/* abcGEO — shared styles */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* ——— Raw palette — bright, vibrant, cheerful ———
     Contrast-verified: every text token below clears WCAG AAA (>=7:1)
     against the cream, cream-alt and white surfaces it is used on. */

  /* 1. Primary accent — electric amber / coral (high-energy focal points) */
  --color-coral: #FF6B4A;        /* decorative focal: gradients, glows, rules  */
  --color-coral-deep: #E8502B;   /* pressed / stronger decorative              */
  --color-amber: #FF8C00;        /* CTA surface — 7.49:1 with --color-cta-on   */
  --color-amber-hi: #FFA033;     /* CTA hover  — 8.59:1 with --color-cta-on    */
  --color-warm-ink: #8F2F10;     /* warm TEXT  — 7.7:1 cream / 8.1:1 white     */

  /* 2. Secondary accent — vibrant cyan / teal (interactive + badges) */
  --color-teal: #00C9A7;         /* badge + active fill — 7.70:1 with ink      */
  --color-teal-hi: #2BDCC0;      /* hover fill — 9.40:1 with ink               */
  --color-cyan: #00B4D8;         /* decorative borders, gradients (non-text)   */
  --color-teal-ink: #00564C;     /* teal TEXT  — 8.19:1 cream / 8.62:1 white   */
  --color-cyan-ink: #0A5A72;     /* cyan TEXT  — 7.34:1 cream / 7.73:1 white   */

  /* 3. Status & data visualization */
  --color-success-green: #0F7B4F;
  --color-warning-amber: #6B3F00;
  --color-error-crimson: #C2261B;

  /* 4. Text — soft dark slate, never harsh pure black */
  --color-ink: #1A202C;          /* headings + body — 15.5:1 on cream          */
  --color-ink-soft: #2D3748;     /* 11.4:1 on cream                            */
  --color-ink-muted: #455063;    /* secondary text — 7.7 / 8.1 / 7.6:1 AAA     */
  --color-ink-cta: #141A23;      /* labels on bright fills                     */

  /* 5. Backgrounds & surfaces — warm off-whites, crisp white cards */
  --color-cream: #FAF9F6;        /* page background                            */
  --color-cream-alt: #F4F7F6;    /* alternating sections + insets              */
  --color-white: #FFFFFF;        /* cards & containers                         */

  /* 6. Soft colorful elevation */
  --shadow-xs: 0 1px 2px rgba(26, 32, 44, 0.04), 0 2px 8px -2px rgba(255, 107, 74, 0.08);
  --shadow-sm: 0 1px 3px rgba(26, 32, 44, 0.05), 0 6px 16px -6px rgba(255, 107, 74, 0.14);
  --shadow-md: 0 2px 6px rgba(26, 32, 44, 0.05), 0 14px 32px -12px rgba(255, 107, 74, 0.18),
               0 10px 26px -14px rgba(0, 201, 167, 0.20);
  --shadow-lg: 0 4px 10px rgba(26, 32, 44, 0.05), 0 28px 60px -24px rgba(255, 107, 74, 0.24),
               0 18px 44px -22px rgba(0, 180, 216, 0.22);
  --shadow-cta: 0 8px 22px -6px rgba(255, 140, 0, 0.45);
  --shadow-cta-hi: 0 14px 30px -8px rgba(255, 140, 0, 0.55), 0 6px 16px -8px rgba(255, 107, 74, 0.45);

  /* ——— Legacy semantic aliases (kept so existing rules resolve) ——— */
  --color-primary-electric: var(--color-amber);
  --color-secondary-slate: var(--color-ink-muted);
  --color-trust-blue: var(--color-cyan-ink);
  --color-deep-slate: var(--color-ink-soft);
  --color-ai-cyan: var(--color-teal);
  --color-space-navy: var(--color-ink);
  --color-charcoal-body: var(--color-ink);
  --color-text-muted: var(--color-ink-muted);
  --color-bg-clean-white: var(--color-white);
  --color-bg-soft-gray: var(--color-cream);
  --color-bg-grid-gray: var(--color-cream-alt);

