/* Shared/theme.css — the game's visual theme (SPEC §12).
 *
 * Steampunk workshop meets electric techno: midnight-teal ground with a faint
 * gear/rivet texture, brass and copper hardware, parchment text and the
 * electric-blue lane colour (#00aeff) as the neon accent.
 *
 * Sections: tokens · base · layout helpers · buttons · panels · forms · tabs ·
 * badges & gems · top nav · sound toggle · modal · toast · banner · spinner ·
 * empty state · misc (table, progress, switch, kbd) · card grid · motion.
 * Every page links this file; the living style guide is /Shared/demo/.
 */

/* ============================================================== tokens === */

:root {
  color-scheme: dark;

  /* Surfaces (deepest → raised) */
  --bg-0: #050d10;
  --bg-1: #0a171c;
  --bg-2: #0f2128;
  --bg-3: #152c34;
  --bg-4: #1c3842;
  --surface: #0f2027;
  --surface-2: #132830;
  --well: #061014;

  /* Metals */
  --brass: #c8963e;
  --brass-light: #e8c47c;
  --brass-pale: #f6dfa8;
  --brass-dark: #8a6424;
  --brass-deep: #4d3510;
  --copper: #b87333;
  --copper-light: #dc955a;
  --copper-dark: #7a4719;
  --verdigris: #5fbfa9;

  /* Text */
  --parchment: #f1e4c8;
  --text: #f1e4c8;
  --text-dim: #c9bc9f;
  --text-muted: #978d78;
  --text-on-brass: #24180a;
  --text-on-neon: #03141f;

  /* Electric accent (the lane colour) */
  --neon: #00aeff;
  --neon-light: #7fd8ff;
  --neon-dark: #0078b8;
  --neon-glow: 0 0 14px rgb(0 174 255 / 0.45);

  /* Feedback */
  --success: #3ccf8e;
  --warning: #f5b83f;
  --danger: #e5534b;
  --danger-light: #ff8a80;
  --info: var(--neon);

  /* Rarity (mirrors RARITIES in Shared/abilities.js) */
  --rarity-common: #b8c0c8;
  --rarity-rare: #3fa9f5;
  --rarity-epic: #b05cf0;
  --rarity-legendary: #f5b83f;

  /* Lines */
  --line: rgb(200 150 62 / 0.22);
  --line-strong: rgb(200 150 62 / 0.5);
  --line-neon: rgb(0 174 255 / 0.5);

  /* Type */
  --font-heading: Georgia, 'Times New Roman', Times, serif;
  --font-ui: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: Impact, 'Arial Black', 'Franklin Gothic Heavy', system-ui, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Mono', Consolas, 'Liberation Mono', 'DejaVu Sans Mono', monospace;
  --fs-xs: 12px;
  --fs-sm: 13px;
  --fs-md: 15px;
  --fs-lg: 18px;
  --fs-xl: 22px;
  --fs-2xl: 30px;
  --fs-3xl: 44px;

  /* Shape & space */
  --radius-xs: 4px;
  --radius-sm: 7px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Depth */
  --shadow-sm: 0 2px 6px rgb(0 0 0 / 0.35);
  --shadow: 0 10px 28px rgb(0 0 0 / 0.45);
  --shadow-lg: 0 24px 70px rgb(0 0 0 / 0.6);

  /* Motion — quick and punchy */
  --dur-fast: 110ms;
  --dur: 180ms;
  --dur-slow: 320ms;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-snap: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layers */
  --z-nav: 100;
  --z-popover: 600;
  --z-banner: 900;
  --z-modal: 1000;
  --z-toast: 1100;

  /* Top bar: --topnav-min-h is its design height; --topnav-h is its REAL
     height, which nav.js keeps up to date (the bar grows when its links move
     to a second row) for toasts, the page banner and sticky page elements.
     The bar itself must never size from --topnav-h (that would be a loop). */
  --topnav-min-h: 60px;
  --topnav-h: var(--topnav-min-h);
}

/* ================================================================ base === */

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

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scrollbar-color: var(--brass-dark) var(--bg-0);
}

/* ui.js locks page scrolling while a dialog is open. On a page that had a
   classic (space-taking) scrollbar it also keeps the scrollbar's gutter, so
   hiding the scrollbar doesn't widen the page and shift everything sideways. */
html.modal-open {
  overflow: hidden;
}
html.modal-open.modal-open-gutter {
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font: 400 var(--fs-md) / 1.5 var(--font-ui);
  color: var(--text);
  background-color: var(--bg-1);
  background-image:
    radial-gradient(ellipse 80% 55% at 50% -12%, rgb(0 174 255 / 0.14), transparent 70%),
    radial-gradient(ellipse 60% 50% at 105% 105%, rgb(184 115 51 / 0.13), transparent 70%),
    radial-gradient(ellipse 50% 45% at -5% 60%, rgb(200 150 62 / 0.06), transparent 70%),
    radial-gradient(circle at center, rgb(200 150 62 / 0.1) 0 1px, transparent 1.6px),
    linear-gradient(180deg, #0c1c22 0%, #081419 55%, #050d10 100%);
  background-size: auto, auto, auto, 32px 32px, auto;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

