/* ==========================================================================
   Usama Ali Sher — Portfolio
   Design language: "technical drawing meets modern editorial"
   Type: Archivo (display) / Space Grotesk (body) / JetBrains Mono (labels)
   ========================================================================== */

:root {
  --bg: #FAFAF7;
  --surface: #FFFFFF;
  --ink: #101014;
  --ink-soft: #3F3F46;
  --muted: #6B6B74;
  --line: #E3E3DE;
  --line-strong: #C9C9C2;
  --accent: #1D4ED8;
  --accent-ink: #16389B;
  --navy: #0B1526;
  --navy-2: #101E36;
  --paper-on-navy: #E8EBF2;
  --muted-on-navy: #8B96AC;
  --line-on-navy: rgba(232, 235, 242, 0.14);
  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --maxw: 76rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; }

::selection { background: var(--accent); color: #fff; }

/* ---- language toggle -----------------------------------------------------
   Every translatable node carries .en and/or .it. The html element carries
   data-lang; the inactive language is removed from flow. */
html[data-lang="en"] .it { display: none !important; }
html[data-lang="it"] .en { display: none !important; }

/* ---- typography ---------------------------------------------------------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0;
  font-weight: 700;
}

.display {
  font-size: clamp(2.75rem, 7.5vw, 5.5rem);
  text-transform: uppercase;
  letter-spacing: -0.015em;
}

.h-section { font-size: clamp(1.9rem, 4vw, 3rem); }
.h-card { font-size: 1.35rem; line-height: 1.2; }

p { margin: 0 0 1rem; }
.lede { font-size: clamp(1.1rem, 1.8vw, 1.3rem); line-height: 1.55; color: var(--ink-soft); max-width: 38em; }

.mono-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.mono-label--accent { color: var(--accent); }

.measure { max-width: 42em; }

/* ---- layout -------------------------------------------------------------- */

.container {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }

/* Section heading row: sheet-number label left, rule to the right */
.section-head {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}
.section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line-strong);
  transform: translateY(-0.4em);
}
.section-head .mono-label { white-space: nowrap; }

/* ---- header / nav --------------------------------------------------------- */

.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 247, 0.88);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 4.25rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.brand-mark {
  width: 2rem;
  height: 2rem;
  border: 1.5px solid var(--ink);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin-left: auto;
  list-style: none;
  padding: 0;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  padding-block: 0.35rem;
  border-bottom: 1.5px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.lang-switch {
  display: flex;
  align-items: center;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}
.lang-switch button {
  appearance: none;
  border: 0;
  background: transparent;
  font: inherit;
  color: var(--muted);
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}
.lang-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--bg);
}

.nav-toggle {
  display: none;
  appearance: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  width: 2.5rem;
  height: 2.5rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}
.nav-toggle svg { width: 1.2rem; height: 1.2rem; stroke: var(--ink); }

@media (max-width: 860px) {
  .nav { gap: 1rem; }
  .nav-toggle { display: inline-flex; }
  .nav .lang-switch { margin-left: 0; }
  .nav-links {
    position: fixed;
    top: 4.25rem;
    inset-inline: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1rem;
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a {
    display: block;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 0.85rem;
  }
  .nav-links a[aria-current="page"] { border-bottom-color: var(--line); color: var(--accent); }
}

/* ---- buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.9rem 1.5rem;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn:hover { background: var(--ink); color: var(--bg); }

.btn--solid { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--solid:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: #fff; }

.btn--on-dark { border-color: var(--paper-on-navy); color: var(--paper-on-navy); }
.btn--on-dark:hover { background: var(--paper-on-navy); color: var(--navy); }

.btn svg { width: 0.95em; height: 0.95em; }

/* ---- document card --------------------------------------------------------- */

.doc-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  border: 1.5px solid var(--line-strong);
  text-decoration: none;
  color: var(--ink);
  background: var(--bg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.doc-card:hover {
  border-color: var(--accent);
  box-shadow: 4px 4px 0 var(--accent);
  transform: translate(-2px, -2px);
}
.doc-card-icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  background: var(--ink);
  color: var(--bg);
  transition: background 0.2s ease;
}
.doc-card:hover .doc-card-icon { background: var(--accent); }
.doc-card-icon svg { width: 1.25rem; height: 1.25rem; }
.doc-card-body { flex: 1; min-width: 0; }
.doc-card-title { display: block; font-weight: 600; font-size: 0.98rem; line-height: 1.3; }
.doc-card-meta {
  display: block;
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.doc-card-arrow {
  flex-shrink: 0;
  font-size: 1.2rem;
  color: var(--accent);
  transition: transform 0.2s ease;
}
.doc-card:hover .doc-card-arrow { transform: translateX(4px); }

