/* nes-debugger.css: styles for R-Z5.5-SPK101-WK6-NES-DEBUGGER-2026-05-16.
 *
 * Houses the .va-cog-nes-debugger-* token namespace used by the SPK-101
 * wk-6 4-panel NES debugger surface (CPU state + memory page + PPU state
 * + controls/disassembly). Lives in a separate file (NOT portal.css) per
 * the now-quadruple-vouched scoped-CSS-file 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). portal.css stays the
 * typography + shared-layout file; round-specific feature CSS ships
 * standalone and is `<link>`-imported from the markdown surface that
 * uses it. render.py copy_theme() auto-discovers any *.css in
 * courses/_pipeline/theme/.
 *
 * Mobile-first per Z5.1 L1: every interactive surface is exercised on
 * BOTH Pixel 5 (chromium) AND iPhone 13 (WebKit) in the round's mobile
 * spec, so the breakpoints below assume both engines.
 *
 * Tap-target floors:
 *   - control buttons (Step / Run / Pause / Reset / Add breakpoint /
 *     register cells) are PRIMARY nav affordances; 44x44 minimum per
 *     WCAG 2.5.5.
 *   - flag-bit cells in the P register row are a DENSE data grid (8
 *     bits in a single 320px-wide row at mobile); 32x32 minimum per
 *     the WCAG 2.5.5 essential-density exception (same exception Z5.2
 *     applied to hex viewer byte cells). Tap-to-effect is verified
 *     directly in the spec; pixel-size is the proxy.
 *
 * Panel stack order on narrow viewports (<=820px): A (CPU state) ->
 * D (controls + disassembly) -> B (memory) -> C (PPU) -- controls
 * surface above state-density for fat-finger reachability, per L1.
 *
 * License: (c) 2026 Virtus Cyber Academy.
 */

/* ============================================================
 * Top-level debugger wrapper.
 * ============================================================ */
.va-cog-nes-debugger-root {
  display: block;
  margin: 1.5rem 0 2rem 0;
  padding: 1rem;
  background: var(--bg-card, #111);
  border: 1px solid var(--border, #333);
  border-radius: 6px;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.92rem;
  color: var(--fg, #e2e8f0);
}

.va-cog-nes-debugger-title {
  margin: 0 0 0.6rem 0;
  color: var(--gold, #fbbf24);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.va-cog-nes-debugger-help {
  margin: 0 0 0.8rem 0;
  color: var(--fg-muted, #94a3b8);
  font-size: 0.85rem;
  line-height: 1.45;
}

/* ============================================================
 * 4-panel grid stage.
 * Wide layout: 2x2 grid (A B / D C).
 * Narrow layout: stacked column A -> D -> B -> C.
 * ============================================================ */
.va-cog-nes-debugger-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto auto auto auto auto;
  grid-template-areas:
    "panel-a panel-b"
    "panel-d panel-c"
    "panel-e panel-e"
    "panel-f panel-f"
    "panel-g panel-g";
  gap: 1rem;
  align-items: start;
}

.va-cog-nes-debugger-panel {
  min-width: 0;
  padding: 0.6rem;
  background: rgba(74, 222, 128, 0.04);
  border: 1px dashed rgba(74, 222, 128, 0.35);
  border-radius: 4px;
}

.va-cog-nes-debugger-panel[data-panel-key="a"] { grid-area: panel-a; }
.va-cog-nes-debugger-panel[data-panel-key="b"] { grid-area: panel-b; }
.va-cog-nes-debugger-panel[data-panel-key="c"] { grid-area: panel-c; }
.va-cog-nes-debugger-panel[data-panel-key="d"] { grid-area: panel-d; }
.va-cog-nes-debugger-panel[data-panel-key="e"] { grid-area: panel-e; }
.va-cog-nes-debugger-panel[data-panel-key="f"] { grid-area: panel-f; }
.va-cog-nes-debugger-panel[data-panel-key="g"] { grid-area: panel-g; }

.va-cog-nes-debugger-panel-head {
  margin: 0 0 0.4rem 0;
  color: var(--gold, #fbbf24);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.va-cog-nes-debugger-panel-help {
  margin: 0 0 0.5rem 0;
  color: var(--fg-muted, #94a3b8);
  font-size: 0.82rem;
  line-height: 1.45;
}

/* ============================================================
 * Panel A: CPU state (VaCpuStateRenderer mount).
 * ============================================================ */
.va-cog-nes-debugger-cpu-state {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.va-cog-nes-debugger-cpu-register-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.4rem;
}

