@font-face {
  font-family: "Hand of Jen";
  src: url("fonts/hand-of-jen.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #ffffff;
  --ink: #111111;
  --muted: #9a9a9a;
  --faint: #e4e4e4;
  --sidebar-w: 232px;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --hand: "Hand of Jen", "SF Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { background: var(--bg); }

body {
  font-family: var(--hand);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

/* ---------- sidebar ---------- */

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  padding: 24px 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--bg);
  z-index: 10;
}

.brand { line-height: 1.25; }

.site-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.byline { color: var(--muted); }

.byline a { color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--faint); }

.byline a:hover { color: var(--ink); border-bottom-color: var(--ink); }

/* pages: inline row */
.pages { display: flex; gap: 14px; }

.nav-link {
  color: var(--muted);
  text-decoration: none;
  transition: color 120ms ease;
}

.nav-link:hover, .nav-link.is-here { color: var(--ink); }

.search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 6px;
}

.search-icon { color: var(--muted); font-size: 12px; }

#search {
  border: 0;
  outline: 0;
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: transparent;
}

#search::placeholder { color: var(--muted); }

/* collapsible filter groups */
.filter-group { border-top: 1px solid var(--faint); padding-top: 12px; }

.group-toggle {
  display: flex;
  align-items: baseline;
  gap: 8px;
  width: 100%;
  border: 0;
  background: none;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  text-align: left;
}

.group-title { font-weight: 700; }

.group-value {
  color: var(--muted);
  margin-left: auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
}

.group-chev { color: var(--muted); width: 10px; text-align: center; }
.group-chev::before { content: "+"; }
.filter-group.open .group-chev::before { content: "\2013"; }

.filter-list { list-style: none; }

.filter-group:not(.open) .filter-list { display: none; }

.filter-group .filter-list { margin-top: 8px; }

.filter-list li { margin-bottom: 3px; }

.filter-btn, .sort-btn {
  border: 0;
  background: none;
  font: inherit;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  text-align: left;
  transition: color 120ms ease;
}

.filter-btn:hover, .sort-btn:hover { color: var(--ink); }

.filter-btn.is-active, .sort-btn.is-active { color: var(--ink); }

.sidebar-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
}

.count { color: var(--muted); }

/* ---------- grid ---------- */

.grid {
  margin-left: var(--sidebar-w);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  padding: 28px 40px 80px;
  column-gap: 20px;
  row-gap: 40px;
}

.mug {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}

.mug-img-wrap {
  height: 140px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mug img {
  max-width: 62%;
  max-height: 84%;
  object-fit: contain;
  mix-blend-mode: multiply; /* white product shots melt into the page */
  transition: transform 200ms ease;
}

.mug:hover img { transform: scale(1.045); }

.mug-meta {
  text-align: center;
  opacity: 0;
  transform: translateY(2px);
  transition: opacity 150ms ease, transform 150ms ease;
}

.mug:hover .mug-meta { opacity: 1; transform: none; }

.mug-name { color: var(--ink); }

.mug-brand, .mug-price { color: var(--muted); }

.empty {
  grid-column: 1 / -1;
  color: var(--muted);
  padding-top: 40px;
}

/* ---------- small screens ---------- */

@media (max-width: 720px) {
  .sidebar {
    position: static;
    width: auto;
    gap: 20px;
  }
  .sidebar-footer { margin-top: 0; }
  .grid {
    margin-left: 0;
    padding: 8px 20px 60px;
    grid-template-columns: repeat(2, 1fr);
    row-gap: 40px;
  }
  .mug-img-wrap { height: 140px; }
  .mug-meta { opacity: 1; transform: none; }
}