/*
 * GoFax marketing + legal site
 * Single stylesheet. Values come from design/tokens.json (v0.1.0).
 * No external requests: Inter is used if installed locally, otherwise system fonts.
 * To self-host Inter later, add @font-face rules pointing to /assets/fonts/ (see web/README.md).
 */

/* ---------- Tokens: light (default) ---------- */
:root {
  color-scheme: light dark;

  --color-primary: #1F5A85;
  --color-on-primary: #FFFFFF;
  --color-primary-pressed: #174668;
  --color-primary-container: #DDEAF4;
  --color-on-primary-container: #0F2E47;

  --color-background: #F5F6F4;
  --color-surface: #FFFFFF;
  --color-surface-variant: #ECEFEE;
  --color-surface-inverse: #1B2228;
  --color-on-surface-inverse: #F1F3F4;

  --color-text-primary: #1A1F24;
  --color-text-secondary: #4D5761;
  --color-text-link: #1F5A85;

  --color-border: #D6DCE0;
  --color-border-strong: #7D8891;
  --color-focus-ring: #1F5A85;
  --color-divider: #E3E7EA;

  --color-success: #1C6E41;
  --color-success-container: #E2F2E8;
  --color-warning: #7A4F00;
  --color-warning-container: #FBEFD5;
  --color-info: #1F5A85;
  --color-info-container: #DDEAF4;

  --font-base: Inter, "SF Pro Text", Roboto, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;

  --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;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;

  --shadow-1: 0 1px 2px rgba(11, 16, 19, 0.06), 0 1px 3px rgba(11, 16, 19, 0.08);
  --shadow-2: 0 2px 6px rgba(11, 16, 19, 0.08), 0 4px 12px rgba(11, 16, 19, 0.06);

  --focus-width: 3px;
  --page-width: 1040px;
  --text-width: 720px;
  --duration-fast: 150ms;
}

/* ---------- Tokens: dark ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #8EC1EA;
    --color-on-primary: #0B2A42;
    --color-primary-pressed: #B3D5F1;
    --color-primary-container: #1D3E59;
    --color-on-primary-container: #D6E8F7;

    --color-background: #0F1417;
    --color-surface: #171D21;
    --color-surface-variant: #222A30;
    --color-surface-inverse: #E8ECEF;
    --color-on-surface-inverse: #1A1F24;

    --color-text-primary: #E8ECEF;
    --color-text-secondary: #A7B2BB;
    --color-text-link: #8EC1EA;

    --color-border: #323D45;
    --color-border-strong: #75828C;
    --color-focus-ring: #8EC1EA;
    --color-divider: #273036;

    --color-success: #7BD39F;
    --color-success-container: #173626;
    --color-warning: #F0C25A;
    --color-warning-container: #3A2E10;
    --color-info: #8EC1EA;
    --color-info-container: #1D3E59;

    /* Dark mode: no shadows, elevation via surface color + 1px border (tokens.elevation.darkModeRule) */
    --shadow-1: none;
    --shadow-2: none;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text-primary);
  font-family: var(--font-base);
  font-size: 1rem;          /* body: 16/24 */
  line-height: 1.5;
  font-feature-settings: "cv05", "cv08";
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1 0 auto; }

h1, h2, h3, h4 { margin: 0 0 var(--space-3); color: var(--color-text-primary); }
h1 { font-size: 2.125rem; line-height: 1.18; font-weight: 700; letter-spacing: -0.4px; }   /* display 34/40 */
h2 { font-size: 1.75rem;  line-height: 1.21; font-weight: 700; letter-spacing: -0.3px; }   /* title 28/34 */
h3 { font-size: 1.375rem; line-height: 1.27; font-weight: 600; letter-spacing: -0.2px; }   /* headline 22/28 */
h4 { font-size: 1.125rem; line-height: 1.33; font-weight: 600; letter-spacing: -0.1px; }   /* subhead 18/24 */

p, ul, ol, dl, table { margin: 0 0 var(--space-4); }
ul, ol { padding-left: 1.4em; }
li + li { margin-top: var(--space-1); }
strong { font-weight: 600; }
small, .caption { font-size: 0.8125rem; line-height: 1.38; letter-spacing: 0.1px; }

a {
  color: var(--color-text-link);
  text-decoration: underline;
  text-underline-offset: 2px;
}
a:hover { text-decoration-thickness: 2px; }

