/* ============================================================
   TOKENS
   ============================================================ */
:root{
  --paper: #ffffff;
  --paper-line: #e6e6e6;
  --surface: #fafafa;
  --ink: #0d0e10;
  --ink-soft: #5a5e64;
  --blue: #1f4788;
  --blue-dim: #7c8ba6;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-data: 'IBM Plex Mono', monospace;

  --max: 1180px;
  --edge: 56px;
}

@media (max-width: 720px){
  :root{ --edge: 22px; }
}

*{ box-sizing: border-box; }

::selection{
  background: var(--blue);
  color: var(--paper);
}

html{
  scroll-behavior: smooth;
}

body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

ul{
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3{
  font-family: var(--font-display);
  margin: 0;
}

p{ margin: 0; }

:focus-visible{
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation: none !important; transition: none !important; }
}

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar{
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px var(--edge);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--paper-line);
}

.topbar-mark{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  border: 1.5px solid var(--ink);
  padding: 4px 10px;
}
.mark-epsilon{
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 700;
  font-size: 19px;
  margin-right: 2px;
  position: relative;
  top: 1px;
}

.topbar-nav{
  display: flex;
  gap: 32px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.topbar-nav a{
  color: var(--ink-soft);
  position: relative;
  padding-bottom: 4px;
}
.topbar-nav a:hover{ color: var(--ink); }
.topbar-nav a::after{
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1.5px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}
.topbar-nav a:hover::after{ transform: scaleX(1); }

.topbar-cta{
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--blue);
  white-space: nowrap;
}
.topbar-cta:hover{ color: var(--ink); }

@media (max-width: 720px){
  .topbar-nav{ display: none; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  max-width: var(--max);
  margin: 0 auto;
  padding: 96px var(--edge) 0;
}

.hero-layout{
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 36px;
  align-items: start;
  padding-bottom: 72px;
}

.eyebrow{
  color: var(--blue);
  margin-bottom: 20px;
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-name{
  font-size: clamp(36px, 6.5vw, 78px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.hero-thesis{
  margin-top: 30px;
  max-width: 62ch;
}
.hero-thesis p{
  font-size: 18px;
  color: var(--ink-soft);
  margin-top: 18px;
}
.hero-thesis p:first-child{ margin-top: 0; }

.portrait-wrap{
  position: relative;
  padding: 22px;
  align-self: start;
}

.sum-border{
  position: absolute;
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--blue-dim);
  white-space: nowrap;
  overflow: hidden;
  user-select: none;
}
.sum-top, .sum-bottom{
  left: 22px;
  right: 22px;
  height: 16px;
  line-height: 16px;
  text-align: center;
}
.sum-top{ top: 0; }
.sum-bottom{ bottom: 0; }
.sum-left, .sum-right{
  top: 22px;
  bottom: 22px;
  width: 16px;
  writing-mode: vertical-rl;
  text-align: center;
}
.sum-left{ left: 0; }
.sum-right{ right: 0; }

.portrait-frame{
  aspect-ratio: 3 / 4;
  border: 1px solid var(--paper-line);
  box-shadow: 0 32px 56px -28px rgba(13, 14, 16, 0.28);
}
.portrait-frame .img-fallback{ font-size: 11.5px; }

@media (max-width: 780px){
  .hero-layout{ grid-template-columns: 1fr; gap: 32px; }
  .portrait-wrap{ max-width: 300px; }
}

/* ============================================================
   DIVIDER
   ============================================================ */
.divider{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--edge);
}
.divider span{
  display: block;
  height: 1px;
  background: var(--paper-line);
}

/* ============================================================
   SECTION SHELL
   ============================================================ */
.section{
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px var(--edge);
}

.section-head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

.section-head h2{
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.section-note{
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ============================================================
   MEDIA FRAME — shared image container + graceful "no photo yet"
   fallback, used by portrait, feature cards, and the carousel
   ============================================================ */
.media-frame{
  position: relative;
  overflow: hidden;
  background: var(--surface);
}
.media-frame img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.img-fallback{
  display: none;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 12px;
  font-size: 11px;
  color: var(--blue-dim);
  letter-spacing: 0.02em;
}
.media-frame.img-missing{
  background-image: repeating-linear-gradient(
    45deg,
    var(--paper-line) 0,
    var(--paper-line) 1px,
    transparent 1px,
    transparent 10px
  );
}
.media-frame.img-missing img{ display: none; }
.media-frame.img-missing .img-fallback{ display: flex; }

