:root {
  color-scheme: light dark;
  --bg: #f4f6f9;
  --fg: #151a21;
  --muted: #5f6b7a;
  --faint: #8a95a3;
  --border: #dde2e9;
  --accent: #2f6fe4;
  --card-bg: #ffffff;
  --card-hover: #f8faff;
  --chip-bg: #eef1f5;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --shadow-hover: 0 4px 12px rgba(16, 24, 40, 0.10);
  /* Side colours, shared with the decision panel inside the replay iframe. */
  --p1: #3f7be0;
  --p2: #e0873a;
  --win: #1f9d55;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101318;
    --fg: #e6e9ee;
    --muted: #9aa4b2;
    --faint: #6b7584;
    --border: #262c36;
    --accent: #6ea8ff;
    --card-bg: #171b22;
    --card-hover: #1c212a;
    --chip-bg: #222833;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.35);
    --p1: #5b8def;
    --p2: #f0a35e;
    --win: #56c98a;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }

/* ---- header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 1.25rem;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--fg);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-mark { width: 22px; height: 22px; flex: none; }
.back-link {
  margin-left: auto;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.back-link:hover { color: var(--fg); }

main { max-width: 54rem; margin: 0 auto; padding: 2rem 1.25rem 4rem; }

h1 { font-size: 1.6rem; line-height: 1.2; margin: 0 0 1rem; letter-spacing: -0.02em; }

/* ---- chips / badges ---- */
.chips { display: flex; flex-wrap: wrap; gap: 0.35rem; align-items: center; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--muted);
  font-size: 0.78rem;
  white-space: nowrap;
}
.chip-accent {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  font-weight: 600;
}

/* ---- list page ---- */
button {
  font: inherit;
  background: var(--card-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.5rem 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow);
}
button:hover { background: var(--card-hover); }

.replay-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; }
.replay-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.35rem 1rem;
  align-items: center;
  padding: 0.85rem 1.1rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none;
  transition: box-shadow 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}
.replay-card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.replay-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.matchup {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.5rem;
  font-size: 1.05rem;
  font-weight: 650;
  min-width: 0;
}
.matchup .vs { color: var(--faint); font-weight: 400; font-size: 0.85rem; }
.player { display: inline-flex; align-items: center; gap: 0.35rem; }
.player::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--side, var(--faint));
  flex: none;
  transform: translateY(-0.05em);
}
.player.p1 { --side: var(--p1); }
.player.p2 { --side: var(--p2); }
.player.lost { color: var(--muted); font-weight: 500; }
.winner-mark { color: var(--win); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }
.card-sub { grid-column: 1; color: var(--muted); font-size: 0.82rem; }
.card-side {
  grid-column: 2;
  grid-row: 1 / span 2;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: right;
}
.empty-state {
  color: var(--muted);
  text-align: center;
  padding: 3rem 1rem;
  border: 1px dashed var(--border);
  border-radius: 0.75rem;
}
.skeleton {
  height: 4.1rem;
  border-radius: 0.75rem;
  background: linear-gradient(90deg, var(--card-bg), var(--card-hover), var(--card-bg));
  background-size: 200% 100%;
  animation: shimmer 1.2s linear infinite;
  border: 1px solid var(--border);
}
@keyframes shimmer { to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) {
  .skeleton { animation: none; }
  .replay-card { transition: none; }
}
@media (max-width: 560px) {
  .replay-card { grid-template-columns: 1fr; }
  .card-side { grid-column: 1; grid-row: auto; flex-direction: row; align-items: center; }
}

/* ---- replay viewer page ---- */
/* Wide enough for the official client's battle (640px) plus its log, so
   the iframe fits instead of overflowing the page. */
main.viewer-page { max-width: 1240px; }
.viewer-head { margin-bottom: 1rem; }
.viewer-head h1 { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.2rem 0.6rem; margin-bottom: 0.45rem; }
.viewer-head h1 .vs { color: var(--faint); font-weight: 400; font-size: 1rem; }
.viewer-head .subtitle { color: var(--muted); margin: 0 0 0.6rem; }

/* Embeds the REAL Showdown replay client (see functions/_shared/
   replay-template.js) via an iframe, rather than a custom-built viewer --
   the iframe's own document brings its own styling entirely, this just
   sizes/frames it within our page chrome. The frame stays dark in both
   themes: the client and the panels inside it are dark-styled. */
.replay-frame {
  display: block;
  width: 100%;
  height: 800px;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: #161a20;
  box-shadow: var(--shadow);
}
/* The decision panel (replay-template.js) is appended under the battle
   inside the iframe; the iframe can't size itself to it (opaque data:
   origin), so give it room. */
.replay-frame.has-decisions { height: 1450px; }