/* Two faint gears in the corners, drawn with gradients only:
   ::before = the teeth (a conic pattern masked to an annulus),
   ::after  = rim, hub and spokes. */
body::before,
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  --gear: rgb(200 150 62 / 0.075);
  --gear-a: right -190px top -170px / 580px 580px no-repeat;
  --gear-b: left -150px bottom -140px / 400px 400px no-repeat;
}
body::before {
  background:
    repeating-conic-gradient(from 3deg, var(--gear) 0 8deg, transparent 8deg 20deg) var(--gear-a),
    repeating-conic-gradient(from 0deg, var(--gear) 0 10deg, transparent 10deg 24deg) var(--gear-b);
  -webkit-mask:
    radial-gradient(closest-side, transparent 0 85%, #000 85.5% 99%, transparent 99.5%) var(--gear-a),
    radial-gradient(closest-side, transparent 0 85%, #000 85.5% 99%, transparent 99.5%) var(--gear-b);
  mask:
    radial-gradient(closest-side, transparent 0 85%, #000 85.5% 99%, transparent 99.5%) var(--gear-a),
    radial-gradient(closest-side, transparent 0 85%, #000 85.5% 99%, transparent 99.5%) var(--gear-b);
}
body::after {
  background:
    radial-gradient(closest-side, transparent 0 13%, var(--gear) 13.5% 22%, transparent 22.5% 72%, var(--gear) 72.5% 86%, transparent 86.5%) var(--gear-a),
    repeating-conic-gradient(from 10deg, var(--gear) 0 5deg, transparent 5deg 60deg) var(--gear-a),
    radial-gradient(closest-side, transparent 0 13%, var(--gear) 13.5% 22%, transparent 22.5% 72%, var(--gear) 72.5% 86%, transparent 86.5%) var(--gear-b),
    repeating-conic-gradient(from 0deg, var(--gear) 0 6deg, transparent 6deg 72deg) var(--gear-b);
  -webkit-mask:
    radial-gradient(closest-side, #000 0 86%, transparent 86.5%) var(--gear-a),
    radial-gradient(closest-side, #000 0 86%, transparent 86.5%) var(--gear-b);
  mask:
    radial-gradient(closest-side, #000 0 86%, transparent 86.5%) var(--gear-a),
    radial-gradient(closest-side, #000 0 86%, transparent 86.5%) var(--gear-b);
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-family: var(--font-heading);
  font-weight: 700;
  font-variant: small-caps;
  letter-spacing: 0.03em;
  line-height: 1.15;
  color: var(--parchment);
  text-wrap: balance;
}
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

p {
  margin: 0 0 1em;
}

a {
  color: var(--neon-light);
  text-decoration-color: rgb(127 216 255 / 0.45);
  text-underline-offset: 0.18em;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover {
  color: #b9eaff;
  text-decoration-color: currentColor;
}

::selection {
  color: var(--text-on-neon);
  background: var(--neon-light);
}

/* One focus style everywhere: a neon ring outside the element. */
:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

code,
kbd,
pre,
samp {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

code {
  padding: 0.1em 0.35em;
  border-radius: var(--radius-xs);
  color: var(--brass-pale);
  background: rgb(200 150 62 / 0.12);
}

hr,
.divider {
  height: 1px;
  margin: var(--space-5) 0;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--line-strong) 20%, rgb(0 174 255 / 0.45) 50%, var(--line-strong) 80%, transparent);
}

input[type='checkbox'],
input[type='radio'] {
  accent-color: var(--brass);
}

input[type='range'] {
  accent-color: var(--neon);
}

/* ============================================================== helpers === */

.container {
  width: min(1200px, 100%);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--gap, var(--space-3));
}

.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--gap, var(--space-3));
}

.spacer {
  flex: 1;
}

.muted {
  color: var(--text-muted);
}

.text-dim {
  color: var(--text-dim);
}

.eyebrow {
  font: 700 var(--fs-xs) / 1.2 var(--font-ui);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neon-light);
}

/* Brass gradient text. On an inline element the gradient repeats per line. */
.title-brass {
  background: linear-gradient(180deg, #fff3d0 0%, #f0cf86 30%, #c8963e 62%, #8a6424 100%);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 2px 0 rgb(0 0 0 / 0.55)) drop-shadow(0 0 18px rgb(0 174 255 / 0.25));
}

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

/* ============================================================== buttons === */

.btn {
  --btn-bg: linear-gradient(180deg, #f6d894 0%, #deaf58 16%, #c8963e 52%, #a2742b 100%);
  --btn-fg: var(--text-on-brass);
  --btn-border: #5e4113;
  --btn-edge: #3b2808;
  --btn-hi: rgb(255 246 214 / 0.7);
  --btn-glow: rgb(0 174 255 / 0);

