/* =============================================
   How It Works -- Page-specific styles
   Relies on base styles from styles.css
   ============================================= */

/* Section layout */
.hiw-section {
  padding: 100px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.hiw-section:last-of-type {
  border-bottom: none;
}

/* Hero section */
.hiw-hero-section {
  padding-top: 140px;
  background: linear-gradient(135deg, #0a0a0f 0%, #141420 50%, #0a0a0f 100%);
}

.hiw-hero {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.hiw-hero h1 {
  font-size: 3rem;
  margin-bottom: 1.25rem;
}

.hiw-subtitle {
  font-size: 1.15rem;
  color: #999;
  line-height: 1.7;
  max-width: 680px;
  margin: 0 auto;
}

.hiw-subtitle code {
  color: #10b981;
  font-size: 0.9em;
}

/* Two-column layout */
.hiw-layout {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 48px;
  align-items: start;
  min-width: 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.hiw-layout > * {
  min-width: 0;
}

.hiw-section.visible .hiw-layout {
  opacity: 1;
  transform: translateY(0);
}

/* Narrative column */
.hiw-narrative {
  padding-top: 8px;
}

.hiw-narrative h2 {
  text-align: left;
  margin-bottom: 1rem;
}

.hiw-narrative p {
  color: #a6a6aa;
  line-height: 1.75;
  margin-bottom: 1rem;
}

.hiw-narrative p:last-child {
  margin-bottom: 0;
}

.hiw-narrative p code {
  color: #10b981;
  font-size: 0.9em;
  background: rgba(16, 185, 129, 0.08);
  padding: 1px 5px;
  border-radius: 4px;
}

.hiw-narrative strong {
  color: #e8e4df;
}

.hiw-step-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 1rem;
}

/* Interactive panel */
.hiw-interactive-panel {
  background: #14141f;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 12px;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hiw-panel-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #666;
  display: block;
  margin-bottom: 6px;
}

.hiw-eval-toolbar {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.hiw-eval-toolbar-field {
  min-width: 0;
}

.hiw-eval-footer {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hiw-eval-footer .hiw-eval-result {
  margin: 0;
}

.hiw-input {
  width: 100%;
  background: #0a0a0f;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 10px 14px;
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, monospace;
  font-size: 0.9rem;
  color: #e8e4df;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.hiw-input:focus {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.08);
}

.hiw-select {
  width: 100%;
  background: #0a0a0f;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 10px 14px;
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.9rem;
  color: #e8e4df;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  transition: border-color 0.2s ease;
}

.hiw-select:focus {
  border-color: rgba(16, 185, 129, 0.4);
}

.hiw-error {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 0.8rem;
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.2);
  border-radius: 6px;
  padding: 8px 12px;
}

/* Token display */
.hiw-token-display {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 48px;
}

.hiw-token {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  opacity: 0;
  transform: translateY(8px);
  animation: tokenFadeIn 0.25s ease forwards;
}

@keyframes tokenFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hiw-token-value {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid transparent;
}

.hiw-token-type {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #666;
}

/* Token type colors */
.hiw-token-type-number .hiw-token-value {
  color: #79c0ff;
  background: rgba(121, 192, 255, 0.1);
  border-color: rgba(121, 192, 255, 0.2);
}

.hiw-token-type-string .hiw-token-value {
  color: #7ee787;
  background: rgba(126, 231, 135, 0.1);
  border-color: rgba(126, 231, 135, 0.2);
}

.hiw-token-type-boolean .hiw-token-value {
  color: #bc8cff;
  background: rgba(188, 140, 255, 0.1);
  border-color: rgba(188, 140, 255, 0.2);
}

.hiw-token-type-operator .hiw-token-value {
  color: #ff9a7b;
  background: rgba(255, 154, 123, 0.1);
  border-color: rgba(255, 154, 123, 0.2);
}

.hiw-token-type-identifier .hiw-token-value {
  color: #56d4c8;
  background: rgba(86, 212, 200, 0.1);
  border-color: rgba(86, 212, 200, 0.2);
}

.hiw-token-type-punctuation .hiw-token-value {
  color: #8a8a9a;
  background: rgba(138, 138, 154, 0.1);
  border-color: rgba(138, 138, 154, 0.2);
}

