/* AI Auction Night home page. All styling lives here: the page has no inline styles.
   The colours and the font are those of the replay page (viewer/style.css): tokens on :root, with a
   light theme under prefers-color-scheme. --accent-text is the accent for small text and for the
   fill of a button, a little darker in the light theme so that the text on it can be read. */

:root {
  --bg: #12141c;
  --panel: #1a1e2a;
  --panel-2: #232839;
  --ink: #ebe7db;
  --muted: #9ba1b6;
  --line: #2f3550;
  --accent: #f0b44c;
  --accent-ink: #1b1405;
  --accent-text: #f0b44c;
  --gain: #5fcb92;
  --loss: #ee8a74;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f2e9;
    --panel: #fffdf8;
    --panel-2: #f0eadb;
    --ink: #2a261f;
    --muted: #6c6658;
    --line: #ddd3bd;
    --accent: #b4730b;
    --accent-ink: #ffffff;
    --accent-text: #8a5600;
    --gain: #1d7a4a;
    --loss: #b13c27;
  }
}

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

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 system-ui, -apple-system, 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', sans-serif;
}

h1,
h2,
h3 {
  line-height: 1.25;
}

a {
  color: var(--accent-text);
}

/* Chinese text breaks after its punctuation, not inside a word. A line of Latin text is not
   affected, and a very long word still breaks rather than widen the page. */
.lead,
.block p,
.card-body,
.stage figcaption {
  word-break: keep-all;
  overflow-wrap: break-word;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ------------------------------------------------------------------------------ top bar */

.top {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.top-row {
  display: flex;
  justify-content: flex-end;
  padding-top: 8px;
  padding-bottom: 8px;
}

.lang {
  display: flex;
  gap: 6px;
}

.lang-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--ink);
  padding: 4px 12px;
  border-radius: 999px;
  font: inherit;
  font-size: 13.5px;
  cursor: pointer;
}

.lang-btn:hover {
  border-color: var(--accent);
}

.lang-btn[aria-pressed='true'] {
  border-color: var(--accent-text);
  background: var(--accent-text);
  color: var(--accent-ink);
  font-weight: 600;
  cursor: default;
}

/* ------------------------------------------------------------------------------- title */

.hero {
  padding: 28px 0 0;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 6vw, 44px);
  letter-spacing: 0.04em;
  color: var(--accent);
}

.lead {
  margin: 0 0 20px;
  max-width: 42em;
  font-size: 18px;
  line-height: 1.6;
  text-wrap: balance;
}

/* The GIF carries its own one-pixel outline, so the figure adds no frame. */
.stage {
  margin: 0;
}

.stage img {
  display: block;
  width: 100%;
  height: auto;
}

.stage figcaption {
  padding: 10px 2px 0;
  color: var(--muted);
  font-size: 13.5px;
}

/* ---------------------------------------------------------------------------- sections */

.block {
  margin-top: 40px;
}

.block h2 {
  margin: 0 0 12px;
  padding-left: 10px;
  border-left: 3px solid var(--accent);
  font-size: 20px;
}

.block h3 {
  margin: 24px 0 8px;
  font-size: 16px;
}

.block p {
  margin: 0 0 12px;
}

.note {
  color: var(--muted);
  font-size: 14px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  text-decoration: none;
}

.card:hover {
  border-color: var(--accent);
}

.card-title {
  font-size: 16px;
}

.card-body {
  color: var(--muted);
  font-size: 14px;
}

.go {
  margin-top: auto;
  padding-top: 4px;
  color: var(--accent-text);
  font-size: 14px;
  font-weight: 600;
}

.go::after {
  content: ' \2192';
  content: ' \2192' / '';
}

.night-id {
  color: var(--muted);
  font: 13px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ------------------------------------------------------------------------- leaderboard */

.board-wrap {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  overflow: hidden;
}

.board-wrap > .note {
  margin: 0;
  padding: 14px 16px;
}

.board-wrap + .note {
  margin-top: 10px;
}

.board {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.board th,
.board td {
  padding: 9px 12px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: baseline;
}

.board thead th {
  border-top: 0;
  background: var(--panel-2);
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  word-break: keep-all; /* a Chinese heading stays on one line, an English one wraps at its spaces */
}

.board .num {
  text-align: right;
}

.board .rank {
  width: 3.5em;
  color: var(--muted);
  text-align: center;
}

.board .who {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.board .tag {
  display: inline-block;
  margin-left: 8px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
  white-space: nowrap;
}

.is-gain {
  color: var(--gain);
}

.is-loss {
  color: var(--loss);
}

/* --------------------------------------------------------------------------- button, foot */

.btn {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid var(--accent-text);
  border-radius: 999px;
  background: var(--accent-text);
  color: var(--accent-ink);
  font-weight: 600;
  text-decoration: none;
}

.btn:hover {
  filter: brightness(1.08);
}

.foot {
  margin-top: 48px;
  padding: 16px 0 32px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13.5px;
}

.foot-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.foot a {
  color: inherit;
}

/* ------------------------------------------------------------------------------ phones */

@media (max-width: 720px) {
  .cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding-top: 20px;
  }

  .lead {
    font-size: 17px;
  }

  .block {
    margin-top: 32px;
  }
}

@media (max-width: 520px) {
  .board {
    font-size: 13.5px;
  }

  .board th,
  .board td {
    padding: 8px 5px;
  }

  .board thead th {
    font-size: 12.5px;
  }

  .board .rank {
    width: 2.6em;
  }

  .board .tag {
    margin-left: 0;
  }
}

/* Controls are at least 44 px high and wide on a phone, on a short window and on any screen used
   with a finger. */
@media (max-width: 640px), (max-height: 520px), (pointer: coarse) {
  .lang-btn,
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
  }

  .card {
    min-height: 44px;
  }

  .foot a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }
}