A;
  }
}

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

html {
  scroll-behavior: smooth;
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  min-height: 100dvh;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

/* --- Layout base ------------------------------------------ */
.page-wrap {
  width: 100%;
  max-width: var(--max-page);
  margin: 0 auto;
  padding-inline: var(--space-m);
}

section {
  padding-block: var(--space-xl);
  border-top: 1px solid var(--line);
}

section:first-of-type { border-top: none; }

/* --- Header ----------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: var(--bg);
  border-bottom: 1px solid var(--line);
}

.site-header .page-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-s);
}

.site-logo {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-m);
}

.site-nav {
  display: flex;
  gap: var(--space-m);
  list-style: none;
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.15s;
}

.site-nav a:hover { color: var(--ink); }
.site-nav a.is-active { color: var(--ink); }

/* --- Hamburger -------------------------------------------- */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

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

/* --- Menú mobile ------------------------------------------ */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 9;
  background: var(--bg);
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  padding: 58px 0 var(--space-m);
  opacity: 0;
  pointer-events: none;
  -webkit-transition: opacity 0.25s ease;
  transition: opacity 0.25s ease;
}

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

.mobile-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-l);
  padding-inline: var(--space-m);
}

.mobile-nav li {
  border-bottom: 1px solid var(--line);
  padding-block: var(--space-m);
}

.mobile-nav li:first-child { border-top: 1px solid var(--line); }

.mobile-nav-item {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3.5vw, 2.1rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.25;
  transition: color 0.15s;
}

.mobile-nav-item:hover { color: var(--muted); }

.lang-toggle--mobile {
  font-size: 0.8rem;
  margin-inline: var(--space-m);
}

/* --- Lang toggle ------------------------------------------ */
.lang-toggle {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.lang-sep { color: var(--line); }
.lang-option { color: var(--muted); transition: color 0.15s; }
.lang-option.is-active { color: var(--ink); font-weight: 700; }
.lang-option:hover { color: var(--ink); }

/* --- Hero -------------------------------------------------- */
#hero {
  padding-block: var(--space-xl);
  min-height: 88dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-top: none;
}

.hero-name {
  font-size: clamp(4rem, 14vw, 11rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--ink);
}

.hero-sub {
  margin-top: var(--space-m);
  font-family: var(--font-mono);
  font-size: clamp(0.78rem, 1.4vw, 0.88rem);
  color: var(--muted);
  letter-spacing: 0.03em;
}

.hero-scroll {
  margin-top: var(--space-l);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: var(--space-s);
  transition: color 0.15s;
}

.hero-scroll:hover { color: var(--ink); }
.hero-scroll::after {
  content: '';
  display: block;
  width: 36px;
  height: 1px;
  background: currentColor;
  transition: width 0.3s;
}
.hero-scroll:hover::after { width: 56px; }

/* --- Section label ---------------------------------------- */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--space-l);
  display: flex;
  align-items: center;
  gap: var(--space-s);
}

.section-label::before {
  content: '—';
  font-size: 0.6rem;
  color: var(--muted);
}

/* --- Intro ------------------------------------------------- */
#intro .intro-text {
  font-size: clamp(1.4rem, 3.5vw, 2.1rem);
  font-weight: 500;
  line-height: 1.25;
  max-width: var(--max-prose);
  letter-spacing: -0.02em;
}

#intro .intro-text strong { font-weight: 700; }

/* ============================================================
   WORKS — cuadrícula modular estilo totaldesign
   ============================================================ */
#works { padding-block: var(--space-xl); }

.works-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-l);
  flex-wrap: wrap;
  gap: var(--space-s);
}

.works-header .section-label { margin-bottom: 0; }

.works-filters {
  display: flex;
  gap: var(--space-m);
  list-style: none;
}

.works-filters button {
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.works-filters button:hover,
.works-filters button.is-active {
  color: var(--ink);
  border-color: var(--ink);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-m);
  row-gap: var(--space-l);
}

.work-item {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  grid-column: span 4;
}

.work-item-image {
  width: 100%;
  aspect-ratio: 2/3;
  overflow: hidden;
  background: var(--card-bg, var(--hover-bg));
  display: flex;
  align-items: center;
  justify-content: center;
}

.work-item-image img {
  width: auto;
  height: 70%;
  max-width: 65%;
  object-fit: contain;
  filter: drop-shadow(3px 6px 12px rgba(0,0,0,0.50));
  will-change: transform;
}

.work-item:hover .work-item-image img { opacity: 0.9; }

.work-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.work-item-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding-top: 0.25rem;
}

.work-item-title {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--ink);
  transition: color 0.15s;
}

.work-item:hover .work-item-title { color: var(--muted); }

.work-item-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.work-item.is-hidden { display: none; }

/* --- About ------------------------------------------------- */
#about .about-grid {
  display: grid;
  gap: var(--space-l);
}

.about-portrait img {
  width: 100%;
  display: block;
  aspect-ratio: 3/2;
  object-fit: cover;
  object-position: center top;
  background: var(--hover-bg);
}

.portrait-credit {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-top: 0.5rem;
}

.portrait-credit a {
  color: var(--muted);
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 3px;
}

.portrait-credit a:hover { color: var(--ink); }

.about-bio p {
  font-size: clamp(0.9rem, 1.8vw, 1rem);
  line-height: 1.75;
  margin-bottom: var(--space-m);
  max-width: var(--max-prose);
}

.about-bio p:last-child { margin-bottom: 0; }

.about-bio a {
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 3px;
}

.about-bio a:hover { text-decoration-style: solid; }

.about-timeline { border: 1px solid var(--line); }

.timeline-item {
  display: grid;
  grid-template-columns: 7ch 1fr;
  gap: var(--space-s);
  align-items: baseline;
  padding: var(--space-s) var(--space-m);
  border-bottom: 1px solid var(--line);
  transition: background 0.15s;
}

.timeline-item:last-child { border-bottom: none; }
.timeline-item:hover { background: var(--hover-bg); }

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.timeline-fact { font-size: 0.875rem; line-height: 1.4; }

/* --- Contact ---------------------------------------------- */
.contact-links {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-m);
  font-size: 0.875rem;
  color: var(--muted);
  padding: var(--space-s) var(--space-xs);
  border-bottom: 1px solid var(--line);
  transition: color 0.15s, background 0.15s;
}

.contact-link:hover {
  color: var(--ink);
  background: var(--hover-bg);
}

.contact-link-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  width: 8ch;
  flex-shrink: 0;
}

/* --- Footer ----------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: var(--space-m);
}

.site-footer .page-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-s);
}

.footer-copy,
.footer-alias {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* --- Lightbox --------------------------------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-m);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.lightbox.is-open { opacity: 1; pointer-events: all; }

.lightbox img {
  max-width: 100%;
  max-height: 90dvh;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: var(--space-m);
  right: var(--space-m);
  background: none;
  border: none;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0.4;
  padding: var(--space-xs);
  transition: opacity 0.15s;
}

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

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 639px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-s); }

  .work-item { grid-column: span 1; }

  .header-right { display: none; }
  .menu-toggle  { display: flex; }
  .mobile-menu  { display: flex; }
}

@media (min-width: 640px) and (max-width: 959px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-m); }
  .work-item { grid-column: span 1; }
}

@media (min-width: 960px) {
  .page-wrap { padding-inline: var(--space-l); }

  #about .about-grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .about-portrait img {
    aspect-ratio: 3/4;
  }

  #contact .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: var(--space-l);
  }
}

/* ============================================================
   ACCESIBILIDAD
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}