:focus { outline: none; }
:focus-visible {
  outline: var(--focus-width) solid var(--color-focus-ring);
  outline-offset: 2px;
  border-radius: 4px;
}

.tnum { font-variant-numeric: tabular-nums; }
.muted { color: var(--color-text-secondary); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 10;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  color: var(--color-text-link);
  border: 2px solid var(--color-focus-ring);
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus { top: var(--space-2); }

.container {
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.container--text { max-width: calc(var(--text-width) + 2 * var(--space-5)); }

/* ---------- Header ---------- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-6);
  min-height: 64px;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 48px;
  color: var(--color-text-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.2px;
  text-decoration: none;
}
.brand svg { flex: none; color: var(--color-primary); }
.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-nav li + li { margin-top: 0; }
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-weight: 600;
  text-decoration: none;
}
.site-nav a:hover { background: var(--color-surface-variant); }
.site-nav a[aria-current="page"] {
  color: var(--color-text-link);
  text-decoration: underline;
  text-underline-offset: 6px;
  text-decoration-thickness: 2px;
}

/* ---------- Sections ---------- */
.section { padding: var(--space-12) 0; }
.section + .section { border-top: 1px solid var(--color-divider); }
.section--surface { background: var(--color-surface); }
.section__intro { max-width: var(--text-width); margin-bottom: var(--space-8); }
.section__intro p { color: var(--color-text-secondary); font-size: 1.125rem; line-height: 1.44; }

/* ---------- Hero ---------- */
.hero { padding: var(--space-16) 0 var(--space-12); }
.hero h1 { max-width: 16ch; }
.hero__lead {
  max-width: 40rem;
  font-size: 1.125rem;   /* bodyLarge 18/26 */
  line-height: 1.44;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}
.eyebrow {
  display: inline-block;
  margin-bottom: var(--space-4);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  color: var(--color-text-secondary);
}

/* ---------- Buttons / store badges ---------- */
.actions { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 56px;
  padding: 0 var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  transition: background-color var(--duration-fast) ease;
}
.button--primary { background: var(--color-primary); color: var(--color-on-primary); }
.button--primary:hover { background: var(--color-primary-pressed); }
.button--secondary {
  background: var(--color-surface);
  color: var(--color-text-link);
  border-color: var(--color-border-strong);
}
.button--secondary:hover { background: var(--color-surface-variant); }
.button[aria-disabled="true"] { cursor: default; }
.store-note { margin-top: var(--space-3); color: var(--color-text-secondary); font-size: 0.875rem; }