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid var(--btn-border);
  border-radius: var(--radius);
  font: 700 14px / 1 var(--font-ui);
  letter-spacing: 0.03em;
  color: var(--btn-fg);
  text-decoration: none;
  text-shadow: 0 1px 0 rgb(255 246 214 / 0.35);
  white-space: nowrap;
  background: var(--btn-bg);
  box-shadow:
    inset 0 1px 0 var(--btn-hi),
    inset 0 -3px 0 rgb(0 0 0 / 0.18),
    0 2px 0 var(--btn-edge),
    0 5px 12px rgb(0 0 0 / 0.4),
    0 0 0 0 var(--btn-glow);
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition:
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur) var(--ease-out),
    filter var(--dur) var(--ease-out);
}
/* A link styled as a button keeps the button's text colour on hover (the
   global a:hover would turn it link-blue), enabled or not. */
.btn:hover {
  color: var(--btn-fg);
}
/* Hover and press feedback only for usable controls: a disabled button (or a
   link marked aria-disabled) must not light up. :where() keeps the
   specificity of a plain `.btn:hover`, so pages can still restyle it. */
.btn:where(:not(:disabled, [aria-disabled='true'])):hover {
  --btn-glow: rgb(0 174 255 / 0.4);
  filter: brightness(1.07) saturate(1.05);
  box-shadow:
    inset 0 1px 0 var(--btn-hi),
    inset 0 -3px 0 rgb(0 0 0 / 0.18),
    0 2px 0 var(--btn-edge),
    0 6px 16px rgb(0 0 0 / 0.45),
    0 0 18px 1px var(--btn-glow);
}
.btn:where(:not(:disabled, [aria-disabled='true'])):active {
  transform: translateY(2px);
  filter: brightness(0.97);
  box-shadow:
    inset 0 2px 6px rgb(0 0 0 / 0.35),
    inset 0 -1px 0 rgb(255 255 255 / 0.1),
    0 0 0 var(--btn-edge),
    0 2px 5px rgb(0 0 0 / 0.4);
}
.btn:disabled,
.btn[aria-disabled='true'] {
  cursor: not-allowed;
  filter: grayscale(0.75) brightness(0.72);
  opacity: 0.62;
  transform: none;
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.15), 0 2px 0 var(--btn-edge);
}
.btn > svg {
  width: 1.15em;
  height: 1.15em;
  flex: none;
}
.btn .spinner {
  --spinner-size: 1.15em;
}

/* Primary: electric-blue call to action with a brass rim. */
.btn-primary {
  --btn-bg: linear-gradient(180deg, #9ae4ff 0%, #2cc0ff 18%, #00aeff 52%, #0085cc 100%);
  --btn-fg: var(--text-on-neon);
  --btn-border: #c8963e;
  --btn-edge: #00324f;
  --btn-hi: rgb(235 251 255 / 0.85);
  --btn-glow: rgb(0 174 255 / 0.35);
  text-shadow: 0 1px 0 rgb(220 248 255 / 0.45);
  box-shadow:
    inset 0 1px 0 var(--btn-hi),
    inset 0 -3px 0 rgb(0 30 60 / 0.25),
    0 2px 0 var(--btn-edge),
    0 5px 14px rgb(0 0 0 / 0.45),
    0 0 16px 0 var(--btn-glow);
}
.btn-primary:where(:not(:disabled, [aria-disabled='true'])):hover {
  --btn-glow: rgb(0 174 255 / 0.65);
}

.btn-danger {
  --btn-bg: linear-gradient(180deg, #f59a8f 0%, #e0574b 18%, #c73b30 55%, #962219 100%);
  --btn-fg: #fff6ef;
  --btn-border: #5a120c;
  --btn-edge: #3a0905;
  --btn-hi: rgb(255 220 214 / 0.55);
  text-shadow: 0 1px 0 rgb(60 5 0 / 0.5);
}
.btn-danger:where(:not(:disabled, [aria-disabled='true'])):hover {
  --btn-glow: rgb(229 83 75 / 0.45);
}

.btn-ghost {
  --btn-bg: rgb(241 228 200 / 0.02);
  --btn-fg: var(--text);
  --btn-border: rgb(200 150 62 / 0.45);
  text-shadow: none;
  box-shadow: none;
}
.btn-ghost:where(:not(:disabled, [aria-disabled='true'])):hover {
  --btn-fg: var(--brass-pale);
  --btn-bg: rgb(200 150 62 / 0.12);
  --btn-border: var(--brass);
  filter: none;
  box-shadow: 0 0 14px rgb(200 150 62 / 0.18);
}
.btn-ghost:where(:not(:disabled, [aria-disabled='true'])):active {
  box-shadow: inset 0 2px 5px rgb(0 0 0 / 0.4);
}
.btn-ghost:disabled,
.btn-ghost[aria-disabled='true'] {
  box-shadow: none;
}

.btn-sm {
  min-height: 30px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
}

.btn-lg {
  min-height: 52px;
  padding: 0 30px;
  border-radius: 12px;
  font-size: 17px;
  letter-spacing: 0.05em;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-icon {
  width: 40px;
  padding: 0;
}
.btn-icon.btn-sm {
  width: 30px;
}

/* =============================================================== panels === */

.panel {
  --rivet: radial-gradient(circle, #fbe6b4 0 12%, #d6a551 30%, #7d5a1f 58%, #241806 72%, transparent 76%);
  position: relative;
  padding: var(--space-5);
  border: 1px solid rgb(200 150 62 / 0.38);
  border-radius: var(--radius-lg);
  background:
    var(--rivet) left 9px top 9px / 9px 9px no-repeat,
    var(--rivet) right 9px top 9px / 9px 9px no-repeat,
    var(--rivet) left 9px bottom 9px / 9px 9px no-repeat,
    var(--rivet) right 9px bottom 9px / 9px 9px no-repeat,
    radial-gradient(120% 80% at 50% -20%, rgb(0 174 255 / 0.07), transparent 60%),
    linear-gradient(180deg, rgb(255 255 255 / 0.035), transparent 35%),
    linear-gradient(165deg, var(--surface-2), var(--surface) 55%, #0b181d);
  box-shadow:
    inset 0 1px 0 rgb(241 228 200 / 0.08),
    inset 0 0 0 1px rgb(0 0 0 / 0.45),
    var(--shadow);
}

