/* Linth site — shared chrome (every page links this after /tokens.css).
   Tokens come from design-system/tokens.css (single source, copied at build).
   WCAG AA: --ink-60 (3.9:1) and --ink-40 (2.3:1) fail on paper for text;
   secondary text uses a 75% ink mix (6.1:1) instead. Derived from the token,
   never a literal. */
:root { --ink-secondary: color-mix(in srgb, var(--ink) 75%, transparent); }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font-ui); letter-spacing: -0.01em; -webkit-font-smoothing: antialiased; }
a { color: var(--ink); text-decoration: none; }
::selection { background: var(--ink); color: var(--paper); }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 48px); }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.microlabel { font-family: var(--font-mono); font-size: 10px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-secondary); }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper); padding: 10px 16px; z-index: 100; }
.skip-link:focus { left: 0; }

/* Header / nav */
.nav-link { font-size: 13px; font-weight: 500; letter-spacing: -0.01em; color: var(--ink); background: none; border: none; cursor: pointer; padding: 8px 11px; border-radius: 6px; display: inline-flex; align-items: center; gap: 5px; font-family: var(--font-ui); }
.nav-link:hover { background: var(--hover); }
.nav-link.is-current { background: var(--active); }
.btn-primary { display: inline-block; background: var(--ink); color: var(--text-on-ink); font-size: 13.5px; font-weight: 500; letter-spacing: -0.01em; padding: 10px 18px; border-radius: var(--radius-l); }
.btn-primary:hover { background: color-mix(in srgb, var(--ink) 85%, black); }
.menu-panel { position: absolute; top: 100%; left: -8px; padding-top: 8px; z-index: 30; display: none; }
.menu-open .menu-panel { display: block; }
.menu-card { width: 318px; background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-l); box-shadow: var(--shadow-float); padding: 6px; }
.menu-item { display: block; padding: 9px 12px; border-radius: var(--radius-m); }
.menu-item:hover { background: var(--hover); }
.menu-item.is-current { background: var(--active); }
.menu-item .t { display: block; font-size: 13px; font-weight: 500; color: var(--ink); }
.menu-item .d { display: block; font-size: 12px; color: var(--ink-secondary); margin-top: 2px; line-height: 1.45; }
.footer-link { font-size: 13px; color: var(--ink-secondary); padding-block: 4px; }
.footer-link:hover { color: var(--ink); }
.mobile-link { font-size: 14px; font-weight: 500; padding: 7px 0; }
.mobile-link.is-current { background: var(--active); border-radius: var(--radius-m); padding-left: 8px; padding-right: 8px; margin-left: -8px; margin-right: -8px; }
#mobile-menu { display: none; border-top: 1px solid var(--hairline); background: var(--paper); padding: 16px clamp(20px, 5vw, 48px) 24px; flex-direction: column; gap: 2px; }
#mobile-menu.open { display: flex; }

/* In-page cross-links ("Read: <sibling page>") */
.read-link { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink); padding-block: 4px; }
.read-link:hover { text-decoration: underline; }

/* !important: the nav carries inline display styles; the breakpoint must win over them. */
@media (max-width: 880px) { .nav-desktop { display: none !important; } .nav-toggle { display: inline-flex !important; } }
@media (min-width: 881px) { .nav-toggle { display: none !important; } #mobile-menu { display: none !important; } }