/* ===========================
   growthanalyticsengine.com
   Design: Clean, editorial, data-focused
   =========================== */

:root {
  --color-bg: #f9f8f6;
  --color-surface: #ffffff;
  --color-border: #e4e2dd;
  --color-text: #1a1a18;
  --color-muted: #6b6860;
  --color-accent: #1a4a3a;      /* deep green */
  --color-accent-light: #e8f2ee;
  --color-highlight: #f0a830;   /* amber */
  --color-highlight-light: #fef7e8;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --max-width: 900px;
  --max-width-wide: 1160px;
  --radius: 8px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

p { margin-bottom: 1rem; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Layout ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.container-wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Nav ---- */
.site-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-logo {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.01em;
  text-decoration: none;
}
.nav-logo span { color: var(--color-highlight); }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
  font-size: 0.875rem;
  color: var(--color-muted);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--color-text); }
.nav-cta {
  font-size: 0.8rem;
  background: var(--color-accent);
  color: white !important;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  transition: opacity 0.15s;
}
.nav-cta:hover { opacity: 0.88; text-decoration: none !important; }

/* ---- Hero ---- */
.hero {
  padding: 80px 24px 72px;
  text-align: center;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero h1 { max-width: 720px; margin: 0 auto 20px; }
.hero p.lead {
  font-size: 1.15rem;
  color: var(--color-muted);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.6;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 24px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
  font-family: var(--font-sans);
}
.btn-primary {
  background: var(--color-accent);
  color: white;
}
.btn-primary:hover { background: #153d30; text-decoration: none; color: white; }
.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-bg); text-decoration: none; }
.btn-accent {
  background: var(--color-highlight);
  color: var(--color-text);
}
.btn-accent:hover { background: #e89a20; text-decoration: none; color: var(--color-text); }

/* ---- Section ---- */
.section { padding: 72px 24px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { margin-bottom: 12px; }
.section-header p { color: var(--color-muted); font-size: 1.05rem; max-width: 560px; margin: 0 auto; }

.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

/* ---- Cards ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-grid {
  display: grid;
  gap: 24px;
}
.card-grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card-grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card-icon {
  width: 44px; height: 44px;
  background: var(--color-accent-light);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.card p { font-size: 0.9rem; color: var(--color-muted); margin-bottom: 20px; }
.card .tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 12px;
}

/* ---- Tool page layout ---- */
.tool-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}
.tool-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}
.tool-header .section-label { margin-bottom: 8px; }
.tool-header h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin-bottom: 12px; }
.tool-header p { color: var(--color-muted); font-size: 1rem; margin: 0; }

/* ---- Form elements ---- */
.form-group {
  margin-bottom: 24px;
}
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}
.form-group .hint {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 4px;
}
input[type="number"], input[type="range"], select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.15s;
}
input[type="number"]:focus, select:focus {
  outline: none;
  border-color: var(--color-accent);
}
input[type="range"] {
  padding: 6px 0;
  cursor: pointer;
  accent-color: var(--color-accent);
}

/* ---- Result box ---- */
.result-box {
  background: var(--color-accent);
  color: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 32px 0;
}
.result-box h3 { font-size: 0.85rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; opacity: 0.75; margin-bottom: 8px; }
.result-box .result-value { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 4px; }
.result-box .result-sub { font-size: 0.9rem; opacity: 0.75; }
.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 24px; }
.result-item h3 { font-size: 0.75rem; opacity: 0.7; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.06em; }
.result-item .val { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.02em; }
.result-item .sub { font-size: 0.8rem; opacity: 0.7; margin-top: 2px; }

/* ---- Step indicators (assessment) ---- */
.step-indicator {
  display: flex;
  gap: 6px;
  margin-bottom: 32px;
}
.step-dot {
  height: 4px;
  flex: 1;
  background: var(--color-border);
  border-radius: 2px;
  transition: background 0.3s;
}
.step-dot.active { background: var(--color-accent); }
.step-dot.done { background: var(--color-accent); opacity: 0.4; }

.question-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
}
.question-block h3 { font-size: 1.05rem; margin-bottom: 20px; }
.options-grid {
  display: grid;
  gap: 10px;
}
.option-btn {
  width: 100%;
  text-align: left;
  padding: 14px 18px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--color-text);
}
.option-btn:hover { border-color: var(--color-accent); background: var(--color-accent-light); }
.option-btn.selected { border-color: var(--color-accent); background: var(--color-accent-light); font-weight: 600; color: var(--color-accent); }

/* ---- Maturity stages ---- */
.stage-card {
  border-left: 4px solid var(--color-accent);
  padding: 20px 24px;
  background: var(--color-surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 12px;
}
.stage-card.active { background: var(--color-accent-light); }
.stage-card h4 { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-accent); margin-bottom: 4px; }
.stage-card p { font-size: 0.875rem; color: var(--color-muted); margin: 0; }

/* ---- CTA block ---- */
.cta-block {
  background: var(--color-accent);
  color: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  margin: 48px 0 0;
}
.cta-block h3 { font-size: 1.3rem; margin-bottom: 8px; }
.cta-block p { opacity: 0.8; font-size: 0.95rem; margin-bottom: 24px; }
.cta-block a {
  display: inline-block;
  background: white;
  color: var(--color-accent);
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  transition: opacity 0.15s;
}
.cta-block a:hover { opacity: 0.9; text-decoration: none; }

/* ---- Guide / SEO page ---- */
.guide-page { max-width: 720px; margin: 0 auto; padding: 48px 24px 80px; }
.guide-meta { display: flex; gap: 16px; align-items: center; margin-bottom: 32px; flex-wrap: wrap; }
.guide-meta .tag { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-accent); background: var(--color-accent-light); padding: 4px 10px; border-radius: 20px; }
.guide-meta time { font-size: 0.8rem; color: var(--color-muted); }
.guide-meta .author { font-size: 0.8rem; color: var(--color-muted); }
.guide-content h2 { margin: 36px 0 12px; }
.guide-content h3 { margin: 28px 0 10px; }
.guide-content ul, .guide-content ol { margin: 0 0 1rem 1.5rem; }
.guide-content li { margin-bottom: 4px; }
.checklist li { list-style: none; padding-left: 0; }
.checklist li::before { content: "✓ "; color: var(--color-accent); font-weight: 700; }
.guide-tool-cta {
  background: var(--color-highlight-light);
  border: 1.5px solid var(--color-highlight);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 32px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.guide-tool-cta p { margin: 0; font-size: 0.9rem; }
.faq-block { margin-top: 48px; }
.faq-block h2 { margin-bottom: 24px; }
.faq-item { border-bottom: 1px solid var(--color-border); padding: 20px 0; }
.faq-item h4 { font-size: 0.95rem; margin-bottom: 8px; }
.faq-item p { font-size: 0.875rem; color: var(--color-muted); margin: 0; }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 24px;
  background: var(--color-surface);
}
.footer-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand { font-size: 0.875rem; font-weight: 700; color: var(--color-accent); }
.footer-brand span { color: var(--color-highlight); }
.footer-note { font-size: 0.8rem; color: var(--color-muted); }
.footer-note a { color: var(--color-accent); }

/* ---- Utilities ---- */
.text-muted { color: var(--color-muted); }
.text-accent { color: var(--color-accent); }
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.hidden { display: none; }

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 48px 20px 48px; }
  .section { padding: 48px 20px; }
  .card { padding: 24px; }
  .result-box { padding: 24px; }
  .cta-block { padding: 28px 20px; }
}