:root {
  --pg-bg: #f6f2ea;
  --pg-surface: rgba(255, 255, 255, 0.82);
  --pg-surface-strong: rgba(255, 255, 255, 0.94);
  --pg-border: rgba(36, 49, 58, 0.12);
  --pg-border-strong: rgba(36, 49, 58, 0.2);
  --pg-ink: #1d2a33;
  --pg-muted: #62707a;
  --pg-accent: #0f766e;
  --pg-accent-soft: rgba(15, 118, 110, 0.12);
  --pg-accent-strong: #0a5f59;
  --pg-shadow: 0 18px 50px rgba(29, 42, 51, 0.08);
  --pg-radius: 1.25rem;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(
      circle at top left,
      rgba(15, 118, 110, 0.12),
      transparent 28%
    ),
    linear-gradient(180deg, #faf7f1 0%, var(--pg-bg) 100%);
  color: var(--pg-ink);
  font-family: 'Instrument Sans', 'Segoe UI', sans-serif;
}

code,
pre {
  font-family: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
}

.app-shell {
  display: grid;
  gap: 1.25rem;
  padding-bottom: 4rem;
}

.hero-panel,
.wizard-panel,
.baseline-card,
.policy-card,
.summary-card,
.generator-card,
.output-card,
.empty-panel,
.error-panel {
  border: 1px solid var(--pg-border);
  border-radius: var(--pg-radius);
  background: var(--pg-surface);
  box-shadow: var(--pg-shadow);
  backdrop-filter: blur(14px);
}

.hero-panel {
  padding: 2rem;
}

.hero-panel h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1;
}

.hero-panel p {
  max-width: 34rem;
  margin: 0;
  color: var(--pg-muted);
  font-size: 1rem;
}

.eyebrow,
.wizard-panel__eyebrow {
  display: inline-flex;
  align-items: center;
  margin: 0 0 0.75rem;
  color: var(--pg-accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mode-switcher {
  display: inline-flex;
  gap: 0.5rem;
  width: fit-content;
  padding: 0.35rem;
  border: 1px solid var(--pg-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.mode-pill {
  min-width: 8rem;
  padding: 0.7rem 1rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--pg-muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.mode-pill.is-active {
  background: var(--pg-accent);
  color: #fff;
}

.stacked-section,
.policy-stack,
.stacked-cards,
.advanced-grid,
.output-stack {
  display: grid;
  gap: 1rem;
}

.wizard-steps {
  display: grid;
  gap: 0.75rem;
}

.wizard-step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--pg-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--pg-muted);
  text-align: left;
}

.wizard-step__number {
  display: inline-grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 999px;
  background: rgba(29, 42, 51, 0.08);
  color: var(--pg-ink);
  font-size: 0.82rem;
  font-weight: 700;
}

.wizard-step__label {
  font-size: 0.93rem;
  font-weight: 700;
}

.wizard-step.is-active {
  border-color: rgba(15, 118, 110, 0.3);
  background: rgba(15, 118, 110, 0.12);
  color: var(--pg-ink);
}

.wizard-step.is-active .wizard-step__number,
.wizard-step.is-complete .wizard-step__number {
  background: var(--pg-accent);
  color: #fff;
}

.wizard-step.is-complete {
  color: var(--pg-ink);
}

.wizard-panel {
  padding: 1.35rem;
}

.wizard-panel__intro {
  margin-bottom: 1.2rem;
}

.wizard-panel__intro h2 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  line-height: 1.1;
}

.wizard-panel__intro p:last-child {
  margin: 0;
  color: var(--pg-muted);
}

.baseline-card,
.summary-card,
.policy-card {
  padding: 1.15rem;
}

.baseline-card__header,
.policy-card__top,
.output-card__actions,
.wizard-footer,
.section-heading,
.preview-card__header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.baseline-card__header h3,
.policy-card__title,
.summary-card__count,
.output-card summary h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.baseline-card__header p,
.policy-card__description,
.output-card summary p {
  margin: 0.35rem 0 0;
  color: var(--pg-muted);
  font-size: 0.95rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tag-chip {
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(29, 42, 51, 0.06);
  color: var(--pg-ink);
  font-size: 0.82rem;
  font-weight: 600;
}

.switch-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 2.5rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--pg-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--pg-ink);
  font-size: 0.88rem;
  font-weight: 700;
}

.switch-toggle--large {
  min-height: 3rem;
  padding-inline: 0.95rem;
}

.switch-toggle input {
  width: 2.4rem;
  height: 1.35rem;
  margin: 0;
}

.policy-card.is-disabled {
  opacity: 0.78;
}

.policy-card__content {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(36, 49, 58, 0.08);
}

