/* =====================================================================
   drios.art — senior thesis portfolio
   Single stylesheet. Mobile-first. ~300 lines.

   Shared chrome (search-and-replace targets if you edit them):
     <header class="site-header"> ... </header>
     <footer class="site-footer"> ... </footer>
   These are hand-copied into every HTML file. Edit one, then propagate.
   ===================================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, h4, p, figure, blockquote, ul, ol { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

/* ---------- Tokens ---------- */
:root {
  --bg: #FAFAF7;
  --text: #141414;
  --muted: rgba(20, 20, 20, 0.6);
  --accent: #A91D2E;
  --rule: rgba(20, 20, 20, 0.08);
  --row-hover: rgba(20, 20, 20, 0.02);

  --font-display: 'GT Sectra', 'Fraunces', Georgia, serif;
  --font-ui: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;
  --space-xxl: 10rem;
}

/* ---------- Base ---------- */
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* No font-weight above 500 anywhere. */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 400; line-height: 1.1; }
strong, b { font-weight: 500; }

a { color: inherit; text-decoration: none; }
a:hover, a:focus-visible {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}
a:focus-visible { outline: 1px dotted var(--accent); outline-offset: 4px; }

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--space-xl); }
.section--tight { padding-block: var(--space-lg); }
.section--loose { padding-block: var(--space-xxl); }

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

.muted { color: var(--muted); }
.italic { font-style: italic; }

/* ---------- Eyebrow ---------- */
.eyebrow {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
}
.eyebrow--accent { color: var(--accent); }
.eyebrow--muted { color: var(--muted); }

/* ---------- Header / Nav ---------- */
.site-header {
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: 1.5rem;
}
.site-header__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.005em;
}
.site-nav ul {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}
.site-nav a {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding-block: 0.25rem;
}
/* Active page: muted underline (not red) so wayfinding doesn't compete with hover */
.site-nav a[aria-current="page"] {
  border-bottom: 1px solid var(--text);
}
.site-nav a[aria-current="page"]:hover {
  border-bottom-color: transparent;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--rule);
  margin-top: var(--space-xl);
}
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: 1.75rem;
}

@media (max-width: 600px) {
  .site-header .container { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .site-nav ul { gap: 1.25rem; }
  .site-footer .container { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
}

/* ---------- Media component (placeholder + auto-swap) ---------- */
.media {
  position: relative;
  width: 100%;
  background: rgba(20, 20, 20, 0.05);
  border: 1px solid var(--rule);
  overflow: hidden;
}
.media--16x9  { aspect-ratio: 16 / 9; }
.media--16x10 { aspect-ratio: 16 / 10; }

.media img,
.media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.media__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  word-break: break-all;
  /* Never intercept taps — the video/img controls underneath must be reachable.
     Without this, mobile browsers can't tap the play button on a <video> with
     preload="metadata" because the placeholder sits on top in stacking order. */
  pointer-events: none;
}
.media--loaded { background: transparent; border-color: transparent; }
.media--loaded img,
.media--loaded video { opacity: 1; }
.media--loaded .media__placeholder { display: none; }
.media--error img,
.media--error video { display: none; }

/* Natural-size media: image dictates its own height (used for hero shots
   so portrait, landscape, and square pieces all show uncropped).
   While loading, falls back to a 16:10 placeholder block. Rules placed
   after the base .media img block so they win on equal specificity. */
.media--natural img,
.media--natural video {
  position: relative;
  inset: auto;
  width: 100%;
  height: auto;
  object-fit: contain;
}
.media--natural:not(.media--loaded) {
  aspect-ratio: 16 / 10;
}
.media--natural:not(.media--loaded) img,
.media--natural:not(.media--loaded) video {
  position: absolute;
  inset: 0;
  height: 100%;
}
.media--natural.media--loaded {
  background: transparent;
  border-color: transparent;
}

.media--zoomable img { cursor: zoom-in; }
.media--zoomable::after {
  content: "Click to expand";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(20, 20, 20, 0.45);
  color: #FAFAF7;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}
@media (hover: hover) {
  .media--zoomable:hover::after { opacity: 1; }
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(20, 20, 20, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 3vw, 2.5rem);
  cursor: zoom-out;
  animation: lightbox-in 0.18s ease-out;
}
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
@keyframes lightbox-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ---------- Home ---------- */
.hero { padding-top: var(--space-xl); padding-bottom: var(--space-lg); }
.hero__eyebrow { margin-bottom: var(--space-md); }
.hero__title {
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  max-width: 18ch;
}
.hero__subtitle {
  margin-top: var(--space-sm);
  color: var(--muted);
  font-size: clamp(16px, 1.4vw, 18px);
  max-width: 44ch;
}
.hero__video { margin-top: var(--space-lg); }

