/* ========================================================================
   Parsehint — Brand-spec design system
   Fonts: Fira Code (display, mono), Work Sans (body) via Google Fonts <link>
   Stance: dense/utilitarian
   ======================================================================== */

/* --- CSS Custom Properties (from brand.md tokens block) --- */
:root {
  /* Tokens */
  --font-display: 'Fira Code', 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', monospace;
  --font-body: 'Work Sans', 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Arial', sans-serif;
  --font-mono: 'Fira Code', 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', monospace;
  --radius: 2px;
  --space: 4px;
  --stance: dense;

  /* Palette — dark ground */
  --color-primary: #c48a1a;
  --color-primary-hover: #d49518;
  --color-accent: #8b6f47;
  --color-error: #cc3344;
  --color-success: #3a8a5c;

  --color-bg-page: #121212;
  --color-bg-surface: #1c1c1c;
  --color-bg-elevated: #262626;
  --color-bg-inset: #0e0e0e;

  --color-text-body: #d4d4d4;
  --color-text-muted: #888888;
  --color-text-code: #e0e0e0;
  --color-text-primary-on-dark: #f0d48a;

  --color-border: #333333;
  --color-border-focus: #c48a1a;

  /* Derived spacings */
  --gap-tight: calc(var(--space) * 1);   /* 4px */
  --gap-label: calc(var(--space) * 2);   /* 8px */
  --gap-zone: calc(var(--space) * 4);    /* 16px */

  /* Transition tokens (motion rule) */
  --transition-focus: 150ms ease;
  --transition-fade: 200ms ease;
}

/* --- Reset & base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--color-bg-page);
  color: var(--color-text-body);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* --- Shared nav --- */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(var(--space) * 3) calc(var(--space) * 4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav .nav-brand {
  display: flex;
  align-items: center;
  gap: var(--gap-label);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--color-text-body);
}

.site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 6);
}

.site-nav .nav-links a {
  font-family: var(--font-display);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-focus);
}

.site-nav .nav-links a:hover,
.site-nav .nav-links a.active {
  color: var(--color-primary);
}

/* Theme toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  padding: calc(var(--space) * 1) calc(var(--space) * 2);
  cursor: pointer;
  font-family: var(--font-body);
  transition: color var(--transition-focus), border-color var(--transition-focus);
}

.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-border-focus);
}

/* --- Container for pages --- */
.page-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 calc(var(--space) * 4);
}

/* --- Section styling --- */
.section {
  padding: calc(var(--space) * 12) 0;
  border-top: 1px solid var(--color-border);
}

.section:first-of-type { border-top: none; }

.section-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  margin-bottom: var(--gap-label);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--gap-label);
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--color-text-code);
  line-height: 1.25;
}

h1 {
  font-size: 1.5rem;
  margin-bottom: calc(var(--space) * 3);
  font-weight: 500;
}

h2 {
  font-size: 1.25rem;
  margin-bottom: calc(var(--space) * 3);
  font-weight: 500;
}

h3 {
  font-size: 1rem;
  margin-bottom: calc(var(--space) * 2);
  font-weight: 500;
}

p, li {
  font-size: 0.9rem;
  color: var(--color-text-body);
  line-height: 1.6;
}

p { margin-bottom: var(--gap-zone); }

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover { color: var(--color-primary-hover); }

/* --- Hero section --- */
.hero {
  padding: calc(var(--space) * 12) 0 calc(var(--space) * 8);
  border-top: none;
}

.hero h1 {
  font-size: 1.5rem;
  margin-bottom: var(--gap-zone);
}

.hero-sub {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--gap-zone);
}

/* --- Hero layout: headline + screenshot stacked full-width --- */
.hero-layout {
  margin-bottom: var(--gap-zone);
}

.hero-image img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-tight);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: calc(var(--space) * 2) calc(var(--space) * 5);
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-focus), color var(--transition-focus);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg-page);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-body);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* --- Proof strip (stats) --- */
.proof-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--gap-zone);
  margin: calc(var(--space) * 8) 0;
}

.proof-cell {
  border-top: 1px solid var(--color-border);
  padding-top: var(--gap-zone);
}

.proof-cell .number {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: var(--gap-tight);
}

.proof-cell .caption {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

/* --- Feature list / grid --- */
.feature-item {
  display: flex;
  gap: var(--gap-zone);
  margin-bottom: var(--gap-zone);
  padding-bottom: var(--gap-zone);
  border-bottom: 1px solid var(--color-border);
}

.feature-item:last-child { border-bottom: none; }

.feature-item .marker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
  flex-shrink: 0;
  width: 1.5em;
  text-align: right;
}

.feature-item .body h3 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  margin-bottom: var(--gap-tight);
}

.feature-item .body p {
  font-size: 0.85rem;
  margin: 0;
}

/* --- Drawn figure container --- */
.figure-container {
  margin: var(--gap-zone) 0;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--gap-zone);
  overflow: hidden;
}