  /* ——— Default segment: GEO views (60 cream / 30 ink / 10 coral-teal) ——— */
  --color-surface: var(--color-cream);
  --color-surface-elevated: var(--color-white);
  --color-surface-soft: var(--color-cream-alt);
  --color-surface-inset: var(--color-cream-alt);
  --color-on-surface: var(--color-ink);
  --color-on-surface-muted: var(--color-ink-muted);

  --color-accent: var(--color-teal-ink);      /* accent used as TEXT */
  --color-accent-fill: var(--color-teal);     /* accent used as FILL */
  --color-accent-rgb: 0, 201, 167;
  --color-accent-dim: rgba(var(--color-accent-rgb), 0.14);

  --color-cta: var(--color-amber);
  --color-cta-hover: var(--color-amber-hi);
  --color-cta-on: var(--color-ink-cta);
  --color-cta-rgb: 255, 140, 0;
  --color-cta-dim: rgba(255, 107, 74, 0.12);

  --color-link: var(--color-teal-ink);
  --color-border: rgba(26, 32, 44, 0.12);
  --color-border-strong: rgba(0, 201, 167, 0.55);
  --color-prose: var(--color-ink-soft);
  --color-code: var(--color-ink);

  --bg: var(--color-surface);
  --bg-elevated: var(--color-surface-elevated);
  --bg-soft: var(--color-surface-soft);
  --sky: var(--color-accent);
  --sky-fill: var(--color-accent-fill);
  --sky-dim: var(--color-accent-dim);
  --orange: var(--color-warm-ink);
  --orange-fill: var(--color-coral);
  --orange-dim: var(--color-cta-dim);
  --text: var(--color-on-surface);
  --muted: var(--color-on-surface-muted);
  --border: var(--color-border);

  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --ease-energetic: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* SEO views — 60 cream-alt / 30 ink / 10 cyan */
.theme-seo,
[data-theme="seo"] {
  --color-surface: var(--color-cream-alt);
  --color-surface-elevated: var(--color-white);
  --color-surface-soft: var(--color-cream);
  --color-surface-inset: var(--color-cream);
  --color-on-surface: var(--color-ink);
  --color-on-surface-muted: var(--color-ink-muted);

  --color-accent: var(--color-cyan-ink);
  --color-accent-fill: var(--color-cyan);
  --color-accent-rgb: 0, 180, 216;
  --color-accent-dim: rgba(var(--color-accent-rgb), 0.13);

  --color-cta: var(--color-amber);
  --color-cta-hover: var(--color-amber-hi);
  --color-cta-on: var(--color-ink-cta);
  --color-cta-rgb: 255, 140, 0;
  --color-cta-dim: rgba(255, 107, 74, 0.12);

  --color-link: var(--color-cyan-ink);
  --color-border: rgba(26, 32, 44, 0.12);
  --color-prose: var(--color-ink-soft);
  --color-code: var(--color-ink);

  --bg: var(--color-surface);
  --bg-elevated: var(--color-surface-elevated);
  --bg-soft: var(--color-surface-soft);
  --sky: var(--color-accent);
  --sky-fill: var(--color-accent-fill);
  --sky-dim: var(--color-accent-dim);
  --orange: var(--color-warm-ink);
  --orange-fill: var(--color-coral);
  --orange-dim: var(--color-cta-dim);
  --text: var(--color-on-surface);
  --muted: var(--color-on-surface-muted);
  --border: var(--color-border);
}

/* GEO views — 60 cream / 30 ink / 10 coral + teal */
.theme-geo,
[data-theme="geo"] {
  --color-surface: var(--color-cream);
  --color-surface-elevated: var(--color-white);
  --color-surface-soft: var(--color-cream-alt);
  --color-surface-inset: var(--color-cream-alt);
  --color-on-surface: var(--color-ink);
  --color-on-surface-muted: var(--color-ink-muted);

