:root {
  --paper: #f7f1e3;
  --paper-2: #efe6d2;
  --card: #fffaf0;
  --ink: #3a2a26;
  --ink-soft: #6f5d55;
  --line: #dccfb6;
  --moss: #5b7f4a;
  --moss-strong: #45683a;
  --moss-soft: #dfe9d3;
  --shell: #c47a3a;
  --shell-soft: #f5e1cc;
  --berry: #b5475b;
  --sky: #4f7fbf;
  --gold: #e8b83a;
  --focus: #2f6fd1;
  --radius: 14px;
  --shadow: 0 1px 0 rgba(58, 42, 38, .06), 0 6px 18px -8px rgba(58, 42, 38, .25);
  --font-display: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --font-body: 'Nunito', 'Segoe UI', system-ui, -apple-system, sans-serif;
  /* Type scale. 1rem = 18px (set on html). Nothing below --fs-xs except puzzle cells. */
  --fs-xs: .778rem;   /* 14px */
  --fs-sm: .889rem;   /* 16px */
  --fs-base: 1rem;    /* 18px */
  --fs-lg: 1.167rem;  /* 21px */
  --fs-xl: 1.444rem;  /* 26px */
  --fs-2xl: 1.778rem; /* 32px */
  --fs-display: clamp(var(--fs-2xl), 7vw, 3rem);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #1f1b17; --paper-2: #29231e; --card: #2c2621; --ink: #f1e8da; --ink-soft: #bfae9c; --line: #463c33;
    --moss: #8fbf78; --moss-strong: #a8d48f; --moss-soft: #2f3a28; --shell: #e09a5b; --shell-soft: #45301f;
    --berry: #e07a8d; --sky: #82a9e0; --gold: #f0c95c; --focus: #8ab4ff;
    --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 8px 20px -10px rgba(0, 0, 0, .7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #1f1b17; --paper-2: #29231e; --card: #2c2621; --ink: #f1e8da; --ink-soft: #bfae9c; --line: #463c33;
  --moss: #8fbf78; --moss-strong: #a8d48f; --moss-soft: #2f3a28; --shell: #e09a5b; --shell-soft: #45301f;
  --berry: #e07a8d; --sky: #82a9e0; --gold: #f0c95c; --focus: #8ab4ff;
  --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 8px 20px -10px rgba(0, 0, 0, .7);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
html { font-size: 112.5%; } /* 18px, respects the browser's font-size setting */
body {
  background: var(--paper);
  color: var(--ink);
  font: 500 var(--fs-base)/1.5 var(--font-body);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
h1, h2, h3 { font-family: var(--font-display); font-weight: 900; line-height: 1.15; margin: 0 0 .4em; letter-spacing: -0.01em; }
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
a { color: var(--moss-strong); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
.muted { color: var(--ink-soft); }
.small { font-size: var(--fs-sm); }

button, .btn {
  font: 700 var(--fs-base)/1.1 var(--font-body);
  border: 1.5px solid var(--ink);
  background: var(--card);
  color: var(--ink);
  padding: .65em 1em;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 2px 0 var(--ink);
  transition: transform .06s ease, box-shadow .06s ease, background .15s;
  min-height: 40px;
  display: inline-flex; align-items: center; justify-content: center; gap: .4em;
  text-decoration: none;
}
button:hover, .btn:hover { background: var(--paper-2); }
button:active, .btn:active { transform: translateY(2px); box-shadow: 0 0 0 var(--ink); }
button.primary, .btn.primary { background: var(--moss); color: #fff; border-color: var(--moss-strong); box-shadow: 0 2px 0 var(--moss-strong); }
:root[data-theme="dark"] button.primary, :root[data-theme="dark"] .btn.primary { color: #16210f; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) button.primary { color: #16210f; } }
button.primary:hover { filter: brightness(1.05); }
button.ghost { border-color: transparent; box-shadow: none; background: transparent; }
button.ghost:hover { background: var(--paper-2); }
button.danger { color: var(--berry); border-color: var(--berry); box-shadow: 0 2px 0 var(--berry); }
button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
button:disabled { opacity: .5; cursor: not-allowed; }

input, select, textarea {
  font: 600 var(--fs-base)/1.3 var(--font-body);
  color: var(--ink);
  background: var(--card);
  border: 1.5px solid var(--line);
  border-radius: 10px;
  padding: .5em .65em;
  min-height: 38px;
  width: 100%;
}
input:focus, select:focus, textarea:focus { border-color: var(--moss); outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--moss) 25%, transparent); }
textarea { min-height: 70px; resize: vertical; }
input[type="color"] { width: 32px; height: 32px; min-height: 0; padding: 2px; border-radius: 8px; cursor: pointer; flex: none; }
label { font-weight: 700; font-size: var(--fs-sm); }