/* Same look as okak0.com: dark dot-grid page, charcoal cards, white pill buttons.
   Always dark until the visitor flips the toggle; the choice is a cookie the server turns into
   data-theme on <html>, so it works with JavaScript blocked. */
:root {
  --bg: #121212;
  --dot: rgba(255, 255, 255, 0.075);
  --card: #1d1d1d;
  --card-line: rgba(255, 255, 255, 0.07);
  --panel: #161616;
  --panel-line: rgba(255, 255, 255, 0.05);
  --chip: #232323;
  --text: #ececec;
  --dim: #9a9a9a;
  --faint: #6a6a6a;
  --yellow: #f2d633;
  --green: #3fd77f;
  --red: #ff5b54;
  --blue: #4c9dff;
  --font: "Outfit", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --btn: #f5f5f5;
  --btn-hover: #ffffff;
  --btn-ink: #121212;
  --hover: #2a2a2a;
  --shadow: rgba(0, 0, 0, 0.4);
  --card-hover-line: rgba(255, 255, 255, 0.12);
  --dot-main: #f0f0f0;
  --dot-ring: rgba(255, 255, 255, 0.06);
  --dot-off: #5c5c5c;
  --dashed: rgba(255, 255, 255, 0.14);
  --toggle: #5a5a5a;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f3f3f1;
    --toggle: #2b2b2b;
    --dot: rgba(0, 0, 0, 0.11);
    --card: #ffffff;
    --card-line: rgba(0, 0, 0, 0.08);
    --panel: #f6f6f4;
    --panel-line: rgba(0, 0, 0, 0.05);
    --chip: #e9e9e6;
    --text: #161616;
    --dim: #5d5d5d;
    --faint: #8a8a8a;
    --btn: #161616;
    --btn-hover: #000000;
    --btn-ink: #f5f5f5;
    --hover: #e2e2de;
    --shadow: rgba(0, 0, 0, 0.08);
    --card-hover-line: rgba(0, 0, 0, 0.16);
    --dot-main: #161616;
    --dot-ring: rgba(0, 0, 0, 0.06);
    --dot-off: #b5b5b5;
    --dashed: rgba(0, 0, 0, 0.18);
    --yellow: #d9b600;
    --green: #1fa85a;
    --red: #e0443d;
    --blue: #2f7fe0;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f3f3f1;
  --toggle: #2b2b2b;
  --dot: rgba(0, 0, 0, 0.11);
  --card: #ffffff;
  --card-line: rgba(0, 0, 0, 0.08);
  --panel: #f6f6f4;
  --panel-line: rgba(0, 0, 0, 0.05);
  --chip: #e9e9e6;
  --text: #161616;
  --dim: #5d5d5d;
  --faint: #8a8a8a;
  --btn: #161616;
  --btn-hover: #000000;
  --btn-ink: #f5f5f5;
  --hover: #e2e2de;
  --shadow: rgba(0, 0, 0, 0.08);
  --card-hover-line: rgba(0, 0, 0, 0.16);
  --dot-main: #161616;
  --dot-ring: rgba(0, 0, 0, 0.06);
  --dot-off: #b5b5b5;
  --dashed: rgba(0, 0, 0, 0.18);
  --yellow: #d9b600;
  --green: #1fa85a;
  --red: #e0443d;
  --blue: #2f7fe0;
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background-color: var(--bg);
  background-image: radial-gradient(circle, var(--dot) 1px, transparent 1.4px);
  background-size: 22px 22px;
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }
main.wrap { max-width: 880px; }

/* ---------- header ---------- */

.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}
.logo { display: flex; align-items: center; gap: 12px; font-weight: 400; font-size: 17px; }
.logo svg { width: 30px; height: 30px; }
.top nav { display: flex; align-items: center; gap: 8px; }
.tab {
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 400;
  color: var(--dim);
  transition: color .15s, background .15s;
}
.tab:hover { color: var(--text); background: var(--chip); }