  --color-accent: var(--color-teal-ink);
  --color-accent-fill: var(--color-teal);
  --color-accent-rgb: 0, 201, 167;
  --color-accent-dim: rgba(var(--color-accent-rgb), 0.14);

  --color-cta: var(--color-amber);
  --color-cta-hover: var(--color-amber-hi);
  --color-cta-on: var(--color-ink-cta);
  --color-cta-rgb: 255, 140, 0;
  --color-cta-dim: rgba(255, 107, 74, 0.12);

  --color-link: var(--color-teal-ink);
  --color-border: rgba(26, 32, 44, 0.12);
  --color-prose: var(--color-ink-soft);
  --color-code: var(--color-ink);

  --bg: var(--color-surface);
  --bg-elevated: var(--color-surface-elevated);
  --bg-soft: var(--color-surface-soft);
  --sky: var(--color-accent);
  --sky-fill: var(--color-accent-fill);
  --sky-dim: var(--color-accent-dim);
  --orange: var(--color-warm-ink);
  --orange-fill: var(--color-coral);
  --orange-dim: var(--color-cta-dim);
  --text: var(--color-on-surface);
  --muted: var(--color-on-surface-muted);
  --border: var(--color-border);
}

/* Editorial blog — 60 white / 30 ink / 10 coral */
.theme-blog,
[data-theme="blog"] {
  --color-surface: var(--color-white);
  --color-surface-elevated: var(--color-cream);
  --color-surface-soft: var(--color-cream);
  --color-surface-inset: var(--color-cream-alt);
  --color-on-surface: var(--color-ink);
  --color-on-surface-muted: var(--color-ink-muted);

  --color-accent: var(--color-warm-ink);
  --color-accent-fill: var(--color-coral);
  --color-accent-rgb: 255, 107, 74;
  --color-accent-dim: rgba(var(--color-accent-rgb), 0.12);

  --color-cta: var(--color-amber);
  --color-cta-hover: var(--color-amber-hi);
  --color-cta-on: var(--color-ink-cta);
  --color-cta-rgb: 255, 140, 0;
  --color-cta-dim: rgba(255, 107, 74, 0.12);

  --color-link: var(--color-teal-ink);
  --color-border: rgba(26, 32, 44, 0.11);
  --color-prose: var(--color-ink-soft);
  --color-code: var(--color-ink);

  --bg: var(--color-surface);
  --bg-elevated: var(--color-surface-elevated);
  --bg-soft: var(--color-surface-soft);
  --sky: var(--color-accent);
  --sky-fill: var(--color-accent-fill);
  --sky-dim: var(--color-accent-dim);
  --orange: var(--color-warm-ink);
  --orange-fill: var(--color-coral);
  --orange-dim: var(--color-cta-dim);
  --text: var(--color-on-surface);
  --muted: var(--color-on-surface-muted);
  --border: var(--color-border);
}

/* Semantic utility helpers (dynamic var() references) */
.bg-surface { background-color: var(--color-surface); }
.bg-surface-elevated { background-color: var(--color-surface-elevated); }
.bg-soft-gray { background-color: var(--color-cream); }
.bg-grid-gray { background-color: var(--color-cream-alt); }
.bg-clean-white { background-color: var(--color-white); }
.bg-space-navy { background-color: var(--color-cream); }

.text-on-surface { color: var(--color-on-surface); }
.text-muted { color: var(--color-on-surface-muted); }
.text-charcoal { color: var(--color-ink); }
.text-accent { color: var(--color-accent); }
.text-link { color: var(--color-link); }
.text-cta { color: var(--color-warm-ink); }

.border-token { border-color: var(--color-border); }
.accent-border { border-color: var(--color-accent-fill); }

.text-success { color: var(--color-success-green); }
.text-warning { color: var(--color-warning-amber); }
.text-error { color: var(--color-error-crimson); }
.bg-success-soft { background-color: rgba(15, 123, 79, 0.12); }
.bg-warning-soft { background-color: rgba(255, 140, 0, 0.16); }
.bg-error-soft { background-color: rgba(194, 38, 27, 0.10); }

