/* =============================================================================
   site.css - Jonathan Green / GTM Engineering Services
   Approved design system. Mobile-first; min-width breakpoints at 640 / 900 / 1200.
   Inter only. Spec: .context/design-spec.md
   ============================================================================= */

:root {
  /* Color */
  --navy: #0F172A;
  --navy-2: #1E293B;
  --cream: #F8F6F1;
  --white: #FFFFFF;
  --sky: #0EA5E9;
  --sky-hover: #0284C7;
  --body: #475569;
  --muted: #64748B;
  --faint: #94A3B8;           /* on dark only */
  --line: #E2E8F0;
  --rule: #D8D3C8;           /* dividers on cream */
  --field-border: #CBD5E1;
  --ok: #16A34A;
  --ok-bg: #DCFCE7;
  /* Derived (not in the approved list) */
  --on-dark: #E2E8F0;
  --ok-text: #14532D;
  --err: #B91C1C;
  --err-bg: #FEE2E2;
  --err-text: #7F1D1D;
  --rule-on-dark: rgba(255, 255, 255, 0.16);

  /* Layout */
  --container: 1200px;
  --gutter: 20px;
  --prose: 760px;
  --section-y: 56px;
  --radius: 8px;
  --radius-card: 16px;

  /* Type */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --fs-body: 17px;
  --fs-small: 14.5px;
  --fs-eyebrow: 12.5px;
  --fs-lead: 18px;
  --fs-step: 36px;
}

@media (min-width: 640px) {
  :root {
    --gutter: 24px;
    --section-y: 80px;
    --fs-body: 18px;
    --fs-small: 15.5px;
    --fs-eyebrow: 13px;
    --fs-lead: 20px;
    --fs-step: 44px;
  }
}

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

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 120px;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--body);
  font-family: var(--font);
  font-weight: 400;
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}

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

p, ul, ol, figure, address, dl, blockquote { margin: 0; }
p { max-width: var(--prose); }
address { font-style: normal; }

a {
  color: #0369A1;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 3px;
}

h1, h2, h3, h4 { margin: 0; color: var(--navy); font-weight: 700; }
h1, h2, h3, .btn { text-wrap: balance; }
.lead { text-wrap: pretty; }

h1 {
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.2;
  letter-spacing: -0.8px;
  font-weight: 800;
}
h2 {
  font-size: clamp(27px, 2.6vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.4px;
}
h3 {
  font-size: clamp(19px, 1.6vw, 21px);
  line-height: 1.3;
}
h4 { font-size: var(--fs-body); line-height: 1.4; }

strong, b { font-weight: 600; color: inherit; }

/* ---------- Layout ---------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 100;
  padding: 12px 20px;
  background: var(--navy);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius);
}
.skip-link:focus { top: 12px; }

.section { padding-block: var(--section-y); }
.section--short { padding-block: 48px; }
.section--cream, .section--dim { background: var(--cream); }
.section--white { background: var(--white); }
.section--navy, .section--ink { background: var(--navy); color: var(--on-dark); }

@media (min-width: 640px) {
  .section--short { padding-block: 64px; }
}

/* Heading rhythm inside sections */
.section h2 + *, .hero h1 + * { margin-top: 16px; }
.section h2 + .lead { margin-top: 12px; }
.section-head { margin-bottom: 32px; }
.section-head h2 + * { margin-top: 12px; }

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

.hero {
  background: var(--navy-2);
  color: var(--on-dark);
  padding-block: 72px;
}
.hero .container > * { max-width: var(--prose); }
.hero h1 { color: #fff; }
.hero .btn-row { margin-top: 32px; }
.hero .fine-print { margin-top: 16px; }

/* ---------- Dark panels ---------- */

.section--navy h1, .section--navy h2, .section--navy h3, .section--navy h4,
.section--ink h1, .section--ink h2, .section--ink h3, .section--ink h4 { color: #fff; }
.section--navy a:not(.btn), .section--ink a:not(.btn),
.hero a:not(.btn) { color: #fff; }

/* ---------- Text utilities ---------- */

.eyebrow {
  margin: 0 0 12px;
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 1.5px;
  line-height: 1.4;
  text-transform: uppercase;
  color: #475569;
}
.section--navy .eyebrow, .section--ink .eyebrow, .hero .eyebrow, .site-header .eyebrow { color: var(--sky); }