.figure-container svg {
  display: block;
  width: 100%;
  height: auto;
}

/* --- Result preview (mock) --- */
.result-mock {
  background: var(--color-bg-inset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--gap-zone);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  overflow-x: auto;
  white-space: pre;
}

.result-mock .error-line {
  background: rgba(196, 138, 26, 0.15);
  border-left: 3px solid var(--color-primary);
  padding-left: var(--gap-tight);
  display: block;
}

.result-mock .highlight {
  color: var(--color-text-primary-on-dark);
  background: rgba(196, 138, 26, 0.2);
}

/* --- Limits / limitations list --- */
.limits-list {
  list-style: none;
}

.limits-list li {
  padding: var(--gap-label) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: var(--gap-label);
  align-items: baseline;
}

.limits-list li:last-child { border-bottom: none; }

.limits-list .limit-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  flex-shrink: 0;
  width: 5em;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.limits-list .limit-desc {
  font-size: 0.85rem;
  color: var(--color-text-body);
}

/* --- FAQ --- */
.faq-item {
  padding: calc(var(--space) * 3) 0;
  border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child { border-bottom: none; }

.faq-item .question {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-code);
  margin-bottom: var(--gap-tight);
}

.faq-item .answer {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: calc(var(--space) * 6) calc(var(--space) * 4);
  margin-top: calc(var(--space) * 8);
}

.footer-inner {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--gap-zone);
}

.footer-inner .footer-links {
  display: flex;
  gap: calc(var(--space) * 5);
}

.footer-inner .footer-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-inner .footer-links a:hover {
  color: var(--color-primary);
}

.footer-inner .copyright {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --- Pricing cards --- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-zone);
  margin: var(--gap-zone) 0;
}

.pricing-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 6);
}

.pricing-card.featured {
  border-color: var(--color-primary);
}

.pricing-card .plan-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: var(--gap-tight);
}

.pricing-card .plan-price {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: var(--gap-zone);
}

.pricing-card .plan-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--gap-zone);
}

.pricing-card ul {
  list-style: none;
  margin-bottom: var(--gap-zone);
}

.pricing-card ul li {
  font-size: 0.8rem;
  padding: var(--gap-tight) 0;
  padding-left: 1.2em;
  position: relative;
}

.pricing-card ul li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-family: var(--font-mono);
}

.pricing-card ul li.missing::before {
  content: '\2014';
  color: var(--color-text-muted);
}

/* --- Checkout mock --- */
.checkout-mock {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 6);
  margin: var(--gap-zone) 0;
}

.checkout-mock .demo-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  display: inline-block;
  padding: var(--gap-tight) var(--gap-label);
  margin-bottom: var(--gap-zone);
}

.form-group {
  margin-bottom: var(--gap-zone);
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--gap-tight);
}

.form-group input,
.form-group select {
  width: 100%;
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 2) calc(var(--space) * 3);
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text-body);
  transition: border-color var(--transition-focus);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-border-focus);
}

/* --- Success state (mock checkout) --- */
.success-state {
  display: none;
  text-align: center;
  padding: calc(var(--space) * 8);
}

.success-state .check {
  font-family: var(--font-mono);
  font-size: 2rem;
  color: var(--color-success);
  margin-bottom: var(--gap-zone);
}

.success-state h3 {
  margin-bottom: var(--gap-tight);
}

/* --- Legal pages --- */
.legal-content h1 {
  margin-top: calc(var(--space) * 8);
}

.legal-content h2 {
  font-size: 1rem;
  margin-top: calc(var(--space) * 6);
  margin-bottom: var(--gap-label);
}

.legal-content p {
  font-size: 0.85rem;
}

.legal-content .placeholder-notice {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent);
  padding: var(--gap-label);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: var(--gap-zone);
}

/* --- Light theme --- */
[data-theme="light"] {
  --color-bg-page: #f5f5f0;
  --color-bg-surface: #ffffff;
  --color-bg-elevated: #f0f0eb;
  --color-bg-inset: #eaeae5;

  --color-text-body: #2a2a2a;
  --color-text-muted: #777777;
  --color-text-code: #1a1a1a;
  --color-text-primary-on-dark: #8a5e0a;

  --color-border: #d4d4d0;
  --color-border-focus: #c48a1a;
}

/* --- Responsive --- */
@media (max-width: 720px) {
  .page-container { padding: 0 calc(var(--space) * 3); }

  h1 { font-size: 1.25rem; }
  h2 { font-size: 1.1rem; }

  .hero-layout {
    grid-template-columns: 1fr;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: var(--gap-label);
    padding: calc(var(--space) * 2) calc(var(--space) * 3);
  }

  .site-nav .nav-links { gap: calc(var(--space) * 3); }

  .pricing-grid { grid-template-columns: 1fr; }

  .proof-strip { grid-template-columns: 1fr; }

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

@media (max-width: 480px) {
  .section { padding: calc(var(--space) * 8) 0; }
  .hero { padding: calc(var(--space) * 8) 0 calc(var(--space) * 6); }
  .site-nav .nav-links a { font-size: 0.7rem; }
}