/* =====================================================================
   Kıvanç Taşcı · portfolyo
   Brand register, monograph / catalogue lane.
   Single-family voice: Hanken Grotesk, opsz/weight contrast.
   OKLCH warm cream surface, deep ink, restrained oxblood accent.
   ===================================================================== */

:root {
  color-scheme: light;

  /* color — OKLCH, tinted neutrals, restrained palette */
  --paper:      oklch(0.965 0.012 78);
  --paper-deep: oklch(0.935 0.018 76);
  --ink:        oklch(0.18  0.014 50);
  --ink-soft:   oklch(0.42  0.018 55);
  --rule:       oklch(0.82  0.018 70);
  --accent:     oklch(0.46  0.135 32);
  --accent-ink: oklch(0.32  0.110 30);

  /* topbar height — used by scroll-margin so anchored sections clear it */
  --topbar-h: 3.4rem;

  /* type — one family, weight + scale do the talking */
  --sans: "Hanken Grotesk", ui-sans-serif, system-ui, sans-serif;

  /* scale (1.25-ish step, hero takes a bigger jump) */
  --t-xs:   0.75rem;
  --t-sm:   0.875rem;
  --t-b:    1.0625rem;
  --t-lg:   1.375rem;
  --t-xl:   1.75rem;
  --t-2xl:  2.25rem;
  --t-3xl:  3rem;
  --t-4xl:  clamp(3.5rem, 9vw, 7rem);
  --t-hero: clamp(5rem, 16vw, 15rem);

  /* layout */
  --gutter: clamp(1.25rem, 3vw, 2.5rem);

  /* motion */
  --ease-out:       cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
}

* { box-sizing: border-box; }

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

/* Anchored sections clear the sticky topbar when navigated to. */
:where(#works, #awards, #about, #contact, [id^="cat-"]) { scroll-margin-top: var(--topbar-h); }

/* Skip link — invisible until focused. */
.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 200;
  padding: 0.6rem 0.9rem;
  background: var(--ink);
  color: var(--paper);
  font-size: var(--t-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 2px;
  transform: translateY(-150%);
  transition: transform 0.25s var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--t-b);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;

  /* subtle paper grain */
  background-image:
    radial-gradient(oklch(0.92 0.016 75 / 0.55) 1px, transparent 1px),
    radial-gradient(oklch(0.99 0.012 80 / 0.45) 1px, transparent 1px);
  background-size: 3px 3px, 5px 5px;
  background-position: 0 0, 1px 1px;
}

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

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

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

/* =====================================================================
   TOP BAR
   ===================================================================== */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: clamp(1rem, 4vw, 3rem);
  padding: 1.1rem var(--gutter) 0.9rem;
  background: color-mix(in oklch, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid color-mix(in oklch, var(--rule) 50%, transparent);
}

.mark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.mark-glyph {
  display: inline-grid;
  place-items: center;
  width: 1.55rem;
  height: 1.55rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  font-size: 0.95rem;
  line-height: 1;
}
.mark-name { font-size: var(--t-sm); letter-spacing: -0.01em; }

.nav {
  display: flex;
  gap: clamp(1rem, 2.5vw, 2.2rem);
  justify-self: center;
  font-size: var(--t-sm);
  font-weight: 500;
}
.nav a {
  position: relative;
  padding: 0.25rem 0;
  color: var(--ink-soft);
  transition: color 0.25s var(--ease-out);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right 0.4s var(--ease-out-quart);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { right: 0; }

.lang {
  display: inline-flex;
  gap: 0.4rem;
  align-items: baseline;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-soft);
  padding: 0.25rem 0.4rem;
}
.lang-opt { transition: color 0.25s var(--ease-out); }
.lang-opt.is-on { color: var(--ink); font-weight: 800; }
.lang-sep { color: var(--rule); }

@media (max-width: 720px) {
  .topbar { grid-template-columns: auto auto; row-gap: 0.5rem; }
  .nav {
    grid-column: 1 / -1;
    justify-self: start;
    gap: clamp(0.9rem, 4vw, 1.6rem);
    font-size: var(--t-xs);
    letter-spacing: 0.05em;
  }
}

/* =====================================================================
   HERO — image-led split. Pull-quote left, photograph right.
   ===================================================================== */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  grid-template-rows: minmax(min(82vh, 760px), 1fr);
  position: relative;
}

.hero-text {
  padding:
    clamp(4rem, 9vw, 8rem)
    clamp(2rem, 5vw, 5rem)
    clamp(2.5rem, 5vw, 4rem)
    var(--gutter);
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.hero-eyebrow {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.hero-eyebrow .dot {
  width: 0.4rem; height: 0.4rem;
  background: var(--accent);
  display: inline-block;
}