/* ---------- dots ---------- */

.dot { display: inline-block; width: 9px; height: 1.5px; border-radius: 1px; background: currentColor; flex: none; }
.dot.status.green { background: var(--green); }
.dot.status.yellow { background: var(--yellow); }
.dot.status.red { background: var(--red); }
.dot.status.blue { background: var(--blue); }
.dot.status.gray { background: var(--dot-off); }
.eyebrow .dot.green, .dot.status { width: 8px; height: 8px; border-radius: 50%; }
.eyebrow .dot.green { background: var(--green); box-shadow: 0 0 0 3px color-mix(in srgb, var(--green) 22%, transparent); }

/* ---------- hero ---------- */

.hero { padding: 56px 0 32px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 12px;
  border-radius: 999px;
  background: var(--chip);
  border: 1px solid var(--card-line);
  font-size: 13px;
  color: var(--dim);
}
.hero h1 {
  font-size: clamp(38px, 6vw, 60px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 22px 0 16px;
}
.hero .lead { color: var(--dim); font-size: 18px; margin: 0; max-width: 560px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 22px 0 0; padding: 0; }
.chips li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 12px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--card-line);
  font-size: 13.5px;
  color: var(--dim);
}

/* ---------- cards & panels ---------- */

.card {
  background: var(--card);
  border: 1px solid var(--card-line);
  border-radius: 18px;
  padding: 10px;
  box-shadow: 0 18px 40px var(--shadow);
}
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 12px;
}
.card > .panel + .panel,
.card > * + .panel { margin-top: 10px; }

/* ---------- buttons (pills) ---------- */

.btn {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  border: 1px solid var(--card-line);
  background: var(--chip);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  transition: transform .12s, background .15s, color .15s;
}
.btn:hover { background: var(--hover); }
.btn.solid {
  background: var(--btn);
  color: var(--btn-ink);
  border-color: transparent;
  box-shadow: 0 6px 20px var(--shadow);
}
.btn.solid:hover { background: var(--btn-hover); transform: translateY(-1px); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--dim); padding: 8px 10px; }
.btn.ghost:hover { background: var(--chip); color: var(--text); }
.btn.ghost.danger:hover { color: var(--red); }
.btn.copied { background: var(--green); border-color: var(--green); color: #fff; }
.btn:focus-visible, .drop input:focus-visible + * { outline: 2px solid var(--blue); outline-offset: 2px; }
.btn svg { width: 16px; height: 16px; flex: none; }

/* ---------- footer ---------- */

.foot { margin-top: 96px; border-top: 1px solid var(--card-line); }
.foot .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 22px;
  padding-bottom: 36px;
  color: var(--faint);
  font-size: 13.5px;
}
.foot a:hover { color: var(--text); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 20px);
  background: var(--btn);
  color: var(--btn-ink);
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 12px;
  box-shadow: 0 10px 30px var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s, transform .15s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- theme toggle ---------- */

.theme-toggle {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--chip);
  border: 1px solid var(--card-line);
  color: var(--text);
  cursor: pointer;
  padding: 0;
  transition: background .15s;
}
.theme-toggle:hover { background: var(--hover); }
.theme-toggle:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .sun { display: none; }
:root[data-theme="light"] .theme-toggle .sun { display: block; }
:root[data-theme="light"] .theme-toggle .moon { display: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme-toggle .sun { display: block; }
  :root:not([data-theme="dark"]) .theme-toggle .moon { display: none; }
}

/* ---------- small screens ---------- */

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .top .wrap { height: 72px; }
  .top nav .hide-sm { display: none; }
  .tab { padding: 10px 12px; }
  .hero { padding-top: 24px; }
  .hero .lead { font-size: 16px; }
}

.top, main, .foot { position: relative; z-index: 1; }
.toast { z-index: 10; }


/* ---------- games ---------- */

main.wrap { max-width: 880px; }
.tab { border: 0; background: transparent; font-family: var(--font); cursor: pointer; }
.hero { padding: 40px 0 26px; }
.hero h1 { font-size: clamp(34px, 5vw, 52px); }
[hidden] { display: none !important; }
.faint { color: var(--faint); }
.small { font-size: 13px; }
.spacer { flex: 1; }
.label { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--dim); }
.btn.big { padding: 12px 22px; font-size: 15.5px; border-radius: 12px; }
.btn.big svg { width: 18px; height: 18px; }
.spinner { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--dashed); border-top-color: var(--text); animation: spin .9s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.link { text-decoration: underline; text-underline-offset: 3px; }
.chips a { color: inherit; }
.chips li:has(a):hover { color: var(--text); }

