/* "The Study": every page is objects on a green chess-club table. */
:root {
  --felt: #263a2e;
  --felt-light: #34503f;
  --felt-dark: #1c2b22;
  --paper: #f3eee3;
  --card: #fffef9;
  --ink: #1d1a16;
  --red: #b5352a;
  --pen: #23305f;
  --yellow: #FFC53D;
  --wood-light: #ecd3a5;
  --wood-dark: #b27b46;
  --frame: #5b3a1f;
  --grain: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .2  0 0 0 0 .16  0 0 0 0 .1  0 0 0 .07 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  --type: "Special Elite", "Noto Serif KR", monospace;
  --hand: Caveat, "Nanum Pen Script", cursive;
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; }

body {
  min-height: 100vh;
  color: #efe8d6;
  background: var(--grain), radial-gradient(ellipse at 30% 10%, var(--felt-light), var(--felt) 55%, var(--felt-dark));
  font: 1.125rem/1.5 "EB Garamond", "Noto Serif KR", Georgia, serif;
}

html:lang(ko) { word-break: keep-all; }
a { color: inherit; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.top {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 32px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 16px;
}
.wordmark { text-transform: uppercase; letter-spacing: .2em; font-weight: 500; text-decoration: none; }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 20px; }
.top nav a { text-decoration: none; opacity: .8; }
.top nav a[aria-current] { opacity: 1; text-decoration: underline; text-underline-offset: 3px; }

/* desk: a 12-column table on wide screens, one column on phones */
.desk {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 32px 64px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 32px 24px;
  align-items: start;
}

.item {
  position: relative;
  transform: rotate(var(--r, 0deg));
  transition: transform .25s ease;
  box-shadow: 0 16px 30px rgba(0, 0, 0, .4);
}
.item:hover { transform: rotate(var(--r, 0deg)) translateY(-4px); }

.letter { grid-column: 1 / 6; grid-row: 1 / 3; --r: -2deg; margin-top: 16px; padding: 36px 40px 34px; background: var(--grain), var(--paper); color: var(--ink); }
.letter h1 { font-weight: 400; font-size: clamp(1.6rem, 3vw, 2.1rem); line-height: 1.2; margin: 16px 0 18px; text-wrap: balance; }
.tw { font: .875rem/1.6 var(--type); color: #4a443a; }
.sig { display: inline-block; margin-top: 14px; transform: rotate(-3deg); font: 700 1.9rem var(--hand); color: var(--pen); }

.problem { grid-column: 6 / 10; grid-row: 1 / 3; position: relative; transform: rotate(4deg); margin-bottom: 80px; }

.board {
  container-type: inline-size;
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);
  aspect-ratio: 1;
  border: 16px solid var(--frame);
  box-shadow: 0 18px 30px rgba(0, 0, 0, .45), inset 0 0 0 1px rgba(0, 0, 0, .4);
}
.board button {
  appearance: none;
  border: 0;
  padding: 0;
  position: relative;
  display: grid;
  place-items: center;
  font: 10.5cqi/1 "Noto Sans Symbols 2", serif;
  cursor: pointer;
}
.board .light { background: var(--wood-light); }
.board .dark { background: var(--wood-dark); }
.board .black { color: #24180e; }
.board .white {
  color: #fbf6ea;
  text-shadow: 1px 0 #3a2615, -1px 0 #3a2615, 0 1px #3a2615, 0 -1px #3a2615, 1px 1px #3a2615, -1px -1px #3a2615, 1px -1px #3a2615, -1px 1px #3a2615;
}
.board .selected { box-shadow: inset 0 0 0 3px var(--red); }
.board .mated { box-shadow: inset 0 0 0 3px var(--red); background: #d98a77; }
.board button:focus-visible { outline: 3px solid var(--yellow); outline-offset: -3px; }
.board [data-rank]::before,
.board [data-file]::after { position: absolute; font: .7rem/1 "EB Garamond", Georgia, serif; color: #e9cfa0; text-shadow: none; }
.board [data-rank]::before { content: attr(data-rank); left: -11px; }
.board [data-file]::after { content: attr(data-file); bottom: -14px; }
.board .promo { position: absolute; z-index: 3; display: grid; background: var(--card); box-shadow: 0 8px 18px rgba(0, 0, 0, .45); }
.board .promo button { aspect-ratio: 1; background: var(--card); }
.board .promo button:hover { background: var(--wood-light); }