.hero-quote {
  margin: 0;
  align-self: end;
  max-width: 18ch;
  font-size: clamp(2rem, 4.6vw, 4.25rem);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -0.035em;
  color: var(--ink);
}

/* hero-byline is an h1 — visual hierarchy stays small,
   document outline is correct */
.hero-byline {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: clamp(0.8rem, 2vw, 1.5rem);
  flex-wrap: wrap;
  font-size: var(--t-b);
  font-weight: 400;
}
.hero-byline-name {
  font-weight: 800;
  letter-spacing: -0.025em;
  font-size: var(--t-lg);
}
.hero-byline-years {
  font-feature-settings: "tnum";
  font-weight: 500;
  color: var(--ink-soft);
  font-size: var(--t-sm);
  letter-spacing: 0.01em;
}
.hero-byline-years .arrow-soft { color: var(--accent); }

.hero-scroll {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  justify-self: start;
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--ink);
  transition: gap 0.4s var(--ease-out-quart),
              color 0.25s var(--ease-out),
              border-color 0.25s var(--ease-out);
}
.hero-scroll:hover {
  gap: 1.2rem;
  color: var(--accent);
  border-color: var(--accent);
}
.hero-scroll .arrow { transition: transform 0.5s var(--ease-out-quart); }
.hero-scroll:hover .arrow { transform: translateY(3px); }

/* Hero photo column — img absolute-positioned so the cell doesn't
   collapse before the image loads its intrinsic size.
   object-fit: contain so the photo is never cropped; the deeper
   paper background functions as a passe-partout / monograph mat. */
.hero-image {
  margin: 0;
  position: relative;
  overflow: hidden;
  background: var(--paper-deep);
  min-height: min(82vh, 760px);
  padding: clamp(1.25rem, 2.5vw, 2.25rem);
}
.hero-img {
  position: absolute;
  inset: clamp(1.25rem, 2.5vw, 2.25rem);
  width: auto;
  height: auto;
  max-width: calc(100% - 2 * clamp(1.25rem, 2.5vw, 2.25rem));
  max-height: calc(100% - 2 * clamp(1.25rem, 2.5vw, 2.25rem));
  margin: auto;
  object-fit: contain;
  object-position: center;
  display: block;
  filter: saturate(0.96);
  opacity: 0;
  transition: opacity 0.7s var(--ease-out-quart);
}
.hero-img.is-loaded { opacity: 1; }
.hero-img-cap {
  position: absolute;
  bottom: clamp(1rem, 2vw, 1.4rem);
  left: clamp(1.25rem, 2.5vw, 2.25rem);
  right: clamp(1.25rem, 2.5vw, 2.25rem);
  color: var(--ink-soft);
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* No-photo fallback: collapse to single column */
.hero.is-no-photo { grid-template-columns: 1fr; }
.hero.is-no-photo .hero-image { display: none; }

/* Mobile stack */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: 62vh auto;
    min-height: auto;
  }
  .hero-image {
    order: -1;
    min-height: 0;
    padding: clamp(1rem, 3vw, 1.5rem);
  }
  .hero-img {
    inset: clamp(1rem, 3vw, 1.5rem);
    max-width: calc(100% - 2 * clamp(1rem, 3vw, 1.5rem));
    max-height: calc(100% - 2 * clamp(1rem, 3vw, 1.5rem));
  }
  .hero-text {
    padding-top: clamp(2rem, 5vw, 3rem);
    padding-right: var(--gutter);
  }
  .hero-quote { font-size: clamp(2rem, 6.5vw, 3.25rem); }
}

/* Hero entrance — staggered, ease-out-quart, no bounce */
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.hero-eyebrow, .hero-quote, .hero-byline, .hero-scroll {
  animation: rise 0.9s var(--ease-out-quart) both;
}
.hero-image {
  animation: fade 1.2s var(--ease-out-quart) both;
  animation-delay: 0.1s;
}
.hero-eyebrow   { animation-delay: 0.05s; }
.hero-quote     { animation-delay: 0.25s; }
.hero-byline    { animation-delay: 0.50s; }
.hero-scroll    { animation-delay: 0.70s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* =====================================================================
   SECTION HEADER — number + title, no italic meta repeat
   ===================================================================== */

.section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: end;
  gap: clamp(1rem, 3vw, 2rem);
  padding: clamp(2.5rem, 6vw, 4rem) var(--gutter) clamp(1.5rem, 3vw, 2.2rem);
  border-bottom: 1px solid var(--rule);
}
.section-num {
  font-feature-settings: "tnum";
  font-size: var(--t-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
}
.section-title {
  margin: 0;
  font-size: var(--t-3xl);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1;
}
.section-meta { display: none; }