/* Neon-lit variant for the panel that matters most on a screen. */
.panel-glow {
  border-color: rgb(0 174 255 / 0.55);
  box-shadow:
    inset 0 1px 0 rgb(241 228 200 / 0.08),
    inset 0 0 0 1px rgb(0 0 0 / 0.45),
    0 0 0 1px rgb(0 174 255 / 0.15),
    0 0 28px rgb(0 174 255 / 0.18),
    var(--shadow);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0 0 var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font: 700 var(--fs-lg) / 1.2 var(--font-heading);
  font-variant: small-caps;
  letter-spacing: 0.05em;
  color: var(--brass-light);
}
.panel-title::before {
  content: '';
  width: 10px;
  height: 10px;
  flex: none;
  transform: rotate(45deg);
  border: 2px solid var(--neon);
  box-shadow: 0 0 8px rgb(0 174 255 / 0.7);
}

/* ================================================================ forms === */

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.field > label,
.field-label {
  font: 700 11.5px / 1.2 var(--font-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass-light);
}

.field-hint {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.field-error {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--danger-light);
}

.input,
.select {
  width: 100%;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid rgb(200 150 62 / 0.38);
  border-radius: var(--radius-sm);
  font: 400 var(--fs-md) / 1.25 var(--font-ui);
  color: var(--text);
  background: linear-gradient(180deg, #061015, #0a171c);
  box-shadow: inset 0 2px 5px rgb(0 0 0 / 0.55), 0 1px 0 rgb(255 255 255 / 0.04);
  transition: border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}
textarea.input {
  min-height: 96px;
  padding: 10px 12px;
  resize: vertical;
}
.input::placeholder {
  color: var(--text-muted);
  opacity: 1;
}
.input:where(:not(:disabled)):hover,
.select:where(:not(:disabled)):hover {
  border-color: rgb(200 150 62 / 0.62);
}
.input:focus,
.select:focus {
  outline: none;
  border-color: var(--neon);
  box-shadow: inset 0 2px 5px rgb(0 0 0 / 0.55), 0 0 0 3px rgb(0 174 255 / 0.22), 0 0 16px rgb(0 174 255 / 0.25);
}
.input:disabled,
.select:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.input[aria-invalid='true'],
.select[aria-invalid='true'],
.field.has-error .input,
.field.has-error .select {
  border-color: var(--danger);
}

.select {
  appearance: none;
  padding-right: 36px;
  cursor: pointer;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23e8c47c' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") right 13px center / 12px 8px no-repeat,
    linear-gradient(180deg, #0b1a20, #081318);
}
.select option {
  color: var(--text);
  background: #0b181d;
}

/* ================================================================= tabs === */

/* A horizontal scroller when the tabs don't fit. Like every scroll container
   it clips whatever sticks out of its box, so .tab draws its focus ring inset. */
.tabs {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  overflow-y: hidden;
  border-bottom: 1px solid var(--line-strong);
  scrollbar-width: none;
}

.tab {
  position: relative;
  flex: none;
  padding: 12px 18px 11px;
  border: 0;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font: 700 12.5px / 1 var(--font-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-dim);
  background: transparent;
  cursor: pointer;
  transition: color var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out);
}
.tab:where(:not(:disabled, [aria-disabled='true'])):hover {
  color: var(--parchment);
  background: rgb(241 228 200 / 0.04);
}
.tab:focus-visible {
  outline-offset: -2px;
}
.tab.active,
.tab[aria-selected='true'],
.tab[aria-current='page'] {
  color: var(--brass-pale);
  background: linear-gradient(180deg, rgb(200 150 62 / 0.14), rgb(200 150 62 / 0.02));
}
.tab.active::after,
.tab[aria-selected='true']::after,
.tab[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--brass), var(--neon), var(--brass));
  box-shadow: 0 0 10px rgb(0 174 255 / 0.8);
}
.tab:disabled,
.tab[aria-disabled='true'] {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ======================================================= badges & gems === */

.badge {
  --badge-color: var(--parchment);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 3px 9px;
  border: 1px solid color-mix(in srgb, var(--badge-color) 45%, transparent);
  border-radius: var(--radius-pill);
  font: 700 11px / 1.3 var(--font-ui);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--badge-color);
  background: color-mix(in srgb, var(--badge-color) 12%, rgb(5 13 16 / 0.6));
}
.badge-brass { --badge-color: var(--brass-light); }
.badge-neon { --badge-color: var(--neon-light); box-shadow: 0 0 10px rgb(0 174 255 / 0.25); }
.badge-success { --badge-color: var(--success); }
.badge-warning { --badge-color: var(--warning); }
.badge-danger { --badge-color: var(--danger-light); }
.badge-common, .badge[data-rarity='common'] { --badge-color: var(--rarity-common); }
.badge-rare, .badge[data-rarity='rare'] { --badge-color: var(--rarity-rare); }
.badge-epic, .badge[data-rarity='epic'] { --badge-color: #c68bf6; }
.badge-legendary, .badge[data-rarity='legendary'] { --badge-color: var(--rarity-legendary); box-shadow: 0 0 10px rgb(245 184 63 / 0.3); }

/* A solid "count" bubble (e.g. ×3 owned). */
.badge-solid {
  color: var(--text-on-brass);
  background: linear-gradient(180deg, var(--brass-pale), var(--brass));
  border-color: var(--brass-deep);
}

