/* Neutral, light-only front door for kopplix.nl; same look as the previous hub page. */
:root {
  --ink: #171717;
  --muted: #525252;
  --eyebrow: #6b6b6b;
  --line: #e5e5e5;
  --soft: #fafafa;
  --page: #ffffff;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.wrap { max-width: 72rem; margin: 0 auto; padding: 0 16px; }
@media (min-width: 640px) { .wrap { padding: 0 24px; } }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 4px; }

.skip-link { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 12px; z-index: 10; }
.skip-link:focus { left: 8px; }

.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { padding-top: 24px; padding-bottom: 24px; }
.wordmark { font-weight: 700; font-size: 1.125rem; letter-spacing: 0.18em; text-decoration: none; }

.eyebrow { display: block; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.2em; color: var(--eyebrow); }
.intro { padding-top: 6rem; padding-bottom: 5rem; }
@media (min-width: 640px) { .intro { padding-top: 8rem; } }
h1 { margin: 1.5rem 0 0; max-width: 48rem; font-size: clamp(2.25rem, 7vw, 3.75rem); line-height: 1.05; letter-spacing: -0.025em; font-weight: 700; }
.lead { margin: 1.5rem 0 0; max-width: 42rem; font-size: 1.0625rem; color: var(--muted); }
@media (min-width: 640px) { .lead { font-size: 1.125rem; } }

.apps { border-top: 1px solid var(--line); background: var(--soft); }
.apps .wrap { padding-top: 5rem; padding-bottom: 5rem; }
.section-title { margin: 0; font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.2em; color: var(--muted); }
.grid { display: grid; gap: 1.5rem; margin-top: 2.5rem; }
@media (min-width: 768px) { .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.card { display: flex; flex-direction: column; background: var(--page); border: 1px solid var(--line); border-radius: 1rem; padding: 2rem; transition: border-color 150ms ease; }
.card:hover { border-color: #a3a3a3; }
.card .eyebrow { min-height: 2.25rem; }
.card-title { display: flex; align-items: center; gap: 0.75rem; margin-top: 1rem; }
.card-title img { width: 2rem; height: 2rem; flex-shrink: 0; object-fit: contain; }
.card h2 { margin: 0; font-size: 1.5rem; line-height: 1.2; font-weight: 600; letter-spacing: -0.02em; }
.card p { margin: 1rem 0 0; font-size: 0.875rem; color: var(--muted); }
.card .highlight { margin-top: 0.75rem; margin-bottom: 2.5rem; font-weight: 700; color: var(--ink); }
.open { align-self: flex-start; margin-top: auto; display: inline-flex; align-items: center; gap: 0.5rem; border: 1px solid var(--line); border-radius: 999px; padding: 0.625rem 1.25rem; font-size: 0.875rem; font-weight: 500; text-decoration: none; transition: background 150ms ease; }
.open:hover { background: #f5f5f5; }

.site-footer { border-top: 1px solid var(--line); }
.site-footer .wrap { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.site-footer p { margin: 0; display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: var(--muted); }
.site-footer img { height: 0.75rem; width: auto; border: 1px solid var(--line); }

.not-found { padding-top: 6rem; padding-bottom: 6rem; }
.not-found .open { margin-top: 2rem; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }