/* ═══════════════════════════════════════════════
   Blueprint Design System — StackStats
   Light theme default | Dark mode via [data-theme="dark"]
   ═══════════════════════════════════════════════ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

/* ── Design Tokens ── */
:root {
  /* Core palette */
  --bg:          #ffffff;
  --bg-subtle:   #f9fafb;
  --bg-muted:    #f3f4f6;
  --surface:     #ffffff;
  --surface-2:   #f9fafb;
  --border:      #e5e7eb;
  --border-subtle: rgba(0,0,0,0.06);

  /* Text */
  --text-primary:   #111827;
  --text-secondary: #374151;
  --text-muted:     #6b7280;
  --text-subtle:    #9ca3af;

  /* Accent — Emerald */
  --accent:         #10b981;
  --accent-dark:    #059669;
  --accent-light:   #d1fae5;
  --accent-xlight:  #ecfdf5;

  /* Product accents */
  --payroll-accent:   #10b981;  /* emerald */
  --remit-accent:     #3b82f6;  /* blue */
  --invoice-accent:   #8b5cf6;  /* violet */
  --hubhook-accent:   #f59e0b;  /* amber */
  --analytics-accent: #06b6d4;  /* cyan */

  /* Shadows */
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.10);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.06), 0 0 0 1px var(--border);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-display: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;

  /* Spacing scale */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Nav height */
  --nav-h: 64px;
}

/* ── Dark Mode Tokens ── */
[data-theme="dark"] {
  --bg:          #0f172a;
  --bg-subtle:   #1e293b;
  --bg-muted:    #293548;
  --surface:     #1e293b;
  --surface-2:   #273449;
  --border:      #334155;
  --border-subtle: rgba(255,255,255,0.06);

  --text-primary:   #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted:     #94a3b8;
  --text-subtle:    #64748b;

  --accent:         #10b981;
  --accent-dark:    #34d399;
  --accent-light:   rgba(16,185,129,0.15);
  --accent-xlight:  rgba(16,185,129,0.08);

  --shadow-sm:  0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.5);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.3), 0 0 0 1px var(--border);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.25s ease, color 0.25s ease;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ── Container ── */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ── Section spacing ── */
.section {
  padding: var(--space-20) 0;
}
.section-sm {
  padding: var(--space-12) 0;
}

/* ── Section header ── */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 560px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 10px 20px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.18s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(16,185,129,0.25);
}
.btn-primary:hover {
  background: var(--accent-dark);
  box-shadow: 0 4px 16px rgba(16,185,129,0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-muted);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--border);
  color: var(--text-primary);
}

.btn-ghost {
  color: var(--text-muted);
  padding: 10px 16px;
}
.btn-ghost:hover { color: var(--accent); }

.btn-sm {
  padding: 7px 14px;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

/* ── Hero ── */
.hero {
  padding-top: calc(var(--nav-h) + 72px);
  padding-bottom: var(--space-20);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 5px 14px;
  background: var(--accent-xlight);
  border: 1px solid var(--accent-light);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-6);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.hero-title .accent { color: var(--accent); }

.hero-sub {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto var(--space-10);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  justify-content: center;
  flex-wrap: wrap;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
}

.hero-stat {
  text-align: center;
}

.hero-stat-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
}

.hero-stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── Product Grid ── */
.product-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .product-grid .card-featured {
    grid-column: span 2;
  }
}

/* ── Card ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  flex-shrink: 0;
}

.card-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.card-eyebrow {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--space-5);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.tag {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-display);
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  transition: gap 0.15s ease;
}

.card-cta:hover { gap: 10px; }
.card-cta svg { flex-shrink: 0; }

/* ── Product-specific colors ── */
.prod-payroll  { --prod-color: var(--payroll-accent);  --prod-bg: rgba(16,185,129,0.08);  --prod-border: rgba(16,185,129,0.2); }
.prod-remit    { --prod-color: var(--remit-accent);    --prod-bg: rgba(59,130,246,0.08);  --prod-border: rgba(59,130,246,0.2); }
.prod-invoice  { --prod-color: var(--invoice-accent);  --prod-bg: rgba(139,92,246,0.08);  --prod-border: rgba(139,92,246,0.2); }
.prod-hubhook  { --prod-color: var(--hubhook-accent);  --prod-bg: rgba(245,158,11,0.08);  --prod-border: rgba(245,158,11,0.2); }
.prod-analytics{ --prod-color: var(--analytics-accent);--prod-bg: rgba(6,182,212,0.08);   --prod-border: rgba(6,182,212,0.2); }

.prod-payroll .card-icon,
.prod-remit .card-icon,
.prod-invoice .card-icon,
.prod-hubhook .card-icon,
.prod-analytics .card-icon {
  background: var(--prod-bg);
  border: 1px solid var(--prod-border);
}

.prod-payroll .card-eyebrow,
.prod-remit .card-eyebrow,
.prod-invoice .card-eyebrow,
.prod-hubhook .card-eyebrow,
.prod-analytics .card-eyebrow { color: var(--prod-color); }

.prod-payroll .card-cta,
.prod-remit .card-cta,
.prod-invoice .card-cta,
.prod-hubhook .card-cta,
.prod-analytics .card-cta { color: var(--prod-color); }

.prod-payroll .tag,
.prod-remit .tag,
.prod-invoice .tag,
.prod-hubhook .tag,
.prod-analytics .tag {
  background: var(--prod-bg);
  color: var(--prod-color);
}

.prod-payroll:hover,
.prod-remit:hover,
.prod-invoice:hover,
.prod-hubhook:hover,
.prod-analytics:hover {
  border-color: var(--prod-border);
}

/* ── Trust / Badges ── */
.trust-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  align-items: center;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.trust-badge-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.trust-badge-label {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.trust-badge-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ── CTA Band ── */
.cta-band {
  background: var(--accent);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  text-align: center;
  margin: 0 var(--space-6) var(--space-20);
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-4);
}

.cta-band p {
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  margin-bottom: var(--space-8);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.btn-cta-white {
  background: #fff;
  color: var(--accent-dark);
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: all 0.18s;
}
.btn-cta-white:hover { background: #ecfdf5; transform: translateY(-1px); }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-10) 0;
  background: var(--bg-subtle);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--text-primary);
}

.footer-tagline {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 2px;
}

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

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.footer-links a:hover { color: var(--accent); }

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-subtle);
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
  }
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ── Utility ── */
.text-center { text-align: center; }
.text-accent  { color: var(--accent); }
.mt-2  { margin-top: var(--space-2); }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }