/* ==========================================================================
   SMUI — shared design system for nethack.statico.io
   Nord palette · JetBrains Mono · zero radius · terminal aesthetic
   Modeled on https://smui.statico.io/
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;600;700&display=swap');

:root {
  /* Nord — Frost */
  --frost-1: 176 25% 65%;   /* #8FBCBB */
  --frost-2: 193 44% 67%;   /* #88C0D0 */
  --frost-3: 210 34% 63%;   /* #81A1C1 */
  --frost-4: 213 32% 52%;   /* #5E81AC */

  /* Nord — Aurora (status) */
  --red:    355 52% 64%;    /* #BF616A */
  --orange:  14 51% 63%;    /* #D08770 */
  --yellow:  40 71% 73%;    /* #EBCB8B */
  --green:   92 28% 65%;    /* #A3BE8C */
  --purple: 311 24% 63%;    /* #B48EAD */

  --accent: var(--frost-2);

  /* Light mode — Snow Storm */
  --surface-0: 218 27% 94%;
  --surface-1: 218 27% 92%;
  --surface-2: 219 24% 88%;
  --surface-3: 219 20% 82%;
  --text-0:    220 16% 22%;
  --text-1:    220 16% 36%;
  --text-2:    220 12% 50%;
  --line:      219 20% 80%;

  --radius: 0rem;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', SFMono-Regular, Menlo,
          Consolas, 'DejaVu Sans Mono', monospace;

  --step: 0.25rem;
  --maxw: 1180px;

  /* so native controls — selects, number spinners, scrollbars — follow the
     theme instead of staying light. Overridden per-theme below. */
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    /* Dark mode — Polar Night */
    --surface-0: 213 16% 12%;
    --surface-1: 220 16% 16%;
    --surface-2: 222 16% 19%;
    --surface-3: 215 14% 22%;
    --text-0:    218 27% 92%;
    --text-1:    219 22% 76%;
    --text-2:    220 12% 58%;
    --line:      215 14% 26%;
  }
}

/* Explicit override wins in both directions */
:root[data-theme='dark'] {
  color-scheme: dark;
  --surface-0: 213 16% 12%;
  --surface-1: 220 16% 16%;
  --surface-2: 222 16% 19%;
  --surface-3: 215 14% 22%;
  --text-0:    218 27% 92%;
  --text-1:    219 22% 76%;
  --text-2:    220 12% 58%;
  --line:      215 14% 26%;
}
:root[data-theme='light'] {
  color-scheme: light;
  --surface-0: 218 27% 94%;
  --surface-1: 218 27% 92%;
  --surface-2: 219 24% 88%;
  --surface-3: 219 20% 82%;
  --text-0:    220 16% 22%;
  --text-1:    220 16% 36%;
  --text-2:    220 12% 50%;
  --line:      219 20% 80%;
}

/* -------------------------------------------------------------------------- */

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: hsl(var(--surface-0));
  color: hsl(var(--text-0));
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

a { color: hsl(var(--frost-2)); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* Wiki links get a subtle marker so they read as external reference */
a.wiki {
  color: hsl(var(--frost-3));
  text-decoration: underline;
  text-decoration-color: hsl(var(--frost-3) / 0.35);
  text-underline-offset: 3px;
}
a.wiki:hover { color: hsl(var(--frost-2)); text-decoration-color: currentColor; }

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.25; }
h1 { font-size: 22px; letter-spacing: -0.2px; }
h2 { font-size: 16px; }
h3 { font-size: 13px; }

p { margin: 0 0 calc(var(--step) * 3); }

code, kbd, pre { font-family: var(--mono); }

/* Layout ------------------------------------------------------------------ */

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 calc(var(--step) * 6); }
.stack > * + * { margin-top: calc(var(--step) * 4); }
/* padding-block, not shorthand: .page and .wrap sit on the same element, and a
   `padding: N 0` shorthand here would win on source order and wipe out .wrap's
   horizontal gutter, leaving content flush to the viewport edge below --maxw. */
.page { padding-block: calc(var(--step) * 8) calc(var(--step) * 20); }