.text-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1.5px solid currentColor;
  padding-bottom: 0.15rem;
  transition: color 0.2s ease;
}
.text-link:hover { color: var(--accent-ink); }

/* ---- hero ------------------------------------------------------------------ */

.hero {
  position: relative;
  padding-top: clamp(8rem, 16vh, 11rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: end;
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.5rem;
}
.hero-kicker::before {
  content: "";
  width: 2.5rem;
  height: 1.5px;
  background: var(--accent);
}

.hero-meta {
  margin-top: 2.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line-strong);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
}
.hero-meta div { min-width: 8rem; }
.hero-meta dt { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.3rem; }
.hero-meta dd { margin: 0; font-size: 0.95rem; font-weight: 500; }

.hero-figure { position: relative; }
.hero-figure img {
  width: 100%;
  height: auto;
  filter: saturate(0.92);
}
.hero-figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  background: var(--bg);
  padding: 0.6rem 0.9rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* faint survey-grid backdrop, top right of hero */
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -8rem;
  width: 44rem;
  height: 44rem;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 3.5rem 3.5rem;
  mask-image: radial-gradient(closest-side, rgba(0,0,0,0.55), transparent 72%);
  -webkit-mask-image: radial-gradient(closest-side, rgba(0,0,0,0.55), transparent 72%);
  pointer-events: none;
}
.hero > .container { position: relative; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; align-items: start; }
  .hero-figure { max-width: 26rem; }
}

/* ---- fact strip (real numbers only) ---------------------------------------- */

.fact-strip {
  border-block: 1px solid var(--line-strong);
  background: var(--surface);
}
.fact-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.fact {
  padding: 1.75rem 1.5rem;
  border-left: 1px solid var(--line);
}
.fact:first-child { border-left: 0; padding-left: 0; }
.fact-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  letter-spacing: -0.02em;
  display: block;
}
.fact-label { font-size: 0.85rem; color: var(--muted); margin-top: 0.2rem; display: block; }

@media (max-width: 720px) {
  .fact-strip .container { grid-template-columns: 1fr 1fr; }
  .fact:nth-child(3) { border-left: 0; padding-left: 0; }
  .fact { border-top: 1px solid var(--line); }
  .fact:nth-child(-n+2) { border-top: 0; }
}

/* ---- project cards ---------------------------------------------------------- */

.project-feature-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
}
.project-feature-grid .project-card:nth-child(1) { grid-column: span 7; }
.project-feature-grid .project-card:nth-child(2) { grid-column: span 5; }
.project-feature-grid .project-card:nth-child(3) { grid-column: span 5; }
.project-feature-grid .project-card:nth-child(4) { grid-column: span 7; }

@media (max-width: 860px) {
  .project-feature-grid .project-card { grid-column: 1 / -1 !important; }
}

.project-card {
  position: relative;
  display: block;
  text-decoration: none;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  transition: border-color 0.25s ease;
}
.project-card:hover { border-color: var(--ink); }

.project-card figure { margin: 0; overflow: hidden; border-bottom: 1px solid var(--line); }
.project-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(0.92);
  transition: transform 0.45s ease;
}
.project-card:hover img { transform: scale(1.025); }

.project-card-body { padding: 1.4rem 1.5rem 1.6rem; }
.project-card-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.7rem;
}
.project-card h3 { transition: color 0.2s ease; }
.project-card:hover h3 { color: var(--accent); }
.project-card p { color: var(--muted); font-size: 0.95rem; margin: 0.5rem 0 0; }

.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border: 1px solid var(--line-strong);
  padding: 0.25rem 0.55rem;
}

/* ---- discipline rows (home, instead of icon cards) --------------------------- */

.discipline-row {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 1.5rem 2.5rem;
  padding-block: 2rem;
  border-top: 1px solid var(--line-strong);
  align-items: start;
}
.discipline-row:last-child { border-bottom: 1px solid var(--line-strong); }
.discipline-row .num { font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted); padding-top: 0.4rem; }
.discipline-row h3 { font-size: 1.45rem; }
.discipline-row .tools { margin-top: 0.9rem; }
.discipline-row p { color: var(--ink-soft); margin: 0; }

@media (max-width: 760px) {
  .discipline-row { grid-template-columns: 3rem 1fr; }
  .discipline-row > p, .discipline-row .desc { grid-column: 2; }
}

/* ---- dark band (CTA / footer) ------------------------------------------------ */

