/* Frequency Matching Game — tool-specific overrides only.
   Shared tokens/components live in design-system.css. OUTPUT ONLY (no microphone). */

/* Honest caveat note (matches the .X-warn-note pattern used across the site) */
.fmg-warn-note {
  max-width: 760px;
  margin: var(--space-md) auto 0;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius-sm);
  background: rgba(0, 255, 65, 0.04);
  color: var(--color-text-dim);
  font-size: 0.9rem;
  line-height: 1.55;
  text-align: left;
}
.fmg-warn-note strong { color: var(--color-text); }

/* Game board card */
.fmg-board {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* HUD: moves / pairs / time */
.fmg-hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}
.fmg-stat {
  text-align: center;
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(0, 255, 65, 0.03);
}
.fmg-stat__label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-dim);
}
.fmg-stat__val {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 5vw, 2.1rem);
  line-height: 1;
  color: var(--color-secondary);
  font-variant-numeric: tabular-nums;
}

/* Status / feedback line */
.fmg-status {
  text-align: center;
  min-height: 1.5em;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.4;
}
.fmg-status--win { color: var(--color-primary); border-color: var(--color-primary); }
.fmg-status--lose { color: #ffb43c; border-color: rgba(255, 180, 60, 0.5); }
.fmg-status--go { color: var(--color-secondary); border-color: var(--color-secondary); }

/* Card grid — column count adapts to card count */
.fmg-grid {
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: repeat(4, 1fr);
}
.fmg-grid[data-count="8"] { grid-template-columns: repeat(4, 1fr); }
.fmg-grid[data-count="12"] { grid-template-columns: repeat(4, 1fr); }
.fmg-grid[data-count="16"] { grid-template-columns: repeat(4, 1fr); }

/* A card. Default = face down (the "?" back). Flipping up swaps to the tone face. */
.fmg-card {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 84px;
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  cursor: pointer;
  transition: transform 0.1s ease, border-color 0.14s ease, background 0.14s ease, box-shadow 0.14s ease, color 0.14s ease;
}
.fmg-card:hover:not(:disabled):not(.fmg-card--up) {
  border-color: var(--color-primary-dim);
  color: var(--color-text);
  transform: translateY(-2px);
}
.fmg-card:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(0, 255, 65, 0.25);
}
.fmg-card:disabled { cursor: default; }

.fmg-card__back {
  font-size: 1.8rem;
  line-height: 1;
  color: var(--color-primary-dim);
  opacity: 0.7;
}
.fmg-card__front {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.fmg-card__note { font-size: 1.05rem; color: var(--color-text); line-height: 1; }
.fmg-card__hz { font-size: 0.68rem; color: var(--color-text-dim); letter-spacing: 0.02em; }

/* Face-up: hide the back, show the tone face */
.fmg-card--up {
  border-color: var(--color-secondary);
  background: rgba(0, 229, 255, 0.10);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
  transform: translateY(-2px);
}
.fmg-card--up .fmg-card__back { display: none; }
.fmg-card--up .fmg-card__front { display: flex; }
.fmg-card--up .fmg-card__note { color: var(--color-secondary); }

/* Matched pairs lock open in green */
.fmg-card--matched {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.14);
  box-shadow: var(--glow-sm);
  transform: none;
}
.fmg-card--matched .fmg-card__note { color: var(--color-primary); }
.fmg-card--matched .fmg-card__hz { color: var(--color-primary-dim); }

/* Non-interactive preview cards before a game starts */
.fmg-card--placeholder {
  cursor: default;
  opacity: 0.55;
}
.fmg-card--placeholder:hover { transform: none; border-color: var(--color-border); color: var(--color-text-dim); }

/* Controls row */
.fmg-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}
.fmg-controls .btn { flex: 1 1 auto; min-width: 150px; }

/* Options (difficulty + size + volume) */
.fmg-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.fmg-option { flex: 1 1 220px; }
.fmg-option__label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-dim);
}

/* Segmented toggle */
.fmg-seg {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 4px;
}
.fmg-seg__btn {
  padding: 9px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.12s ease, color 0.12s ease, background 0.12s ease;
}
.fmg-seg__btn:hover { color: var(--color-text); }
.fmg-seg__btn:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(0, 255, 65, 0.22);
}
.fmg-seg__btn--on {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(0, 255, 65, 0.08);
}

.fmg-range { width: 100%; margin-top: 4px; accent-color: var(--color-primary); }
.fmg-volval { color: var(--color-secondary); font-family: var(--font-mono); }

.fmg-hint {
  font-size: 0.82rem;
  color: var(--color-text-dim);
  line-height: 1.5;
  text-align: center;
  margin: 0;
}

.fmg-best {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: 8px 12px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-dim);
}
.fmg-best__strong { color: var(--color-primary); }

/* Related tools grid (not defined globally) */
.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  text-align: left;
}
.related-tool-card {
  display: block;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.related-tool-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--glow-sm);
}
.related-tool-card__title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-primary);
  margin-bottom: 4px;
}
.related-tool-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  line-height: 1.45;
}

@media (max-width: 720px) {
  .fmg-board { padding: var(--space-md); }
  .fmg-grid,
  .fmg-grid[data-count="8"],
  .fmg-grid[data-count="12"],
  .fmg-grid[data-count="16"] { grid-template-columns: repeat(3, 1fr); }
  .fmg-card { min-height: 72px; }
  .related-tools-grid { grid-template-columns: 1fr; }
  .fmg-controls .btn { min-width: 120px; }
}
@media (max-width: 420px) {
  .fmg-grid,
  .fmg-grid[data-count="8"],
  .fmg-grid[data-count="12"],
  .fmg-grid[data-count="16"] { grid-template-columns: repeat(2, 1fr); }
}