/* Bluff Club — bluffclub.app
   The phone as a felt game table: felt ground, paper cards, gold buttons. */

@font-face {
  font-family: "Fredoka";
  src: url("fonts/fredoka-var.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "Nunito";
  src: url("fonts/nunito-var.woff2") format("woff2");
  font-weight: 200 1000;
  font-display: swap;
}
@font-face {
  font-family: "Nunito";
  src: url("fonts/nunito-var-italic.woff2") format("woff2");
  font-weight: 200 1000;
  font-style: italic;
  font-display: swap;
}

:root {
  --felt: #168b65;
  --felt-ground: #137756; /* felt under the page's own shade: what text on the table actually sits on */
  --felt-deep: #0f6b4d;
  --jade: #3cbaa6;
  --seafoam: #c5ede0;
  --seafoam-shade: #b0decf;
  --paper: #fff3d6;
  --paper-shade: #f2e3c4;
  --paper-deep: #e6d3ad;
  --tomato: #ef6753;
  --tomato-deep: #d94d3a;
  --blue: #557ac7;
  --blue-shade: #4161a7;
  --ink: #173f3a;
  --ink-soft: rgba(23, 63, 58, 0.72);
  --gold: #f6c52d;
  --gold-shade: #dfa917;
  --gold-deep: #b8880c;
  --kraft: #d4ad73;

  --display: "Fredoka", "SF Pro Rounded", "Arial Rounded MT Bold", system-ui, sans-serif;
  --body: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --radius-card: 22px;
  --radius-button: 22px;
  --shadow-paper: 0 10px 22px -6px rgba(12, 40, 34, 0.55), 0 2px 4px rgba(12, 40, 34, 0.25);
  --shadow-paper-lift: 0 18px 34px -10px rgba(12, 40, 34, 0.6), 0 3px 6px rgba(12, 40, 34, 0.28);
  --shadow-prop: 0 14px 22px -8px rgba(12, 40, 34, 0.7);

  --gutter: clamp(16px, 4vw, 40px);
  --measure: 62ch;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 640ms;

  color-scheme: light;
  scrollbar-color: var(--gold) var(--ink);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--paper);
  background-color: var(--felt-ground);
  background-image:
    linear-gradient(rgba(6, 46, 34, 0.26), rgba(6, 46, 34, 0.26)),
    url("img/felt.webp");
  background-size: auto, 512px 512px;
  background-attachment: scroll;
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-weight: 500;
  overflow-x: clip;
  caret-color: var(--tomato);
}

::selection { background: var(--gold); color: var(--ink); }

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
  border-radius: 8px;
}

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb {
  background: var(--gold);
  border-radius: 999px;
  border: 3px solid var(--ink);
}

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

a { color: inherit; text-decoration-thickness: 2px; text-underline-offset: 0.18em; }

h1, h2, h3, .display {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.012em;
  text-wrap: balance;
  margin: 0;
}

p { margin: 0; text-wrap: pretty; }

.wrap {
  width: min(100% - 2 * var(--gutter), 1180px);
  margin-inline: auto;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* ---------- Site chrome ---------- */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: clamp(18px, 3vw, 28px);
}

.top .wordmark img {
  width: clamp(120px, 14vw, 168px);
  filter: drop-shadow(0 3px 0 rgba(12, 40, 34, 0.35));
}

.top-link {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
  background: var(--seafoam);
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 0 3px 0 var(--seafoam-shade), 0 6px 12px -4px rgba(12, 40, 34, 0.5);
  transition: transform 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
}
.top-link:hover { transform: translateY(-1px); }
.top-link:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--seafoam-shade), 0 2px 6px -2px rgba(12, 40, 34, 0.5); }

/* ---------- Paper ---------- */

.paper {
  position: relative;
  color: var(--ink);
  background: var(--paper);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-paper);
}
.paper::after {
  /* the paper's dipped edge */
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: inset 0 -3px 0 var(--paper-shade), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.2rem;
  line-height: 1;
  color: var(--ink);
  text-decoration: none;
  border-radius: var(--radius-button);
  padding: 18px 26px;
  min-height: 60px;
  border: 0;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), box-shadow 160ms var(--ease-out), filter 160ms var(--ease-out);
}
.btn svg { width: 24px; height: 24px; flex: none; fill: currentColor; }

.btn-gold {
  background: linear-gradient(180deg, #fad650 0%, var(--gold) 45%, #eab820 100%);
  box-shadow:
    inset 0 1.5px 0 rgba(255, 255, 255, 0.45),
    0 5px 0 var(--gold-deep),
    0 10px 18px -6px rgba(12, 40, 34, 0.6);
}
.btn-gold:hover { filter: brightness(1.04); transform: translateY(-1px); }
.btn-gold:active {
  transform: translateY(4px);
  box-shadow:
    inset 0 1.5px 0 rgba(255, 255, 255, 0.45),
    0 1px 0 var(--gold-deep),
    0 3px 6px -2px rgba(12, 40, 34, 0.6);
}

.btn-mint {
  background: var(--seafoam);
  box-shadow: 0 4px 0 var(--seafoam-shade), 0 8px 14px -6px rgba(12, 40, 34, 0.55);
}
.btn-mint:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--seafoam-shade); }

/* ---------- Footer ---------- */

.site-foot {
  padding-block: 40px 56px;
  font-size: 0.95rem;
  color: var(--paper);
}
.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
  justify-content: space-between;
}
.site-foot nav { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.site-foot nav a { font-weight: 700; }
.site-foot .legal {
  width: 100%;
  font-size: 0.85rem;
  color: var(--paper);
  margin-top: 6px;
}

/* ---------- Reveal (layered: shadow, paper, ink) ---------- */

.js .reveal {
  --tilt: 0deg;
  opacity: 0;
  transform: translateY(26px) rotate(calc(var(--tilt) + 1.2deg));
  transition:
    opacity var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
}
.js .reveal > * {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 520ms var(--ease-out) 160ms, transform 520ms var(--ease-out) 160ms;
}
.js .reveal.is-in { opacity: 1; transform: translateY(0) rotate(var(--tilt)); }
.js .reveal.is-in > * { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .js .reveal > * { opacity: 1; transform: rotate(var(--tilt)); transition: none; }
  .btn, .top-link { transition: none; }
}