.gem-count {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 13px 5px 9px;
  border: 1px solid rgb(0 174 255 / 0.5);
  border-radius: var(--radius-pill);
  font: 800 15px / 1 var(--font-ui);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: #e3f7ff;
  background: linear-gradient(180deg, #0c2230, #061219);
  box-shadow: inset 0 0 12px rgb(0 174 255 / 0.16), 0 0 14px rgb(0 174 255 / 0.18);
}
.gem-count::before {
  content: '';
  width: 1.2em;
  height: 1.05em;
  flex: none;
  clip-path: polygon(22% 0, 78% 0, 100% 34%, 50% 100%, 0 34%);
  background:
    linear-gradient(180deg, transparent 0 33%, rgb(0 40 70 / 0.25) 33% 36%, transparent 36%),
    conic-gradient(from 200deg at 50% 38%, #d9f6ff, #36c5ff 25%, #0087d1 45%, #005b8f 60%, #38c8ff 80%, #d9f6ff);
}
.gem-count.is-bumped {
  animation: gem-bump 420ms var(--ease-snap);
}
/* The top bar's counter before the real balance is known (shows "—"). */
.gem-count[data-state='unknown'] .gem-count-value {
  color: var(--text-muted);
}
@keyframes gem-bump {
  0% { transform: scale(1); }
  35% { transform: scale(1.14); box-shadow: inset 0 0 12px rgb(0 174 255 / 0.3), 0 0 26px rgb(0 174 255 / 0.6); }
  100% { transform: scale(1); }
}

/* ============================================================= top nav === */

/* A page may reserve the bar's place with <div data-topnav></div>; the host
   must not box the bar in, or `position: sticky` would stop at its edge. */
[data-topnav] {
  display: contents;
}

.topnav {
  /* One-row spacing. nav.js reads both (as px) to work out whether the brand,
     links and account cluster fit on one row. */
  --topnav-gap: var(--space-5);
  --topnav-pad-x: var(--space-5);

  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  gap: var(--topnav-gap);
  min-height: var(--topnav-min-h);
  /* Until nav.js has moved the links to a second row (a resize is noticed a
     frame late at worst), the one-row layout can be wider than the screen:
     clip it instead of making the whole page scroll sideways. Vertical
     overflow (the sound panel fallback) stays visible. */
  overflow-x: clip;
  padding: 0 var(--topnav-pad-x);
  border-bottom: 1px solid var(--brass-dark);
  background:
    linear-gradient(180deg, rgb(21 42 50 / 0.97), rgb(9 21 26 / 0.95));
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 rgb(0 0 0 / 0.6), 0 10px 26px rgb(0 0 0 / 0.35);
}
.topnav::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent 0%, var(--neon) 18%, var(--neon-light) 50%, var(--neon) 82%, transparent 100%);
  box-shadow: 0 0 10px 1px rgb(0 174 255 / 0.65);
  opacity: 0.8;
}

.topnav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--parchment);
  text-decoration: none;
}
.topnav-brand:hover {
  color: var(--brass-pale);
}
.topnav-logo {
  width: 32px;
  height: 32px;
  flex: none;
  filter: drop-shadow(0 0 6px rgb(0 174 255 / 0.45));
}
.topnav-title {
  overflow: hidden;
  font: 700 21px / 1 var(--font-heading);
  font-variant: small-caps;
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-overflow: ellipsis;
  text-shadow: 0 1px 0 rgb(0 0 0 / 0.6);
}

.topnav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.topnav-link {
  position: relative;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font: 700 12.5px / 1 var(--font-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  color: var(--text-dim);
  transition: color var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out);
}
.topnav-link:hover {
  color: var(--parchment);
  background: rgb(241 228 200 / 0.06);
}
.topnav-link[aria-current='page'] {
  color: var(--neon-light);
  background: rgb(0 174 255 / 0.1);
  box-shadow: inset 0 0 0 1px rgb(0 174 255 / 0.3);
}
.topnav-link[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon);
  box-shadow: 0 0 8px var(--neon);
}

.topnav-right {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

.topnav-user {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  font-weight: 600;
  color: var(--text-dim);
}
.topnav-avatar {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 50%;
  font: 700 14px / 1 var(--font-heading);
  color: var(--text-on-brass);
  background: radial-gradient(circle at 35% 30%, var(--brass-pale), var(--brass) 55%, var(--brass-dark));
  box-shadow: 0 0 0 2px var(--bg-1), 0 0 0 3px rgb(0 174 255 / 0.55);
}
.topnav-username {
  max-width: 160px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* Stacked: the links get a row of their own. nav.js switches this on whenever
   one row would squeeze the game title (a narrow window, a long configured
   title or username), so the title is never cut short while there's room. */
.topnav--stacked {
  flex-wrap: wrap;
  gap: 6px 12px;
  padding: 8px 14px;
}
.topnav--stacked .topnav-links {
  order: 3;
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
}
/* The links row scrolls sideways and so clips anything outside its box. */
.topnav--stacked .topnav-link:focus-visible {
  outline-offset: -2px;
}

@media (max-width: 860px) {
  .topnav-username {
    display: none;
  }
}

/* ======================================================== sound toggle === */

.sound-toggle {
  position: relative;
  display: inline-flex;
}

.sound-toggle-btn {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid rgb(200 150 62 / 0.5);
  border-radius: 50%;
  color: var(--neon-light);
  background: radial-gradient(circle at 35% 30%, #1d3a45, #0a171c 70%);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.08), 0 2px 6px rgb(0 0 0 / 0.4);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), color var(--dur);
}
.sound-toggle-btn:hover,
.sound-toggle-btn[aria-expanded='true'] {
  border-color: var(--neon);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.08), 0 0 14px rgb(0 174 255 / 0.45);
}
.sound-toggle-btn svg {
  width: 19px;
  height: 19px;
}
.sound-toggle[data-muted='true'] .sound-toggle-btn {
  color: var(--text-muted);
}
.sound-toggle .sound-waves { transition: opacity var(--dur); }
.sound-toggle .sound-mute-x { opacity: 0; transition: opacity var(--dur); }
.sound-toggle[data-muted='true'] .sound-waves { opacity: 0; }
.sound-toggle[data-muted='true'] .sound-mute-x { opacity: 1; }