.grid { display: grid; gap: calc(var(--step) * 4); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }

.row { display: flex; gap: calc(var(--step) * 3); flex-wrap: wrap; align-items: center; }
.spread { display: flex; justify-content: space-between; align-items: baseline; gap: calc(var(--step) * 3); }

/* Type utilities ---------------------------------------------------------- */

.label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: hsl(var(--text-2));
}
.dim  { color: hsl(var(--text-2)); }
.mid  { color: hsl(var(--text-1)); }
.hero { font-size: 42px; font-weight: 700; letter-spacing: -1px; line-height: 1.05; }
.stat { font-size: 26px; font-weight: 600; }
.small { font-size: 12px; }
.nowrap { white-space: nowrap; }

/* Nav --------------------------------------------------------------------- */

.nav {
  border-bottom: 1px solid hsl(var(--line));
  background: hsl(var(--surface-1));
  position: sticky; top: 0; z-index: 50;
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 calc(var(--step) * 6);
  display: flex; align-items: center; gap: calc(var(--step) * 6);
  min-height: 46px; flex-wrap: wrap;
}
.nav-brand {
  font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  font-size: 12px; color: hsl(var(--text-0));
}
.nav-brand:hover { text-decoration: none; color: hsl(var(--frost-2)); }
.nav-brand .tick { color: hsl(var(--frost-2)); }
.nav-links { display: flex; gap: calc(var(--step) * 5); flex-wrap: wrap; }
.nav-links a {
  font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px;
  color: hsl(var(--text-2)); padding: calc(var(--step) * 3) 0;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.nav-links a:hover { color: hsl(var(--text-0)); text-decoration: none; }
.nav-links a[aria-current='page'] {
  color: hsl(var(--frost-2)); border-bottom-color: hsl(var(--frost-2));
}
.nav-spacer { margin-left: auto; }

/* Theme switcher — sits in the nav and reads like the links next to it */
.theme-btn {
  font-family: var(--mono); font-size: 12px;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: hsl(var(--text-2));
  background: none; border: 0; padding: calc(var(--step) * 3) 0;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: calc(var(--step) * 2);
}
.theme-btn:hover { color: hsl(var(--text-0)); }
.theme-btn:focus-visible { outline: 2px solid hsl(var(--frost-2)); outline-offset: 2px; }
.theme-glyph { color: hsl(var(--frost-2)); font-size: 12px; line-height: 1; }

/* Narrow screens: the nav wraps to several lines, and the spacer's auto margin
   would strand the trailing link alone on the last one. Let everything flow. */
/* 840px is where six tool links plus the brand stop fitting on one row. */
@media (max-width: 840px) {
  /* A wrapped nav is too tall to keep pinned — it would eat a sixth of a phone
     screen for the whole scroll. Let it scroll away instead. */
  .nav { position: static; }
  .nav-inner { gap: calc(var(--step) * 4); padding-block: calc(var(--step) * 1.5); }
  .nav-spacer { display: none; }
  /* display:contents dissolves the two link groups so every anchor becomes a
     direct flex child and they all wrap as one run, instead of each group
     claiming its own line. */
  .nav-links { display: contents; }
  .nav-links a, .theme-btn { padding-block: calc(var(--step) * 1.5); }
}

/* Card -------------------------------------------------------------------- */

.card {
  background: hsl(var(--surface-1));
  border: 1px solid hsl(var(--line));
  border-radius: var(--radius);
}
.card-glow { transition: border-color 0.15s ease, background 0.15s ease; }
.card-glow:hover { border-color: hsl(var(--frost-2) / 0.6); }

.card-hd {
  padding: calc(var(--step) * 2.5) calc(var(--step) * 3.5);
  border-bottom: 1px solid hsl(var(--line));
  display: flex; align-items: center; justify-content: space-between;
  gap: calc(var(--step) * 3);
  /* wrap so a header holding a title plus a control stacks on narrow screens
     instead of pushing past the viewport edge */
  flex-wrap: wrap;
  background: hsl(var(--surface-2));
}
.card-bd { padding: calc(var(--step) * 3.5); }

