/* Archvault — design system
   Colours, type, layout, components. Plain CSS, no build step. */

:root {
  --navy: #16324f;
  --navy-dark: #102336;
  --gold: #c9a227;
  --off-white: #f7f6f2;
  --white: #ffffff;
  --ink: #1a222c;
  --muted: #5a6472;
  --hairline: #e3e1da;
  --tier1-grey: #8b93a1;

  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;

  --max-width: 1080px;
  --radius: 4px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }

html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  background: var(--off-white);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  font-display: swap;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  color: var(--navy);
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.25rem; }

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

@media (min-width: 768px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2rem; }
}

.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -3rem;
  background: var(--navy);
  color: var(--white);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  z-index: 1000;
  transition: top 0.15s ease;
}
.skip-link:focus {
  top: 0.5rem;
}

/* Focus states */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* Gold rule divider */
.rule {
  border: 0;
  height: 1px;
  background: var(--gold);
  width: 64px;
  margin: 1.5rem 0;
}
.rule--center { margin-inline: auto; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  color: var(--white);
  border-bottom: 1px solid var(--navy-dark);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.9rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.brand svg { width: 32px; height: 32px; flex-shrink: 0; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 0;
  color: var(--white);
  width: 44px;
  height: 44px;
  cursor: pointer;
}
.nav-toggle svg { width: 24px; height: 24px; }

.site-nav {
  display: none;
}
.site-nav.is-open {
  display: block;
  position: fixed;
  inset: 0;
  background: var(--navy);
  z-index: 200;
  padding: 1.25rem;
}
.site-nav .nav-close {
  background: none;
  border: 0;
  color: var(--white);
  width: 44px;
  height: 44px;
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.site-nav .nav-close svg { width: 24px; height: 24px; }
.site-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 3rem;
  text-align: center;
}
.site-nav a {
  text-decoration: none;
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 1.5rem;
}
.site-nav a[aria-current="page"] {
  color: var(--gold);
}
.site-nav .nav-cta {
  border: 1px solid var(--gold);
  border-radius: var(--radius);
  padding: 0.6rem 1.5rem;
  display: inline-block;
}

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .site-nav {
    display: block;
    position: static;
    background: none;
    padding: 0;
    z-index: auto;
  }
  .site-nav .nav-close { display: none; }
  .site-nav ul {
    flex-direction: row;
    gap: 2rem;
    margin-top: 0;
    text-align: left;
  }
  .site-nav a {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
  }
  .site-nav a:hover { color: var(--gold); }
  .site-nav .nav-cta {
    padding: 0.5rem 1.25rem;
  }
  .site-nav .nav-cta:hover {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--navy);
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1rem;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.btn-primary:hover { background: var(--navy-dark); border-color: var(--navy-dark); }
.btn-secondary {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-secondary:hover { background: var(--navy); color: var(--white); }
.btn-on-navy {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}
.btn-on-navy:hover { background: var(--gold); border-color: var(--gold); }
.btn-on-navy-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-on-navy-outline:hover { border-color: var(--gold); color: var(--gold); }

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------- Hero ---------- */
.hero {
  background: var(--navy);
  color: var(--white);
  padding-block: 3.5rem;
}
.hero .container {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}
.hero h1 { color: var(--white); }
.hero p.lede {
  font-size: 1.125rem;
  color: #d7dee6;
  max-width: 46ch;
  margin-block: 1.25rem 1.75rem;
}
.hero-seal {
  justify-self: center;
  width: 200px;
}
@media (min-width: 900px) {
  .hero .container {
    grid-template-columns: 3fr 2fr;
  }
  .hero-seal { width: 240px; justify-self: end; }
}

/* Page header (non-home pages) */
.page-header {
  background: var(--navy);
  color: var(--white);
  padding-block: 3rem;
}
.page-header h1 { color: var(--white); max-width: 30ch; }
.page-header p { color: #d7dee6; max-width: 60ch; margin-top: 1rem; font-size: 1.05rem; }

/* ---------- Sections ---------- */
section { padding-block: 3.5rem; }
.section-tight { padding-block: 2rem; }
.section-intro { max-width: 65ch; }

/* Card grid */
.card-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}
@media (min-width: 700px) {
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .card-grid--2 { grid-template-columns: repeat(2, 1fr); }
}
.card {
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.75rem;
}
.card h3 { margin-bottom: 0.6rem; }
.card p { color: var(--muted); }

/* Numbered steps */
.steps {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
  counter-reset: step;
}
@media (min-width: 700px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}
.step {
  position: relative;
  padding-left: 3.25rem;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-serif);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step h3 { margin-bottom: 0.4rem; }
.step p { color: var(--muted); }

/* Strapline band */
.strapline {
  background: var(--navy);
  color: var(--white);
  text-align: center;
  padding-block: 3rem;
}
.strapline p {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--white);
  max-width: 34ch;
  margin-inline: auto;
}
.strapline .rule { background: var(--gold); }

/* ---------- Domain list (Standard page) ---------- */
.domain-list {
  list-style: none;
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}
@media (min-width: 700px) {
  .domain-list { grid-template-columns: repeat(2, 1fr); }
}
.domain-list li {
  border-left: 3px solid var(--gold);
  padding: 0.25rem 0 0.25rem 1rem;
}
.domain-list strong {
  display: block;
  color: var(--navy);
  font-family: var(--font-serif);
  font-size: 1.05rem;
}
.domain-list span { color: var(--muted); font-size: 0.95rem; }

