:root {
  --bg0: #0c1210;
  --bg1: #15201a;
  --ink: #e8f0ea;
  --muted: #8fa396;
  --line: rgba(232, 240, 234, 0.12);
  --accent: #3dd68c;
  --accent-ink: #062116;
  --warn: #e8c47a;
  --radius: 14px;
  --pad: 1rem;
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Instrument Serif", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg0);
}

body {
  position: relative;
  padding: 0 0 2.5rem;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 80% at 10% -10%, rgba(61, 214, 140, 0.22), transparent 55%),
    radial-gradient(90% 60% at 100% 0%, rgba(90, 140, 120, 0.18), transparent 50%),
    linear-gradient(180deg, var(--bg1), var(--bg0) 55%);
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: calc(0.75rem + env(safe-area-inset-top)) var(--pad) 0.5rem;
}

.brand {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.6rem, 5vw, 2rem);
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.ghost {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(12, 18, 16, 0.35);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.ghost:focus-visible,
.btn:focus-visible,
.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.app {
  padding: 0.75rem var(--pad) 1.5rem;
  max-width: 40rem;
  margin: 0 auto;
}

.muted {
  color: var(--muted);
  margin: 1rem 0;
}

.err {
  color: var(--warn);
  margin: 1rem 0;
}

.hero-line {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
  max-width: 28ch;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.card {
  display: block;
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  background: rgba(21, 32, 26, 0.55);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 1rem 1.05rem;
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover,
.card:active {
  border-color: rgba(61, 214, 140, 0.45);
  transform: translateY(-1px);
}

.card h2 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.75rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

.detail-back {
  margin: 0 0 1rem;
}

.detail h1 {
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: clamp(1.7rem, 6vw, 2.2rem);
  font-weight: 400;
  line-height: 1.15;
}

.detail .price {
  margin: 0 0 1rem;
  color: var(--accent);
  font-weight: 700;
}

.detail .body {
  margin: 0 0 1.25rem;
  color: var(--muted);
  line-height: 1.55;
  white-space: pre-wrap;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
}

.tags li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 12px;
  padding: 0.85rem 1rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  display: block;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.req {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .card {
    transition: none;
  }
}