/* ==========================================================================
   tayfuner.com — Swiss Modernism / International Typographic Style
   12-column grid · Helvetica · black / white / red · 8px baseline
   ========================================================================== */

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --paper: #f5f5f5;
  --grey: #6b6b6b;
  --line: #d9d9d9;
  --red: #e30613;
  --max: 1280px;
  --pad: 1.5rem;
  --gap: 1.5rem;
  --u: 0.5rem;               /* 8px base unit */
  --section: clamp(2.5rem, 5vw, 4.5rem);
  --font: "Helvetica Neue", Helvetica, "Nimbus Sans", "Nimbus Sans L", Arial, "Liberation Sans", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}

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

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1.5rem; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.05; letter-spacing: -0.02em; }
::selection { background: var(--red); color: var(--white); }

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

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--black); color: var(--white); padding: 0.75rem 1rem; z-index: 500;
}
.skip:focus { left: var(--pad); }

/* ---------- grid ---------- */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); }

/* optional grid overlay: press "g" */
.grid-overlay {
  position: fixed; inset: 0; pointer-events: none; z-index: 400; display: none;
}
.grid-overlay .wrap { height: 100%; }
.grid-overlay .grid { height: 100%; }
.grid-overlay span { background: rgba(227, 6, 19, 0.07); border-left: 1px solid rgba(227,6,19,.25); border-right: 1px solid rgba(227,6,19,.25); }
body.show-grid .grid-overlay { display: block; }

/* ---------- typographic atoms ---------- */
.label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.4;
}
.muted { color: var(--grey); }
.red { color: var(--red); }
.num { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0; }
.page-head h1::after, .hero h1::after { content: ""; display: block; width: 2.5rem; height: 3px; background: var(--red); margin-top: 0.75rem; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--white);
  border-bottom: 2px solid var(--black);
}
.site-header .grid { align-items: end; padding-top: 1.25rem; padding-bottom: 1rem; }
.brand {
  grid-column: 1 / span 4;
  display: flex; align-items: baseline; gap: 0.75rem;
  font-weight: 700; font-size: 1.125rem; letter-spacing: -0.01em; text-transform: uppercase;
}
.brand small { font-weight: 400; font-size: 0.75rem; letter-spacing: 0.08em; color: var(--grey); }

.nav { grid-column: 5 / span 7; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; justify-content: flex-end; }
.nav a {
  font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 0.25rem 0; border-bottom: 2px solid transparent; transition: border-color .15s, color .15s;
}
.nav a:hover { border-color: var(--black); }
.nav a[aria-current="page"] { border-color: var(--red); }

.lang { grid-column: 12 / span 1; display: flex; justify-content: flex-end; gap: 0.25rem; font-size: 0.8125rem; font-weight: 700; }
.lang a, .lang span { padding: 0.125rem 0.375rem; border: 1px solid var(--black); line-height: 1.3; }
.lang span[aria-current] { background: var(--black); color: var(--white); }
.lang a:hover { background: var(--red); border-color: var(--red); color: var(--white); }

.menu-toggle {
  display: none; background: none; border: 2px solid var(--black); font: inherit; font-weight: 700;
  font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.375rem 0.625rem; cursor: pointer;
}

/* ---------- hero ---------- */
.hero { padding: var(--section) 0 calc(var(--section) * 0.6); border-bottom: 1px solid var(--black); }
.hero .kicker { grid-column: 1 / -1; margin-bottom: 1rem; }
.hero h1 {
  grid-column: 1 / -1;
  font-size: clamp(1.875rem, 3.6vw, 2.75rem);
  line-height: 1;
  letter-spacing: -0.035em;
  font-weight: 700;
}
.hero .lede { grid-column: 1 / span 7; margin-top: 1.5rem; font-size: clamp(1rem, 1.2vw, 1.125rem); line-height: 1.55; }
.hero .facts { grid-column: 9 / span 4; margin-top: 1.5rem; }
.facts dl { margin: 0; }
.facts dt { font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--grey); }
.facts dd { margin: 0 0 1rem; font-weight: 500; }

/* page hero (inner pages) */
.page-head { padding: calc(var(--section) * 0.6) 0 1.75rem; border-bottom: 1px solid var(--black); }
.page-head h1 { grid-column: 1 / -1; font-size: clamp(1.5rem, 2.6vw, 2rem); line-height: 1.1; letter-spacing: -0.02em; }
.page-head .intro { grid-column: 1 / span 8; margin-top: 1.5rem; font-size: 1rem; line-height: 1.55; color: var(--black); }