.sound-popover {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: var(--z-popover);
  width: 250px;
  padding: 14px 16px 16px;
  border: 1px solid rgb(200 150 62 / 0.5);
  border-radius: var(--radius);
  background: linear-gradient(170deg, #16303a, #0c1b21);
  box-shadow: var(--shadow-lg), 0 0 20px rgb(0 174 255 / 0.15);
  animation: pop-in var(--dur) var(--ease-snap);
  transform-origin: top right;
}
.sound-popover:not([popover])[data-placement='up'] {
  top: auto;
  bottom: calc(100% + 10px);
}
.sound-popover[data-placement='up'] {
  transform-origin: bottom right;
}
/* Top-layer panel (Popover API): positioned next to the button by audio.js. */
.sound-popover[popover] {
  position: fixed;
  inset: auto;
  margin: 0;
  overflow: visible;
  color: var(--text);
}
.sound-popover-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.sound-popover-title {
  font: 700 15px / 1 var(--font-heading);
  font-variant: small-caps;
  letter-spacing: 0.06em;
  color: var(--brass-light);
}
.sound-row {
  display: grid;
  grid-template-columns: 58px 1fr 34px;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  font-size: var(--fs-sm);
  color: var(--text-dim);
}
.sound-row input[type='range'] {
  width: 100%;
  margin: 0;
}
.sound-row--select {
  grid-template-columns: 76px 1fr;
}
.sound-row select {
  width: 100%;
  min-width: 0;
}
.sound-row output {
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--text-muted);
}

@keyframes pop-in {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

/* =============================================================== modal === */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: var(--space-5);
  background:
    radial-gradient(circle at 50% 40%, rgb(0 174 255 / 0.08), transparent 60%),
    rgb(2 7 9 / 0.74);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  animation: fade-in var(--dur) var(--ease-out);
}
.modal-backdrop.is-closing {
  pointer-events: none; /* the page is usable again while the dialog fades */
  animation: fade-out 130ms var(--ease-out) forwards;
}

.modal {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(520px, 100%);
  max-height: calc(100vh - 2 * var(--space-5));
  overflow: hidden;
  border: 1px solid var(--brass);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 70% at 50% -10%, rgb(0 174 255 / 0.1), transparent 60%),
    linear-gradient(170deg, #173139, #0e1f25 60%, #0b181d);
  box-shadow:
    inset 0 1px 0 rgb(241 228 200 / 0.1),
    0 0 0 1px rgb(0 0 0 / 0.6),
    0 0 40px rgb(0 174 255 / 0.14),
    var(--shadow-lg);
  animation: modal-in 220ms var(--ease-snap);
}
/* modal({ size: 'wide' }): room for a large card preview beside its text. */
.modal-wide {
  width: min(900px, 100%);
}
.modal:focus {
  outline: none;
}
.modal-backdrop.is-closing .modal {
  animation: modal-out 130ms var(--ease-out) forwards;
}

.modal-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--line);
}
.modal-title {
  flex: 1;
  margin: 0;
  font: 700 var(--fs-xl) / 1.2 var(--font-heading);
  font-variant: small-caps;
  letter-spacing: 0.04em;
  color: var(--brass-pale);
}
.modal-close {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin: -4px -6px -4px auto;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 50%;
  font: 400 22px / 1 var(--font-ui);
  color: var(--text-dim);
  background: transparent;
  cursor: pointer;
}
.modal-close:hover {
  color: var(--parchment);
  border-color: var(--line-strong);
  background: rgb(241 228 200 / 0.05);
}
.modal-body {
  overflow: auto;
  padding: 18px 20px;
  color: var(--text-dim);
}
.modal-body > :last-child {
  margin-bottom: 0;
}
.modal-message {
  white-space: pre-line;
}
.modal-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
/* promptDialog({ validate }) shows the problem right under the input. */
.modal-form .field-error {
  margin: calc(-1 * var(--space-1)) 0 0;
}
.modal-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: 14px 20px 18px;
  border-top: 1px solid var(--line);
  background: rgb(0 0 0 / 0.15);
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes fade-out { from { opacity: 1; } to { opacity: 0; } }
@keyframes modal-in {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to { opacity: 1; transform: none; }
}
@keyframes modal-out {
  from { opacity: 1; transform: none; }
  to { opacity: 0; transform: translateY(6px) scale(0.98); }
}

/* =============================================================== toast === */

/* Toasts (ui.js toast()) live in one stack per corner:
   .toast-stack[data-placement='top-right' | 'bottom-right' | 'bottom-left' | 'top-left'].
   Pick the corner per toast with toast(msg, { placement }) or for the whole
   page with setToastPlacement(). The distance from the screen edges comes
   from four custom properties, each 16px by default; set them on body (or on
   .toast-stack) to move the stacks:
     --toast-top     top corners; body.has-topnav / body.has-banner set it so
                     toasts clear the top bar and the page banner
     --toast-right   right corners
     --toast-bottom  bottom corners
     --toast-left    left corners
   The stack itself lets clicks through, but every toast TAKES pointer events
   (its close button; hovering pauses its timer): keep toasts away from
   controls people need while one is showing, or let a drag pass through the
   .toast-stack. Bottom stacks grow upwards, so the oldest toast stays next to
   the edge in every corner. */
.toast-stack {
  --toast-shift: 24px; /* the slide-in comes from this side */
  position: fixed;
  top: var(--toast-top, 16px);
  right: var(--toast-right, 16px);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  width: min(380px, calc(100vw - 32px));
  pointer-events: none;
}
.toast-stack[data-placement$='left'] {
  --toast-shift: -24px;
  right: auto;
  left: var(--toast-left, 16px);
  align-items: flex-start;
}
.toast-stack[data-placement^='bottom'] {
  top: auto;
  bottom: var(--toast-bottom, 16px);
  flex-direction: column-reverse;
}
body.has-topnav {
  --toast-top: calc(var(--topnav-h) + 14px);
}