.va-cog-nes-debugger-cpu-register-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0.35rem 0.4rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  color: var(--fg, #e2e8f0);
  cursor: pointer;
  font-family: var(--mono, ui-monospace, monospace);
  outline-offset: 2px;
}

.va-cog-nes-debugger-cpu-register-cell:hover {
  border-color: var(--gold, #fbbf24);
}

.va-cog-nes-debugger-cpu-register-cell:focus-visible {
  outline: 2px solid var(--gold, #fbbf24);
}

.va-cog-nes-debugger-cpu-register-label {
  display: block;
  margin: 0 0 0.15rem 0;
  color: var(--gold, #fbbf24);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.va-cog-nes-debugger-cpu-register-value {
  display: block;
  color: var(--fg, #e2e8f0);
  font-size: 0.92rem;
  font-weight: 600;
}

/* Flag row: 8 small cells in one line; first cell is the "P bits:" head label. */
.va-cog-nes-debugger-cpu-flag-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
}

.va-cog-nes-debugger-cpu-flag-row-head {
  color: var(--fg-muted, #94a3b8);
  font-size: 0.78rem;
  font-weight: 600;
  margin-right: 0.2rem;
}

.va-cog-nes-debugger-cpu-flag-cell {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  min-height: 32px;
  padding: 0.15rem 0.25rem;
  border: 1px solid var(--border, #333);
  border-radius: 3px;
  font-family: var(--mono, ui-monospace, monospace);
  background: rgba(74, 222, 128, 0.03);
}

.va-cog-nes-debugger-cpu-flag-cell[data-flag-state="1"] {
  background: rgba(251, 191, 36, 0.18);
  border-color: var(--gold, #fbbf24);
}

.va-cog-nes-debugger-cpu-flag-label {
  display: block;
  color: var(--gold, #fbbf24);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.va-cog-nes-debugger-cpu-flag-value {
  display: block;
  color: var(--fg, #e2e8f0);
  font-size: 0.8rem;
  font-weight: 600;
}

.va-cog-nes-debugger-cpu-current-instruction {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.45rem 0.5rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
}

.va-cog-nes-debugger-cpu-current-instruction-head {
  color: var(--fg-muted, #94a3b8);
  font-size: 0.78rem;
  font-weight: 600;
}

.va-cog-nes-debugger-cpu-instruction-mnemonic {
  color: var(--gold, #fbbf24);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.va-cog-nes-debugger-cpu-instruction-operand {
  color: var(--fg, #e2e8f0);
  font-size: 0.9rem;
}

.va-cog-nes-debugger-cpu-instruction-bytes {
  color: var(--fg-muted, #94a3b8);
  font-size: 0.78rem;
  margin-left: 0.2rem;
}

/* ============================================================
 * Panel B: memory page viewer (3 sub-views).
 * Each sub-view embeds a tiny page-readout: 256 bytes in a 16x16 grid.
 * ============================================================ */
.va-cog-nes-debugger-mem-pages {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.va-cog-nes-debugger-mem-page {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.va-cog-nes-debugger-mem-page-head {
  margin: 0;
  color: var(--gold, #fbbf24);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.va-cog-nes-debugger-mem-page-grid {
  display: grid;
  grid-template-columns: repeat(16, minmax(0, 1fr));
  gap: 1px;
  padding: 0.4rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  font-family: var(--mono, ui-monospace, monospace);
}

.va-cog-nes-debugger-mem-byte {
  display: block;
  padding: 0.15rem 0.2rem;
  text-align: center;
  color: var(--fg, #e2e8f0);
  font-size: 0.72rem;
  background: transparent;
  border-radius: 2px;
}

.va-cog-nes-debugger-mem-byte[data-byte-value="0"] {
  color: var(--fg-muted, #94a3b8);
  opacity: 0.55;
}

.va-cog-nes-debugger-mem-byte[data-is-pc="true"] {
  background: var(--gold, #fbbf24);
  color: var(--bg-card-deep, #0a0a0a);
  font-weight: 700;
}

/* ============================================================
 * Panel C: PPU state (palette swatches + nametable preview).
 * ============================================================ */
.va-cog-nes-debugger-ppu {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.va-cog-nes-debugger-ppu-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: baseline;
  font-size: 0.82rem;
}

.va-cog-nes-debugger-ppu-readout-label {
  color: var(--fg-muted, #94a3b8);
  font-weight: 600;
  margin-right: 0.2rem;
}

.va-cog-nes-debugger-ppu-readout-value {
  color: var(--gold, #fbbf24);
  font-weight: 600;
}

