/* ============================================================
   Romina Carrasco — UX Portfolio
   "Structured minimalism" — architecture meets systems UX
   ============================================================ */

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.container-narrow { max-width: 760px; }
.container-wide { max-width: 1320px; }

.section {
  padding-block: clamp(3rem, 7vw, 6rem);
}

.eyebrow {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
}

.lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 56ch;
}

/* ---------- Site header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.82);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-divider);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
}
.brand svg { width: 22px; height: 22px; color: var(--color-accent); }
.brand-mark { color: var(--color-accent); font-weight: 500; }

.nav { display: flex; align-items: center; gap: 0.25rem; }
.nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-full);
  font-weight: 500;
}
.nav a:hover { color: var(--color-text); background: var(--color-surface-2); }
.nav a.is-active { color: var(--color-text); }

.header-actions { display: flex; align-items: center; gap: 0.35rem; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid transparent;
}
.icon-btn:hover { color: var(--color-text); background: var(--color-surface-2); }
.icon-btn svg { width: 18px; height: 18px; }

/* mobile menu toggle */
.menu-toggle { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; padding-block: clamp(4rem, 10vw, 7rem) clamp(3rem, 7vw, 5rem); overflow: hidden; }

.hero-inner { position: relative; z-index: 1; }

.hero h1 {
  font-size: var(--text-hero);
  font-weight: 600;
  max-width: 14ch;
  margin-top: 1.25rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.hero-meta {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text-faint);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 0.5rem; }
.hero-meta span + span::before {
  content: '·';
  margin-right: 0.5rem;
  color: var(--color-text-faint);
}

.hero-cta {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.btn:hover { border-color: var(--color-text); color: var(--color-text); }
.btn svg { width: 15px; height: 15px; }
.btn--primary {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}
.btn--primary:hover { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }

/* ---------- Section header ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: var(--text-2xl);
  font-weight: 600;
}
.section-head p {
  color: var(--color-text-muted);
  max-width: 38ch;
  font-size: var(--text-base);
}

/* ---------- Work grid (home + work index) ---------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2.5vw, 1.75rem);
}
.work-card {
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.work-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}
.work-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-surface-offset);
}
.work-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}
.work-card:hover .work-card__media img { transform: scale(1.03); }
.work-card__body {
  padding: clamp(1.25rem, 2vw, 1.75rem);
}
.work-card__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.work-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: 0.4rem;
}
.work-card__desc {
  margin-top: 0.5rem;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.work-card__arrow {
  margin-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 500;
}
.work-card__arrow svg { width: 14px; height: 14px; transition: transform var(--transition); }
.work-card:hover .work-card__arrow svg { transform: translateX(3px); }

.work-card--wide { grid-column: 1 / -1; }
.work-card--wide .work-card__media { aspect-ratio: 16 / 7; }

/* ---------- Featured narrative band ---------- */
.narrative {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.narrative h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: 1rem;
}
.narrative p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  font-size: var(--text-base);
}
.narrative .stat-row {
  display: flex;
  gap: 2.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.narrative .stat-row dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 0.3rem;
}
.narrative .stat-row dd {
  font-size: var(--text-lg);
  font-weight: 600;
  font-family: var(--font-display);
}

.narrative__visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  background: var(--color-surface-offset);
  aspect-ratio: 5 / 4;
}
.narrative__visual img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(2.5rem, 5vw, 4rem);
  margin-top: clamp(4rem, 8vw, 7rem);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
.footer-brand p {
  margin-top: 0.75rem;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-width: 32ch;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 0.85rem;
  font-weight: 500;
}
.footer-col a, .footer-col li {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: 0.25rem 0;
}
.footer-col a:hover { color: var(--color-text); }

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-divider);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

/* ---------- Page hero (interior pages) ---------- */
.page-hero {
  padding-block: clamp(3rem, 7vw, 5rem) clamp(2rem, 5vw, 3rem);
  border-bottom: 1px solid var(--color-divider);
}
.page-hero h1 {
  font-size: var(--text-3xl);
  font-weight: 600;
  margin-top: 1rem;
}
.page-hero .lead { margin-top: 1.5rem; }

/* ---------- Case study layout ---------- */
.case-hero-img {
  margin-top: clamp(2rem, 4vw, 3rem);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface-offset);
  aspect-ratio: 16 / 9;
}
.case-hero-img img { width: 100%; height: 100%; object-fit: cover; }
.case-hero-img--ecotrip { aspect-ratio: 16 / 11; background: #e9e7e2; }
.case-hero-img--ecotrip img { object-fit: cover; }

.case-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 2rem;
  border-top: 1px solid var(--color-divider);
}
.case-meta dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 0.4rem;
}
.case-meta dd {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 500;
}

.case-body {
  padding-block: clamp(2.5rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.case-toc {
  position: sticky;
  top: 6rem;
  font-size: var(--text-sm);
}
.case-toc h2 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 0.85rem;
  font-weight: 500;
}
.case-toc a {
  display: block;
  padding: 0.4rem 0;
  color: var(--color-text-muted);
  border-left: 1px solid transparent;
  padding-left: 0.85rem;
  margin-left: -0.85rem;
  transition: all var(--transition);
}
.case-toc a:hover, .case-toc a.is-active {
  color: var(--color-text);
  border-color: var(--color-accent);
}

.case-content { max-width: 100%; }
.case-content > p,
.case-content > h2,
.case-content > h3,
.case-content > ul,
.case-content > ol,
.case-content > dl,
.case-content > .callout { max-width: 720px; }
.case-content h2 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 0.85rem;
  scroll-margin-top: 6rem;
}
.case-content h2:first-child { margin-top: 0; }
.case-content h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: 1.75rem;
  margin-bottom: 0.6rem;
  font-family: var(--font-body);
}
.case-content p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.case-content p strong { color: var(--color-text); }
.case-content ul { margin: 0 0 1.25rem; }
.case-content ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-muted);
}
.case-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 1px;
  background: var(--color-accent);
}

