/* ============================================================================
   CosyPrints — design system  ·  "Brutalist luxury, domestically warmed"
   ----------------------------------------------------------------------------
   Paper & ink palette · one terracotta accent · Fraunces display serif ·
   Hanken Grotesk body · IBM Plex Mono for technical labels.
   Sharp 90° corners, hairline rules, asymmetric editorial rhythm, calm motion.
   Shared by index / boutique / engagement.
   ========================================================================== */

/* ---- Palette: LIGHT (paper) is the default ---- */
:root {
  --paper:    #f3efe6;   /* warm off-white ground */
  --paper-2:  #eae4d8;   /* recessed panel */
  --ink:      #1c1a16;   /* warm near-black, primary text */
  --ink-soft: #6a6256;   /* muted warm grey, secondary text (AA on paper) */
  --line:     #d4cdbf;   /* hairline rule */
  --line-2:   #c2b9a8;   /* stronger hairline */
  --accent:   #aa4a27;   /* terracotta — used sparingly, AA on paper */
  --accent-2: #8f3d1f;   /* deeper terracotta for active/hover text */

  --vinted:   #007782;   /* platform marks, kept muted */
  --lbc:      #e8590c;

  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --body:    "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  --maxw: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --rule: 1px solid var(--line);

  color-scheme: light;
}

/* ---- Palette: DARK (ink) — opt-in via [data-theme="dark"]; follows OS too ---- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #19160f; --paper-2: #221e16; --ink: #ece6d8; --ink-soft: #a59a87;
    --line: #322d24; --line-2: #46402f; --accent: #d4794f; --accent-2: #e08c63;
    --vinted: #2bb3bd; --lbc: #ff7a3c;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #19160f; --paper-2: #221e16; --ink: #ece6d8; --ink-soft: #a59a87;
  --line: #322d24; --line-2: #46402f; --accent: #d4794f; --accent-2: #e08c63;
  --vinted: #2bb3bd; --lbc: #ff7a3c;
  color-scheme: dark;
}

/* ============================ Reset / base ============================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }
@media (min-width: 700px) { html { scroll-padding-top: 96px; } }

body {
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
::selection { background: var(--accent); color: var(--paper); }

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

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

.rule { border: 0; border-top: var(--rule); }

/* Section scaffold: a section opens with a hairline + a mono index/label row */
.section { padding-block: clamp(56px, 9vw, 132px); border-top: var(--rule); }
.section--plain { padding-block: clamp(56px, 9vw, 132px); }

.section-head { display: grid; grid-template-columns: minmax(0,1fr); gap: 18px; margin-bottom: clamp(36px, 6vw, 72px); }
@media (min-width: 860px) {
  .section-head { grid-template-columns: 220px minmax(0,1fr); gap: 40px; align-items: start; }
}
.section-head__index { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-soft); padding-top: 0.6em; }
.section-head__title { font-family: var(--display); font-weight: 400; font-size: clamp(2rem, 5.2vw, 3.4rem); line-height: 1.04; letter-spacing: -0.015em; }
.section-head__title em { font-style: italic; color: var(--accent); }
.section-head__lead { color: var(--ink-soft); margin-top: 18px; max-width: 52ch; font-size: 1.05rem; }

/* ============================ Type helpers ============================ */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-soft);
}
.eyebrow--accent { color: var(--accent); }

.display { font-family: var(--display); font-weight: 400; letter-spacing: -0.015em; line-height: 1.03; }
.serif-italic { font-style: italic; }

/* Technical metadata list (mono key / value, hairline separated) */
.meta-list { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.02em; }
.meta-list div { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-top: var(--rule); color: var(--ink-soft); }
.meta-list div:last-child { border-bottom: var(--rule); }
.meta-list b { color: var(--ink); font-weight: 500; }

/* ============================ Links / actions ============================ */
/* Editorial text link with a drawn underline + arrow that nudges */
.tlink { display: inline-flex; align-items: baseline; gap: 0.5ch; color: var(--ink); font-weight: 500;
  background-image: linear-gradient(currentColor, currentColor); background-size: 0% 1px;
  background-repeat: no-repeat; background-position: 0 100%; transition: background-size .35s ease, color .2s ease; }
.tlink:hover, .tlink:focus-visible { background-size: 100% 1px; color: var(--accent); }
.tlink .arr { transition: transform .25s ease; }
.tlink:hover .arr { transform: translateX(4px); }