.toast {
  --toast-accent: var(--neon);
  display: flex;
  align-items: flex-start;
  gap: 11px;
  width: 100%;
  padding: 12px 12px 12px 14px;
  border: 1px solid color-mix(in srgb, var(--toast-accent) 45%, transparent);
  border-left: 4px solid var(--toast-accent);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  line-height: 1.4;
  color: var(--text);
  background: linear-gradient(170deg, #173039, #0d1d23);
  box-shadow: var(--shadow), 0 0 18px color-mix(in srgb, var(--toast-accent) 22%, transparent);
  pointer-events: auto;
  animation: toast-in 240ms var(--ease-snap);
}
.toast.is-leaving {
  animation: toast-out 160ms var(--ease-out) forwards;
}
.toast-success { --toast-accent: var(--success); }
.toast-error { --toast-accent: var(--danger); }
.toast-info { --toast-accent: var(--neon); }

.toast-icon {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  flex: none;
  border-radius: 50%;
  font: 800 12px / 1 var(--font-ui);
  color: #051015;
  background: var(--toast-accent);
  box-shadow: 0 0 8px var(--toast-accent);
}
.toast-info .toast-icon::before { content: 'i'; }
.toast-success .toast-icon::before { content: '\2713'; }
.toast-error .toast-icon::before { content: '!'; }
.toast-message {
  flex: 1;
  padding-top: 1px;
  overflow-wrap: anywhere;
}
.toast-close {
  flex: none;
  width: 22px;
  height: 22px;
  margin: -2px -2px 0 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  font: 400 17px / 1 var(--font-ui);
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
}
.toast-close:hover {
  color: var(--parchment);
  background: rgb(241 228 200 / 0.08);
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(var(--toast-shift, 24px)) scale(0.97); }
  to { opacity: 1; transform: none; }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateX(var(--toast-shift, 24px)); }
}

/* ============================================================== banner === */

.banner {
  --banner-accent: var(--neon);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px 12px 16px;
  border: 1px solid color-mix(in srgb, var(--banner-accent) 50%, transparent);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  line-height: 1.45;
  color: var(--text);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--banner-accent) 16%, transparent), transparent 70%),
    #0c1b21;
}
.banner::before {
  content: 'i';
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  flex: none;
  border-radius: 50%;
  font: 800 13px / 1 var(--font-ui);
  color: #051015;
  background: var(--banner-accent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--banner-accent) 70%, transparent);
}
.banner-error { --banner-accent: var(--danger); }
.banner-error::before { content: '!'; }
.banner-warning { --banner-accent: var(--warning); }
.banner-warning::before { content: '!'; }
.banner-success { --banner-accent: var(--success); }
.banner-success::before { content: '\2713'; }

.banner-message {
  flex: 1;
}
.banner-close {
  flex: none;
  width: 26px;
  height: 26px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  font: 400 18px / 1 var(--font-ui);
  color: var(--text-dim);
  background: transparent;
  cursor: pointer;
}
.banner-close:hover {
  color: var(--parchment);
  background: rgb(241 228 200 / 0.08);
}

/* The page-wide banner shown by ui.js showBanner(). */
.banner-global {
  position: fixed;
  top: calc(var(--banner-top, 0px) + 12px);
  left: 50%;
  z-index: var(--z-banner);
  width: min(760px, calc(100vw - 32px));
  transform: translateX(-50%);
  box-shadow: var(--shadow-lg), 0 0 24px color-mix(in srgb, var(--banner-accent) 30%, transparent);
  animation: banner-in 260ms var(--ease-snap);
}
body.has-topnav {
  --banner-top: var(--topnav-h);
}
/* While the page banner shows, toasts start below it. */
body.has-banner {
  --toast-top: calc(var(--banner-top, 0px) + 86px);
}
@keyframes banner-in {
  from { opacity: 0; transform: translate(-50%, -12px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* ============================================================= spinner === */

/* A brass gear: 12 teeth (conic) + solid body (radial), hollow hub (mask). */
.spinner {
  --spinner-size: 28px;
  display: inline-block;
  width: var(--spinner-size);
  height: var(--spinner-size);
  flex: none;
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--brass-light) 0 58%, transparent 59%),
    repeating-conic-gradient(var(--brass) 0 15deg, transparent 15deg 30deg);
  -webkit-mask: radial-gradient(circle, transparent 0 21%, #000 22%);
  mask: radial-gradient(circle, transparent 0 21%, #000 22%);
  filter: drop-shadow(0 0 4px rgb(0 174 255 / 0.65));
  animation: spin 1.1s linear infinite;
  vertical-align: middle;
}
.spinner-lg {
  --spinner-size: 56px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========================================================= empty state === */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-7) var(--space-5);
  border: 1px dashed rgb(200 150 62 / 0.4);
  border-radius: var(--radius-lg);
  text-align: center;
  color: var(--text-dim);
  background: radial-gradient(60% 80% at 50% 0%, rgb(0 174 255 / 0.06), transparent 70%), rgb(5 13 16 / 0.45);
}
.empty-state::before {
  content: '';
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-2);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgb(0 174 255 / 0.9) 0 16%, transparent 17% 30%, var(--brass) 31% 58%, transparent 59%),
    repeating-conic-gradient(var(--brass) 0 12deg, transparent 12deg 30deg);
  -webkit-mask: radial-gradient(circle, #000 0 16%, transparent 17% 30%, #000 31%);
  mask: radial-gradient(circle, #000 0 16%, transparent 17% 30%, #000 31%);
  opacity: 0.85;
  filter: drop-shadow(0 0 10px rgb(0 174 255 / 0.5));
}
.empty-state h2,
.empty-state h3,
.empty-state-title {
  margin: 0;
  font: 700 var(--fs-xl) / 1.2 var(--font-heading);
  font-variant: small-caps;
  color: var(--parchment);
}
.empty-state p {
  max-width: 48ch;
  margin: 0;
}
.empty-state .btn {
  margin-top: var(--space-2);
}

