:root {
  --ink: #f2e9ff;
  --muted: #93a3c2;
  --bg: #0b0e1f;
  --bg2: #141a3d;
  --accent: #6ef2c9;
  --accent2: #ff9b3d;
  --danger: #ff5d6c;
  --panel: #12183aee;
  --panel-border: #2c3550;
  --cell-bg: #0e1330;
  --cell-border: #232b52;
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(ellipse at 80% -10%, #7c4dff22, transparent 55%),
    radial-gradient(ellipse at 10% 100%, #6ef2c922, transparent 50%),
    var(--bg);
  color: var(--ink);
}

body { padding: 24px 20px 60px; }

.topbar { max-width: 1100px; margin: 0 auto 20px; }
.topbar h1 { font-size: 34px; margin: 0 0 6px; letter-spacing: -0.02em; }
.topbar .accent { color: var(--accent); }
.tagline { color: var(--muted); margin: 0; font-size: 15px; max-width: 60ch; }

.layout {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 880px) {
  .layout { grid-template-columns: 1fr; }
}

.stage, .sheet-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 16px;
}

#runner {
  width: 100%;
  height: auto;
  aspect-ratio: 760 / 320;
  display: block;
  background: linear-gradient(180deg, #0d1230, #080a1c);
  border-radius: 10px;
  border: 1px solid var(--panel-border);
}

.hud {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.hud-stat { display: flex; flex-direction: column; gap: 2px; }
.hud-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.hud-value { font-size: 20px; font-weight: 700; }
#status.fell { color: var(--danger); }

.run-btn {
  margin-left: auto;
  background: var(--accent);
  color: #06251c;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.run-btn:hover { filter: brightness(1.08); }

.sheet-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.sheet-head h2 { margin: 0; font-size: 16px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }

.presets { display: flex; gap: 8px; flex-wrap: wrap; }
.presets button {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--panel-border);
  border-radius: 7px;
  padding: 6px 10px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
.presets button:hover { border-color: var(--accent); color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.cell {
  position: relative;
  background: var(--cell-bg);
  border: 1px solid var(--cell-border);
  border-radius: 8px;
  padding: 6px 6px 20px;
  min-height: 64px;
}
.cell.primary {
  border-color: var(--accent2);
  background: #1a1430;
}

.badge {
  position: absolute;
  top: 4px;
  right: 6px;
  background: var(--accent2);
  color: #241100;
  font-weight: 800;
  font-size: 11px;
  padding: 1px 5px;
  border-radius: 5px;
}

.cell-label {
  display: block;
  font-size: 10px;
  color: var(--muted);
  margin-bottom: 3px;
}
.cell-label.dim { opacity: 0.55; }

.cell-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--cell-border);
  color: var(--ink);
  font: inherit;
  font-size: 12px;
  padding: 2px 0;
}
.cell-input:focus {
  outline: none;
  border-bottom-color: var(--accent);
}

.cell-out {
  position: absolute;
  bottom: 4px;
  left: 7px;
  font-size: 10px;
  color: var(--accent);
}
.cell-out.err { color: var(--danger); }

.hint {
  margin: 14px 0 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}
.hint code {
  background: #0e1330;
  border: 1px solid var(--cell-border);
  border-radius: 4px;
  padding: 1px 4px;
}

.splat {
  position: fixed;
  inset: 0;
  background: #05060fcc;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  padding: 20px;
}
.splat-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 28px 32px;
  text-align: center;
  max-width: 380px;
}
.splat-card h2 {
  margin: 0 0 8px;
  color: var(--danger);
  font-size: 32px;
  letter-spacing: 0.05em;
}
.splat-distance { font-size: 28px; font-weight: 800; margin: 0; }
.splat-sub { color: var(--muted); margin: 4px 0 18px; }

.splat-actions { display: flex; flex-direction: column; gap: 8px; }
.splat-actions button, .splat-actions a {
  font: inherit;
  font-weight: 700;
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
  text-decoration: none;
}
#restart-btn { background: var(--accent); color: #06251c; border: none; }
#share-btn { background: transparent; color: var(--ink); border: 1px solid var(--panel-border); }
.bsky-btn { background: #1a80e5; color: #fff; border: none; }

.credit {
  max-width: 1100px;
  margin: 28px auto 0;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}
.credit a { color: var(--accent); }