/* Squared "button" — used rarely, deliberate. Sharp corners, hairline. */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 16px 26px; border: 1px solid var(--ink); color: var(--ink); background: transparent;
  border-radius: 0; transition: background .25s ease, color .25s ease, border-color .25s ease;
}
.btn:hover, .btn:focus-visible { background: var(--ink); color: var(--paper); }
.btn--accent { border-color: var(--accent); color: var(--paper); background: var(--accent); }
.btn--accent:hover, .btn--accent:focus-visible { background: var(--accent-2); border-color: var(--accent-2); }
.btn .arr { width: 14px; height: 14px; }

/* ============================ Site header ============================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: var(--rule);
}
.site-header__bar { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 64px; }
.wordmark { font-family: var(--display); font-weight: 500; font-size: 1.18rem; letter-spacing: 0.01em; white-space: nowrap; }
.wordmark .dot { color: var(--accent); }

.nav { display: none; }
@media (min-width: 860px) {
  .nav { display: flex; align-items: center; gap: 30px; }
  .nav a { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft);
    padding-block: 6px; border-bottom: 1px solid transparent; transition: color .2s ease, border-color .2s ease; }
  .nav a:hover, .nav a[aria-current="page"] { color: var(--ink); border-color: var(--accent); }
}

.header-controls { display: flex; align-items: center; gap: 6px; }
.ctrl {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-soft); padding: 8px 10px; border: 1px solid transparent;
  display: inline-flex; align-items: center; gap: 7px; transition: color .2s ease, border-color .2s ease;
}
.ctrl:hover { color: var(--ink); border-color: var(--line); }
.ctrl svg { width: 15px; height: 15px; }
.ctrl .i-moon { display: none; }
:root[data-theme="dark"] .ctrl .i-sun { display: none; }
:root[data-theme="dark"] .ctrl .i-moon { display: block; }
.no-js .ctrl--theme, .no-js .ctrl--lang { display: none; }

/* Mobile menu button (squared) */
.menu-btn { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border: 1px solid var(--line); color: var(--ink); }
@media (min-width: 860px) { .menu-btn { display: none; } }
.menu-btn__box { position: relative; width: 18px; height: 12px; }
.menu-btn__bar { position: absolute; left: 0; width: 18px; height: 1.5px; background: currentColor; transition: transform .25s ease, opacity .2s ease; }
.menu-btn__bar:nth-child(1) { top: 0; } .menu-btn__bar:nth-child(2) { top: 5px; } .menu-btn__bar:nth-child(3) { top: 10px; }
.menu-btn[aria-expanded="true"] .menu-btn__bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-btn__bar:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] .menu-btn__bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* Mobile drawer — full-width, paper, hairline rows */
.mobile-nav { display: none; border-top: var(--rule); }
.mobile-nav.is-open { display: block; }
@media (min-width: 860px) { .mobile-nav { display: none !important; } }
.mobile-nav a { display: flex; align-items: center; justify-content: space-between;
  font-family: var(--display); font-size: 1.4rem; padding: 18px var(--gutter); border-bottom: var(--rule); }
.mobile-nav a .idx { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; color: var(--ink-soft); }

/* ============================ Footer ============================ */
.site-footer { border-top: 1px solid var(--ink); padding-block: clamp(48px, 7vw, 96px) 40px; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 760px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; } }
.footer-grid h4 { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 18px; }
.footer-brand .wordmark { font-size: 1.6rem; }
.footer-brand p { color: var(--ink-soft); margin-top: 14px; max-width: 38ch; font-size: 0.95rem; }
.footer-list { display: flex; flex-direction: column; gap: 12px; }
.footer-list a { color: var(--ink); width: fit-content; }
.footer-list a:hover { color: var(--accent); }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 8px 28px; justify-content: space-between;
  margin-top: clamp(40px, 6vw, 72px); padding-top: 22px; border-top: var(--rule);
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.06em; color: var(--ink-soft); text-transform: uppercase; }

/* ============================ Calm motion ============================ */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s cubic-bezier(.2,.6,.2,1), transform .7s cubic-bezier(.2,.6,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Skip link */
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 400; background: var(--ink); color: var(--paper);
  padding: 10px 16px; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase;
  transform: translateY(-150%); transition: transform .2s ease; }
.skip-link:focus-visible { transform: none; }