.lead {
  font-size: var(--fs-lead);
  line-height: 1.6;
  max-width: var(--prose);
}
.hero .lead, .section--navy .lead { color: var(--on-dark); }

.fine-print, .small-print {
  font-size: var(--fs-small);
  line-height: 1.6;
  color: var(--muted);
}
.hero .fine-print, .section--navy .fine-print { color: var(--faint); }

.price {
  font-size: clamp(24px, 2vw, 26px);
  line-height: 1.25;
  font-weight: 800;
  color: var(--navy);
}
.section--navy .price, .hero .price { color: #fff; }

.prose { max-width: var(--prose); }
.prose > * + * { margin-top: 1em; }
.prose > h2 { margin-top: 2em; }
.prose > h3 { margin-top: 1.6em; }
.prose > h2 + *, .prose > h3 + * { margin-top: 0.6em; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li + li { margin-top: 0.5em; }
.prose p { max-width: none; }

.divider {
  display: block;
  height: 0;
  margin: 40px 0;
  border: 0;
  border-top: 1px solid var(--rule);
}
.section--white .divider, .card .divider { border-top-color: var(--line); }
.section--navy .divider, .hero .divider { border-top-color: var(--rule-on-dark); }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 14px 28px;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn:hover { text-decoration: none; }

.btn--primary, .section--navy a.btn--primary, .hero a.btn--primary {
  background: #0369A1;
  border-color: #0369A1;
  color: #fff;
}
.btn--primary:hover, .section--navy a.btn--primary:hover, .hero a.btn--primary:hover {
  background: #075985;
  border-color: #075985;
  color: #fff;
}

.btn--outline, .btn--secondary {
  background: transparent;
  border-color: #0369A1;
  color: #0369A1;
}
.btn--outline:hover, .btn--secondary:hover { background: rgba(3, 105, 161, 0.08); color: #075985; border-color: #075985; }
.section--navy .btn--outline, .section--navy a.btn--outline,
.hero .btn--outline, .hero a.btn--outline,
.section--navy .btn--secondary, .hero .btn--secondary {
  border-color: #fff;
  color: #fff;
}
.section--navy .btn--outline:hover, .hero .btn--outline:hover,
.section--navy .btn--secondary:hover, .hero .btn--secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
}

.btn--lg { padding: 18px 36px; }

.btn-row {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 16px;
  margin-top: 32px;
}
.btn-row:first-child { margin-top: 0; }
@media (min-width: 640px) {
  .btn-row { flex-direction: row; flex-wrap: wrap; align-items: center; }
}

.cta-group { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.cta-note { font-size: var(--fs-small); color: var(--muted); }
.hero .cta-note, .section--navy .cta-note { color: var(--faint); }

/* ---------- Lists ---------- */

.list-2col, .checklist {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px 56px;
}
.list-2col li, .checklist li {
  position: relative;
  padding-left: 28px;
  max-width: var(--prose);
}
.list-2col li::before, .checklist li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.7em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sky);
  transform: translateY(-50%);
}
@media (min-width: 900px) {
  .list-2col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- Steps ---------- */

.steps {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 32px;
}
.steps > li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  column-gap: 16px;
  align-items: start;
  max-width: var(--prose);
}
.step-num {
  font-size: var(--fs-step);
  line-height: 1;
  font-weight: 800;
  color: var(--sky);
  font-variant-numeric: tabular-nums;
}
.steps > li > div > * + * { margin-top: 8px; }
@media (min-width: 640px) {
  .steps { gap: 40px; }
  .steps > li { grid-template-columns: 72px minmax(0, 1fr); column-gap: 24px; }
}

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

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 32px;
}
.card > * + * { margin-top: 12px; }
.card > :is(.btn, .btn-row) { margin-top: 24px; }