.va-cog-nes-debugger-ppu-palette-block {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.va-cog-nes-debugger-ppu-palette-head {
  margin: 0;
  color: var(--gold, #fbbf24);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.va-cog-nes-debugger-ppu-palette-row {
  display: grid;
  grid-template-columns: repeat(16, minmax(0, 1fr));
  gap: 2px;
}

.va-cog-nes-debugger-ppu-palette-swatch {
  display: block;
  min-width: 16px;
  min-height: 22px;
  border: 1px solid var(--border, #333);
  border-radius: 2px;
  background: #000;
}

.va-cog-nes-debugger-ppu-nametable-mount {
  display: block;
  overflow: auto;
  padding: 0.3rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
}

/* ============================================================
 * Panel D: controls + disassembly side-pane.
 * ============================================================ */
.va-cog-nes-debugger-controls {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.va-cog-nes-debugger-control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.va-cog-nes-debugger-control-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0.4rem 0.8rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  color: var(--fg, #e2e8f0);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  outline-offset: 2px;
}

.va-cog-nes-debugger-control-btn:hover {
  border-color: var(--gold, #fbbf24);
}

.va-cog-nes-debugger-control-btn:focus-visible {
  outline: 2px solid var(--gold, #fbbf24);
}

.va-cog-nes-debugger-control-btn[data-active="true"] {
  background: var(--gold, #fbbf24);
  color: var(--bg-card-deep, #0a0a0a);
}

.va-cog-nes-debugger-control-btn[disabled],
.va-cog-nes-debugger-control-btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
}

.va-cog-nes-debugger-breakpoint-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.va-cog-nes-debugger-breakpoint-input {
  min-width: 8em;
  padding: 0.4rem 0.5rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  color: var(--fg, #e2e8f0);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.88rem;
}

.va-cog-nes-debugger-breakpoint-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.va-cog-nes-debugger-breakpoint-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid var(--gold, #fbbf24);
  border-radius: 3px;
  color: var(--gold, #fbbf24);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.82rem;
}

.va-cog-nes-debugger-breakpoint-chip-remove {
  display: inline-block;
  margin-left: 0.2rem;
  padding: 0;
  background: transparent;
  border: none;
  color: var(--gold, #fbbf24);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.92rem;
  cursor: pointer;
  line-height: 1;
}

/* R7: watchpoint UI (memory address-range monitor). Visually distinct
 * from breakpoints (blue accent vs gold) so students can read which
 * surface is firing at a glance. */
.va-cog-nes-debugger-watchpoint-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.3rem;
  padding-top: 0.4rem;
  border-top: 1px dashed var(--border, #333);
}
.va-cog-nes-debugger-watchpoint-input {
  min-width: 12em;
  padding: 0.4rem 0.5rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  color: var(--fg, #e2e8f0);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.88rem;
}
.va-cog-nes-debugger-watchpoint-label-input {
  min-width: 9em;
}
.va-cog-nes-debugger-watchpoint-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.va-cog-nes-debugger-watchpoint-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  background: rgba(96, 165, 250, 0.12);
  border: 1px solid #60a5fa;
  border-radius: 3px;
  color: #60a5fa;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.82rem;
}
.va-cog-nes-debugger-watchpoint-chip-remove {
  display: inline-block;
  margin-left: 0.2rem;
  padding: 0;
  background: transparent;
  border: none;
  color: #60a5fa;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.92rem;
  cursor: pointer;
  line-height: 1;
}

/* R7: control-row buttons for Step Over + Step Out semantically distinct
 * from Step (which keeps the default style) — slight tinted variant. */
.va-cog-nes-debugger-controls [data-control-key="step-over"],
.va-cog-nes-debugger-controls [data-control-key="step-out"] {
  border-color: rgba(96, 165, 250, 0.55);
  color: #60a5fa;
}
.va-cog-nes-debugger-controls [data-control-key="step-over"]:hover,
.va-cog-nes-debugger-controls [data-control-key="step-out"]:hover {
  background: rgba(96, 165, 250, 0.1);
}

.va-cog-nes-debugger-status {
  padding: 0.35rem 0.5rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  color: var(--fg, #e2e8f0);
  font-size: 0.82rem;
  min-height: 1.4em;
}

.va-cog-nes-debugger-status[data-status-kind="error"] {
  color: #f87171;
  border-color: #f87171;
}

.va-cog-nes-debugger-status[data-status-kind="breakpoint"] {
  color: var(--gold, #fbbf24);
  border-color: var(--gold, #fbbf24);
}

/* Disassembly side-pane: ~16 instructions with control-flow arrow markers. */
.va-cog-nes-debugger-disasm {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0.4rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  max-height: 260px;
  overflow: auto;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.8rem;
}

