/* Hamster Friendship: design tokens and components. See DESIGN.md. */

:root {
  /* Primitives: named by hue. Components never use these directly. */
  --cream-50: #fff8ee;
  --cream-100: #fcefd9;
  --cream-200: #f6e2c3;
  --white: #ffffff;
  --sand-300: #e9d6bc;
  --brown-500: #8a6a4c;
  --brown-700: #6b4a2e;
  --brown-900: #3b2412;
  --orange-600: #b4530f;
  --orange-700: #96430b;
  --orange-800: #7c370a;
  --red-700: #a12c2c;

  /* Semantic tokens: named by role. */
  --color-bg-page: var(--cream-50);
  --color-bg-surface: var(--white);
  --color-bg-subtle: var(--cream-100);
  --color-bg-hover: var(--cream-200);
  --color-border: var(--sand-300);
  --color-border-strong: var(--brown-500);
  --color-text-primary: var(--brown-900);
  --color-text-secondary: var(--brown-700);
  --color-accent-solid: var(--orange-600);
  --color-accent-solid-hover: var(--orange-700);
  --color-accent-solid-pressed: var(--orange-800);
  --color-accent-text: var(--orange-700);
  --color-on-accent: var(--white);
  --color-text-error: var(--red-700);
  --color-focus: var(--brown-900);
  --color-backdrop: rgb(59 36 18 / 0.45);

  /* Type: one scale, five sizes. */
  --font-body: ui-rounded, "SF Pro Rounded", "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif;
  --text-sm: 0.875rem; /* 14px: labels, captions, table */
  --text-md: 1rem; /* 16px: body, buttons */
  --text-lg: 1.25rem; /* 20px: h2, HUD values, overlay title */
  --text-xl: 1.75rem; /* 28px: h1 on phones */
  --text-2xl: 2.5rem; /* 40px: h1 from 48rem */

  /* Spacing: 4px base. */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  /* Shape */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --shadow-sheet: 0 1px 2px rgb(59 36 18 / 0.08), 0 12px 32px rgb(59 36 18 / 0.18);
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
}

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

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

body {
  margin: 0;
  background: var(--color-bg-page);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1,
h2,
p,
dl,
dd {
  margin: 0;
}

h1,
h2 {
  line-height: 1.15;
  text-wrap: balance;
}

img,
svg,
canvas {
  display: block;
}

[hidden] {
  display: none !important;
}

.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;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.skip {
  position: absolute;
  inset-inline-start: var(--space-4);
  inset-block-start: -100px;
  z-index: 10;
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
}

.skip:focus-visible {
  inset-block-start: var(--space-2);
}

/* Header */
.top {
  padding-inline: var(--space-4);
  padding-block: var(--space-3);
}

.top-inner,
.intro,
.layout,
.foot {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
}

.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

/* Buttons */
.btn {
  -webkit-tap-highlight-color: transparent;
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  touch-action: manipulation;
  transition-property: background-color, border-color, color, scale;
  transition-duration: 150ms;
  transition-timing-function: var(--ease-out);
}

.btn:active:not(:disabled) {
  scale: 0.96;
}

.btn:disabled {
  opacity: 0.6;
  cursor: default;
}

.btn-primary {
  background: var(--color-accent-solid);
  color: var(--color-on-accent);
  min-width: 10rem;
}

.btn-secondary {
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
  white-space: nowrap;
  max-width: 60vw;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent-text);
  border-color: var(--color-border);
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  flex: none;
  background: var(--color-bg-subtle);
  color: var(--color-text-primary);
  border-color: var(--color-border);
  user-select: none;
  -webkit-user-select: none;
}

.btn-x {
  width: 40px;
  min-height: 40px;
  padding: 0;
  background: transparent;
  color: var(--color-text-primary);
}

@media (hover: hover) {
  .btn-primary:hover:not(:disabled) {
    background: var(--color-accent-solid-hover);
  }
  .btn-secondary:hover:not(:disabled),
  .btn-ghost:hover:not(:disabled),
  .btn-icon:hover:not(:disabled),
  .btn-x:hover {
    background: var(--color-bg-hover);
  }
}

.btn-primary:active:not(:disabled) {
  background: var(--color-accent-solid-pressed);
}

.btn-icon.is-held {
  background: var(--color-bg-hover);
  border-color: var(--color-border-strong);
}

/* Intro */
.intro {
  padding-inline: var(--space-4);
  padding-block: var(--space-2) var(--space-4);
}

h1 {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.lede {
  margin-block-start: var(--space-2);
  color: var(--color-text-secondary);
  max-width: 40rem;
  text-wrap: pretty;
}

/* Layout */
.layout {
  display: grid;
  gap: var(--space-4);
  padding-inline: var(--space-4);
  padding-block-end: var(--space-6);
}