/* ---------- Tier chips & panels ---------- */
.tier-panels {
  display: grid;
  gap: 1.75rem;
  margin-top: 2rem;
}
@media (min-width: 900px) {
  .tier-panels { grid-template-columns: repeat(3, 1fr); }
}
.tier-panel {
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
}
.tier-panel--flagship {
  border: 1px solid var(--gold);
  box-shadow: 0 0 0 1px var(--gold);
}
.tier-chip {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  border: 1.5px solid var(--tier1-grey);
  color: var(--tier1-grey);
  margin-bottom: 1rem;
  width: fit-content;
}
.tier-chip--2 { border-color: var(--navy); color: var(--navy); }
.tier-chip--3 { border-color: var(--navy); color: var(--navy); background: #fbf7ea; }
.flagship-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy);
  background: var(--gold);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  width: fit-content;
}
.tier-panel h3 { margin-bottom: 0.75rem; }
.tier-panel .tier-desc { color: var(--muted); margin-bottom: 1.25rem; }
.tier-panel h4 {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}
.tier-panel ul {
  list-style: none;
  color: var(--ink);
  margin-bottom: 1rem;
}
.tier-panel ul li {
  padding-left: 1.1rem;
  position: relative;
  margin-bottom: 0.4rem;
}
.tier-panel ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 6px;
  height: 6px;
  background: var(--gold);
}
.tier-panel .tier-signal {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--hairline);
  font-style: italic;
  color: var(--navy);
}

/* Comparison table */
.table-scroll {
  overflow-x: auto;
  margin-top: 2rem;
}
.comparison-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  background: var(--white);
}
.comparison-table th, .comparison-table td {
  border: 1px solid var(--hairline);
  padding: 0.85rem 1rem;
  text-align: left;
  font-size: 0.95rem;
}
.comparison-table th {
  font-family: var(--font-serif);
  color: var(--navy);
  background: var(--off-white);
}
.comparison-table td.center, .comparison-table th.center { text-align: center; }
.tick { color: var(--navy); font-weight: 700; }
.dash { color: var(--muted); }

/* CTA band */
.cta-band {
  background: var(--white);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  text-align: center;
  padding-block: 3rem;
}
.cta-band h2 { margin-bottom: 1.25rem; }

/* ---------- Register ---------- */
.register-controls {
  margin-top: 2rem;
  margin-bottom: 1.5rem;
}
.register-controls label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.register-controls input {
  width: 100%;
  max-width: 420px;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  font-size: 1rem;
  background: var(--white);
}

.register-table-wrap { display: none; }
.register-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
}
.register-table th, .register-table td {
  border: 1px solid var(--hairline);
  padding: 0.85rem 1rem;
  text-align: left;
}
.register-table th {
  font-family: var(--font-serif);
  color: var(--navy);
  background: var(--off-white);
}
.status-active { color: var(--navy); font-weight: 600; }

.register-cards { display: grid; gap: 1rem; }
.register-card {
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.register-card dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1rem;
  margin-top: 0.5rem;
  font-size: 0.95rem;
}
.register-card dt { color: var(--muted); }
.register-card dd { margin: 0; }

.register-empty {
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
  margin-top: 2rem;
}
.register-empty svg { width: 56px; height: 56px; margin-inline: auto 1.25rem; }
.register-empty p { max-width: 46ch; margin-inline: auto; color: var(--muted); }
.register-empty p + p { margin-top: 0.75rem; }

.register-no-results {
  display: none;
  color: var(--muted);
  margin-top: 1rem;
}

/* ---------- Forms ---------- */
.form-field {
  margin-bottom: 1.4rem;
}
.form-field label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.4rem;
}
.form-field .required { color: var(--gold); }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  background: var(--white);
  color: var(--ink);
}
.form-field textarea { resize: vertical; min-height: 140px; }
.form-hint { font-size: 0.85rem; color: var(--muted); margin-top: 0.35rem; }

.form-status {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  display: none;
}
.form-status.is-success {
  display: block;
  background: #eef4ee;
  color: #234d29;
  border: 1px solid #cfe3cf;
}
.form-status.is-error {
  display: block;
  background: #fbeeee;
  color: #6b2323;
  border: 1px solid #e6c7c7;
}
.form-fallback {
  margin-top: 1rem;
  font-size: 0.95rem;
}

/* ---------- Independence statement / callout ---------- */
.callout {
  background: var(--white);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-block: 1.5rem;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: #c7cfd8;
  border-top: 2px solid var(--gold);
  padding-block: 3rem 2rem;
}
.footer-grid {
  display: grid;
  gap: 2rem;
}
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--white);
  text-decoration: none;
}
.footer-brand svg { width: 28px; height: 28px; }
.site-footer p { color: #c7cfd8; margin-top: 0.75rem; max-width: 40ch; }
.site-footer h4 {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #8fa0b3;
  margin-bottom: 0.9rem;
}
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 0.6rem; }
.site-footer a { color: #c7cfd8; text-decoration: none; }
.site-footer a:hover { color: var(--gold); }
.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid #274763;
  font-size: 0.85rem;
  color: #8fa0b3;
}

/* ---------- Scroll reveal (one tasteful use, home page cards) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}