/* =====================================================================
   WORKS — index + galleries
   ===================================================================== */

.cat-index {
  list-style: none;
  margin: 0;
  padding: clamp(1rem, 3vw, 2rem) var(--gutter) clamp(3rem, 7vw, 5rem);
}
.cat { border-bottom: 1px solid var(--rule); }
.cat:first-child { border-top: 1px solid var(--rule); }

.cat-link {
  display: grid;
  grid-template-columns: 4rem 1fr auto;
  align-items: baseline;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: clamp(1.1rem, 2.8vw, 1.8rem) 0.2rem;
  transition: padding-left 0.5s var(--ease-out-quart), color 0.25s var(--ease-out);
}
.cat-link:hover { padding-left: 1.4rem; color: var(--accent); }

.cat-num {
  font-feature-settings: "tnum";
  font-size: var(--t-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
.cat-name {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
}
.cat-tr { display: inline; }
.cat-en {
  display: inline;
  margin-left: 0.5em;
  font-weight: 300;
  color: var(--ink-soft);
  font-size: 0.55em;
  letter-spacing: -0.01em;
}
html[lang="en"] .cat-tr { display: none; }
html[lang="en"] .cat-en {
  color: var(--ink);
  font-weight: 800;
  margin-left: 0;
  font-size: 1em;
}

.cat-count {
  font-feature-settings: "tnum";
  font-size: var(--t-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

/* Galleries */
.galleries { padding: 0 var(--gutter) clamp(3rem, 8vw, 6rem); }
.gallery {
  padding: clamp(3rem, 7vw, 6rem) 0;
  border-top: 1px solid var(--rule);
}
.gallery:first-child { border-top: 0; }

.gallery-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}
.gallery-num {
  font-feature-settings: "tnum";
  font-size: var(--t-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
}
.gallery-title {
  margin: 0;
  font-size: var(--t-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.t-en {
  margin-left: 0.5em;
  font-weight: 300;
  color: var(--ink-soft);
  font-size: 0.7em;
}
html[lang="en"] .t-tr { display: none; }
html[lang="en"] .t-en { color: var(--ink); font-weight: 800; margin-left: 0; font-size: 1em; }

/* Native-aspect masonry — CSS multi-column.
   Each photo keeps its file's own aspect ratio. */
.grid {
  column-count: 3;
  column-gap: clamp(0.75rem, 1.8vw, 1.25rem);
}
.grid-cell {
  break-inside: avoid;
  page-break-inside: avoid;
  margin: 0 0 clamp(0.75rem, 1.8vw, 1.25rem);
  position: relative;
  overflow: hidden;
  background: var(--paper-deep);
  cursor: zoom-in;
}
.grid-cell img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.9s var(--ease-out-quart), filter 0.6s var(--ease-out);
  filter: saturate(0.95);
}
.grid-cell:hover img { transform: scale(1.025); filter: saturate(1.05); }

@media (max-width: 1100px) { .grid { column-count: 2; } }
@media (max-width: 600px)  { .grid { column-count: 1; } }

.grid-empty {
  margin: 0;
  padding: 1.5rem 0 0;
  color: var(--ink-soft);
  font-size: var(--t-b);
}
.gallery:has(.grid-cell) .grid-empty { display: none; }

.noscript-note {
  margin: 0;
  padding: clamp(1.5rem, 4vw, 2.5rem) 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  color: var(--ink-soft);
  font-size: var(--t-b);
  max-width: 52ch;
}
.noscript-note span[lang="en"] { display: block; margin-top: 0.5em; }
.noscript-note a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 0.18em; }

/* =====================================================================
   AWARDS
   ===================================================================== */

.award-list {
  list-style: none;
  margin: 0;
  padding: clamp(1.5rem, 4vw, 2.5rem) var(--gutter) clamp(3rem, 7vw, 5rem);
}
.award {
  display: grid;
  grid-template-columns: 6rem 1fr auto;
  align-items: baseline;
  gap: clamp(1rem, 3vw, 2rem);
  padding: clamp(1.4rem, 3.2vw, 2.2rem) 0;
  border-bottom: 1px solid var(--rule);
}
.award:first-child { border-top: 1px solid var(--rule); }

.award-year {
  font-feature-settings: "tnum";
  font-size: var(--t-lg);
  font-weight: 800;
  color: var(--accent);
}
.award-name {
  font-size: clamp(1.5rem, 3.6vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.award-rank {
  font-size: var(--t-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

@media (max-width: 640px) {
  .award { grid-template-columns: 4rem 1fr; }
  .award-rank { grid-column: 2; }
}

/* =====================================================================
   ABOUT
   ===================================================================== */