.policy-card__hint {
  margin-top: 0.9rem;
  color: var(--pg-muted);
  font-size: 0.92rem;
}

.policy-card__details {
  padding-top: 0.25rem;
}

.policy-card__details summary,
.output-card summary {
  cursor: pointer;
  list-style: none;
}

.policy-card__details summary::-webkit-details-marker,
.output-card summary::-webkit-details-marker {
  display: none;
}

.policy-card__details summary {
  color: var(--pg-accent);
  font-size: 0.9rem;
  font-weight: 700;
}

.binary-toggle {
  display: inline-flex;
  padding: 0.25rem;
  border: 1px solid var(--pg-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
}

.binary-toggle__item {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 4.5rem;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  color: var(--pg-muted);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.binary-toggle__item input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.binary-toggle__item.is-active {
  background: var(--pg-accent-soft);
  color: var(--pg-accent);
}

.tiny-label {
  margin-bottom: 0.35rem;
  color: var(--pg-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.field-grid {
  display: grid;
  gap: 0.9rem;
}

.compact-grid {
  gap: 0.8rem;
}

.field-grid__span-2 {
  grid-column: 1 / -1;
}

.code-input {
  min-height: 6rem;
}

.summary-card__count {
  margin-bottom: 0.75rem;
}

.output-card {
  overflow: hidden;
}

.output-card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.1rem;
}

.output-card[open] summary {
  border-bottom: 1px solid rgba(36, 49, 58, 0.08);
}

.output-card__body {
  display: grid;
  gap: 0.9rem;
  padding: 1rem 1.1rem 1.1rem;
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid rgba(15, 118, 110, 0.25);
  border-radius: 999px;
  background: #fff;
  color: var(--pg-accent);
}

.icon-button svg {
  width: 1rem;
  height: 1rem;
  fill: currentColor;
}

.preview-code,
.preview-snippet {
  margin: 0;
  padding: 1rem;
  border-radius: 1rem;
  background: #18232d;
  color: #eef5ff;
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.55;
}

.wizard-footer {
  margin-top: 1.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(36, 49, 58, 0.08);
}

.error-panel {
  margin-bottom: 0;
}

.error-list {
  padding-left: 1rem;
}

.generator-card .card-body {
  padding: 1.25rem;
}

.section-heading {
  align-items: center;
}

.empty-panel {
  padding: 1.4rem;
  color: var(--pg-muted);
  text-align: center;
}

.expression-section {
  padding: 1rem;
  border: 1px solid var(--pg-border);
  border-radius: 1rem;
  background: rgba(252, 252, 252, 0.78);
}

.expression-node {
  margin-top: 0.9rem;
  padding: 0.9rem;
  border: 1px solid rgba(29, 42, 51, 0.1);
  border-radius: 1rem;
  background: var(--pg-surface-strong);
}

.expression-node__header {
  display: grid;
  gap: 0.75rem;
}

.expression-summary {
  margin-top: 0.45rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.expression-controls {
  flex-wrap: wrap;
}

.expression-children {
  margin-left: 0.75rem;
  padding-left: 0.75rem;
  border-left: 1px solid rgba(29, 42, 51, 0.08);
}

.expression-empty,
.current-expression {
  color: var(--pg-muted);
}

.expression-empty {
  padding: 0.9rem 1rem;
  border-radius: 0.9rem;
  background: rgba(248, 250, 252, 0.8);
}

.modal-content-shell {
  background: transparent;
}

.current-expression {
  margin-top: 0.25rem;
  font-size: 0.92rem;
}

.btn-primary {
  border-color: var(--pg-accent);
  background-color: var(--pg-accent);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  border-color: var(--pg-accent-strong);
  background-color: var(--pg-accent-strong);
}

.btn-outline-primary {
  color: var(--pg-accent);
  border-color: rgba(15, 118, 110, 0.35);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus-visible {
  background: var(--pg-accent);
  border-color: var(--pg-accent);
}

@media (min-width: 768px) {
  .wizard-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .hero-panel,
  .wizard-panel,
  .baseline-card,
  .policy-card,
  .summary-card {
    padding: 1rem;
  }

  .mode-switcher {
    width: 100%;
  }

  .mode-pill {
    flex: 1 1 0;
    min-width: 0;
  }

  .baseline-card__header,
  .policy-card__top,
  .wizard-footer,
  .output-card summary,
  .output-card__actions,
  .section-heading {
    flex-direction: column;
    align-items: stretch;
  }
}