* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-sans); background: var(--bg); color: var(--text); line-height: 1.6; }
a, button { transition: color var(--motion-fast) ease, background-color var(--motion-fast) ease, filter var(--motion-fast) ease; }
*:focus-visible { outline: 3px solid color-mix(in oklab, var(--brand-primary) 70%, white); outline-offset: 2px; border-radius: 6px; }
a { color: var(--link); text-underline-offset: 2px; }
a:hover, a:focus-visible { color: var(--brand-primary); text-decoration: none; }
.container { max-width: var(--max-content); margin: 0 auto; padding: 0 var(--space-4); }
.header { position: sticky; top: 0; backdrop-filter: blur(8px); background: color-mix(in oklab, var(--bg) 80%, transparent); border-bottom: 1px solid rgba(255,255,255,.08); }
.nav { display: flex; gap: var(--space-4); padding: var(--space-3) 0; align-items: center; }
.nav a { text-decoration: none; color: var(--link); }
.nav a:hover, .nav a:focus-visible { color: var(--brand-primary); text-decoration: none; }
.logo { display: inline-flex; align-items: center; gap: var(--space-2); font-weight: 700; }
.logo svg { width: 28px; height: 28px; }
/* New: header logo image size */
.logo img { height: 120px; width: auto; display: block; }
.hero { padding: var(--space-12) 0 var(--space-8); }
.hero h1 { font-size: clamp(1.8rem, 3vw, 3rem); margin: 0 0 var(--space-4); }
.section { padding: var(--space-6) 0; }
.section h2, h1, h2, h3 { color: var(--brand-primary); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-4); }
.grid .span-all { grid-column: 1 / -1; }
.grid .subtitle { font-weight: 600; color: var(--brand-primary); margin-top: var(--space-2); }
.card { background: var(--surface); border-radius: var(--radius); padding: var(--space-6); box-shadow: var(--shadow); }
/* AIWorkers avatars same size as quotes */
.card .avatar { width: 144px; height: 144px; object-fit: cover; border-radius: 50%; border: 4px solid var(--brand-secondary); display: block; margin-bottom: var(--space-4); }
img[data-lightbox] { cursor: pointer; transition: box-shadow .15s, outline .15s; }
img[data-lightbox]:hover, img[data-lightbox]:focus-visible { box-shadow: 0 0 0 4px var(--brand-primary); outline: 2px solid var(--brand-primary); z-index: 1; }
.card .result { margin-top: var(--space-3); }
.card .result-label { color: var(--brand-primary); font-weight: 700; font-size: 0.95rem; line-height: 1.3; }
.card .result-value { margin: .25rem 0 0; color: var(--text); }
.btn { display: inline-block; background: var(--brand-accent); color: var(--brand-accent-contrast); padding: .7rem 1rem; border-radius: 999px; text-decoration: none; }
.btn:hover { filter: brightness(1.05); }
footer { border-top: 1px solid rgba(255,255,255,.08); padding: var(--space-6) 0; font-size: .9rem; color: var(--muted); }
footer .disclaimer { margin-top: var(--space-2); font-size: 0.85rem; color: var(--muted); }
.skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip-link:focus { position: static; width: auto; height: auto; background: var(--brand-primary); color: var(--brand-primary-contrast); padding: var(--space-2) var(--space-4); }
/* Hide theme toggle (per request) */
.theme-toggle { margin-left: auto; display: none; }

/* a11y utility */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* === AIEvolutio: nav fixes & responsive === */
.nav #nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-left: auto;
}
.nav #nav a {
  padding: .25rem .5rem;
  border-radius: 8px;
}
@media (max-width: 640px) {
  .nav { flex-wrap: wrap; align-items: center; }
  .nav #nav { width: 100%; margin-left: 0; gap: var(--space-2); }
  .nav #nav a { padding: .5rem .75rem; }
  .theme-toggle { margin-left: 0; }
}

/* Header logo: smaller on mobile for ergonomics */
@media (max-width: 640px) {
  .logo img { height: 72px; }
}

/* Figures (quotes and images) */
figure { margin: 0 0 var(--space-6); }
figure img { max-width: 100%; height: auto; border-radius: 12px; box-shadow: var(--shadow); }
figure.quote { display: grid; grid-template-columns: 144px auto; gap: var(--space-6); align-items: center; }
figure.quote img { width: 144px; height: 144px; object-fit: cover; border-radius: 50%; box-shadow: none; grid-row: 1; border: 4px solid var(--brand-secondary); }
/* Lightbox affordance */
img[data-lightbox] { cursor: zoom-in; }
img[data-lightbox]:hover, img[data-lightbox]:focus-visible { filter: drop-shadow(0 0 0 rgba(0,0,0,0)); outline: 3px solid color-mix(in oklab, var(--brand-primary) 70%, white); outline-offset: 3px; border-radius: 50%; }
figure.quote .quote-text { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: .25rem; min-width: 0; }
figure.quote blockquote { margin: 0; font-size: 1.1rem; font-style: italic; display: inline; }
figure.quote figcaption { margin: 0; color: var(--muted); font-size: .9rem; display: inline; }
@media (max-width: 480px) {
  figure.quote { grid-template-columns: 96px auto; gap: var(--space-4); }
  figure.quote img { width: 96px; height: 96px; }
}