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Cheerful ambient wash — soft coral, amber and teal blooms on warm cream */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 70% 46% at 8% -8%, rgba(255, 107, 74, 0.16), transparent 58%),
    radial-gradient(ellipse 58% 42% at 94% 4%, rgba(0, 201, 167, 0.16), transparent 55%),
    radial-gradient(ellipse 60% 40% at 50% 104%, rgba(255, 176, 32, 0.14), transparent 60%),
    linear-gradient(180deg, var(--color-cream) 0%, var(--color-cream-alt) 55%, var(--color-cream) 100%);
}

.theme-blog::before,
[data-theme="blog"]::before,
.theme-seo::before,
[data-theme="seo"]::before {
  background:
    radial-gradient(ellipse 70% 44% at 10% -8%, rgba(255, 107, 74, 0.10), transparent 58%),
    radial-gradient(ellipse 54% 38% at 92% 2%, rgba(0, 201, 167, 0.10), transparent 55%),
    linear-gradient(180deg, var(--color-white) 0%, var(--color-cream) 45%, var(--color-cream) 100%);
}

/* Sectional surfaces resolve 60/30/10 when nested inside another theme */
.section.theme-blog,
.section[data-theme="blog"] {
  background: var(--color-white);
  color: var(--color-ink);
}

.section.theme-seo,
.section[data-theme="seo"] {
  background: var(--color-cream-alt);
  color: var(--color-ink);
}

.section.theme-geo,
.section[data-theme="geo"] {
  background: transparent;
  color: var(--color-ink);
}

h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--color-ink);
}

.font-mono {
  font-family: var(--font-mono);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* Energetic, consistent focus ring */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 3px solid var(--color-teal-ink);
  outline-offset: 2px;
  border-radius: 0.35rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ——— Navigation ——— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--color-cream) 86%, transparent);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.9), var(--shadow-xs);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--color-ink);
}

.logo .geo {
  color: var(--sky);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  position: relative;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -0.35rem;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-coral), var(--color-amber));
  transition: right 0.25s var(--ease-energetic);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  right: 0;
}

.btn,
.nav-links a.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.2rem;
  border-radius: 0.6rem;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.22s var(--ease-energetic), background 0.2s ease,
              border-color 0.2s ease, box-shadow 0.22s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

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

/* `.nav-links a` (0,2,0) would otherwise beat `.btn-primary` (0,1,0) and
   repaint the in-menu CTA label with the muted nav colour. */
.btn-primary,
.nav-links a.btn-primary {
  background: linear-gradient(135deg, var(--color-amber) 0%, var(--color-coral) 100%);
  color: var(--color-cta-on);
  box-shadow: var(--shadow-cta);
}

.btn-primary:hover,
.nav-links a.btn-primary:hover {
  /* Hover lightens so the label contrast rises rather than falls */
  background: linear-gradient(135deg, var(--color-amber-hi) 0%, var(--color-amber) 100%);
  box-shadow: var(--shadow-cta-hi);
}

.btn-secondary,
.nav-links a.btn-secondary {
  background: var(--color-white);
  border-color: rgba(var(--color-accent-rgb), 0.55);
  color: var(--sky);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--sky-dim);
  border-color: var(--color-accent-fill);
  box-shadow: var(--shadow-sm);
}

.btn-ghost,
.nav-links a.btn-ghost {
  background: var(--color-white);
  border-color: var(--border);
  color: var(--text);
  box-shadow: var(--shadow-xs);
}

.btn-ghost:hover {
  border-color: rgba(var(--color-accent-rgb), 0.5);
  box-shadow: var(--shadow-sm);
}

.nav-toggle {
  display: none;
  background: var(--color-white);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 0.4rem;
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  font-weight: 600;
}

.nav-cta {
  display: none;
}

@media (min-width: 900px) {
  .nav-cta {
    display: inline-flex;
  }
}

@media (max-width: 899px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: var(--color-cream);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    border-top: 1px solid var(--border);
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 0;
  }