.case-figure {
  margin: 2rem 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-offset);
}
.case-figure img { width: 100%; display: block; }

.callout {
  margin: 1.75rem 0;
  padding: 1.25rem 1.5rem;
  background: var(--color-accent-soft);
  border-radius: var(--radius-sm);
}
.callout p { color: var(--color-text); margin: 0; }

.step-list { counter-reset: step; margin: 1.5rem 0; }
.step-list > li {
  position: relative;
  padding-left: 3rem;
  margin-bottom: 1.5rem;
  counter-increment: step;
}
.step-list > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1rem;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
}

/* next project nav */
.case-nav {
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(2.5rem, 5vw, 4rem);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.case-nav a {
  display: inline-flex;
  flex-direction: column;
  gap: 0.3rem;
}
.case-nav .nav-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.case-nav .nav-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
}
.case-nav a:hover .nav-title { color: var(--color-accent); }
.case-nav .next { margin-left: auto; text-align: right; }

/* ---------- About page ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  padding-block: clamp(2.5rem, 5vw, 4rem);
}
.about-portrait {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  background: var(--color-surface-offset);
  aspect-ratio: 4 / 5;
  position: sticky;
  top: 6rem;
}
.about-portrait img { width: 100%; height: 100%; object-fit: cover; }
.about-body h2 { font-size: var(--text-xl); margin-top: 2.5rem; margin-bottom: 1rem; font-weight: 600; }
.about-body h2:first-child { margin-top: 0; }
.about-body p { color: var(--color-text-muted); margin-bottom: 1rem; }

.timeline { margin: 1.5rem 0; }
.timeline-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--color-divider);
}
.timeline-item:last-child { border-bottom: 1px solid var(--color-divider); }
.timeline-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  padding-top: 0.15rem;
}
.timeline-role { font-weight: 600; font-size: var(--text-base); }
.timeline-company { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: 0.15rem; }
.timeline-desc { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: 0.5rem; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2rem;
  margin-top: 1rem;
}
.skills-grid h3 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 0.6rem;
  font-weight: 500;
}
.skills-grid ul li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: 0.2rem 0;
}

.lang-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.lang-list li {
  font-size: var(--text-sm);
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}
.lang-list li b { color: var(--color-text); font-weight: 500; }

/* ---------- Reveal animation ---------- */
/* Only hides content once JS confirms it can reveal it (html.js-reveal is added by an
   inline script in <head>). Without JS, or if the class never lands, content stays visible. */
html.js-reveal .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms cubic-bezier(0.16,1,0.3,1), transform 600ms cubic-bezier(0.16,1,0.3,1);
}
html.js-reveal .reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav { display: none; }
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem; height: 2.5rem;
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
  }
  .menu-toggle[aria-expanded='true'] > svg { display: none; }
  .menu-toggle[aria-expanded='true'] {
    position: relative;
  }
  .menu-toggle[aria-expanded='true']::after {
    content: '';
    position: absolute;
    width: 0.95rem;
    height: 0.95rem;
    background: currentColor;
    -webkit-mask:
      linear-gradient(45deg, transparent calc(50% - 0.8px), #000 calc(50% - 0.8px), #000 calc(50% + 0.8px), transparent calc(50% + 0.8px)) center / 100% 100% no-repeat,
      linear-gradient(-45deg, transparent calc(50% - 0.8px), #000 calc(50% - 0.8px), #000 calc(50% + 0.8px), transparent calc(50% + 0.8px)) center / 100% 100% no-repeat;
    mask:
      linear-gradient(45deg, transparent calc(50% - 0.8px), #000 calc(50% - 0.8px), #000 calc(50% + 0.8px), transparent calc(50% + 0.8px)) center / 100% 100% no-repeat,
      linear-gradient(-45deg, transparent calc(50% - 0.8px), #000 calc(50% - 0.8px), #000 calc(50% + 0.8px), transparent calc(50% + 0.8px)) center / 100% 100% no-repeat;
  }
  .nav.is-open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-divider);
    padding: 0.5rem 1rem 1rem;
    gap: 0;
  }
  .nav.is-open a { padding: 0.85rem 0.5rem; }

  .work-grid { grid-template-columns: 1fr; }
  .narrative { grid-template-columns: 1fr; }
  .case-meta { grid-template-columns: repeat(2, 1fr); }
  .case-body { grid-template-columns: 1fr; }
  .case-toc { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .about-portrait { position: static; max-width: 360px; }
  .footer-grid { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 0.25rem; }
  .skills-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .case-meta { grid-template-columns: 1fr; }
  .hero-meta { flex-direction: column; align-items: flex-start; }
  .hero-meta span + span::before { display: none; }
}

@media (hover: none) {
  .work-card:hover { transform: none; }
  .work-card:hover .work-card__media img { transform: none; }
}

/* Image lightbox */
.zoomable { cursor: zoom-in; }
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: rgba(20, 18, 16, 0.92);
  opacity: 0;
  transition: opacity 0.2s ease;
  cursor: zoom-out;
}
.lightbox.is-open { opacity: 1; }
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-sm);
}
.lightbox.has-more img { cursor: zoom-in; }
.lightbox.is-zoomed {
  overflow: auto;
  display: block;
  cursor: default;
}
.lightbox.is-zoomed img {
  max-width: none;
  max-height: none;
  margin: auto;
  cursor: zoom-out;
}
.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}