.card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
}

/* Game */
.game-card:focus {
  outline: none;
}

.hud {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
  padding-block-end: var(--space-3);
}

.hud div {
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-1) var(--space-2);
  text-align: center;
}

.hud dt {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.hud dd {
  font-size: var(--text-lg);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.stage {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fdebc8;
  aspect-ratio: 4 / 3;
}

#field {
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: grab;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--space-2);
  background: rgb(255 248 238 / 0.72);
}

.overlay-box {
  display: grid;
  justify-items: center;
  gap: var(--space-2);
  max-width: 22rem;
  max-height: 100%;
  overflow-y: auto;
  padding: var(--space-4);
  text-align: center;
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sheet);
}

.overlay-title {
  font-size: var(--text-lg);
  font-weight: 800;
  line-height: 1.2;
}

.overlay-text,
.mode-note {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

.mode-note {
  padding-block-start: var(--space-2);
  text-align: center;
}

.controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-block-start: var(--space-3);
}

.hint {
  flex: 1;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-align: center;
  text-wrap: pretty;
}

/* Leaderboard */
.board {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}

.board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.board h2 {
  font-size: var(--text-lg);
  font-weight: 800;
}

.board-sub {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.you {
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-bg-subtle);
}

.board-state {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.board-state:empty {
  display: none;
}

.board-state.is-error {
  color: var(--color-text-error);
}

.table-wrap {
  max-height: 32rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}

th {
  text-align: start;
  font-weight: 700;
  color: var(--color-text-secondary);
  padding: var(--space-2);
  position: sticky;
  top: 0;
  background: var(--color-bg-surface);
}

td {
  padding: var(--space-2);
  border-block-start: 1px solid var(--color-border);
}

.num {
  text-align: end;
}

td.num {
  font-weight: 700;
}

tr.is-you td {
  background: var(--color-bg-subtle);
}

.tag {
  display: inline-block;
  margin-inline-start: var(--space-2);
  padding-inline: var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-accent-solid);
  color: var(--color-on-accent);
  font-weight: 700;
}

.addr {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

/* Footer */
.foot {
  margin-block-start: auto;
  padding: var(--space-4) var(--space-4) var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* Wallet sheet */
.sheet {
  border: 0;
  padding: 0;
  width: min(420px, 100vw);
  max-width: 100vw;
  max-height: 85vh;
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sheet);
  overscroll-behavior: contain;
}

.sheet::backdrop {
  background: var(--color-backdrop);
}

.sheet-inner {
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3);
}

.sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.sheet-head h2 {
  font-size: var(--text-lg);
  font-weight: 800;
}

.sheet-intro,
.sheet-note {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.sheet-note:empty {
  display: none;
}

.sheet-note.is-error {
  color: var(--color-text-error);
}

.sheet-body {
  display: grid;
  gap: var(--space-2);
}

.row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  min-height: 48px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  font: inherit;
  font-weight: 700;
  text-align: start;
  text-decoration: none;
  cursor: pointer;
  transition-property: background-color, border-color;
  transition-duration: 150ms;
  transition-timing-function: var(--ease-out);
}

.row img {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  flex: none;
}

.row:disabled {
  opacity: 0.6;
  cursor: default;
}

@media (hover: hover) {
  .row:hover:not(:disabled) {
    background: var(--color-bg-subtle);
    border-color: var(--color-border-strong);
  }
}

.row:active:not(:disabled) {
  background: var(--color-bg-hover);
}

.account {
  display: grid;
  gap: var(--space-3);
}

.account .addr {
  overflow-wrap: anywhere;
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
}

.account .btn {
  width: 100%;
}

/* Phones: the sheet is a bottom sheet. */
@media (max-width: 39.99rem) {
  .sheet {
    margin: auto 0 0;
    width: 100vw;
    border-end-start-radius: 0;
    border-end-end-radius: 0;
    padding-block-end: env(safe-area-inset-bottom);
  }
}

/* Two columns once the game and the table both fit side by side. */
@media (min-width: 48rem) {
  .top {
    padding-inline: var(--space-6);
  }
  .intro {
    padding-inline: var(--space-6);
    padding-block: var(--space-5) var(--space-5);
  }
  h1 {
    font-size: var(--text-2xl);
    letter-spacing: -0.02em;
  }
  .layout {
    padding-inline: var(--space-6);
    padding-block-end: var(--space-7);
  }
  .foot {
    padding-inline: var(--space-6);
  }
  .card {
    padding: var(--space-4);
  }
}

@media (min-width: 60rem) {
  .layout {
    grid-template-columns: minmax(0, 3fr) minmax(18rem, 2fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn,
  .row {
    transition-duration: 0ms;
  }
  .btn:active:not(:disabled) {
    scale: 1;
  }
}