/* Daria Belkina — portfolio design system
   Source: design manifesto (brief) — single typeface, no decoration,
   generous whitespace, image-first. */

@font-face {
  font-family: "Carlito";
  src: url("../fonts/Carlito-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Carlito";
  src: url("../fonts/Carlito-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --color-text: #1a1a1a;
  --color-secondary: #7a7a7a;
  --color-bg: #ffffff;

  --font-body: "Carlito", Calibri, "Segoe UI", sans-serif;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 2rem;
  --space-4: 4rem;
  --space-5: 8rem;

  --measure: 38rem; /* comfortable reading width for expositions */
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--color-secondary);
}

/* Service labels: nav, eyebrows, captions — small caps + letter-spacing */
.label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-secondary);
}

/* ---------- Header ---------- */

.site-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-3) 0;
}

.site-header--overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
}

.site-logo {
  display: inline-block;
  font-size: 1.375rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.site-logo-sub {
  margin-top: 0.25rem;
}

.site-nav {
  display: flex;
  gap: var(--space-3);
  align-items: baseline;
}

.site-nav a {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-secondary);
}

.site-nav a[aria-current="page"] {
  color: var(--color-text);
}

.lang-switch a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

/* Works dropdown (medium filter) */
.nav-item {
  position: relative;
}

.nav-item .dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  padding: calc(var(--space-1) + var(--space-2)) var(--space-2) var(--space-2);
  flex-direction: column;
  gap: var(--space-2);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  white-space: nowrap;
}

.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown {
  display: flex;
}

.dropdown a {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-secondary);
}

/* ---------- Hero (Works landing) ---------- */

.hero {
  position: relative;
  width: 100%;
  height: min(80vh, 840px);
  min-height: 400px;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 84%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 84%, transparent 100%);
}

.hero-media--static {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .hero-media--motion {
    display: none;
  }
  .hero-media--static {
    display: block;
  }
}

/* ---------- Works grid ---------- */

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4) var(--space-3);
  padding: var(--space-4) var(--space-3);
}

.work-card {
  display: block;
}

.work-card img {
  width: 100%;
  height: auto;
}

.work-card-title {
  margin-top: var(--space-2);
  font-weight: 700;
}

.work-card-year {
  color: var(--color-secondary);
  font-weight: 400;
}

.work-card-medium {
  font-size: 0.875rem;
  color: var(--color-secondary);
}

.works-section-label {
  padding: 0 var(--space-3);
  margin-top: var(--space-4);
}

/* ---------- Work / project page ---------- */

.work-page {
  padding: var(--space-4) var(--space-3);
  max-width: 64rem;
  margin: 0 auto;
}

.work-title-block {
  margin-bottom: var(--space-4);
  max-width: var(--measure);
}

.work-title-block h1 {
  font-weight: 700;
  font-size: 1.75rem;
  margin: 0 0 var(--space-1);
}

.work-meta {
  font-size: 0.875rem;
  color: var(--color-secondary);
  line-height: 1.6;
}

.work-media {
  margin-bottom: var(--space-2);
}

/* Use on low-resolution source images (e.g. renders) to avoid displaying them oversized */
.work-media--narrow img {
  max-width: 50%;
}

.work-media--medium img {
  max-width: 70%;
}

.work-caption {
  font-size: 0.8rem;
  color: var(--color-secondary);
  margin-top: var(--space-1);
  margin-bottom: var(--space-4);
}

.work-details-label {
  margin-top: var(--space-3);
  margin-bottom: var(--space-1);
}

.work-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}

/* Match gallery images of the same work to a shared height, uncropped — width follows each image's own ratio */
.work-gallery--uniform {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--space-2);
}

.work-gallery--uniform img {
  height: 34rem;
  width: auto;
  max-width: 100%;
}

/* Use with --uniform for wider/landscape image pairs, so two still fit on one row */
.work-gallery--uniform-short img {
  height: 20rem;
}

/* Small, fixed 3-across row — for sellable print series shown at reduced size */
.work-gallery--compact {
  grid-template-columns: repeat(3, 1fr);
  max-width: 34rem;
  gap: var(--space-1);
}

/* Geological Seconds layout: two visualisations stacked left, material trial matching their combined height on the right, uncropped */
.geological-layout {
  display: grid;
  grid-template-columns: 15rem auto;
  grid-template-rows: 10rem 10rem;
  gap: var(--space-1);
  margin-bottom: var(--space-1);
}

.geological-layout img {
  display: block;
}

.geological-layout .viz-1 {
  grid-column: 1;
  grid-row: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.geological-layout .viz-2 {
  grid-column: 1;
  grid-row: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.geological-layout .material-trial {
  grid-column: 2;
  grid-row: 1 / span 2;
  width: auto;
  height: 100%;
  object-fit: contain;
}

/* Collapsible "read more" (native <details>) */
details.work-text-full {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
}

details.work-text-full summary {
  cursor: pointer;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-secondary);
  list-style: none;
}

details.work-text-full summary::-webkit-details-marker {
  display: none;
}

details.work-text-full summary:hover {
  color: var(--color-text);
}

details.work-text-full[open] summary {
  margin-bottom: var(--space-2);
}

details.work-text-full .work-text {
  margin-top: var(--space-2);
}

.work-subsection {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
}

.video-link {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--color-text);
  padding-bottom: 2px;
  display: inline-block;
}

.work-text {
  max-width: var(--measure);
  text-align: left;
}

.work-text p {
  margin: 0 0 var(--space-2);
}

.work-text-full {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
}

/* ---------- About / CV / Contact ---------- */

.page {
  padding: var(--space-4) var(--space-3);
  max-width: var(--measure);
  margin: 0 auto;
}

.page h1 {
  font-weight: 700;
  font-size: 1.5rem;
}

.cv-section {
  margin-top: var(--space-3);
}

.cv-section h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-secondary);
  font-weight: 400;
}

.cv-entry {
  margin: 0 0 var(--space-1);
}

.cv-year {
  color: var(--color-secondary);
}

.download-link {
  display: inline-block;
  margin-top: var(--space-3);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border-bottom: 1px solid var(--color-text);
  padding-bottom: 2px;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: var(--space-4) var(--space-3) var(--space-3);
  font-size: 0.75rem;
  color: var(--color-secondary);
}

.site-footer a {
  color: var(--color-secondary);
}