/* ================================================================ misc === */

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--fs-sm);
}
.table th {
  padding: 8px 12px;
  border-bottom: 1px solid var(--line-strong);
  font: 700 11px / 1.2 var(--font-ui);
  letter-spacing: 0.14em;
  text-align: left;
  text-transform: uppercase;
  color: var(--brass-light);
}
.table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--text-dim);
}
.table tbody tr:hover td {
  background: rgb(0 174 255 / 0.05);
}

.progress {
  position: relative;
  height: 10px;
  overflow: hidden;
  border: 1px solid rgb(200 150 62 / 0.4);
  border-radius: var(--radius-pill);
  background: var(--well);
  box-shadow: inset 0 1px 3px rgb(0 0 0 / 0.6);
}
.progress-bar {
  width: var(--value, 0%);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--neon-dark), var(--neon) 70%, var(--neon-light));
  box-shadow: 0 0 10px rgb(0 174 255 / 0.6);
  transition: width var(--dur-slow) var(--ease-out);
}
.progress-brass .progress-bar {
  background: linear-gradient(90deg, var(--brass-dark), var(--brass) 70%, var(--brass-pale));
  box-shadow: 0 0 10px rgb(200 150 62 / 0.5);
}

/* <label class="switch"><input type="checkbox"><span class="switch-track"></span>Label</label>
   The label is the containing block of its visually hidden checkbox. Without
   that, the checkbox is positioned against some outer ancestor: inside a
   scroll container it stays where the label was before scrolling, and
   focusing it (every click on the switch does) scrolls that container. */
.switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-sm);
  color: var(--text-dim);
  cursor: pointer;
}
.switch input {
  position: absolute;
  top: 0;
  left: 0;
  margin: 0;
  opacity: 0;
  width: 1px;
  height: 1px;
}
.switch-track {
  position: relative;
  width: 40px;
  height: 22px;
  flex: none;
  border: 1px solid rgb(200 150 62 / 0.5);
  border-radius: var(--radius-pill);
  background: var(--well);
  box-shadow: inset 0 1px 4px rgb(0 0 0 / 0.6);
  transition: background-color var(--dur), border-color var(--dur);
}
.switch-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--brass-pale), var(--brass) 60%, var(--brass-dark));
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.6);
  transition: transform var(--dur) var(--ease-snap);
}
.switch input:checked + .switch-track {
  border-color: var(--neon);
  background: rgb(0 174 255 / 0.3);
  box-shadow: inset 0 1px 4px rgb(0 0 0 / 0.4), 0 0 10px rgb(0 174 255 / 0.35);
}
.switch input:checked + .switch-track::after {
  transform: translateX(18px);
}
.switch input:focus-visible + .switch-track {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 0.12em 0.45em;
  border: 1px solid rgb(200 150 62 / 0.5);
  border-bottom-width: 3px;
  border-radius: 5px;
  font: 700 0.82em / 1.3 var(--font-mono);
  text-align: center;
  color: var(--brass-pale);
  background: linear-gradient(180deg, #1b333c, #0e1d23);
}

/* =========================================================== card grid === */

.grid-cards {
  --card-min: 170px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--card-min), 1fr));
  gap: var(--space-5) var(--space-4);
  align-items: start;
}
.grid-cards > .card {
  width: 100% !important;
}

/* ============================================================== motion === */

/* Reduced motion: everything that moves finishes at once. Delays are zeroed
   too, or a staggered reveal would still hold content back (and a delayed
   fade would leave it invisible for the length of the delay). */
/* Reduced motion: the OS setting, unless the player overrode it (Shared/motion.js sets data-motion). */
@media (prefers-reduced-motion: reduce) {
  :root:not([data-motion='full']) *,
  :root:not([data-motion='full']) *::before,
  :root:not([data-motion='full']) *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
    scroll-behavior: auto !important;
  }
  /* Loading indicators keep turning, slowly: they carry information. */
  :root:not([data-motion='full']) .spinner {
    animation-duration: 2.4s !important;
    animation-iteration-count: infinite !important;
  }
}
:root[data-motion='reduced'] *,
:root[data-motion='reduced'] *::before,
:root[data-motion='reduced'] *::after {
  animation-duration: 0.01ms !important;
  animation-delay: 0s !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  transition-delay: 0s !important;
  scroll-behavior: auto !important;
}
/* Loading indicators keep turning, slowly: they carry information. */
:root[data-motion='reduced'] .spinner {
  animation-duration: 2.4s !important;
  animation-iteration-count: infinite !important;
}