/* Form -------------------------------------------------------------------- */

.field { display: flex; flex-direction: column; gap: calc(var(--step) * 1.5); }

input[type='text'], input[type='number'], select, textarea {
  font-family: var(--mono); font-size: 13px;
  background: hsl(var(--surface-0));
  color: hsl(var(--text-0));
  border: 1px solid hsl(var(--line));
  border-radius: var(--radius);
  padding: calc(var(--step) * 2) calc(var(--step) * 2.5);
  width: 100%;
}
input:focus-visible, select:focus-visible, textarea:focus-visible,
button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid hsl(var(--frost-2));
  outline-offset: 1px;
}
textarea { resize: vertical; min-height: 90px; line-height: 1.6; }
input.big { font-size: 20px; font-weight: 600; color: hsl(var(--frost-2)); }

/* Native checkbox, Nord-tinted — keeps a11y semantics intact */
input[type='checkbox'] {
  appearance: none; -webkit-appearance: none;
  width: 14px; height: 14px; flex: 0 0 14px;
  border: 1px solid hsl(var(--text-2));
  background: hsl(var(--surface-0));
  border-radius: 0; cursor: pointer; position: relative;
  margin: 0; transition: background 0.12s ease, border-color 0.12s ease;
}
input[type='checkbox']:checked {
  background: hsl(var(--frost-2)); border-color: hsl(var(--frost-2));
}
input[type='checkbox']:checked::after {
  content: ''; position: absolute; left: 4px; top: 1px;
  width: 4px; height: 8px;
  border: solid hsl(var(--surface-0));
  border-width: 0 2px 2px 0; transform: rotate(45deg);
}

/* Button ------------------------------------------------------------------ */

.btn {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 1.5px;
  background: hsl(var(--surface-2));
  color: hsl(var(--text-1));
  border: 1px solid hsl(var(--line));
  border-radius: var(--radius);
  padding: calc(var(--step) * 2) calc(var(--step) * 3.5);
  cursor: pointer;
  transition: color 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}
.btn:hover { color: hsl(var(--text-0)); border-color: hsl(var(--frost-2) / 0.6); }
.btn[aria-pressed='true'], .btn.on {
  background: hsl(var(--frost-2) / 0.14);
  color: hsl(var(--frost-2));
  border-color: hsl(var(--frost-2));
}
.btn-danger:hover { color: hsl(var(--red)); border-color: hsl(var(--red) / 0.6); }

/* Segmented control */
.seg { display: inline-flex; border: 1px solid hsl(var(--line)); }
.seg .btn { border: 0; border-right: 1px solid hsl(var(--line)); }
.seg .btn:last-child { border-right: 0; }

/* Badge ------------------------------------------------------------------- */

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 1.2px;
  padding: 1px calc(var(--step) * 1.75);
  border: 1px solid currentColor; border-radius: var(--radius);
  white-space: nowrap;
}
.b-frost  { color: hsl(var(--frost-2)); }
.b-green  { color: hsl(var(--green)); }
.b-yellow { color: hsl(var(--yellow)); }
.b-orange { color: hsl(var(--orange)); }
.b-red    { color: hsl(var(--red)); }
.b-purple { color: hsl(var(--purple)); }
.b-dim    { color: hsl(var(--text-2)); }

/* Note / callout ---------------------------------------------------------- */

.note {
  border-left: 2px solid hsl(var(--frost-3));
  background: hsl(var(--surface-2));
  padding: calc(var(--step) * 2.5) calc(var(--step) * 3.5);
  color: hsl(var(--text-1)); font-size: 12px;
}
.note-warn { border-left-color: hsl(var(--yellow)); }
.note-red  { border-left-color: hsl(var(--red)); }