/* Card images */
.card > img { width: 100%; height: auto; border-radius: 12px; margin-bottom: var(--space-4); }

/* Paragraph spacing only (full container width) */
.hero > p,
.section > div > p { max-width: none; margin: 0 0 var(--space-4); }

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* Social buttons row */
.social-row { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.social-row .btn { background: var(--brand-primary); color: var(--brand-primary-contrast); }

/* Scannable lists */
.list { padding-left: 1.25rem; margin: 0 0 var(--space-4); display: grid; gap: .5rem; }
.list li { list-style: none; position: relative; padding-left: 1rem; }
.list li::before { content: "•"; position: absolute; left: 0; color: var(--brand-secondary); font-weight: 700; }
.list-primary li::before { color: var(--brand-primary); }
.list-accent li::before { color: var(--brand-accent); }

@media (max-width: 640px) {
  /* mobile tweaks */
  .grid { gap: var(--space-3); }
  .hero { padding-top: var(--space-8); }
}

/* Workers: collapsible summaries */
details.worker { border: 1px solid rgba(255,255,255,.08); border-radius: 12px; padding: var(--space-3) var(--space-4); background: var(--surface); box-shadow: var(--shadow); margin: 0 0 var(--space-4); }
details.worker > summary { cursor: pointer; list-style: none; }
details.worker > summary::-webkit-details-marker { display: none; }
details.worker > summary { display: flex; gap: .5rem; align-items: baseline; }
details.worker > summary .hint, details.worker > summary .hint-open { margin-left: auto; font-size: .9rem; color: var(--muted); }
details.worker > summary .hint-open { display: none; }
details.worker[open] > summary .hint { display: none; }
details.worker[open] > summary .hint-open { display: inline; color: var(--brand-primary); }
details.worker > summary:focus-visible { outline: 3px solid color-mix(in oklab, var(--brand-primary) 70%, white); outline-offset: 4px; border-radius: 8px; }
/* Chevron indicator */
details.worker > summary::after { content: '▾'; margin-left: .5rem; color: var(--muted); transition: transform var(--motion-fast) ease, color var(--motion-fast) ease; }
details.worker > summary:hover::after, details.worker > summary:focus-visible::after { color: var(--brand-primary); }
details.worker[open] > summary::after { transform: rotate(-180deg); color: var(--brand-primary); }
details.worker[open] > summary { color: var(--brand-primary); }
details.worker .worker-body { display: grid; grid-template-columns: 144px auto; gap: var(--space-4); align-items: start; margin-top: var(--space-3); }
details.worker .worker-body .avatar { width: 144px; height: 144px; object-fit: cover; border-radius: 50%; border: 4px solid var(--brand-secondary); }
details.worker .worker-body .btn { margin-top: var(--space-2); }
@media (max-width: 480px) {
  details.worker .worker-body { grid-template-columns: 96px auto; }
  details.worker .worker-body .avatar { width: 96px; height: 96px; }
}

/* Lightbox */
.lightbox[hidden] { display: none; }
.lightbox { position: fixed; inset: 0; z-index: 9999; display: grid; place-items: center; padding: var(--space-6); }
.lightbox .lightbox-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.7); }
.lightbox img { max-width: min(90vw, 1024px); max-height: 85vh; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,.4); position: relative; z-index: 1; }
.lightbox .lightbox-close { position: absolute; top: 1rem; right: 1rem; z-index: 2; background: transparent; border: none; color: white; font-size: 2rem; line-height: 1; cursor: pointer; filter: drop-shadow(0 2px 8px rgba(0,0,0,.5)); }
.lightbox .lightbox-caption { position: absolute; bottom: 1rem; left: 50%; transform: translateX(-50%); color: white; background: rgba(0,0,0,.35); padding: .25rem .5rem; border-radius: 6px; font-size: .9rem; z-index: 2; max-width: 90vw; text-align: center; }

/* Contact form */
.contact-form { display: grid; gap: var(--space-4); max-width: 640px; background: var(--surface); padding: var(--space-6); border-radius: var(--radius); box-shadow: var(--shadow); }
.contact-form .field { display: grid; gap: .35rem; }
.contact-form .field-label { font-weight: 600; font-size: .9rem; color: var(--brand-primary); letter-spacing: .5px; text-transform: uppercase; }
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea { width: 100%; padding: .75rem .85rem; background: color-mix(in oklab, var(--surface) 85%, black); border: 1px solid rgba(255,255,255,.15); border-radius: 8px; color: var(--text); font: inherit; resize: vertical; min-height: 52px; }
.contact-form textarea { min-height: 140px; }
.contact-form input:focus-visible,
.contact-form textarea:focus-visible { outline: 3px solid color-mix(in oklab, var(--brand-primary) 70%, white); outline-offset: 2px; }
.contact-form .btn[type="submit"],
.contact-form button[type="submit"] { justify-self: start; }
.contact-form .form-status { margin: 0; font-size: .9rem; color: var(--muted); }
.contact-form .field-error { border-color: var(--brand-accent); animation: field-warn .4s; }
@keyframes field-warn { 0% { box-shadow: 0 0 0 0 var(--brand-accent); } 100% { box-shadow: 0 0 0 4px transparent; } }