  .nav-links a::after {
    display: none;
  }

  .nav-links .mobile-cta {
    display: block;
    margin-top: 0.5rem;
  }
}

.mobile-cta {
  display: none;
}

@media (max-width: 899px) {
  .mobile-cta {
    display: block;
  }
}

/* ——— Layout ——— */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 5rem 0;
}

.section-label {
  color: var(--sky);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 800;
  margin: 0 0 0.75rem;
}

.section-lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 38rem;
  margin: 0;
}

/* ——— Hero ——— */
.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 72% 34%, rgba(255, 107, 74, 0.24), transparent 46%),
    radial-gradient(circle at 24% 68%, rgba(0, 201, 167, 0.22), transparent 44%),
    radial-gradient(circle at 52% 8%, rgba(255, 176, 32, 0.20), transparent 42%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 40px,
      rgba(26, 32, 44, 0.028) 40px,
      rgba(26, 32, 44, 0.028) 41px
    ),
    linear-gradient(140deg, var(--color-white) 0%, var(--color-cream) 52%, var(--color-cream-alt) 100%);
  animation: heroPulse 12s ease-in-out infinite alternate;
}

@keyframes heroPulse {
  from { filter: saturate(1); }
  to { filter: saturate(1.18); }
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 4.5rem 0 5rem;
  max-width: 46rem;
}

/* `.hero .brand-mark` — outranks `.hero p` so the wordmark keeps display scale */
.brand-mark,
.hero .brand-mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
  line-height: 1;
  color: var(--color-ink);
  max-width: none;
}

.brand-mark span {
  background: linear-gradient(100deg, #C2410C 0%, var(--color-warm-ink) 45%, var(--color-teal-ink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1 {
  font-size: clamp(1.5rem, 3.2vw, 2.15rem);
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--text);
}

.hero p {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 34rem;
  margin: 0 0 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ——— Formula demo (interactive card — intentional) ——— */
.formula-panel {
  margin-top: 2.5rem;
  background: var(--color-white);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
}

.formula-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .formula-grid {
    grid-template-columns: 1fr auto 1fr auto 1.2fr;
    align-items: end;
  }
}

.field label {
  display: block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--sky);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.field input,
.field select {
  width: 100%;
  background: var(--color-white);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 0.5rem;
  padding: 0.75rem 0.9rem;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:hover,
.field select:hover {
  border-color: rgba(var(--color-accent-rgb), 0.5);
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-accent-fill);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.28);
}

.op {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-warm-ink);
  text-align: center;
  padding-bottom: 0.55rem;
}

.geo-output {
  margin-top: 1.25rem;
  padding: 1.1rem 1.2rem;
  border-left: 4px solid var(--color-accent-fill);
  background: var(--sky-dim);
  border-radius: 0 0.6rem 0.6rem 0;
}

.geo-output .label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--sky);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.geo-output p {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text);
}

.geo-output .cite {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ——— Tools grid ——— */
.tools-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

@media (min-width: 720px) {
  .tools-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tool-item {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--color-coral);
  border-radius: 0.9rem;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease-energetic), box-shadow 0.25s ease, border-color 0.2s ease;
}

.tool-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.tool-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}

.tool-item p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.tool-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--sky);
}

.tool-meta a {
  font-weight: 600;
  transition: color 0.2s ease, transform 0.2s var(--ease-energetic);
  display: inline-block;
}

.tool-meta a:hover {
  color: var(--color-warm-ink);
  transform: translateX(2px);
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 0.35rem;
  background: rgba(255, 140, 0, 0.18);
  color: var(--color-warning-amber);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
}

.badge-live {
  background: var(--color-teal);
  color: var(--color-ink-cta);
}

/* ——— Blog stream ——— */
.blog-list {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.blog-item {
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--color-white);
  box-shadow: var(--shadow-xs);
  transition: transform 0.25s var(--ease-energetic), box-shadow 0.25s ease;
}