.hiw-token-type-pipe .hiw-token-value {
  color: #bc8cff;
  background: rgba(188, 140, 255, 0.1);
  border-color: rgba(188, 140, 255, 0.2);
}

/* Precedence panel */
.hiw-precedence-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hiw-prec-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.hiw-prec-wrong,
.hiw-prec-right {
  background: #0a0a0f;
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hiw-prec-wrong {
  border: 1px solid rgba(255, 107, 107, 0.25);
}

.hiw-prec-right {
  border: 1px solid rgba(126, 231, 135, 0.25);
}

.hiw-prec-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 999px;
  width: fit-content;
}

.hiw-prec-badge--wrong {
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.25);
}

.hiw-prec-badge--right {
  color: #7ee787;
  background: rgba(126, 231, 135, 0.1);
  border: 1px solid rgba(126, 231, 135, 0.25);
}

.hiw-prec-expr {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 0.85rem;
  color: #e8e4df;
}

.hiw-prec-note {
  font-size: 0.75rem;
  color: #666;
  margin: 0;
}

.hiw-prec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.hiw-prec-table th {
  text-align: left;
  padding: 6px 10px;
  color: #666;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.hiw-prec-table td {
  padding: 5px 10px;
  color: #a6a6aa;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
}

.hiw-prec-table td code {
  color: #10b981;
  font-size: 0.85em;
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

.hiw-prec-table tr:last-child td {
  border-bottom: none;
}

/* Tree containers */
.hiw-tree-container {
  overflow-x: auto;
  overflow-y: hidden;
  min-height: 200px;
  padding: 12px;
  background: #0a0a0f;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.hiw-tree-container--sm {
  min-height: 160px;
}

.hiw-tree-svg {
  display: block;
  min-width: 100%;
}

/* SVG node styles */
.hiw-node rect {
  stroke-width: 1.5;
  rx: 6;
  transition: filter 0.2s ease, stroke 0.2s ease;
}

.hiw-node text {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 12px;
  font-weight: 600;
  dominant-baseline: middle;
  text-anchor: middle;
  pointer-events: none;
  fill: #e8e4df;
}

.hiw-edge {
  stroke: rgba(255, 255, 255, 0.15);
  stroke-width: 1.5;
  fill: none;
  transition: stroke 0.2s ease;
}

/* Node type colors */
.hiw-node-literal rect {
  fill: rgba(16, 185, 129, 0.12);
  stroke: rgba(16, 185, 129, 0.4);
}

.hiw-node-operator rect {
  fill: rgba(255, 154, 123, 0.12);
  stroke: rgba(255, 154, 123, 0.4);
}

.hiw-node-identifier rect {
  fill: rgba(86, 212, 200, 0.12);
  stroke: rgba(86, 212, 200, 0.4);
}

.hiw-node-pipe rect {
  fill: rgba(188, 140, 255, 0.12);
  stroke: rgba(188, 140, 255, 0.4);
}

.hiw-node-control rect {
  fill: rgba(121, 192, 255, 0.12);
  stroke: rgba(121, 192, 255, 0.4);
}

.hiw-node-member rect {
  fill: rgba(86, 212, 200, 0.1);
  stroke: rgba(86, 212, 200, 0.35);
}

/* Node interaction states */
.hiw-node {
  cursor: pointer;
}

.hiw-node:hover rect {
  filter: brightness(1.35);
}

.hiw-node.highlighted rect {
  filter: brightness(1.4);
  stroke-width: 2;
}

.hiw-node.eval-dimmed {
  opacity: 0.3;
  transition: opacity 0.3s ease;
}

.hiw-node.evaluated {
  opacity: 1;
}

.hiw-node.evaluated rect {
  filter: brightness(1.6) saturate(1.5) drop-shadow(0 0 8px currentColor);
  stroke-width: 2.5;
  animation: evalRectPulse 0.5s ease;
}

@keyframes evalRectPulse {
  0% { filter: brightness(2.5) saturate(2) drop-shadow(0 0 16px currentColor); }
  100% { filter: brightness(1.6) saturate(1.5) drop-shadow(0 0 8px currentColor); }
}

/* Value label that appears during evaluation */
.hiw-node-value {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 13px;
  font-weight: 700;
  dominant-baseline: middle;
  text-anchor: middle;
  fill: #10b981;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.hiw-node-value.visible {
  opacity: 1;
}

