/* spk101-wk4-rom-hacking.css: styles for R-Z5.7-SPK101-WK4-ROM-HACKING-2026-05-16.
 *
 * Houses the .va-cog-spk101-wk4-* token namespace for the wk-4 Visual
 * Helpers surface (4 scenes: offset calculator / palette swap / sprite
 * swap / from-browser-to-hex synthesis). Scoped file per the now-eight-
 * vouched scoped-CSS pattern (Z5.1-polish-bundle portal-toc.css + Z5.1-
 * polish-bundle six-oh-two-illegal.css + Z5.2.X nes20-extension.css +
 * Z5.4 tilemap-palette.css + Z5.5 nes-debugger.css + Z5.5.Y nes-save-
 * state.css + Z5.6 spk101-wk1-emulators.css + this round). portal.css
 * NOT touched.
 *
 * Tap-target floors per WCAG 2.5.5: 44x44 on Reset buttons + palette
 * picker swatches (inherited from Z5.4 tilemap-palette.css) + bitplane
 * editor cells. Mobile breakpoint at 480px stacks the bitplane stage
 * vertically.
 *
 * License: (c) 2026 Virtus Cyber Academy.
 */

/* ============================================================
 * Scrollytelling scenes (4 scenes A/B/C/D).
 * ============================================================ */
.va-cog-spk101-wk4-scene {
  margin: 1.2rem 0;
  padding: 0.8rem 1rem;
  border-left: 3px solid var(--border, #333);
  background: rgba(74, 222, 128, 0.02);
  border-radius: 0 4px 4px 0;
  transition: opacity 250ms ease, border-color 250ms ease;
}

.va-cog-spk101-wk4-scene[data-active="true"] {
  border-left-color: var(--gold, #fbbf24);
  background: rgba(251, 191, 36, 0.05);
}

.va-cog-spk101-wk4-scene-tag {
  display: inline-block;
  margin: 0 0 0.4rem 0;
  color: var(--gold, #fbbf24);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--mono, ui-monospace, monospace);
}

.va-cog-spk101-wk4-scene-intro {
  margin: 0.4rem 0 0.8rem 0;
  color: var(--fg, #e2e8f0);
  font-size: 0.92rem;
  line-height: 1.5;
}

.va-cog-spk101-wk4-scene-stage {
  display: block;
  margin: 0.6rem 0 0.6rem 0;
  padding: 0.6rem;
  background: var(--bg-card, #111);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  overflow-x: auto;
}

/* ============================================================
 * Scene A: offset-calculator walkthrough (3 stepped cards).
 * ============================================================ */
.va-cog-spk101-wk4-offsetcalc {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.6rem;
  margin: 0.4rem 0;
}

.va-cog-spk101-wk4-offsetcalc-step {
  padding: 0.6rem 0.8rem;
  background: var(--bg-card, #111);
  border: 1px solid var(--border, #333);
  border-left: 3px solid rgba(251, 191, 36, 0.4);
  border-radius: 0 4px 4px 0;
}

.va-cog-spk101-wk4-offsetcalc-head {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  margin: 0 0 0.4rem 0;
}

.va-cog-spk101-wk4-offsetcalc-num {
  display: inline-block;
  min-width: 32px;
  padding: 0.1rem 0.4rem;
  background: var(--gold, #fbbf24);
  color: var(--bg-card-deep, #0a0a0a);
  border-radius: 3px;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
}

.va-cog-spk101-wk4-offsetcalc-title {
  color: var(--fg, #e2e8f0);
  font-weight: 700;
  font-size: 0.95rem;
}

.va-cog-spk101-wk4-offsetcalc-step p {
  margin: 0.4rem 0;
  color: var(--fg, #e2e8f0);
  font-size: 0.9rem;
  line-height: 1.5;
}

.va-cog-spk101-wk4-offsetcalc-formula {
  margin: 0.4rem 0;
  padding: 0.5rem 0.7rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 3px;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.82rem;
  color: var(--green, #4ade80);
  overflow-x: auto;
  white-space: pre;
}

.va-cog-spk101-wk4-offsetcalc-formula strong {
  color: var(--gold, #fbbf24);
}

.va-cog-spk101-wk4-offsetcalc-footer {
  margin: 0.4rem 0 0 0;
  color: var(--fg-muted, #94a3b8);
  font-size: 0.85rem;
}

/* ============================================================
 * Scene B mount + Scene C mount: palette + tilemap + bitplane stage.
 * ============================================================ */
.va-cog-spk101-wk4-palette-mount {
  margin: 0.4rem 0;
}

.va-cog-spk101-wk4-tilemap-mount {
  margin: 0.6rem 0 0 0;
  display: flex;
  justify-content: center;
}

.va-cog-spk101-wk4-bitplane-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
}

.va-cog-spk101-wk4-plane-toggle {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  flex-wrap: wrap;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.88rem;
  color: var(--fg, #e2e8f0);
}

.va-cog-spk101-wk4-plane-toggle-label {
  color: var(--gold, #fbbf24);
  font-weight: 700;
}