.blog-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.blog-item h3 {
  margin: 0 0 0.65rem;
  font-size: 1.3rem;
}

.blog-item h3 a:hover {
  color: var(--color-link);
}

.answer-box {
  margin: 0.75rem 0 1rem;
  padding: 0.9rem 1rem;
  background: linear-gradient(90deg, var(--sky-dim), rgba(255, 107, 74, 0.06));
  border-left: 4px solid var(--color-accent-fill);
  border-radius: 0 0.5rem 0.5rem 0;
}

.answer-box .label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--sky);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.answer-box p {
  margin: 0;
  color: var(--text);
  font-size: 0.95rem;
}

.blog-meta {
  color: var(--muted);
  font-size: 0.85rem;
}

/* ——— Framework page ——— */
.page-hero {
  padding: 4rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0.5rem 0 1rem;
}

.prose {
  max-width: 720px;
}

.prose h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: 1.55rem;
}

.prose p {
  color: var(--color-prose);
  margin: 0 0 1rem;
}

.prose ul {
  color: var(--color-prose);
  padding-left: 1.2rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose a {
  color: var(--color-link);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(var(--color-accent-rgb), 0.5);
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}

.prose a:hover {
  color: var(--color-warm-ink);
  text-decoration-color: var(--color-coral);
}

.equation-block {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: stretch;
  margin: 2rem 0;
}

.eq-part {
  flex: 1 1 140px;
  padding: 1.1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--color-white);
  box-shadow: var(--shadow-xs);
  transition: transform 0.25s var(--ease-energetic), box-shadow 0.25s ease;
}

.eq-part:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.eq-part .k {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--sky);
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.eq-part .v {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
}

.eq-part.accent {
  border-color: rgba(255, 107, 74, 0.45);
  background: linear-gradient(160deg, rgba(255, 140, 0, 0.12), rgba(255, 107, 74, 0.08));
}

.eq-part.accent .k {
  color: var(--color-warm-ink);
}

.callout {
  margin: 1.5rem 0;
  padding: 1.1rem 1.2rem;
  border: 1px solid rgba(255, 107, 74, 0.4);
  border-left: 4px solid var(--color-coral);
  border-radius: 0.75rem;
  background: linear-gradient(120deg, rgba(255, 140, 0, 0.12), rgba(0, 201, 167, 0.07));
}

.callout a {
  color: var(--color-link);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ——— INSTASTACK tool page ——— */
.tool-shell {
  padding: 3rem 0 5rem;
}

.tool-header {
  margin-bottom: 2rem;
}

.tool-header h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin: 0.4rem 0 0.75rem;
}

.entity-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-ink-cta);
  background: var(--color-teal);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  box-shadow: var(--shadow-xs);
}

.tool-workspace {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .tool-workspace {
    grid-template-columns: 1fr 1fr;
  }
}

.panel {
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--color-white);
  padding: 1.35rem;
  box-shadow: var(--shadow-sm);
}

.panel h2 {
  margin: 0 0 1rem;
  font-size: 1.15rem;
}

.stack-options {
  display: grid;
  gap: 0.75rem;
}

.stack-options label {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  cursor: pointer;
  background: var(--color-white);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s var(--ease-energetic);
}

.stack-options label:hover,
.stack-options label:has(input:checked) {
  border-color: var(--color-accent-fill);
  background: var(--sky-dim);
  transform: translateX(2px);
}

.output-box {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--color-cream-alt);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem;
  min-height: 220px;
  white-space: pre-wrap;
  color: var(--color-code);
  overflow: auto;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

/* ——— Footer ——— */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  margin-top: 2rem;
  background: var(--color-white);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
}

.footer-inner p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

/* ——— Motion ——— */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes formulaFlash {
  0% { background-color: rgba(var(--color-accent-rgb), 0.34); }
  100% { background-color: rgba(var(--color-accent-rgb), 0.14); }
}

.geo-output.flash {
  animation: formulaFlash 0.6s ease;
}