/* ============================================================
   Pragmatic Tech — shared stylesheet
   Design system: "Trust & Authority" — navy + blue accent,
   generous whitespace, single primary CTA per screen.
   Tokens first; components below. Light theme by design.
   ============================================================ */

:root {
  /* Color tokens */
  --color-primary: #0f172a;
  --color-on-primary: #ffffff;
  --color-secondary: #334155;
  --color-accent: #0369a1;
  --color-accent-hover: #075985;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-foreground: #020617;
  --color-muted: #e8ecf1;
  --color-muted-text: #475569;
  --color-border: #e2e8f0;
  --color-ring: #0369a1;

  /* Type scale */
  --font-heading: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;

  /* Spacing rhythm (8px system) */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;

  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(2, 6, 23, 0.06);
  --shadow-md: 0 4px 12px rgba(2, 6, 23, 0.08);
  --container: 1120px;
}

/* ---------- Base ---------- */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-foreground);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); margin-bottom: var(--space-2); }
h3 { font-size: var(--text-xl); margin-bottom: var(--space-1); }
h4 { font-size: var(--text-lg); margin-bottom: var(--space-1); }

p {
  margin-bottom: var(--space-2);
  color: var(--color-secondary);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-ring);
  outline-offset: 2px;
  border-radius: 4px;
}

img, svg { max-width: 100%; height: auto; }

ul { margin: 0 0 var(--space-2) var(--space-3); color: var(--color-secondary); }
ul li { margin-bottom: var(--space-1); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-1) var(--space-2);
  z-index: 100;
}

.skip-link:focus {
  left: var(--space-2);
  top: var(--space-1);
  color: var(--color-on-primary);
}

/* ---------- Header / nav ---------- */

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 68px;
  flex-wrap: wrap;
  padding-top: var(--space-1);
  padding-bottom: var(--space-1);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
}

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

.brand img { width: 34px; height: 34px; }

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-3);
}

.site-nav a:not(.button) {
  color: var(--color-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  padding: 0.5rem 0;
}

.site-nav a:not(.button):hover,
.site-nav a[aria-current="page"] { color: var(--color-accent); }

.site-nav a[aria-current="page"] {
  border-bottom: 2px solid var(--color-accent);
}

/* ---------- Buttons ---------- */

.button {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-base);
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  min-height: 44px;
}

.button-primary {
  background: var(--color-accent);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
}

.button-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-md);
}

.button-secondary {
  background: var(--color-surface);
  color: var(--color-accent);
  border-color: var(--color-border);
}

.button-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-hover);
}

.button-nav {
  padding: 0.55rem 1.15rem;
  font-size: var(--text-sm);
}

/* ---------- Hero ---------- */

.hero {
  padding: var(--space-12) 0 var(--space-8);
  text-align: center;
  background:
    radial-gradient(ellipse 70% 55% at 50% -10%, rgba(3, 105, 161, 0.09), transparent),
    var(--color-background);
}

.hero h1 {
  max-width: 780px;
  margin: 0 auto var(--space-3);
}

.hero .lede {
  font-size: var(--text-lg);
  max-width: 620px;
  margin: 0 auto var(--space-4);
  color: var(--color-muted-text);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.kicker {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

/* ---------- Credibility strip / metrics ---------- */

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: var(--space-2);
  margin: var(--space-6) auto 0;
  max-width: 920px;
}

.metric {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-2);
  text-align: center;
}

.metric strong {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.metric span {
  font-size: var(--text-sm);
  color: var(--color-muted-text);
}

/* ---------- Sections ---------- */

.section { padding: var(--space-8) 0; }

.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-intro {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-6);
}

.section-intro p { color: var(--color-muted-text); }

/* ---------- Cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-3);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: rgba(3, 105, 161, 0.08);
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.card .icon svg { width: 26px; height: 26px; }

/* Feature list (why us) */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: var(--space-2);
}

.feature {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2);
  font-weight: 500;
  color: var(--color-secondary);
}

.feature svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* Pricing / packages */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-3);
  align-items: stretch;
}

.plan {
  display: flex;
  flex-direction: column;
  position: relative;
}

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-on-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 2px 14px;
  border-radius: 999px;
  white-space: nowrap;
}

.plan.featured { border-color: var(--color-accent); }

.price {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.price .per {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-muted-text);
  white-space: nowrap;
}

/* 4-up grid for the one-time services row */
.card-grid.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(min(230px, 100%), 1fr));
}

.card-grid.grid-4 .price { font-size: var(--text-2xl); }

.price-note {
  font-size: var(--text-sm);
  color: var(--color-muted-text);
  margin-bottom: var(--space-2);
}

.plan-features {
  list-style: none;
  margin: 0 0 var(--space-3);
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  color: var(--color-secondary);
  font-size: var(--text-sm);
}

.plan-features svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.plan .button { text-align: center; }

/* How it works — numbered steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: var(--space-3);
  counter-reset: step;
}

.step {
  text-align: center;
  padding: var(--space-2);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

/* Case study cards */
.case-study dt {
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--space-2);
}

.case-study dd {
  margin-left: 0;
  color: var(--color-secondary);
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--color-primary);
  color: var(--color-on-primary);
  text-align: center;
  padding: var(--space-8) 0;
}

.cta-band h2 { color: var(--color-on-primary); }

.cta-band p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 560px;
  margin: 0 auto var(--space-4);
}

/* ---------- Legal / prose pages ---------- */

.prose {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-6) 0;
}

.prose h1 { font-size: var(--text-3xl); margin-bottom: var(--space-2); }
.prose h2 { font-size: var(--text-xl); margin: var(--space-4) 0 var(--space-2); }
.prose h3 { font-size: var(--text-lg); margin: var(--space-3) 0 var(--space-1); }
.prose h4 { font-size: var(--text-base); margin: var(--space-2) 0 var(--space-1); }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-6) 0 var(--space-4);
  margin-top: var(--space-8);
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer-column { min-width: 220px; }

.footer-column h3 {
  color: var(--color-on-primary);
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.8);
  display: block;
  padding: 0.35rem 0;
  font-size: var(--text-sm);
}

.site-footer a:hover { color: var(--color-on-primary); }

.copyright {
  width: 100%;
  text-align: center;
  padding-top: var(--space-3);
  margin-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.55);
  font-size: var(--text-sm);
}

/* Copy-email affordance */
.email-container {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  position: relative;
}

.email-container a { display: inline; }

.copy-icon {
  cursor: pointer;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: 6px;
  padding: 6px;
  color: rgba(255, 255, 255, 0.9);
  display: inline-flex;
  transition: background-color 0.2s ease;
  min-width: 32px;
  min-height: 32px;
  align-items: center;
  justify-content: center;
}

.copy-icon:hover { background: rgba(255, 255, 255, 0.3); }

.copy-icon svg { width: 16px; height: 16px; }

.button-container { position: relative; display: inline-block; }

.copy-tooltip {
  position: absolute;
  top: -36px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: var(--text-sm);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.copy-tooltip.show { opacity: 1; }

/* ---------- 404 ---------- */

.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6) var(--space-3);
}

.error-page h1 {
  font-size: 5rem;
  color: var(--color-accent);
}

/* ---------- Responsive ---------- */

@media (max-width: 768px) {
  :root {
    --text-4xl: 2.25rem;
    --text-3xl: 1.75rem;
  }

  .hero { padding: var(--space-8) 0 var(--space-6); }
  .section { padding: var(--space-6) 0; }
  .prose { padding: var(--space-3); }

  .site-header .container {
    justify-content: center;
    text-align: center;
  }
}

/* ---------- Motion preferences ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}