/* ---------- sections ---------- */
.section { padding: var(--section) 0; border-bottom: 1px solid var(--black); }
.section:last-of-type { border-bottom: 0; }
.section-head { grid-column: 1 / -1; margin-bottom: 1.25rem; }
.section-head h2 { font-size: 1.375rem; letter-spacing: -0.02em; margin-top: 0.25rem; }
.section-head .label .num { font-size: 0.8125rem; }
.section-body { grid-column: 1 / -1; }
.section--paper { background: var(--paper); }
.section--black { background: var(--black); color: var(--white); border-bottom-color: var(--black); }
.section--black .muted { color: #9a9a9a; }

/* quote block (home) */
.quote { grid-column: 1 / span 10; }
.quote blockquote { margin: 0; }
.quote .q-main { font-size: clamp(1.125rem, 1.8vw, 1.375rem); line-height: 1.35; letter-spacing: -0.015em; font-weight: 700; margin-bottom: 1.5rem; }
.quote .q-alt { display: grid; grid-template-columns: repeat(9, minmax(0,1fr)); column-gap: var(--gap); }
.quote .q-alt p { grid-column: span 4; font-size: 1rem; color: #bdbdbd; margin: 0 0 1rem; }
.quote .q-alt p:nth-child(2) { grid-column: 6 / span 4; }
.quote cite { display: block; margin-top: 2rem; font-style: normal; }
.q-mark { color: var(--red); }

/* index rows (lists of writings, publications, press) */
.rows { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--black); }
.row {
  display: grid; grid-template-columns: 5rem minmax(0, 1fr) 12rem; column-gap: var(--gap);
  padding: 0.875rem 0; border-bottom: 1px solid var(--line); align-items: baseline;
}
.row .r-num { font-family: var(--mono); font-size: 0.75rem; color: var(--grey); }
.row .r-title { font-size: 1rem; font-weight: 700; letter-spacing: -0.015em; line-height: 1.25; }
.row .r-title a { background-image: linear-gradient(var(--red), var(--red)); background-size: 0 2px; background-repeat: no-repeat; background-position: 0 100%; transition: background-size .25s; }
.row .r-title a:hover { background-size: 100% 2px; }
.row .r-sub { display: block; font-size: 0.9375rem; font-weight: 400; color: var(--grey); letter-spacing: 0; margin-top: 0.375rem; line-height: 1.45; }
.row .r-meta { font-size: 0.8125rem; text-align: right; color: var(--black); }
.row .r-meta small { display: block; color: var(--grey); font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; }
.row .tag { display: inline-block; font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; border: 1px solid currentColor; padding: 0 0.3rem; margin-left: 0.5rem; vertical-align: 0.2em; }
.row .tag--red { color: var(--red); }

/* book modules */
.books { display: grid; grid-template-columns: repeat(9, minmax(0,1fr)); column-gap: var(--gap); row-gap: 2rem; }
.book { grid-column: span 4; display: grid; grid-template-columns: 7.5rem 1fr; column-gap: 1.5rem; align-items: start; }
.book:nth-child(2) { grid-column: 6 / span 4; margin-top: 2rem; }
.book img { width: 7.5rem; box-shadow: 0.5rem 0.5rem 0 var(--red); }
.book h3 { font-size: 1.25rem; letter-spacing: -0.02em; }
.book p { font-size: 0.9375rem; margin: 0.75rem 0 1rem; }

.more { display: inline-flex; gap: 0.5rem; align-items: center; font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; border-bottom: 2px solid var(--black); padding-bottom: 0.125rem; }
.more::after { content: "→"; transition: transform .15s; }
.more:hover { color: var(--red); border-color: var(--red); }
.more:hover::after { transform: translateX(4px); }

/* book detail page */
.book-detail { padding: var(--section) 0; border-bottom: 1px solid var(--black); }
.book-detail .cover { grid-column: 1 / span 2; }
.book-detail .cover img { width: 100%; max-width: 7rem; box-shadow: 0.5rem 0.5rem 0 var(--red); image-rendering: auto; }
.book-detail .cover .label { margin-top: 1rem; }
.book-detail .text { grid-column: 3 / span 7; }
.book-detail h2 { font-size: clamp(1.375rem, 2.2vw, 1.75rem); letter-spacing: -0.02em; margin-bottom: 0.5rem; }
.book-detail .gloss { font-size: 1rem; color: var(--grey); margin-bottom: 1.5rem; }
.book-detail .source { font-size: 0.8125rem; color: var(--grey); }