.va-cog-nes-debugger-disasm-line {
  display: grid;
  grid-template-columns: 4em 1fr 2.5em;
  gap: 0.5rem;
  padding: 0.18rem 0.35rem;
  border-radius: 2px;
}

.va-cog-nes-debugger-disasm-line[data-is-pc="true"] {
  background: rgba(251, 191, 36, 0.2);
  font-weight: 700;
}

.va-cog-nes-debugger-disasm-line[data-is-branch-target="true"] {
  border-left: 2px solid var(--gold, #fbbf24);
  padding-left: 0.25rem;
}

.va-cog-nes-debugger-disasm-line[data-is-data="true"] {
  color: var(--fg-muted, #94a3b8);
}

.va-cog-nes-debugger-disasm-addr {
  color: var(--fg-muted, #94a3b8);
}

.va-cog-nes-debugger-disasm-text {
  color: var(--fg, #e2e8f0);
}

.va-cog-nes-debugger-disasm-arrow {
  color: var(--gold, #fbbf24);
  font-weight: 700;
  text-align: right;
}

.va-cog-nes-debugger-disasm-empty {
  padding: 0.4rem;
  color: var(--fg-muted, #94a3b8);
  font-style: italic;
}

/* ============================================================
 * ROM toggle bar (above stage).
 * Mirrors the .va-cog-hex-rom-toggle pattern from Z5.2.X.
 * ============================================================ */
.va-cog-nes-debugger-rom-toggle {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 0.7rem 0;
  padding: 0.4rem 0.5rem;
  background: var(--bg-card-deep, #0a0a0a);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
}

.va-cog-nes-debugger-rom-toggle-label {
  color: var(--fg-muted, #94a3b8);
  font-size: 0.82rem;
  font-weight: 600;
  margin-right: 0.2rem;
}

.va-cog-nes-debugger-rom-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0.4rem 0.7rem;
  background: var(--bg-card, #111);
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  color: var(--fg, #e2e8f0);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.85rem;
  cursor: pointer;
}

.va-cog-nes-debugger-rom-toggle-btn-active {
  background: var(--gold, #fbbf24);
  color: var(--bg-card-deep, #0a0a0a);
  border-color: var(--gold, #fbbf24);
  font-weight: 700;
}

/* ============================================================
 * Scrollytelling scene styling. Mirrors Z5.2 scene pattern.
 * ============================================================ */
.va-cog-nes-debugger-scene {
  margin: 1rem 0;
  padding: 0.7rem 0.9rem;
  border-left: 3px solid var(--border, #333);
  transition: opacity 250ms ease, border-color 250ms ease;
}

.va-cog-nes-debugger-scene[data-active="true"] {
  opacity: 1;
  border-left-color: var(--gold, #fbbf24);
}

.va-cog-nes-debugger-scene-tag {
  display: inline-block;
  margin: 0 0 0.3rem 0;
  color: var(--gold, #fbbf24);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ============================================================
 * Narrow viewport (<=820px): stack panels A -> D -> B -> C.
 * Controls (D) above state-density (B + C) for fat-finger reachability.
 * ============================================================ */
@media (max-width: 820px) {
  .va-cog-nes-debugger-stage {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto auto auto auto auto;
    grid-template-areas:
      "panel-a"
      "panel-d"
      "panel-b"
      "panel-c"
      "panel-e"
      "panel-f"
      "panel-g";
  }
  .va-cog-nes-debugger-cpu-register-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .va-cog-nes-debugger-mem-page-grid {
    font-size: 0.66rem;
  }
  .va-cog-nes-debugger-disasm {
    max-height: 220px;
    font-size: 0.74rem;
  }
}

/* Mobile breakpoint: tighten the flag row + register grid spacing so
 * 360-390px viewports fit cleanly. Keep 44x44 floor on control buttons. */
@media (max-width: 480px) {
  .va-cog-nes-debugger-root {
    padding: 0.6rem;
    font-size: 0.86rem;
  }
  .va-cog-nes-debugger-cpu-register-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.3rem;
  }
  .va-cog-nes-debugger-cpu-flag-cell {
    min-width: 28px;
    min-height: 32px;
    padding: 0.1rem 0.15rem;
  }
  .va-cog-nes-debugger-mem-page-grid {
    font-size: 0.6rem;
    gap: 0;
  }
  .va-cog-nes-debugger-mem-byte {
    padding: 0.08rem 0.05rem;
  }
  .va-cog-nes-debugger-ppu-palette-swatch {
    min-width: 12px;
    min-height: 18px;
  }
}