.tag {
  position: absolute;
  right: -40px;
  bottom: -96px;
  width: 210px;
  --r: -10deg;
  padding: 16px 16px 14px;
  background: var(--card);
  color: var(--ink);
  font: .875rem/1.45 var(--type);
}
.tag::before { content: ""; position: absolute; top: -9px; left: 50%; width: 18px; height: 18px; border-radius: 50%; background: var(--red); box-shadow: 0 3px 4px rgba(0, 0, 0, .4); }
.tag h2 { font: inherit; }
.tag .status { color: var(--red); }
.tag b { font-weight: 400; color: var(--red); }
.tag button { margin-top: 8px; font: inherit; color: var(--ink); background: none; border: 1px solid var(--ink); padding: 2px 10px; cursor: pointer; }

.pad {
  grid-column: 10 / 13; grid-row: 1;
  --r: 3deg;
  min-height: 250px;
  padding: 24px 18px 18px;
  background: repeating-linear-gradient(transparent 0 27px, rgba(35, 48, 95, .18) 27px 28px) 0 14px, #fdf7d9;
  color: var(--pen);
  font: 500 1.4rem/28px var(--hand);
}
.pad h2 { font: .95rem/28px var(--type); color: var(--red); }
.pad ul { list-style: none; padding: 0; }
:lang(ko) .pad { font-size: 1.5rem; }

.biz { grid-column: 10 / 13; grid-row: 2; align-self: end; --r: -3deg; display: grid; gap: 6px; padding: 18px 20px; background: var(--card); color: #4a443a; font-style: normal; font-size: 1rem; }
.biz .wordmark { color: var(--ink); font-size: .875rem; }

.polaroid, .stamp { display: block; text-decoration: none; }
.polaroid { grid-column: 1 / 4; grid-row: 3; justify-self: center; --r: -6deg; padding: 12px 12px 50px; background: #fdfcf8; }
.polaroid img { display: block; width: 190px; height: 230px; object-fit: cover; object-position: center 30%; }
.polaroid .caption { position: absolute; left: 0; right: 0; bottom: 10px; text-align: center; font: 700 1.6rem var(--hand); color: var(--pen); }
:lang(ko) .polaroid .caption { font-size: 1.9rem; }

.stamp { grid-column: 4 / 6; grid-row: 3; align-self: center; justify-self: center; width: 150px; --r: 7deg; padding: 6px; background: #fbf8f0; background-clip: padding-box; border: 7px dotted var(--felt); }
.stamp div { display: grid; place-items: center; gap: 4px; padding: 18px 8px; background: var(--yellow); text-align: center; color: #2b1f6b; font: 700 .75rem/1.25 "EB Garamond", "Noto Serif KR", serif; letter-spacing: .12em; text-transform: uppercase; }

.cards { grid-column: 6 / 13; grid-row: 3; position: relative; height: 290px; }
.card {
  position: absolute;
  width: 250px;
  height: 160px;
  padding: 26px 18px 12px;
  font: .85rem/24px var(--type);
  color: #2a2620;
  background: linear-gradient(var(--red), var(--red)) 0 22px / 100% 2px no-repeat, repeating-linear-gradient(transparent 0 23px, #b9cde6 23px 24px) 0 22px, var(--card);
}
.card b { position: absolute; top: 2px; left: 18px; font-weight: 400; color: var(--red); }
.c1 { left: 0; top: 0; --r: -4deg; }
.c2 { left: 150px; top: 112px; --r: 3deg; z-index: 2; }
.c3 { left: 330px; top: 14px; --r: -1deg; }

