styles.css

:root {
  --bg-page: #0f0f0f;
  --bg-surface: #1a1410;
  --bg-alt: #15110d;
  --border-strong: #3d2418;
  --border-soft: #2a2520;
  --accent: #e8610a;
  --accent-dim: #8c3a06;
  --text-pri: #f0ede8;
  --text-mut: #9a9288;
  --text-dim: #62584f;
  --good: #4caf82;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top right, rgba(232, 97, 10, 0.16), transparent 26rem),
    radial-gradient(circle at bottom left, rgba(58, 155, 213, 0.08), transparent 24rem),
    linear-gradient(180deg, #0f0f0f 0%, #15100c 100%);
  color: var(--text-pri);
}

body {
  font-family: "IBM Plex Mono", monospace;
}

button,
input,
select {
  font: inherit;
}

.page-shell {
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 2rem;
}

.layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(320px, 360px) minmax(0, 1fr);
}

.results {
  display: grid;
  gap: 1rem;
}

.card {
  background: linear-gradient(180deg, rgba(26, 20, 16, 0.98), rgba(21, 17, 13, 0.98));
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 1.15rem;
}

.hero {
  margin-bottom: 1rem;
  padding: 1.4rem 1.2rem 1.3rem;
}

.hero h1,
.section-head h2 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  text-transform: uppercase;
}

.hero-copy {
  color: var(--text-mut);
  line-height: 1.7;
  max-width: 58rem;
  margin: 0.9rem 0 0;
}

.eyebrow {
  margin: 0 0 0.55rem;
  color: var(--accent);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-head {
  margin-bottom: 1rem;
}

.controls {
  height: fit-content;
}

.control-label,
.grid-head,
.payoff-label,
.mini-note {
  color: var(--text-mut);
  font-size: 0.78rem;
}

.control-input {
  width: 100%;
  background: var(--bg-alt);
  color: var(--text-pri);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 0.82rem 0.9rem;
}

.control-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232, 97, 10, 0.14);
}

.grid-head {
  display: flex;
  justify-content: space-between;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 1rem 0 0.7rem;
}

.input-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.payoff-card {
  display: grid;
  gap: 0.55rem;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
}

.payoff-pair {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.button-row {
  display: flex;
  gap: 0.7rem;
  margin-top: 1rem;
}

.primary-button,
.ghost-button {
  border-radius: 12px;
  padding: 0.9rem 1rem;
  cursor: pointer;
}

.primary-button {
  flex: 1 1 auto;
  background: var(--accent);
  color: white;
  border: none;
}

.primary-button:hover {
  background: var(--accent-dim);
}

.ghost-button {
  background: transparent;
  color: var(--text-mut);
  border: 1px solid var(--border-strong);
}

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

.mini-note {
  margin-top: 0.85rem;
  line-height: 1.6;
}

.matrix-wrap {
  overflow-x: auto;
}

.matrix-table,
.properties-table {
  width: 100%;
  border-collapse: collapse;
}

.matrix-table th,
.properties-table th {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.015);
  border-bottom: 1px solid var(--border-strong);
  padding: 0.85rem;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

.matrix-cell,
.properties-table td {
  border-bottom: 1px solid var(--border-soft);
  padding: 0.9rem 0.85rem;
  vertical-align: top;
}

.matrix-cell {
  width: 50%;
  background: rgba(255, 255, 255, 0.015);
}

.matrix-cell.is-ne {
  background: rgba(232, 97, 10, 0.1);
  box-shadow: inset 0 0 0 1px rgba(232, 97, 10, 0.38);
}

.cell-coord,
.cell-tag {
  color: var(--text-dim);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.cell-payoff {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.35rem;
  margin: 0.3rem 0;
}

.cell-tag {
  color: var(--accent);
  min-height: 1rem;
}

.summary-card {
  display: grid;
  gap: 0.45rem;
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.015);
}

.summary-line {
  color: var(--text-mut);
  line-height: 1.6;
}

.summary-line strong {
  color: var(--text-pri);
}

.game-type-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 0.5rem 0.85rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.game-type-description {
  color: var(--text-mut);
  line-height: 1.75;
  margin: 1rem 0 1.2rem;
}

.table-wrap {
  overflow-x: auto;
}

.properties-table td:nth-child(2) {
  color: var(--text-pri);
  white-space: nowrap;
}

.properties-table td:nth-child(3) {
  color: var(--text-dim);
}

.bool-yes {
  color: var(--good);
  font-weight: 700;
}

.bool-no {
  color: var(--text-dim);
  font-weight: 700;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .page-shell {
    width: min(100% - 1rem, 1200px);
  }
}

@media (max-width: 560px) {
  .input-grid {
    grid-template-columns: 1fr;
  }

  .button-row {
    flex-direction: column;
  }

  .cell-payoff {
    font-size: 1.1rem;
  }
}