/* ---------- Grids & cards ---------- */
.grid { display: grid; gap: var(--space-4); }
@media (min-width: 720px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-1);
}
.section--surface .card { background: var(--color-background); box-shadow: none; }
.card h3 { font-size: 1.125rem; line-height: 1.33; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.check-list { list-style: none; padding: 0; }
.check-list li {
  position: relative;
  padding-left: 32px;
}
.check-list li + li { margin-top: var(--space-3); }
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: var(--color-success-container);
  /* check mark drawn with borders so it follows theme colors */
  box-shadow: inset 0 0 0 1px var(--color-success);
}
.check-list li::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  width: 6px;
  height: 10px;
  border: solid var(--color-success);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* ---------- Pricing ---------- */
.plan {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.plan__name { margin: 0; font-size: 1.125rem; }
.plan__price {
  margin: 0;
  font-size: 1.375rem;   /* headline: price is never smaller than trial text */
  line-height: 1.27;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.plan__period { font-size: 1rem; font-weight: 400; color: var(--color-text-secondary); }
.plan__desc { margin: 0; color: var(--color-text-secondary); }
.plan ul { margin: var(--space-2) 0 0; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}
table { width: 100%; border-collapse: collapse; }
caption {
  text-align: left;
  padding: var(--space-4);
  font-weight: 600;
  caption-side: top;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-divider);
}
thead th {
  background: var(--color-surface-variant);
  font-size: 0.875rem;
  font-weight: 600;
  border-top: 0;
}
td.num, th.num { font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ---------- Notices ---------- */
.notice {
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-info);
  background: var(--color-info-container);
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  margin: 0 0 var(--space-6);
}
.notice p:last-child { margin-bottom: 0; }
.notice--warning {
  border-left-color: var(--color-warning);
  background: var(--color-warning-container);
}
.draft-banner {
  background: var(--color-warning-container);
  border-bottom: 2px solid var(--color-warning);
  color: var(--color-text-primary);
}
.draft-banner .container { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.draft-banner p { margin: 0; }

/* ---------- FAQ (native details/summary, no JS) ---------- */
.faq { border-top: 1px solid var(--color-border); }
.faq details { border-bottom: 1px solid var(--color-border); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 56px;
  padding: var(--space-3) 0;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-secondary);
}
.faq details[open] summary::after { content: "\2212"; }
.faq details > div { padding: 0 0 var(--space-4); color: var(--color-text-secondary); max-width: var(--text-width); }

/* ---------- Legal / long-form pages ---------- */
.page-header { padding: var(--space-10) 0 var(--space-6); }
.page-header p { color: var(--color-text-secondary); }
.prose { padding-bottom: var(--space-16); }
.prose h2 { margin-top: var(--space-10); font-size: 1.375rem; line-height: 1.27; }
.prose h3 { margin-top: var(--space-6); font-size: 1.125rem; line-height: 1.33; }
.prose p, .prose li { max-width: var(--text-width); }
.toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  margin-bottom: var(--space-8);
}
.toc h2 { margin-top: 0; font-size: 1rem; }
.toc ol { margin-bottom: 0; }

dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: var(--space-2) var(--space-6); }
dl.facts dt { font-weight: 600; }
dl.facts dd { margin: 0; }
@media (max-width: 520px) {
  dl.facts { grid-template-columns: 1fr; }
  dl.facts dd { margin-bottom: var(--space-2); }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) 0 var(--space-8);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}
.site-footer nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-2);
  padding: 0;
  margin: 0 0 var(--space-4);
  list-style: none;
}
.site-footer nav li + li { margin-top: 0; }
.site-footer nav a {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 var(--space-2);
  margin-left: calc(-1 * var(--space-2));
  margin-right: var(--space-2);
  font-weight: 600;
}
.site-footer p { margin-bottom: var(--space-2); }

/* ---------- Small screens ---------- */
@media (max-width: 600px) {
  h1 { font-size: 1.75rem; line-height: 1.21; }
  .hero { padding: var(--space-10) 0 var(--space-8); }
  .section { padding: var(--space-10) 0; }
  .button { width: 100%; }
  .site-nav a { padding: 0 var(--space-2); }
}

/* ---------- Motion & print ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

@media print {
  .site-header nav, .site-footer nav, .skip-link, .actions { display: none; }
  body { background: #FFFFFF; color: #000000; }
  a { color: #000000; }
}

/* ---------- Utilities ---------- */
ol.grid, ul.grid { list-style: none; padding: 0; }
ol.grid > li + li, ul.grid > li + li { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-16 { margin-bottom: var(--space-16); }
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  margin-left: var(--space-2);
  border-radius: var(--radius-full);
  background: var(--color-surface-variant);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  vertical-align: middle;
}
code {
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: 0.875rem;
  background: var(--color-surface-variant);
  border-radius: 4px;
  padding: 2px 6px;
  white-space: normal;
  overflow-wrap: anywhere;
}