/* ---------- Accordion ---------- */

.accordion, .faq { border-bottom: 1px solid var(--line); max-width: var(--prose); }
.section--cream .accordion, .section--dim .accordion { border-bottom-color: var(--rule); }
.accordion details, .faq details { border-top: 1px solid var(--line); }
.section--cream .accordion details, .section--dim .accordion details { border-top-color: var(--rule); }
.accordion summary, .faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
  padding: 16px 0;
  font-size: var(--fs-body);
  font-weight: 600;
  line-height: 1.4;
  color: var(--navy);
  cursor: pointer;
  list-style: none;
}
.accordion summary::-webkit-details-marker, .faq summary::-webkit-details-marker { display: none; }
.accordion summary h3, .faq summary h3 { font: inherit; letter-spacing: normal; color: inherit; }
.accordion summary::after, .faq summary::after {
  content: "+";
  flex: none;
  font-size: 26px;
  line-height: 1;
  font-weight: 500;
  color: var(--sky);
}
.accordion details[open] > summary::after, .faq details[open] > summary::after { content: "\2212"; }
.accordion details > :not(summary), .faq details > :not(summary) { padding-bottom: 20px; }
.accordion details > :not(summary) + :not(summary) { margin-top: 0; }

/* ---------- Forms ---------- */

.form-field, .form__field { margin-bottom: 24px; }

.form-label, .form__label {
  display: block;
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--navy);
}
.form-required, .form__req {
  margin-left: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
}

.form-field :is(input:not([type="checkbox"], [type="radio"]), select, textarea),
.form__input, .form__select, .form__textarea {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  background: var(--white);
  border: 1px solid var(--field-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 17px;
  line-height: 1.4;
  color: var(--navy);
}
.form-field textarea, .form__textarea { min-height: 140px; resize: vertical; }
.form-field :is(input, select, textarea):focus-visible,
.form__input:focus-visible, .form__select:focus-visible, .form__textarea:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 2px;
  border-color: var(--sky);
}

.form-note, .form__note {
  margin-top: 8px;
  font-size: var(--fs-small);
  line-height: 1.5;
  color: var(--muted);
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.form-check input { flex: none; width: 24px; height: 24px; margin: 2px 0 0; accent-color: var(--sky); }
.form-check label { font-size: var(--fs-small); line-height: 1.5; color: var(--body); }

.form-status, .form__status {
  padding: 14px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
}
.form-status:empty, .form__status:empty { display: none; }
.form-status--ok { background: var(--ok-bg); border-color: var(--ok); color: var(--ok-text); }
.form-status--error { background: var(--err-bg); border-color: var(--err); color: var(--err-text); }

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

.legal-updated { color: var(--muted); font-size: var(--fs-small); }
.legal-contact { padding-top: 16px; border-top: 1px solid var(--line); }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--navy);
  color: #fff;
}
.site-header__bar {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  padding-block: 12px;
}
.site-header__brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-self: flex-start;
  color: #fff;
  text-decoration: none;
}
.site-header__brand:hover { text-decoration: none; }
.site-header__name {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.2px;
  color: #fff;
}
.site-header__tag {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  line-height: 1.3;
  text-transform: uppercase;
  color: var(--sky);
}
.site-header__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.site-header .site-header__link {
  display: inline-flex;
  align-items: center;
  flex: none;
  min-height: 48px;
  padding-inline: 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--on-dark);
  text-decoration: none;
  white-space: nowrap;
}
.site-header .site-header__link:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
.site-header .site-header__cta {
  flex: 1 1 auto;
  min-width: 0;
  max-width: 260px;
  padding: 10px 16px;
  line-height: 1.2;
}
.site-header a:focus-visible { outline-offset: 2px; }

@media (min-width: 640px) {
  .site-header__bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding-block: 14px;
  }
  .site-header__nav { gap: 24px; justify-content: flex-end; }
  .site-header .site-header__cta { flex: none; max-width: none; padding: 14px 28px; white-space: nowrap; }
}

@media (min-width: 1200px) {
  .site-header__nav { gap: 32px; }
}

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

.site-footer {
  background: var(--white);
  border-top: 1px solid var(--line);
  padding-block: 48px 32px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}
.site-footer__company { font-size: 14px; font-weight: 600; color: var(--navy); }
.site-footer__address { margin-top: 4px; }
.site-footer__links {
  list-style: none;
  padding: 0;
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 0 24px;
}
.site-footer__links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
}
.site-footer__links a:hover { color: var(--navy); }
.site-footer__legal {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  max-width: none;
}

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

@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;
  }
}