.band-dark {
  background: var(--navy);
  color: var(--paper-on-navy);
  position: relative;
  overflow: hidden;
}
.band-dark .mono-label { color: var(--muted-on-navy); }

/* contour lines backdrop for dark bands */
.band-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("../images/contours.svg");
  background-size: 900px;
  background-repeat: repeat;
  opacity: 0.35;
  pointer-events: none;
}
.band-dark > .container { position: relative; }

.cta-band { padding-block: clamp(4.5rem, 10vw, 7.5rem); }
.cta-band .display { font-size: clamp(2.2rem, 5.5vw, 4rem); }
.cta-band p { color: var(--muted-on-navy); max-width: 34em; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.25rem; }

/* ---- footer ------------------------------------------------------------------- */

.site-footer { padding-block: 3.5rem 2rem; }
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--line-on-navy);
}
.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-on-navy);
  margin-bottom: 1rem;
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.55rem; }
.footer-grid a { color: var(--paper-on-navy); text-decoration: none; font-size: 0.95rem; transition: color 0.2s ease; }
.footer-grid a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }

.footer-name { font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; letter-spacing: -0.01em; }
.footer-tag { color: var(--muted-on-navy); font-size: 0.95rem; margin-top: 0.6rem; max-width: 26em; }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-on-navy);
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* ---- page hero (inner pages) ---------------------------------------------------- */

.page-hero {
  padding-top: clamp(7.5rem, 15vh, 10rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line-strong);
}
.page-hero .display { font-size: clamp(2.4rem, 6vw, 4.5rem); }
.page-hero .lede { margin-top: 1.5rem; }

/* ---- about ------------------------------------------------------------------------ */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }

.figure-stack { display: grid; gap: 1.25rem; }
.figure-stack figure { margin: 0; }
.figure-stack img { width: 100%; object-fit: cover; filter: saturate(0.92); }
.figure-stack figcaption {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.55rem;
}

.edu-item {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line-strong);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.5rem 2rem;
}
.edu-item:last-child { border-bottom: 1px solid var(--line-strong); }
.edu-item h3 { font-size: 1.2rem; }
.edu-item .where { color: var(--muted); font-size: 0.95rem; margin-top: 0.3rem; }
.edu-item .when { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; color: var(--muted); padding-top: 0.35rem; white-space: nowrap; }
.edu-item p { grid-column: 1 / -1; color: var(--ink-soft); font-size: 0.98rem; margin: 0.4rem 0 0; }

/* ---- experience timeline ------------------------------------------------------------ */

.timeline { position: relative; }
.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 1.25rem 3rem;
  padding-block: 2.5rem;
  border-top: 1px solid var(--line-strong);
}
.timeline-item:last-child { border-bottom: 1px solid var(--line-strong); }
.timeline-when {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding-top: 0.4rem;
}
.timeline-when .badge-current {
  display: inline-block;
  margin-top: 0.6rem;
  color: var(--accent);
  border: 1px solid currentColor;
  padding: 0.2rem 0.5rem;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.timeline-body h3 { font-size: 1.4rem; }
.timeline-body .org { color: var(--muted); margin: 0.35rem 0 1rem; font-size: 0.98rem; }
.timeline-body ul { margin: 0; padding-left: 1.1rem; color: var(--ink-soft); display: grid; gap: 0.45rem; font-size: 0.98rem; }
.timeline-body li::marker { color: var(--accent); }

@media (max-width: 720px) {
  .timeline-item { grid-template-columns: 1fr; padding-block: 2rem; }
  .timeline-when { padding-top: 0; }
}

/* ---- skills --------------------------------------------------------------------------- */

.skill-group {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: 1rem 3rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--line-strong);
}
.skill-group:last-child { border-bottom: 1px solid var(--line-strong); }
.skill-group h3 { font-size: 1.05rem; padding-top: 0.2rem; }
.skill-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-chip {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  padding: 0.45rem 0.8rem;
  transition: border-color 0.2s ease;
}
.skill-chip:hover { border-color: var(--ink); }
.skill-chip strong { font-weight: 600; }
.skill-chip .lvl { color: var(--muted); }

@media (max-width: 720px) { .skill-group { grid-template-columns: 1fr; } }

/* ---- projects index --------------------------------------------------------------------- */

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.filter-btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-btn:hover { border-color: var(--ink); color: var(--ink); }
.filter-btn[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }

.project-index-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}
@media (max-width: 760px) { .project-index-grid { grid-template-columns: 1fr; } }
.project-card.is-hidden { display: none; }

/* ---- project detail ------------------------------------------------------------------------ */