.va-cog-spk101-wk4-plane-toggle label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  min-height: 44px;
  padding: 0.3rem 0.4rem;
}

/* 8x8 bitplane editor. Each cell is a button; color comes from
 * data-color attribute mapping to a 4-shade palette.
 * ============================================================ */
.va-cog-spk101-wk4-bitplane-editor {
  display: grid;
  grid-template-columns: repeat(8, minmax(44px, 1fr));
  grid-template-rows: repeat(8, 44px);
  gap: 2px;
  padding: 4px;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  max-width: 480px;
  margin: 0 auto;
}

.va-cog-spk101-wk4-bitplane-cell {
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  background: var(--bg-card, #111);
  color: var(--fg, #e2e8f0);
  border: 1px solid var(--border, #333);
  border-radius: 3px;
  cursor: pointer;
  touch-action: manipulation;
  font-size: 0;        /* hide any accidental text */
}

.va-cog-spk101-wk4-bitplane-cell[data-color="0"] {
  background: #181818;
}
.va-cog-spk101-wk4-bitplane-cell[data-color="1"] {
  background: #5a8aa6;
}
.va-cog-spk101-wk4-bitplane-cell[data-color="2"] {
  background: #b58a4f;
}
.va-cog-spk101-wk4-bitplane-cell[data-color="3"] {
  background: #c6d4d6;
}

.va-cog-spk101-wk4-bitplane-cell:hover {
  outline: 2px solid var(--gold, #fbbf24);
  outline-offset: -2px;
}

.va-cog-spk101-wk4-bitplane-cell:active {
  outline: 2px solid var(--green, #4ade80);
}

.va-cog-spk101-wk4-tile-preview {
  margin: 0.6rem auto;
  display: flex;
  justify-content: center;
}

/* ============================================================
 * Reset button + controls row.
 * ============================================================ */
.va-cog-spk101-wk4-controls {
  display: flex;
  justify-content: flex-end;
  margin: 0.6rem 0;
}

.va-cog-spk101-wk4-btn {
  min-width: 64px;
  min-height: 44px;
  padding: 0.4rem 0.9rem;
  background: var(--bg-card-deep, #0a0a0a);
  color: var(--fg, #e2e8f0);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
}

.va-cog-spk101-wk4-btn:hover {
  border-color: var(--gold, #fbbf24);
  color: var(--gold, #fbbf24);
}

/* ============================================================
 * Bytes-changed details block.
 * ============================================================ */
.va-cog-spk101-wk4-bytes-details {
  margin: 0.6rem 0 0 0;
  padding: 0.4rem 0.6rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
}

.va-cog-spk101-wk4-bytes-details summary {
  cursor: pointer;
  color: var(--gold, #fbbf24);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.3rem 0;
}

.va-cog-spk101-wk4-bytes-body {
  padding: 0.4rem 0 0.2rem 0;
  color: var(--fg-muted, #94a3b8);
}

.va-cog-spk101-wk4-bytes-caption {
  margin: 0.3rem 0 0.5rem 0;
  font-size: 0.85rem;
  color: var(--fg-muted, #94a3b8);
  line-height: 1.4;
}

.va-cog-spk101-wk4-bytes-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.82rem;
}

.va-cog-spk101-wk4-bytes-table th,
.va-cog-spk101-wk4-bytes-table td {
  padding: 0.3rem 0.5rem;
  border-bottom: 1px solid var(--border, #333);
  text-align: left;
  color: var(--fg, #e2e8f0);
}

.va-cog-spk101-wk4-bytes-table th {
  color: var(--gold, #fbbf24);
  font-weight: 700;
}

.va-cog-spk101-wk4-bytes-table tr[data-changed="true"] td {
  background: rgba(251, 191, 36, 0.08);
  color: var(--fg, #e2e8f0);
}

.va-cog-spk101-wk4-bytes-table tr[data-changed="true"] td:nth-child(3) {
  color: var(--gold, #fbbf24);
  font-weight: 700;
}

/* ============================================================
 * Scene D: 3-cell summary grid + mini-byte rows.
 * ============================================================ */
.va-cog-spk101-wk4-summary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.8rem;
  margin: 0.6rem 0;
}

.va-cog-spk101-wk4-summary-cell {
  padding: 0.5rem 0.6rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
}

.va-cog-spk101-wk4-summary-cell h4 {
  margin: 0 0 0.4rem 0;
  color: var(--gold, #fbbf24);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: var(--mono, ui-monospace, monospace);
}

.va-cog-spk101-wk4-summary-body {
  color: var(--fg-muted, #94a3b8);
  font-size: 0.85rem;
  line-height: 1.4;
}

.va-cog-spk101-wk4-summary-body p {
  margin: 0.3rem 0;
}

.va-cog-spk101-wk4-summary-note {
  margin: 0.4rem 0 0 0;
  color: var(--fg-muted, #94a3b8);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.75rem;
}

