/* ========================================
   HAND Protocol Archive
   Page-specific styles — extends foundation-campaign tokens
   ======================================== */

/* The archive page reads as a quieter, document-like surface.
   Background and text colors override foundation-campaign defaults
   so this page feels deliberately archival. */
body.legacy {
  background: var(--color-bg-warm);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.65;
}

.container--narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
@media (min-width: 768px) {
  .container--narrow { padding: 0 var(--space-2xl); }
}

/* ---- Top bar (replaces main nav) ---- */
.legacy-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 248, 241, 0.85);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.legacy-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: var(--space-md);
}
.legacy-bar__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}
.legacy-bar__back svg { transition: transform var(--transition-fast); }
.legacy-bar__back:hover { color: var(--color-text); }
.legacy-bar__back:hover svg { transform: translateX(-2px); }
.legacy-bar__stamp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  font-weight: 600;
  font-family: var(--font-mono);
}
.legacy-bar__stamp svg { opacity: 0.5; }

/* ---- Hero ---- */
.legacy-hero {
  padding: var(--space-4xl) 0 var(--space-2xl);
  position: relative;
}
.legacy-hero__eyebrow {
  display: inline-block;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}
.legacy-hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
  color: var(--color-text);
  margin: 0 0 var(--space-lg);
  font-family: 'Source Serif 4', Georgia, serif;
  font-style: italic;
}
.legacy-hero__lede {
  font-size: 1.1875rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 60ch;
  margin: 0 0 var(--space-2xl);
}
.legacy-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  margin: 0;
}
.legacy-hero__meta-item dt {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  font-weight: 700;
  margin-bottom: 2px;
}
.legacy-hero__meta-item dd {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

/* ---- Archive items ---- */
.legacy-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.legacy-item {
  background: var(--color-bg);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.legacy-item:hover {
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.06);
  transform: translateY(-1px);
}
.legacy-item__head {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  align-items: flex-start;
}
.legacy-item__num {
  font-family: 'Source Serif 4', Georgia, serif;
  font-style: italic;
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  margin-top: -2px;
}
.legacy-item__heading { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.legacy-item__label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  font-weight: 700;
}
.legacy-item__title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0;
  line-height: 1.2;
}
.legacy-item__title code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-bg-alt);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-text);
}
.legacy-item__when {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 4px;
  font-family: var(--font-mono);
}
.legacy-item__body {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0 0 var(--space-lg);
}
.legacy-item__sections {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.legacy-item__sections li {
  font-size: 0.75rem;
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}
.legacy-item__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}
.legacy-item__path {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-left: auto;
}
.legacy-item__path code {
  background: transparent;
  padding: 0;
}

/* ---- Note / closing ---- */
.legacy-note {
  background: var(--color-bg-warm-tint);
  border: 1px solid rgba(217, 119, 6, 0.18);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}
.legacy-note__eyebrow {
  display: inline-block;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}
.legacy-note h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--color-text);
  margin: 0 0 var(--space-md);
}
.legacy-note p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.65;
  margin: 0 0 var(--space-md);
}
.legacy-note p:last-of-type { margin-bottom: var(--space-lg); }
.legacy-note a {
  color: var(--color-accent);
  font-weight: 600;
  border-bottom: 1px solid rgba(217, 119, 6, 0.25);
  transition: border-color var(--transition-fast);
}
.legacy-note a:hover { border-bottom-color: var(--color-accent); }
.legacy-note__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ---- Footer ---- */
.legacy-footer {
  margin-top: var(--space-4xl);
  padding: var(--space-xl) 0;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}
.legacy-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.legacy-footer__row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.legacy-footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
  font-size: 0.8125rem;
}
.legacy-footer__contact a {
  color: var(--color-accent);
  border-bottom: 1px solid rgba(217, 119, 6, 0.25);
  transition: border-color 150ms ease;
}
.legacy-footer__contact a:hover {
  border-bottom-color: var(--color-accent);
}

/* Mobile tuning */
@media (max-width: 640px) {
  .legacy-hero { padding: var(--space-3xl) 0 var(--space-xl); }
  .legacy-hero__meta { flex-direction: column; gap: var(--space-md); }
  .legacy-item { padding: var(--space-lg); }
  .legacy-item__head { gap: var(--space-md); }
  .legacy-item__num { font-size: 2rem; }
  .legacy-item__title { font-size: 1.25rem; }
  .legacy-item__path { margin-left: 0; width: 100%; }
  .legacy-note { padding: var(--space-lg); }
}

/* ---- Reduced-motion override (legacy surface) ---- */
@media (prefers-reduced-motion: reduce) {
  .legacy-item:hover,
  .legacy-bar__back:hover {
    transform: none !important;
  }
  .legacy-bar__back:hover svg {
    transform: none !important;
  }
}