/* =====================================================================
   System ζ — shared styles for the preview's static legal pages
   (/legal/privacy, /legal/terms, /legal/refund). A self-contained subset
   of the tokens + typography inlined in index.html. The preview is a
   throwaway holding page, so a little duplication here is intentional.
   ===================================================================== */
:root {
  --font-zeta-display: 'Fraunces';
  --font-zeta-body: 'Hanken Grotesk';
  --font-zeta-mono: 'JetBrains Mono';
}

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

.system-zeta {
  /* ============ LIGHT MODE (default) ============ */
  --zeta-bg:           #FBF7F2;
  --zeta-bg-elev:      #FFFDF8;
  --zeta-ink:          #2A1218;
  --zeta-ink-soft:     #5D2A3A;
  --zeta-ink-quiet:    #8A6470;
  --zeta-rule:         #E8D9CE;
  --zeta-accent:        #FFD9A8;
  --zeta-accent-deep:   #B87C3A;
  --zeta-grain-opacity: 0.34;
  --zeta-grain-blend:   multiply;

  background: var(--zeta-bg);
  color: var(--zeta-ink);
  font-family: var(--font-zeta-body), -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  font-feature-settings: 'ss01', 'cv01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

@media (prefers-color-scheme: dark) {
  .system-zeta {
    /* ============ DARK MODE ============ */
    --zeta-bg:           #2A1218;
    --zeta-bg-elev:      #361A22;
    --zeta-ink:          #F1E2D6;
    --zeta-ink-soft:     #E8C9B0;
    --zeta-ink-quiet:    rgba(255, 226, 188, 0.62);
    --zeta-rule:         rgba(241, 226, 214, 0.08);
    --zeta-accent:        #FFD9A8;
    --zeta-accent-deep:   #F5BE7E;
    --zeta-grain-opacity: 0.24;
    --zeta-grain-blend:   screen;
  }
}

/* Paper grain overlay — fixed pseudo-element, no layout cost. */
.system-zeta-grain { position: relative; isolation: isolate; }
.system-zeta-grain::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: var(--zeta-grain-opacity);
  mix-blend-mode: var(--zeta-grain-blend);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 240 240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.36 0 0 0 0 0.16 0 0 0 0 0.22 0 0 0 0.045 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ============ TYPOGRAPHY ============ */
.zeta-display {
  font-family: var(--font-zeta-display), 'Times New Roman', serif;
  font-weight: 400;
  font-feature-settings: 'ss01', 'liga', 'dlig', 'kern';
  font-optical-sizing: auto;
  letter-spacing: -0.022em;
}
.zeta-mono {
  font-family: var(--font-zeta-mono), ui-monospace, SFMono-Regular, Menlo, monospace;
}
.zeta-eyebrow {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--zeta-ink-quiet);
}

/* ============ LAYOUT ============ */
.page {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}
@media (min-width: 768px) { .page { padding: 3rem 2rem 5rem; } }

.masthead {
  display: flex;
  align-items: center;
  padding-bottom: 1.5rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--zeta-rule);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: inherit;
}
.brand svg {
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 4px 14px rgba(93, 42, 58, 0.35));
  flex: none;
}
.brand .wordmark {
  font-family: var(--font-zeta-display), serif;
  font-size: 20px;
  line-height: 1;
  letter-spacing: -0.01em;
}

.legal h1 {
  margin: 0.6rem 0 0.6rem;
  font-size: clamp(34px, 4.5vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--zeta-ink);
}
.legal .updated {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--zeta-ink-quiet);
}
.legal-body {
  margin-top: 2.2rem;
  font-size: 16px;
  line-height: 1.72;
  color: var(--zeta-ink-soft);
}
.legal-body h2 {
  font-family: var(--font-zeta-display), serif;
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--zeta-ink);
  margin: 2.2rem 0 0;
}
.legal-body p { margin: 1rem 0 0; }
.legal-body ul { margin: 0.9rem 0 0; padding-left: 1.25rem; }
.legal-body li { margin-top: 0.4rem; }
.legal-body a { color: var(--zeta-ink); text-decoration: underline; }
.legal-body strong { color: var(--zeta-ink); font-weight: 600; }
.legal-body em { font-style: italic; }
.legal-body .address {
  font-family: var(--font-zeta-mono), monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--zeta-ink-soft);
}

.legal-footer {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--zeta-rule);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 1.4rem;
  font-size: 12px;
}
.legal-footer nav { display: inline-flex; flex-wrap: wrap; gap: 0.7rem 1.2rem; }
.legal-footer a {
  color: var(--zeta-ink-quiet);
  text-decoration: none;
  transition: color 200ms ease;
}
.legal-footer a:hover { color: var(--zeta-ink); }
.legal-footer .copy { color: var(--zeta-ink-quiet); font-family: var(--font-zeta-mono), monospace; }