/* Evaluation controls */
.hiw-eval-controls {
  display: flex;
  justify-content: center;
}

/* Play button */
.hiw-play-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #059669;
  color: #fff;
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 24px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.hiw-play-btn:hover {
  background: #047857;
  transform: translateY(-1px);
}

.hiw-play-btn:active {
  transform: translateY(0);
}

.hiw-play-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Evaluation result */
.hiw-eval-result {
  text-align: center;
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 1.1rem;
  font-weight: 600;
  color: #10b981;
  min-height: 28px;
  transition: opacity 0.3s ease;
}

/* Source highlight bar */
.hiw-source-highlight {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 0.85rem;
  color: #a6a6aa;
  padding: 8px 12px;
  background: #0a0a0f;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  min-height: 36px;
  line-height: 1.5;
  word-break: break-all;
}

.hiw-hl {
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  border-radius: 2px;
  padding: 1px 0;
}

/* Optimization split view */
.hiw-opt-input-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.hiw-opt-input-row .hiw-input {
  flex: 1;
}

.hiw-opt-input-row .hiw-play-btn {
  white-space: nowrap;
  flex-shrink: 0;
}

.hiw-opt-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.hiw-opt-pane {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hiw-opt-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #666;
  text-align: center;
}

.hiw-opt-message {
  text-align: center;
  font-size: 0.85rem;
  color: #7ee787;
  min-height: 22px;
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

/* CTA section */
.hiw-cta {
  text-align: center;
  padding: 120px 0 100px;
  background: linear-gradient(135deg, #0a0a0f 0%, #141420 50%, #0a0a0f 100%);
}

.hiw-cta h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hiw-cta .hiw-subtitle {
  margin-bottom: 2rem;
}

.hiw-cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Scroll reveal -- reduced motion override */
@media (prefers-reduced-motion: reduce) {
  .hiw-layout,
  .hiw-section.visible .hiw-layout {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hiw-token {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .hiw-play-btn:hover,
  .hiw-play-btn:active {
    transform: none;
  }

  .hiw-node rect,
  .hiw-edge,
  .hiw-node-value {
    transition: none;
  }

  .hiw-node.eval-dimmed {
    opacity: 1;
  }

  .hiw-node.evaluated rect {
    animation: none;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .hiw-hero h1 {
    font-size: 2rem;
  }

  .hiw-subtitle {
    font-size: 1rem;
  }

  .hiw-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hiw-narrative,
  .hiw-interactive-panel {
    min-width: 0;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .hiw-interactive-panel {
    overflow: hidden;
  }

  .hiw-input,
  .hiw-select {
    font-size: 0.8rem;
  }

  .hiw-prec-comparison {
    grid-template-columns: 1fr;
  }

  .hiw-opt-split {
    grid-template-columns: 1fr;
  }

  .hiw-eval-toolbar {
    flex-direction: column;
  }

  .hiw-opt-input-row {
    flex-direction: column;
  }

  .hiw-eval-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .hiw-section {
    padding: 64px 0;
  }

  .hiw-hero-section {
    padding-top: 100px;
  }

  .hiw-cta {
    padding: 80px 0 64px;
  }

  .hiw-cta h2 {
    font-size: 1.8rem;
  }

  .hiw-narrative h2 {
    font-size: 1.5rem;
  }

  .hiw-narrative p code {
    word-break: break-all;
  }
}

@media (max-width: 640px) {
  .hiw-hero h1 {
    font-size: 1.6rem;
  }

  .hiw-subtitle {
    font-size: 0.9rem;
    line-height: 1.7;
  }

  .hiw-interactive-panel {
    padding: 16px;
  }

  .hiw-section {
    padding: 48px 0;
  }

  .hiw-hero-section {
    padding-top: 80px;
  }

  .hiw-narrative h2 {
    font-size: 1.3rem;
  }

  .hiw-narrative p {
    font-size: 0.9rem;
  }

  .hiw-step-label {
    font-size: 0.65rem;
    padding: 2px 8px;
  }

  .hiw-play-btn {
    padding: 9px 20px;
    font-size: 0.82rem;
  }

  .hiw-cta h2 {
    font-size: 1.5rem;
  }

  .hiw-cta-actions .cta-btn {
    padding: 11px 22px;
    font-size: 0.85rem;
  }
}