.about-body {
  padding: clamp(2rem, 5vw, 3.5rem) var(--gutter) clamp(3rem, 7vw, 5rem);
  max-width: 60ch;
  margin-left: clamp(1rem, 14vw, 11rem);
}
.about-body p {
  margin: 0 0 1.4em;
  font-size: var(--t-lg);
  line-height: 1.55;
}
.about-body p:last-child { margin-bottom: 0; }
.about-lede {
  font-size: var(--t-xl) !important;
  font-weight: 700;
  line-height: 1.3 !important;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.about-lede em {
  font-style: normal;
  color: var(--accent-ink);
}

@media (max-width: 700px) {
  .about-body { margin-left: 0; }
}

/* =====================================================================
   CONTACT
   ===================================================================== */

.contact-list {
  list-style: none;
  margin: 0;
  padding: clamp(2rem, 5vw, 3rem) var(--gutter) clamp(4rem, 8vw, 6rem);
}
.contact-row {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: clamp(1rem, 3vw, 2rem);
  padding: clamp(1.4rem, 3.2vw, 2rem) 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.contact-row:first-child { border-top: 1px solid var(--rule); }
.contact-label {
  font-size: var(--t-sm);
  font-weight: 500;
  letter-spacing: 0;
  color: var(--ink-soft);
  text-transform: none;
}
.contact-value {
  font-size: clamp(1.5rem, 3.8vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  position: relative;
  width: max-content;
  max-width: 100%;
  line-height: 1.05;
}
.contact-value::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -0.1em;
  height: 1px;
  background: var(--accent);
  transition: right 0.5s var(--ease-out-quart);
}
.contact-value:hover { color: var(--accent-ink); }
.contact-value:hover::after { right: 0; }

@media (max-width: 640px) {
  .contact-row { grid-template-columns: 1fr; gap: 0.3rem; }
}

/* =====================================================================
   FOOTER
   ===================================================================== */

.footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 2rem var(--gutter) 2.4rem;
  border-top: 1px solid var(--rule);
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-soft);
}
.foot-mark { color: var(--ink); font-weight: 600; }
.foot-mark .arrow-soft { color: var(--accent); }

/* =====================================================================
   LIGHTBOX
   ===================================================================== */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: oklch(0.14 0.012 50 / 0.96);
  display: grid;
  place-items: center;
  padding: clamp(2rem, 5vw, 4rem);
  opacity: 0;
  transition: opacity 0.35s var(--ease-out);
}
.lightbox:not([hidden]) { opacity: 1; }
.lightbox[hidden] { display: none; }

.lb-figure {
  margin: 0;
  display: grid;
  gap: 0.8rem;
  max-width: 100%;
  max-height: 100%;
}
.lb-img {
  max-width: 100%;
  max-height: 82vh;
  object-fit: contain;
  background: oklch(0.2 0.01 50);
  opacity: 0;
  transition: opacity 0.4s var(--ease-out-quart);
}
.lb-img.is-loaded { opacity: 1; }
.lb-cap {
  color: oklch(0.82 0.01 70);
  font-size: var(--t-sm);
  font-weight: 500;
  text-align: center;
}
.lb-close, .lb-prev, .lb-next {
  position: absolute;
  background: none;
  border: 1px solid oklch(0.7 0.01 60 / 0.5);
  color: oklch(0.95 0.005 60);
  width: 2.6rem; height: 2.6rem;
  border-radius: 50%;
  display: grid; place-items: center;
  cursor: pointer;
  font-size: 1.2rem;
  font-family: inherit;
  transition: background 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover {
  background: oklch(0.95 0.005 60 / 0.12);
  border-color: oklch(0.9 0.01 60 / 0.9);
}
.lb-close { top: 1.2rem; right: 1.2rem; }
.lb-prev  { left: 1.2rem; top: 50%; transform: translateY(-50%); }
.lb-next  { right: 1.2rem; top: 50%; transform: translateY(-50%); }

/* =====================================================================
   PRINT — flatten to a clean monograph contact sheet
   ===================================================================== */

@media print {
  :root { --paper: #fff; --ink: #1a1a1a; }
  body { background: #fff; background-image: none; color: #1a1a1a; }
  .topbar, .lang, .hero-scroll, .skip-link, .lightbox { display: none !important; }
  .hero { display: block; min-height: 0; }
  .hero-image { min-height: 0; padding: 0; }
  .hero-img { position: static; inset: auto; max-width: 100%; max-height: 60vh; opacity: 1; filter: none; }
  .section-head, .gallery { break-inside: avoid; }
  .grid { column-count: 2; }
  .grid-cell { break-inside: avoid; }
  .grid-cell img, .hero-img { filter: none; }
  a[href]::after { content: ""; }
}