/* ============================================================
   LottoIQ — Proof (Randomness-in-Action Simulator)
   Layout for the /proof/ hub page only: game/draw-count pickers,
   Simulate button + progress readout, and the side-by-side
   simulated/real comparison grid. New file, following the
   one-file-per-feature-area convention (heatmap.css, generator.css,
   gates.css). Uses tokens.css variables only — no hardcoded colors.
   ============================================================ */

/* ── Page header ── */
.proof-header {
  max-width: 760px;
  margin: 0 auto 32px;
  text-align: center;
}

.proof-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.proof-title span { color: var(--gold); }

.proof-sub {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Controls card ── */
.proof-controls {
  background: var(--navy-2);
  border: 1px solid var(--navy-4);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 24px;
}

.proof-control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.proof-control-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Game picker — button group */
.proof-game-picker,
.proof-count-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  background: var(--navy-3);
  border: 1px solid var(--navy-4);
  border-radius: var(--radius-lg);
  padding: 5px;
  width: fit-content;
}

.proof-game-btn,
.proof-count-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.proof-game-btn:hover,
.proof-count-btn:hover {
  color: var(--text);
  background: var(--navy-4);
}

.proof-game-btn.active,
.proof-count-btn.active {
  background: var(--gold);
  color: var(--navy);
  font-weight: 600;
}

/* Actions — Simulate button + compare toggle */
.proof-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-left: auto;
}

.proof-compare-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.proof-compare-toggle input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--gold);
  cursor: pointer;
}

/* ── Progress readout ── */
.proof-progress {
  flex-basis: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
}

.proof-progress-bar-wrap {
  flex: 1;
  height: 6px;
  background: var(--navy-4);
  border-radius: 3px;
  overflow: hidden;
}

.proof-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--gold);
  border-radius: 3px;
  transition: width 0.1s linear;
}

.proof-progress-text {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Results / comparison grid ── */
.proof-results {
  margin-bottom: 32px;
}

.proof-compare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

/* Two columns once the "Compare against real history" toggle is on —
   .proof-compare-active is added/removed by simulator.js's inline
   controller, not written directly here, so it stays in sync with
   #realCol's visibility without relying on a fragile attribute match. */
.proof-compare-grid.proof-compare-active {
  grid-template-columns: 1fr 1fr;
}

.proof-col {
  min-width: 0; /* allow heatmap grid to shrink inside the column */
}

.proof-col-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.proof-col-loading {
  opacity: 0.5;
  pointer-events: none;
}

.proof-subhead {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  margin: 24px 0 10px;
}

/* ── Disclaimer ── */
.proof-disclaimer {
  max-width: 760px;
  margin: 0 auto 32px;
  text-align: center;
}

/* ── Responsive — same breakpoint conventions as responsive.css ── */
@media (max-width: 720px) {
  .proof-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
  }

  .proof-actions {
    margin-left: 0;
    justify-content: space-between;
  }

  .proof-compare-grid,
  .proof-compare-grid.proof-compare-active {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .proof-title {
    font-size: 24px;
  }

  .proof-game-picker,
  .proof-count-picker {
    width: 100%;
  }

  .proof-game-btn,
  .proof-count-btn {
    flex: 1;
    text-align: center;
  }
}