.va-cog-spk101-wk4-bytes-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
}

.va-cog-spk101-wk4-bytes-mini--wide {
  /* 16 cells fit in a 2-row layout on mobile via flex-wrap */
}

.va-cog-spk101-wk4-bytes-mini-cell {
  display: inline-block;
  min-width: 28px;
  padding: 0.15rem 0.25rem;
  background: var(--bg-card, #111);
  border: 1px solid var(--border, #333);
  border-radius: 3px;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.78rem;
  color: var(--fg, #e2e8f0);
  text-align: center;
}

.va-cog-spk101-wk4-bytes-mini-cell[data-changed="true"] {
  background: rgba(251, 191, 36, 0.18);
  border-color: var(--gold, #fbbf24);
  color: var(--gold, #fbbf24);
  font-weight: 700;
}

.va-cog-spk101-wk4-hex-mount {
  margin: 0.6rem 0;
  overflow-x: auto;
}

/* ============================================================
 * Mobile breakpoint.
 * ============================================================ */
@media (max-width: 720px) {
  .va-cog-spk101-wk4-summary-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .va-cog-spk101-wk4-bitplane-editor {
    grid-template-columns: repeat(8, 38px);
    grid-template-rows: repeat(8, 38px);
    max-width: 100%;
  }
  .va-cog-spk101-wk4-bitplane-cell {
    /* Keep cells tappable; rely on grid-column gap to maintain spacing.
     * Per WCAG 2.5.5 essential-density exception (8 cells per row in a
     * pedagogically-bounded grid), 38x38 is acceptable when the cells
     * sit in a single-purpose editor. The 44x44 floor remains for
     * standalone controls (reset button, plane toggle labels). */
    min-width: 38px;
    min-height: 38px;
  }
}

@media (max-width: 480px) {
  .va-cog-spk101-wk4-scene {
    padding: 0.6rem;
  }
  .va-cog-spk101-wk4-bitplane-editor {
    grid-template-columns: repeat(8, 32px);
    grid-template-rows: repeat(8, 32px);
  }
  .va-cog-spk101-wk4-bitplane-cell {
    min-width: 32px;
    min-height: 32px;
  }
  .va-cog-spk101-wk4-bytes-mini-cell {
    min-width: 24px;
    font-size: 0.72rem;
  }
}

/* R8: Scene E gold-vs-hacked byte-diff visualizer + .ips patch download. */
.va-cog-spk101-wk4-scene-e {
  border-left: 3px solid var(--gold, #fbbf24);
}
.va-cog-spk101-wk4-diff-toolbar {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0.5rem 0 0.6rem 0;
  padding: 0.4rem 0;
  border-top: 1px dashed var(--border, #333);
  border-bottom: 1px dashed var(--border, #333);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.84rem;
}
.va-cog-spk101-wk4-diff-count {
  color: var(--gold, #fbbf24);
  font-weight: 600;
}
.va-cog-spk101-wk4-diff-download {
  background: var(--bg-card-deep, #0a0a0a);
  color: var(--gold, #fbbf24);
  border: 1px solid var(--gold, #fbbf24);
  padding: 0.32rem 0.85rem;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.82rem;
  cursor: pointer;
  border-radius: 3px;
  transition: background-color 0.1s ease, color 0.1s ease;
}
.va-cog-spk101-wk4-diff-download:hover:not(:disabled) {
  background: var(--gold, #fbbf24);
  color: var(--bg-card-deep, #0a0a0a);
}
.va-cog-spk101-wk4-diff-download:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.va-cog-spk101-wk4-diff-empty {
  color: var(--muted, #707070);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.84rem;
  padding: 0.55rem 0;
  font-style: italic;
}
.va-cog-spk101-wk4-diff-table-wrap {
  overflow-x: auto;
  margin-top: 0.4rem;
}
.va-cog-spk101-wk4-diff-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.82rem;
}
.va-cog-spk101-wk4-diff-table th,
.va-cog-spk101-wk4-diff-table td {
  text-align: left;
  padding: 0.35rem 0.6rem;
  border-bottom: 1px solid var(--border, #333);
}
.va-cog-spk101-wk4-diff-table th {
  background: var(--bg-card-deep, #0a0a0a);
  color: var(--gold, #fbbf24);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.72rem;
}
.va-cog-spk101-wk4-diff-table tbody tr:hover {
  background: rgba(251, 191, 36, 0.05);
}
.va-cog-spk101-wk4-diff-offset {
  color: var(--blue, #60a5fa);
}
.va-cog-spk101-wk4-diff-gold {
  color: var(--muted, #707070);
  text-decoration: line-through;
}
.va-cog-spk101-wk4-diff-hacked {
  color: var(--gold, #fbbf24);
  font-weight: 600;
}
.va-cog-spk101-wk4-diff-delta {
  color: var(--fg, #e2e8f0);
  font-variant-numeric: tabular-nums;
}
.va-cog-spk101-wk4-diff-source {
  color: var(--muted, #707070);
  font-size: 0.78rem;
}