/* Table ------------------------------------------------------------------- */

.tbl-scroll { overflow-x: auto; }
table.tbl { border-collapse: collapse; width: 100%; font-size: 12px; }
table.tbl th {
  text-align: left; font-size: 12px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 1.2px;
  color: hsl(var(--text-2));
  padding: calc(var(--step) * 2) calc(var(--step) * 3);
  border-bottom: 1px solid hsl(var(--line)); white-space: nowrap;
}
table.tbl td {
  padding: calc(var(--step) * 2) calc(var(--step) * 3);
  border-bottom: 1px solid hsl(var(--line) / 0.5);
  vertical-align: top;
}
table.tbl tr:last-child td { border-bottom: 0; }

/* Meter — used for probability bars */
.meter { height: 3px; background: hsl(var(--surface-3)); width: 100%; min-width: 40px; }
.meter > span { display: block; height: 100%; background: hsl(var(--frost-2)); }

/* TTY map ----------------------------------------------------------------- */

.tty {
  font-family: var(--mono);
  line-height: 1.0;
  letter-spacing: 0;
  white-space: pre;
  background: hsl(var(--surface-0));
  border: 1px solid hsl(var(--line));
  padding: calc(var(--step) * 3);
  overflow-x: auto;
  font-size: 13px;
}
.tty-sm { font-size: 12px; padding: calc(var(--step) * 2); }
/* NetHack glyph colors */
.g-wall    { color: hsl(var(--text-2)); }
.g-floor   { color: hsl(var(--surface-3)); }
.g-boulder { color: hsl(var(--yellow)); }
.g-hole    { color: hsl(var(--orange)); }
.g-stair   { color: hsl(var(--text-0)); }
.g-door    { color: hsl(var(--orange)); }
.g-prize   { color: hsl(var(--purple)); }
.g-item    { color: hsl(var(--frost-2)); }
.g-mon     { color: hsl(var(--red)); }
.g-hero    { color: hsl(var(--green)); }

/* Misc -------------------------------------------------------------------- */

hr { border: 0; border-top: 1px solid hsl(var(--line)); margin: calc(var(--step) * 5) 0; }

details > summary {
  cursor: pointer; list-style: none;
  font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px;
  color: hsl(var(--text-2)); padding: calc(var(--step) * 1.5) 0;
}
details > summary::-webkit-details-marker { display: none; }
details > summary::before { content: '▸ '; color: hsl(var(--frost-2)); }
details[open] > summary::before { content: '▾ '; }
details > summary:hover { color: hsl(var(--text-0)); }

.empty {
  padding: calc(var(--step) * 10) calc(var(--step) * 4);
  text-align: center; color: hsl(var(--text-2)); font-size: 12px;
}

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

.footer {
  border-top: 1px solid hsl(var(--line));
  margin-top: calc(var(--step) * 16);
  /* padding-block for the same reason as .page — see the note there. */
  padding-block: calc(var(--step) * 6) calc(var(--step) * 10);
  color: hsl(var(--text-2)); font-size: 12px;
}
.footer a { color: hsl(var(--text-1)); }
.footer a:hover { color: hsl(var(--frost-2)); }

/* Credits block — every tool page names its own sources */
.credits { display: grid; gap: calc(var(--step) * 3); }
.credits dl {
  margin: 0; display: grid; gap: calc(var(--step) * 2);
  grid-template-columns: max-content 1fr;
}
.credits dt {
  font-size: 12px; text-transform: uppercase; letter-spacing: 1.2px;
  color: hsl(var(--text-2)); white-space: nowrap;
  padding-top: 1px;
}
.credits dd { margin: 0; color: hsl(var(--text-1)); font-size: 12px; line-height: 1.65; }
@media (max-width: 560px) {
  .credits dl { grid-template-columns: 1fr; gap: calc(var(--step) * 1); }
  .credits dd { margin-bottom: calc(var(--step) * 2); }
}
.meta-bar {
  display: flex; flex-wrap: wrap; gap: calc(var(--step) * 2) calc(var(--step) * 4);
  align-items: center; justify-content: space-between;
  padding-top: calc(var(--step) * 4); margin-top: calc(var(--step) * 4);
  border-top: 1px solid hsl(var(--line));
}
.meta-bar .links { display: flex; flex-wrap: wrap; gap: calc(var(--step) * 4); }

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}