/* ============================================================
   v1.25 page-specific styles
   ROMFS two-MCU diagram, alif bullets, asm side-by-side,
   DTLS comparison, language picker (reuses the v1.26 pattern).
   ============================================================ */

/* ===== ROMFS Demo ===== */
.romfs-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.romfs-stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.romfs-mcu {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}

.romfs-mcu-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.romfs-mcu-svg {
  width: 100%;
  height: 180px;
  display: block;
}

.romfs-flash {
  fill: var(--bg-tertiary);
  stroke: var(--text-muted);
  stroke-width: 1;
  rx: 4;
}
.romfs-flash-romfs {
  stroke: var(--accent-green);
  stroke-width: 2;
  stroke-dasharray: 6 4;
}

.romfs-ram {
  fill: var(--bg-card);
  stroke: var(--accent);
  stroke-width: 1;
  rx: 4;
}

.romfs-region-label {
  fill: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-anchor: middle;
}

.romfs-bytecode {
  fill: var(--accent);
  rx: 3;
  opacity: 0.85;
}

.romfs-ram-used {
  fill: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  text-anchor: middle;
  font-variant-numeric: tabular-nums;
}

.romfs-copy {
  fill: var(--accent-orange);
  rx: 3;
}

.romfs-inplace {
  fill: none;
  stroke: var(--accent-green);
  stroke-width: 2;
  marker-end: url(#romfs-arrow-head);
}
.romfs-inplace-label {
  fill: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}

.romfs-note {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 8px;
}

/* ===== alif bullets ===== */
.alif-bullets {
  list-style: none;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.alif-bullets li {
  padding: 4px 0;
  position: relative;
  padding-left: 20px;
}
.alif-bullets li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: 4px;
  color: var(--accent);
}
.alif-bullets strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* ===== asm_rv32 side-by-side ===== */
.asm-side-by-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 8px;
}
.asm-pane {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.asm-pane:nth-child(2) {
  border-color: var(--accent);
}
.asm-pane-label {
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}
.asm-pre {
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-primary);
}

/* ===== DTLS comparison ===== */
.dtls-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.dtls-pane {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.dtls-pane:nth-child(2) {
  border-color: var(--accent-green);
}
.dtls-pane-label {
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}
.dtls-pane-label strong {
  color: var(--accent-green);
}
.dtls-pre {
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-primary);
}

/* ===== Language Picker (matches v1.26/v1.27 pattern) ===== */
.example-picker-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.example-picker-row label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-weight: 700;
}
.example-picker {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  flex: 1;
  max-width: 420px;
}
.example-picker:focus {
  outline: none;
  border-color: var(--accent);
}

/* ===== MCU spec cards (mirrors the v1.26/v1.27 pattern) ===== */
.mcu-spec-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}
.mcu-spec-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  transition: all 0.2s ease;
}
.mcu-spec-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.mcu-spec-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.mcu-spec-header h3 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.3px;
}
.mcu-spec-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 16px;
  text-align: center;
}
.mcu-spec-strip > div {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.mcu-spec-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 2px;
}
.mcu-spec-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}
.mcu-spec-boards {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .romfs-stage { grid-template-columns: 1fr; }
  .asm-side-by-side { grid-template-columns: 1fr; }
  .dtls-compare { grid-template-columns: 1fr; }
}