.project-hero-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-strong);
}
.project-hero-meta dt { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.35rem; }
.project-hero-meta dd { margin: 0; font-size: 0.95rem; font-weight: 500; }
@media (max-width: 720px) { .project-hero-meta { grid-template-columns: 1fr 1fr; } }

.project-cover { margin: 0; }
.project-cover img { width: 100%; aspect-ratio: 21 / 9; object-fit: cover; filter: saturate(0.92); }

.prose h2 { font-size: 1.6rem; margin: 2.5rem 0 1rem; }
.prose h2:first-child { margin-top: 0; }
.prose p { color: var(--ink-soft); }
.prose ul { color: var(--ink-soft); padding-left: 1.1rem; display: grid; gap: 0.45rem; }
.prose li::marker { color: var(--accent); }

.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.gallery figure { margin: 0; cursor: zoom-in; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; filter: saturate(0.92); transition: opacity 0.2s ease; }
.gallery figure:hover img { opacity: 0.92; }
.gallery figcaption { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); padding-top: 0.55rem; }
@media (max-width: 640px) { .gallery { grid-template-columns: 1fr; } }

/* ---- photo wall (floating masonry, about page) ------------------------------------------------- */
/* Masonry columns: images of any orientation pack together. To add a photo, drop another
   <figure><img><figcaption></figure> into .photo-wall — no fixed sizes needed. */
.photo-wall { columns: 3; column-gap: 1.15rem; }
@media (max-width: 900px) { .photo-wall { columns: 2; } }
@media (max-width: 540px)  { .photo-wall { columns: 1; } }
.photo-wall figure {
  margin: 0 0 1.15rem;
  break-inside: avoid;
  position: relative;
  overflow: hidden;
  cursor: zoom-in;
  background: var(--line);
  box-shadow: 0 1px 2px rgba(16, 16, 20, 0.06), 0 8px 22px rgba(16, 16, 20, 0.09);
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.35s ease;
}
.photo-wall figure:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 10px rgba(16, 16, 20, 0.10), 0 20px 44px rgba(16, 16, 20, 0.17);
}
.photo-wall figure:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.photo-wall img {
  width: 100%;
  display: block;
  filter: saturate(0.92);
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.photo-wall figure:hover img { transform: scale(1.035); }
.photo-wall figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.6rem 0.9rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(to top, rgba(11, 21, 38, 0.82), rgba(11, 21, 38, 0));
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.photo-wall figure:hover figcaption,
.photo-wall figure:focus figcaption,
.photo-wall figure:focus-visible figcaption { opacity: 1; transform: none; }
@media (hover: none) { .photo-wall figcaption { opacity: 1; transform: none; } }

.project-pager {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line-strong);
  padding-top: 2rem;
  margin-top: 3.5rem;
}

/* ---- lightbox --------------------------------------------------------------------------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(11, 21, 38, 0.94);
  display: none;
  place-items: center;
  padding: 2rem;
}
.lightbox.is-open { display: grid; }
.lightbox img { max-width: min(92vw, 70rem); max-height: 82vh; object-fit: contain; }
.lightbox-caption {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--muted-on-navy);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  appearance: none;
  background: transparent;
  border: 1px solid var(--line-on-navy);
  color: var(--paper-on-navy);
  width: 2.75rem;
  height: 2.75rem;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.lightbox-close:hover { background: rgba(255,255,255,0.08); }
.lightbox-close svg { width: 1.1rem; height: 1.1rem; }

/* ---- contact ------------------------------------------------------------------------------------ */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2.5rem, 6vw, 5rem);
}
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li {
  border-top: 1px solid var(--line-strong);
  padding: 1.1rem 0;
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
}
.contact-list li:last-child { border-bottom: 1px solid var(--line-strong); }
.contact-list .mono-label { min-width: 6.5rem; }
.contact-list a { text-decoration: none; font-weight: 500; transition: color 0.2s ease; }
.contact-list a:hover { color: var(--accent); }

.form-field { margin-bottom: 1.4rem; }
.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.form-field input,
.form-field textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  transition: border-color 0.2s ease;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}
.form-note { font-size: 0.85rem; color: var(--muted); margin-top: 1rem; }

/* ---- focus visibility ------------------------------------------------------------------------------ */

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---- reveal on scroll ------------------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .project-card img, .btn, .nav-links a { transition: none; }
}

/* ---- misc -------------------------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--ink);
  color: var(--bg);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.skip-link:focus { left: 0; }

hr.rule { border: 0; border-top: 1px solid var(--line-strong); margin: 0; }