/* ============================================================
   Sphragis — Landing Page Styles
   Design tokens echo the Flutter app: client/lib/app/theme/
   Austere diagrammatic + modernist. Charcoal + a single gold accent.
   No occult kitsch — workbench, not temple.
   ============================================================ */

/* 1. DESIGN TOKENS
   ============================================================ */
:root {
  --bg:            #14110c;   /* deep warm charcoal — night */
  --bg-surface:    #1b1710;
  --bg-card:       rgba(34, 28, 19, 0.55);
  --bg-card-hover: rgba(44, 36, 24, 0.7);
  --border:        rgba(232, 223, 210, 0.10);
  --border-subtle: rgba(232, 223, 210, 0.05);

  --gold:          #c8a878;   /* kSphragisGold */
  --gold-dark:     #a68860;   /* kSphragisGoldDark */
  --gold-soft:     rgba(200, 168, 120, 0.16);

  --text:          #e8dfd2;   /* warm bone */
  --subtext:       rgba(232, 223, 210, 0.62);
  --muted:         rgba(232, 223, 210, 0.34);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --serif: 'Spectral', Georgia, 'Times New Roman', serif;
  --mono:  'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

/* 2. RESET + BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }

a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--text); text-decoration: underline; }

/* 3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4 {
  font-family: var(--serif);
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text);
}

h1 { font-size: clamp(2.25rem, 5.5vw, 3.5rem); font-weight: 600; }
h2 { font-size: clamp(1.6rem, 4vw, 2.5rem); }
h3 { font-size: 1.2rem; font-weight: 600; }

p { color: var(--subtext); }

/* Mono is reserved for statements of intent, labels, the wordmark. */
.mono { font-family: var(--mono); }

/* 4. LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 88px 0; }

/* 5. COMPONENTS
   ============================================================ */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.15s;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); text-decoration: none; }

.btn-primary {
  background: var(--gold);
  color: #14110c;
}
.btn-primary:hover { background: var(--gold-dark); color: #14110c; }

.btn-outline {
  background: transparent;
  color: var(--subtext);
  border-color: var(--border);
}
.btn-outline:hover { color: var(--text); border-color: var(--gold); }

.btn-sm { padding: 9px 18px; font-size: 0.78rem; }

.btn-coming-soon {
  opacity: 0.5;
  cursor: default;
  pointer-events: none;
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: background 0.2s, border-color 0.2s;
}
.card:hover { background: var(--bg-card-hover); border-color: rgba(200,168,120,0.3); }

.card-step {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

.card h3 { margin-bottom: 10px; }
.card p { font-size: 0.95rem; line-height: 1.6; }

/* --- Sigil mark --- */
.sigil-mark { color: var(--gold); }
.sigil-mark svg { width: 100%; height: 100%; display: block; }

/* --- Site header --- */
.site-header {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(20, 17, 12, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.site-logo:hover { text-decoration: none; }

.logo-mark { width: 26px; height: 26px; }

.logo-name {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.22em;
}

.site-nav { display: none; gap: 30px; }

.nav-link {
  font-family: var(--mono);
  color: var(--subtext);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  transition: color 0.15s;
}
.nav-link:hover, .nav-link.active { color: var(--text); text-decoration: none; }

.header-cta { display: none; }

/* --- Badge / pill --- */
.badge {
  display: inline-block;
  font-family: var(--mono);
  padding: 5px 14px;
  border: 1px solid rgba(200, 168, 120, 0.32);
  border-radius: 99px;
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-soft);
}

/* 6. SECTION STYLES
   ============================================================ */

/* --- Hero --- */
.hero {
  padding: 80px 0 72px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

/* faint concentric ring backdrop, drawn in CSS — diagrammatic, not kitsch */
.hero::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 760px; height: 760px;
  transform: translate(-50%, -54%);
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 39%, rgba(200,168,120,0.06) 39.4%, transparent 40%),
    radial-gradient(circle, transparent 29%, rgba(200,168,120,0.05) 29.4%, transparent 30%),
    radial-gradient(circle, transparent 19%, rgba(200,168,120,0.04) 19.4%, transparent 20%);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }

.hero-sigil {
  width: 108px;
  height: 108px;
  margin: 0 auto 28px;
  color: var(--gold);
  filter: drop-shadow(0 0 24px rgba(200, 168, 120, 0.28));
}

.hero h1 { margin-bottom: 18px; }

.hero-steps {
  font-family: var(--mono);
  font-size: clamp(0.8rem, 2.4vw, 1rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 22px;
}
.hero-steps .sep { color: var(--muted); margin: 0 6px; }

.hero-tagline {
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  color: var(--subtext);
  margin-bottom: 38px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
  gap: 12px;
}

.cta-stack { display: flex; flex-direction: column; align-items: center; }
.cta-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-top: 6px;
}

/* --- The loop (feature cards) --- */
.loop { padding: 80px 0; border-top: 1px solid var(--border); }

.section-head { text-align: center; max-width: 560px; margin: 0 auto 48px; }
.section-head .badge { margin-bottom: 18px; }
.section-head h2 { margin-bottom: 14px; }
.section-head p { font-size: 1.05rem; }

.loop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* --- The seal (signature mechanic) --- */
.seal {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
}

.seal-split {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  text-align: center;
}

.seal-text { max-width: 520px; }
.seal-text .badge { margin-bottom: 20px; }
.seal-text h2 { margin-bottom: 16px; }
.seal-text p { font-size: 1.05rem; margin-bottom: 16px; }
.seal-text p:last-child { margin-bottom: 0; }

.seal-visual {
  flex-shrink: 0;
  width: 200px;
  height: 200px;
  color: var(--gold);
  opacity: 0.9;
}

/* --- Methods strip --- */
.methods { border-bottom: 1px solid var(--border); }

.methods-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.method-cell {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 18px;
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
}
.method-cell:hover { border-color: rgba(200,168,120,0.35); background: var(--bg-card); }

.method-glyph { width: 40px; height: 40px; margin: 0 auto 12px; color: var(--gold); }

.method-name {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--text);
}
.method-sub { font-size: 0.8rem; color: var(--muted); margin-top: 4px; }

/* --- Closing CTA --- */
.closing { text-align: center; }
.closing h2 { margin-bottom: 14px; }
.closing p { max-width: 480px; margin: 0 auto 30px; font-size: 1.05rem; }

/* --- Footer --- */
.site-footer { padding: 44px 0 56px; border-top: 1px solid var(--border); }

.footer-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 28px;
}
.footer-links a { font-family: var(--mono); color: var(--subtext); font-size: 0.8rem; letter-spacing: 0.03em; }
.footer-links a:hover { color: var(--text); text-decoration: none; }

.footer-meta {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  color: var(--muted);
  text-align: center;
}

/* 7. PROSE PAGES (privacy, terms, support)
   ============================================================ */
.prose {
  max-width: 720px;
  margin: 0 auto;
  padding: 44px 24px 80px;
}

.prose-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  padding: 12px 0;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: var(--subtext);
}
.prose-back:hover { color: var(--text); text-decoration: none; }

.prose h1 { font-size: clamp(1.6rem, 4vw, 2.25rem); margin-bottom: 8px; }

.prose-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 40px;
}

.prose h2 { font-size: 1.3rem; margin-top: 40px; margin-bottom: 12px; }
.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { padding-left: 24px; margin-bottom: 16px; color: var(--subtext); }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--gold); }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
.prose-fine { font-size: 0.85rem; color: var(--muted); }

/* Support page */
.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  max-width: 480px;
  margin: 40px auto 0;
}
.support-card h2 { margin-bottom: 12px; }
.support-card p { margin-bottom: 24px; }
.support-email {
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--gold);
  font-weight: 500;
}

/* 8. RESPONSIVE
   ============================================================ */
@media (min-width: 600px) {
  .methods-grid { grid-template-columns: repeat(5, 1fr); }
}

@media (min-width: 768px) {
  .site-nav { display: flex; }
  .header-cta { display: inline-flex; }
  .loop-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .seal-split { flex-direction: row; text-align: left; gap: 64px; justify-content: center; }
  .seal-text .badge { margin-left: 0; }
}

@media (min-width: 1024px) {
  .hero { padding: 104px 0 88px; }
  .card { padding: 36px 30px; }
}