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: start;
}
@media (min-width: 768px) {
  .split { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
}
.pullquote {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.35;
  max-width: 28ch;
}
.pullquote-link {
  display: inline-block;
  margin-top: var(--space-md);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 0.2rem;
}
.pullquote-link:hover { text-decoration: none; }

/* ---------- Works list (used on home + portfolio) ---------- */
.works-heading {
  font-size: clamp(32px, 4vw, 44px);
  margin-bottom: var(--space-lg);
}
.works-list { border-top: 1px solid var(--rule); }
.work-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  grid-template-areas:
    "num    text"
    "thumb  thumb";
  gap: var(--space-md);
  padding-block: var(--space-md);
  border-bottom: 1px solid var(--rule);
  align-items: start;
  transition: background-color 0.18s ease;
}
/* Hover styling guarded — on touch devices :hover triggers on tap and stays
   sticky until the next tap, which made work-row underlines look like a bug. */
@media (hover: hover) {
  .work-row:hover { background: var(--row-hover); text-decoration: none; }
  .work-row:hover .work-row__title { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.22em; }
}

.work-row__numeral {
  grid-area: num;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--muted);
  font-size: 22px;
  padding-top: 0.25rem;
}
.work-row__thumb { grid-area: thumb; }
.work-row__text  { grid-area: text; }

.work-row__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.4vw, 28px);
  line-height: 1.15;
}
.work-row__english {
  display: block;
  margin-top: 0.4rem;
  font-style: italic;
  color: var(--muted);
  font-size: 15px;
}
.work-row__meta { margin-top: 0.85rem; color: var(--muted); }

@media (min-width: 768px) {
  .work-row {
    grid-template-columns: 64px minmax(280px, 1.1fr) 1.4fr;
    grid-template-areas: "num thumb text";
    gap: var(--space-lg);
    align-items: center;
    padding-block: var(--space-lg);
  }
}

/* ---------- Thesis ---------- */
.thesis {
  max-width: 640px;
  margin-inline: auto;
  padding-block: var(--space-xl);
}
.thesis__title {
  font-size: clamp(36px, 5vw, 56px);
  margin-top: var(--space-md);
  letter-spacing: -0.005em;
}
.thesis__byline { margin-top: var(--space-sm); color: var(--muted); }
.thesis__body {
  margin-top: var(--space-lg);
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.7;
}
.thesis__body p + p { margin-top: 1.4em; }

/* ---------- Work subpage ---------- */
.work {
  padding-top: var(--space-lg);
}
.work__hero {
  max-width: 960px;
  margin-inline: auto;
  margin-top: var(--space-md);
}
.work__hero--pair {
  max-width: 1200px;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
@media (min-width: 768px) {
  .work__hero--pair {
    grid-template-columns: 1fr 1fr;
  }
}
.work__hero--pair .media { margin: 0; }
.work__title-block {
  max-width: 960px;
  margin-inline: auto;
  margin-top: var(--space-lg);
}
.work__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.005em;
}
.work__english {
  display: block;
  margin-top: 0.55rem;
  font-style: italic;
  color: var(--muted);
  font-size: clamp(16px, 1.4vw, 18px);
}
.work__meta { margin-top: 1.1rem; color: var(--muted); }

.work__statement {
  max-width: 640px;
  margin: var(--space-xl) auto 0;
  font-style: italic;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.work__process { margin-top: var(--space-xl); }
.work__process-heading { margin-bottom: var(--space-lg); }
.work__process-list {
  display: grid;
  gap: var(--space-md);
  max-width: 960px;
  margin-inline: auto;
}

.work__nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--rule);
}
.work__nav a { display: block; }
.work__nav-label { display: block; margin-bottom: 0.4rem; }
.work__nav-title {
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 24px);
}
.work__nav--prev { text-align: left; }
.work__nav--next { text-align: right; }

/* ---------- Contact ---------- */
.contact {
  padding-block: var(--space-xxl);
  text-align: left;
}
.contact__email {
  display: inline-block;
  margin-top: var(--space-md);
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.005em;
}
.contact__note { margin-top: var(--space-md); color: var(--muted); max-width: 44ch; }