:root {
  --ink: #000;
  --muted: rgba(0, 0, 0, 0.3);
  --soft: rgba(0, 0, 0, 0.55);
  --sub: rgba(0, 0, 0, 0.4);
  --tile: rgba(0, 0, 0, 0.05);
  --bg: #fff;
  --side: 400px;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.45 "Geist", ui-sans-serif, system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

p, h1, h2, h3 { margin: 0; }

a { color: inherit; text-decoration: none; transition: color .2s; }

.muted, .muted a, nav a { color: var(--muted); }
.muted a:hover, nav a:hover, nav a.strong { color: var(--ink); }

/* Sidebar */
.side {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 32px;
}

.side-head { display: flex; justify-content: space-between; align-items: flex-start; }
.side-head h1 { font-size: inherit; font-weight: 500; letter-spacing: -0.01em; line-height: 1.2; }
.side-head .muted { font-weight: 500; letter-spacing: 0.02em; margin-top: 4px; }

nav { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }

.side-body { display: flex; flex-direction: column; gap: 20px; flex-grow: 1; }

.side footer { font-size: 12px; line-height: 1.6; color: var(--sub); }

/* Content */
main {
  display: flex;
  flex-direction: column;
  gap: 56px;
  padding: 40px;
}

section { display: flex; flex-direction: column; gap: 16px; scroll-margin-top: 32px; }
section h2 { font-size: 14px; font-weight: 500; }
section h2 .muted { font-weight: 400; margin-left: 4px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 32px;
  align-items: start;
}

.card { display: flex; flex-direction: column; gap: 10px; }

.tile {
  aspect-ratio: 16 / 10;
  padding: 10px;
  background: var(--tile);
  transition: opacity .2s;
}
.tile img, .tile .blank {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  border: 1px solid rgba(0, 0, 0, 0.04);
  background: #fff;
}
.tile img.center { object-position: center; }
.tile .blank {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  color: rgba(0, 0, 0, 0.35);
}

.meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.meta > div { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.meta h3 { font-size: 14px; font-weight: 500; }
.sub { font-family: var(--mono); font-size: 12px; color: var(--sub); }

.cta {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--muted);
  transition: color .15s;
}
.cta svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 20;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.desc { font-size: 13px; line-height: 1.45; color: var(--soft); }

.card:hover .tile { opacity: .6; }
.card:hover .cta { color: var(--ink); }
.card:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }

/* Phone */
@media (max-width: 767px) {
  body { font-size: 14px; }
  .side { padding: 16px; }
  main { padding: 8px 16px 40px; gap: 48px; }
}

/* Tablet and up: fixed sidebar like deadsimplesites.com */
@media (min-width: 768px) {
  :root { --side: 340px; }
  .side {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--side);
    overflow-y: auto;
  }
  main { margin-left: var(--side); }
}

@media (min-width: 1200px) {
  :root { --side: 400px; }
}

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