/* home shelves */
.shelf { margin-top: 34px; }
.shelf-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.shelf-head h2 { margin: 0; font-size: 22px; font-weight: 400; }
.tag { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--dim); background: var(--card); border: 1px solid var(--card-line); border-radius: 999px; padding: 5px 12px; }
.notice { background: var(--card); border: 1px solid var(--card-line); border-left: 3px solid var(--yellow); border-radius: 12px; padding: 12px 16px; margin: 0 0 14px; color: var(--dim); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.game-card {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto 1fr auto; column-gap: 12px; row-gap: 4px;
  background: var(--card); border: 1px solid var(--card-line); border-radius: 18px; padding: 16px;
  transition: border-color .15s, transform .15s;
}
.game-card:hover { border-color: var(--card-hover-line); transform: translateY(-2px); }
.game-card:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.gc-icon { grid-row: span 3; width: 44px; height: 44px; display: grid; place-items: center; font-size: 24px; background: var(--panel); border: 1px solid var(--panel-line); border-radius: 12px; }
.gc-name { font-weight: 400; font-size: 16.5px; }
.gc-blurb { color: var(--dim); font-size: 13.5px; line-height: 1.4; }
.gc-kind { color: var(--faint); font-size: 12px; margin-top: 4px; }

/* game pages */
.hero.small { padding: 18px 0 18px; }
.hero.small h1 { font-size: clamp(28px, 4vw, 38px); margin-top: 6px; }
.hero.small .lead { font-size: 15.5px; }
.back { display: inline-block; color: var(--dim); font-size: 14px; margin-bottom: 10px; }
.back:hover { color: var(--text); }
.intro { padding: 18px 20px 20px; }
.intro p { color: var(--dim); max-width: 640px; }
.intro b { color: var(--text); font-weight: 500; }
.starts { display: flex; flex-wrap: wrap; gap: 8px; }
.play { padding: 18px 14px; display: flex; flex-direction: column; align-items: center; gap: 14px; overflow-x: auto; }
.again { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px 12px; }
.status { display: inline-flex; align-items: center; gap: 10px; font-size: 15.5px; text-align: center; }
.status b { font-weight: 500; }
.board-form { display: contents; }
.row-btns { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.input { font: inherit; font-size: 16px; color: var(--text); background: var(--bg); border: 1px solid var(--card-line); border-radius: 10px; padding: 9px 12px; outline: none; }
.input:focus { border-color: var(--card-hover-line); }

/* generic square cell button for grid games */
.cell {
  font: inherit; color: var(--text); background: var(--chip); border: 1px solid var(--card-line); border-radius: 8px;
  display: grid; place-items: center; padding: 0; cursor: pointer; transition: background .1s;
}
button.cell:hover:not(:disabled) { background: var(--hover); }
.cell:disabled { cursor: default; }

/* JS game stage */
.stage-panel { padding: 12px; }
.stage { display: flex; flex-direction: column; align-items: center; gap: 10px; outline: none; touch-action: manipulation; user-select: none; -webkit-user-select: none; }
.gk-canvas { display: block; width: 100%; height: auto; border-radius: 10px; background: var(--bg); border: 1px solid var(--card-line); touch-action: none; }
.gk-hud { display: flex; gap: 18px; font-size: 14px; color: var(--dim); }
.gk-hud b { color: var(--text); font-weight: 500; }
.controls { color: var(--dim); font-size: 14px; }

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .game-card { grid-template-columns: 1fr; padding: 14px; }
  .gc-icon { grid-row: auto; margin-bottom: 6px; width: 40px; height: 40px; font-size: 21px; }
  .play { padding: 14px 6px; }
}