:root {
  --page: #eceff4;
  --card: #fff;
  --ink: #0f1419;
  --muted: #5a6578;
  --vital: #1bc7a1;
  --hairline: rgba(15, 20, 25, 0.1);
  --font: 'Inter', system-ui, sans-serif;
  --display: 'Outfit', var(--font);
  --mono: 'IBM Plex Mono', monospace;
}

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

body {
  font-family: var(--font);
  background: var(--page);
  color: var(--ink);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

button { font-family: inherit; cursor: pointer; }

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.back { font-size: 14px; color: var(--muted); font-weight: 500; }

.tag {
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #0d8f74;
}

h1 {
  font-family: var(--display);
  font-size: clamp(1.75rem, 4vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 10px 0;
}

.lead { color: var(--muted); max-width: 54ch; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  align-items: center;
  margin-top: 24px;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: 14px;
}

.chips { display: flex; gap: 8px; flex-wrap: wrap; }

.chip {
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  background: var(--page);
  color: var(--muted);
}

.chip.active {
  background: #080a0f;
  border-color: #080a0f;
  color: #fff;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  margin-left: auto;
}

.variant-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.variant-card {
  background: var(--card);
  border: 2px solid transparent;
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  box-shadow: 0 1px 3px rgba(15, 20, 25, 0.06);
}

.variant-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(15, 20, 25, 0.08);
  border-color: rgba(27, 199, 161, 0.35);
}

.variant-frame {
  background: #dde2ea;
  padding: 16px;
  display: grid;
  place-items: center;
}

.variant-frame img {
  width: 100%;
  max-width: 200px;
  height: auto;
  border-radius: 8px;
  display: block;
  box-shadow: 0 8px 28px rgba(15, 20, 25, 0.12);
}

.variant-frame.circle img {
  border-radius: 50%;
}

.variant-meta {
  padding: 14px 16px 16px;
  border-top: 1px solid var(--hairline);
}

.variant-num {
  font-family: var(--mono);
  font-size: 10px;
  color: #0d8f74;
  font-weight: 500;
}

.variant-meta h3 {
  font-size: 14px;
  font-weight: 600;
  margin: 2px 0 4px;
}

.variant-meta p {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--vital);
  color: #041210;
}

.btn-sm {
  font-size: 12px;
  padding: 8px 12px;
}

.lightbox {
  border: none;
  padding: 0;
  border-radius: 20px;
  max-width: min(92vw, 520px);
  background: var(--card);
  box-shadow: 0 24px 80px rgba(15, 20, 25, 0.2);
}

.lightbox::backdrop {
  background: rgba(8, 10, 15, 0.72);
  backdrop-filter: blur(8px);
}

.lightbox-close {
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 2;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: rgba(15, 20, 25, 0.08);
  font-size: 22px;
  line-height: 1;
  color: var(--muted);
}

.lightbox-preview {
  padding: 24px 24px 0;
  display: grid;
  place-items: center;
  background: #dde2ea;
}

.lightbox-preview img {
  width: 100%;
  max-width: 360px;
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(15, 20, 25, 0.15);
}

.lightbox-preview.circle img {
  border-radius: 50%;
}

.lightbox-meta {
  padding: 20px 24px 24px;
}

.lightbox-num {
  font-family: var(--mono);
  font-size: 11px;
  color: #0d8f74;
}

.lightbox-meta h2 {
  font-family: var(--display);
  font-size: 1.35rem;
  margin: 4px 0 6px;
}

.lightbox-meta p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
}

@media (max-width: 600px) {
  .toggle { margin-left: 0; width: 100%; }
  .variant-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}