/* ============================================================
   FEATURED PROJECTS — editorial numbered index, cards with real
   spacing (not a bordered table), subtle lift on hover
   ============================================================ */
.feature-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
}

.feature-card{
  display: flex;
  flex-direction: column;
  color: var(--ink);
  transition: transform 0.2s ease;
}
.feature-card:hover{ transform: translateY(-4px); }

.feature-image{
  aspect-ratio: 4 / 3;
  border: 1px solid var(--paper-line);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.feature-card:hover .feature-image{
  border-color: var(--ink);
  box-shadow: 0 28px 48px -26px rgba(13, 14, 16, 0.32);
}
.feature-image img{ transition: transform 0.3s ease; }
.feature-card:hover .feature-image img{ transform: scale(1.035); }

.read-more{
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 14, 16, 0.78);
  color: var(--paper);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.feature-card:hover .read-more,
.feature-card:focus-visible .read-more{
  opacity: 1;
}

.feature-caption{
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-meta{
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.feature-index{
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--paper-line);
}

.feature-date{
  font-family: var(--font-data);
  font-size: 11.5px;
  color: var(--blue);
  letter-spacing: 0.01em;
}

.feature-card h3{
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
}

@media (max-width: 900px){
  .feature-grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px){
  .feature-grid{ grid-template-columns: 1fr; }
}

/* ============================================================
   PROJECT DETAIL PAGE
   ============================================================ */
.detail-hero{
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px var(--edge) 0;
}

.back-link{
  color: var(--ink-soft);
  display: inline-block;
  margin-bottom: 30px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.back-link:hover{ color: var(--blue); }

.detail-title{
  font-size: clamp(38px, 6vw, 62px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  max-width: 18ch;
}

.detail-meta{
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 22px;
  font-family: var(--font-data);
  font-size: 12.5px;
  color: var(--blue);
  letter-spacing: 0.01em;
}

.detail-lede{
  margin-top: 26px;
  max-width: 46ch;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: 21px;
  color: var(--ink);
}

.detail-hero-image{
  max-width: var(--max);
  margin: 44px auto 0;
  padding: 0 var(--edge);
}
.detail-hero-image .media-frame{
  aspect-ratio: 16 / 9;
  border: 1px solid var(--ink);
  box-shadow: 0 36px 64px -32px rgba(13, 14, 16, 0.24);
}

.detail-description{
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px var(--edge) 0;
}
.detail-description p{
  max-width: 68ch;
  font-size: 16.5px;
  color: var(--ink-soft);
  margin-top: 16px;
}
.detail-description p:first-child{ margin-top: 0; }

.process-heading{
  max-width: var(--max);
  margin: 60px auto 0;
  padding: 0 var(--edge);
  border-top: 1px solid var(--paper-line);
  padding-top: 26px;
}
.process-heading h2{
  font-size: 22px;
  font-weight: 600;
}

/* ---- carousel ---- */
.carousel{
  max-width: var(--max);
  margin: 28px auto 0;
  padding: 0 var(--edge) 80px;
}

.carousel-stage{
  position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--paper-line);
  background: var(--surface);
}

.carousel-stage .media-frame{
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.carousel-stage .media-frame.active{
  opacity: 1;
  pointer-events: auto;
}

.carousel-empty code{
  font-family: var(--font-data);
  background: var(--paper);
  border: 1px solid var(--paper-line);
  padding: 1px 5px;
}
.carousel-empty{
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  background-image: repeating-linear-gradient(
    45deg,
    var(--paper-line) 0,
    var(--paper-line) 1px,
    transparent 1px,
    transparent 10px
  );
}
.carousel-stage.has-photos .carousel-empty{ display: none; }

.carousel-nav{
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
}

.carousel-btn{
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: 10px 18px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.carousel-btn:hover{ background: var(--ink); color: var(--paper); }
.carousel-btn:disabled{
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}

.carousel-count{
  font-family: var(--font-data);
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{
  max-width: var(--max);
  margin: 0 auto;
  padding: 44px var(--edge) 72px;
  border-top: 1px solid var(--paper-line);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-inner{
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-name{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
}

.footer-email{
  font-family: var(--font-data);
  font-size: 13.5px;
  color: var(--blue);
}
.footer-email:hover{ color: var(--ink); }

.footer-meta{
  color: var(--ink-soft);
  font-size: 12px;
}