/* policy pages: the document is a sheet of paper on the table */
.paper { position: relative; max-width: 760px; margin: 40px auto 56px; padding: 48px 56px 40px; background: var(--grain), var(--paper); color: var(--ink); box-shadow: 0 16px 30px rgba(0, 0, 0, .4); }
.doc h1 { font-weight: 400; font-size: 2.25rem; line-height: 1.2; text-wrap: balance; }
.doc .meta { font: .875rem/1.6 var(--type); color: #4a443a; margin: 6px 0 28px; }
.doc h2 { font-weight: 500; font-size: 1.3rem; line-height: 1.3; margin: 2rem 0 .5rem; }
.doc p, .doc ul, .doc table { margin-bottom: 1rem; }
.doc ul { padding-left: 1.25rem; }
.doc li + li { margin-top: .4rem; }
.doc table { width: 100%; border-collapse: collapse; font-size: 1rem; line-height: 1.45; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: .5rem .75rem .5rem 0; border-bottom: 1px solid #cfc6b4; }
.doc th { font-weight: 500; border-bottom-color: var(--ink); }

/* one-sign pages (Pawnzzle in development, Notes coming soon) */
.solo { min-height: calc(100vh - 140px); display: grid; place-items: center; padding: 48px 16px 64px; }
.sign { --r: -2deg; width: min(100%, 440px); padding: 44px 36px 36px; background: var(--grain), var(--paper); color: var(--ink); text-align: center; }
.sign::before { content: ""; position: absolute; top: -14px; left: 50%; width: 120px; height: 28px; transform: translateX(-50%) rotate(-3deg); background: rgba(250, 238, 200, .75); box-shadow: 0 1px 3px rgba(0, 0, 0, .25); }
.sign img { width: 96px; height: 96px; border-radius: 22px; }
.sign .tw { color: var(--red); letter-spacing: .2em; text-transform: uppercase; margin-top: 16px; }
:lang(ko) .sign .tw { letter-spacing: .08em; }
.sign h1 { font-weight: 400; font-size: 2.6rem; line-height: 1.1; margin: 6px 0 10px; }
.sign .hand { display: inline-block; margin: 14px 0 18px; transform: rotate(-3deg); font: 700 1.9rem var(--hand); color: var(--pen); }
.sign small { display: block; font-size: 1rem; color: #4a443a; }

/* 404: an empty square */
.tile { position: relative; width: 112px; height: 112px; margin: 0 auto 6px; border: 8px solid var(--frame); background: repeating-conic-gradient(var(--wood-dark) 0 25%, var(--wood-light) 0 50%) 0 0 / 64px 64px; }
.tile::after { content: ""; position: absolute; left: 32px; top: 32px; width: 32px; height: 32px; outline: 2px dashed var(--red); outline-offset: -5px; }

.legal { text-align: center; font-size: .875rem; opacity: .75; padding: 0 16px 32px; }

@media (max-width: 900px) {
  .top { padding: 20px 16px 0; }
  .paper { margin: 24px 12px 40px; padding: 28px 20px; }
  .desk { display: flex; flex-direction: column; align-items: center; gap: 40px; padding: 28px 16px 56px; }
  .letter { --r: -1deg; margin: 0; padding: 28px 24px; width: 100%; max-width: 460px; }
  .problem { width: min(100%, 340px); transform: rotate(1deg); margin: 0; display: flex; flex-direction: column; align-items: center; }
  .tag { position: relative; right: auto; bottom: auto; margin-top: 12px; --r: -3deg; }
  .pad { --r: 1.5deg; width: min(100%, 300px); min-height: 0; }
  .polaroid { --r: -3deg; }
  .stamp { --r: 4deg; }
  .cards { width: min(100%, 320px); height: auto; }
  .card { position: relative; left: auto; top: auto; width: 100%; height: auto; min-height: 120px; }
  .card + .card { margin-top: -16px; }
  .biz { --r: -1.5deg; width: min(100%, 300px); }
}

@media (prefers-reduced-motion: reduce) {
  .item { transition: none; }
  .item:hover { transform: rotate(var(--r, 0deg)); }
}