/* prose */
.prose { max-width: 68ch; font-size: 1rem; line-height: 1.7; }
.prose p { margin-bottom: 1.25em; hyphens: auto; }
.prose .lead { font-size: 1.0625rem; line-height: 1.6; letter-spacing: 0; }
.prose h3 { font-size: 1.125rem; margin: 2.5rem 0 1rem; letter-spacing: -0.015em; }
.prose h4 { font-size: 0.8125rem; letter-spacing: 0.08em; text-transform: uppercase; margin: 3rem 0 1rem; color: var(--red); }
.prose .q { font-weight: 700; margin-bottom: 0.5rem; }
.prose .dialogue { border-left: 2px solid var(--red); padding-left: 1.5rem; margin: 2rem 0; font-size: 1rem; }
.prose .dialogue p { margin-bottom: 0.625em; }
.prose blockquote { margin: 2rem 0; padding: 0 0 0 1.5rem; border-left: 2px solid var(--black); font-style: normal; }
.prose .fn { font-size: 0.8125rem; color: var(--grey); border-top: 1px solid var(--line); padding-top: 1rem; margin-top: 3rem; }
.prose .fn p { margin-bottom: 0.375rem; }

/* article layout */
.article { padding: calc(var(--section) * 0.75) 0 var(--section); }
.article .meta { grid-column: 1 / -1; margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.article .meta dl { margin: 0; display: flex; flex-wrap: wrap; gap: 0.5rem 2.5rem; }
.article .meta dt { font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--grey); }
.article .meta dd { margin: 0 0 0.25rem; font-weight: 500; }
.article .meta dl > div { display: block; }
.article .body { grid-column: 1 / span 8; }
.article .aside { grid-column: 1 / span 8; margin-top: 2rem; }
.note {
  border-top: 2px solid var(--red); padding-top: 0.75rem; font-size: 0.875rem; color: var(--grey);
}

/* bio */
.bio-portrait { grid-column: 9 / span 4; grid-row: 1; position: relative; margin-bottom: 2.5rem !important; }
.bio-portrait .frame { position: relative; width: 10rem; }
.bio-portrait .frame::before { content: ""; position: absolute; left: 1rem; top: 1rem; width: 100%; height: 100%; background: var(--red); z-index: 0; }
.bio-portrait img { position: relative; z-index: 1; width: 100%; filter: grayscale(1) contrast(1.05); }
.bio-portrait figcaption { margin-top: 2.5rem; }
.bio-text { grid-column: 1 / span 7; grid-row: 1 / span 2; }
.bio-side { grid-column: 9 / span 4; grid-row: 2; }

.timeline { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--black); }
.timeline li { display: grid; grid-template-columns: 6rem 1fr; column-gap: var(--gap); padding: 0.625rem 0; border-bottom: 1px solid var(--line); }
.timeline .t-year { font-weight: 700; font-size: 1.0625rem; letter-spacing: -0.02em; }
.timeline .t-year.red { color: var(--grey); }

.pubs { list-style: none; margin: 0; padding: 0; }
.pubs li { font-size: 1rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; padding: 0.375rem 0; border-bottom: 1px solid var(--line); }

/* pdf archive tiles */
.tiles { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1.75rem var(--gap); }
.tile a { display: block; }
.tile .thumb { aspect-ratio: 4 / 5; overflow: hidden; background: var(--paper); border: 1px solid var(--black); }
.tile .thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; filter: grayscale(1); transition: filter .25s, transform .4s; }
.tile a:hover .thumb img { filter: none; transform: scale(1.02); }
.tile h3 { font-size: 1.0625rem; letter-spacing: -0.015em; margin-top: 1rem; line-height: 1.2; }
.tile p { margin: 0.375rem 0 0; font-size: 0.8125rem; color: var(--grey); }
.tile .num { color: var(--red); }

/* contact */
.contact-mail { grid-column: 1 / -1; }
.contact-mail a {
  font-size: clamp(1.125rem, 2vw, 1.5rem); font-weight: 700; letter-spacing: -0.015em; line-height: 1;
  word-break: break-word; border-bottom: 0.08em solid var(--black); transition: color .15s, border-color .15s;
}
.contact-mail a:hover { color: var(--red); border-color: var(--red); }
.contact-grid { grid-column: 1 / span 9; display: grid; grid-template-columns: repeat(9, minmax(0,1fr)); column-gap: var(--gap); margin-top: 2rem; }
.contact-grid > div { grid-column: span 3; border-top: 2px solid var(--black); padding-top: 0.75rem; }

/* gateway (root) */
.gate { min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; }
.gate main { flex: 1; display: flex; align-items: center; }
.gate .grid { width: 100%; }
.gate h1 { grid-column: 1 / span 12; font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1; letter-spacing: -0.03em; }
.gate .choose { grid-column: 1 / span 12; display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); column-gap: var(--gap); margin-top: 3rem; border-top: 2px solid var(--black); }
.gate .choose a { grid-column: span 6; display: block; padding: 1.5rem 0 1.5rem; border-bottom: 1px solid var(--line); transition: color .15s; }
.gate .choose a:hover { color: var(--red); }
.gate .choose strong { display: block; font-size: clamp(1.375rem, 2.5vw, 2rem); letter-spacing: -0.025em; line-height: 1.1; }
.gate .choose span { font-size: 0.875rem; color: var(--grey); }
.gate .bar { padding: 1.25rem 0; }

/* ---------- footer ---------- */
.site-footer { background: var(--black); color: var(--white); padding: 2.5rem 0 1.5rem; }
.site-footer .f-brand { grid-column: 1 / span 4; }
.site-footer .f-brand strong { display: block; font-size: 1.5rem; line-height: 1.1; letter-spacing: -0.02em; }
.site-footer .f-col { grid-column: span 2; }
.site-footer .f-col:first-of-type { grid-column: 7 / span 2; }
.site-footer ul { list-style: none; margin: 0.75rem 0 0; padding: 0; }
.site-footer li { margin-bottom: 0.25rem; font-size: 0.9375rem; }
.site-footer a:hover { color: var(--red); }
.site-footer .label { color: #9a9a9a; }
.site-footer .f-base { grid-column: 1 / -1; margin-top: 2rem; padding-top: 1rem; border-top: 1px solid #333; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; font-size: 0.75rem; color: #9a9a9a; }

/* ---------- 404 ---------- */
.nf h1 { font-size: clamp(3rem, 8vw, 5rem); letter-spacing: -0.03em; line-height: 1; color: var(--red); grid-column: 1 / span 12; }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .nav ul { gap: 0.25rem 1rem; }
  .hero .lede { grid-column: 1 / -1; }
  .hero .facts { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); column-gap: var(--gap); }
  .article .body, .article .aside { grid-column: 1 / -1; }
  .bio-portrait, .bio-text, .bio-side { grid-column: 1 / -1; grid-row: auto; }
  .bio-side { margin-top: 2rem; }
  .book-detail .text { grid-column: 3 / -1; }
  .tiles { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 767px) {
  :root { --pad: 1.25rem; --gap: 1rem; }
  .grid { grid-template-columns: minmax(0, 1fr); }
  .grid > * { grid-column: 1 / -1 !important; }
  .site-header .grid { grid-template-columns: 1fr auto auto; align-items: center; gap: 0.75rem; padding-top: 1rem; padding-bottom: 0.875rem; }
  .brand { grid-column: 1 / 2 !important; font-size: 1rem; }
  .brand small { display: none; }
  .lang { grid-column: 2 / 3 !important; grid-row: 1; }
  .menu-toggle { display: inline-block; grid-column: 3 / 4 !important; grid-row: 1; }
  .nav { grid-column: 1 / -1 !important; display: none; }
  .nav.open { display: block; }
  .nav ul { flex-direction: column; align-items: flex-start; gap: 0; border-top: 1px solid var(--black); margin-top: 0.75rem; }
  .nav li { width: 100%; border-bottom: 1px solid var(--line); }
  .nav a { display: block; padding: 0.875rem 0; font-size: 1rem; border: 0; }
  .nav a[aria-current="page"] { color: var(--red); }
  .hero .lede, .hero .facts { margin-top: 2rem; }
  .hero .facts { grid-template-columns: 1fr 1fr; }
  .hero .kicker, .page-head .kicker { padding-top: 0; margin-bottom: 1.5rem; }
  .section-head { margin-bottom: 1.5rem; }
  .quote .q-alt { grid-template-columns: 1fr; }
  .quote .q-alt p, .quote .q-alt p:nth-child(2) { grid-column: 1 / -1; }
  .row { grid-template-columns: 2.5rem minmax(0, 1fr); }
  .row .r-meta { grid-column: 2; text-align: left; margin-top: 0.5rem; }
  .row .r-title { font-size: 1.125rem; }
  .books { grid-template-columns: 1fr; }
  .book, .book:nth-child(2) { grid-column: 1 / -1; margin-top: 0; }
  .book-detail .cover { margin-bottom: 3rem; }
  .article .meta dl { position: static; display: grid; grid-template-columns: 1fr 1fr; column-gap: var(--gap); margin-bottom: 1.5rem; }
  .bio-portrait, .bio-text, .bio-side { grid-row: auto; }
  .bio-portrait { margin-bottom: 2rem; }
  .tiles { grid-template-columns: 1fr 1fr; gap: 2rem var(--gap); }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-grid > div { grid-column: 1 / -1; margin-bottom: 1.5rem; }
  .gate .choose { grid-template-columns: 1fr; }
  .gate .choose a { grid-column: 1 / -1; }
  .site-footer .f-col, .site-footer .f-col:first-of-type { margin-top: 2rem; }
  .prose { font-size: 1rem; }
}

@media (max-width: 420px) {
  .tiles { grid-template-columns: 1fr; }
}

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

@media print {
  .site-header, .site-footer, .grid-overlay, .menu-toggle { display: none !important; }
  .section, .hero, .page-head { border: 0; padding: 1.5rem 0; }
  a { text-decoration: underline; }
}