:root {
  --bg-a: #f5efe6;
  --bg-b: #d8f0ff;
  --ink: #1c1c1c;
  --muted: #5c5c5c;
  --card: rgba(255, 255, 255, 0.8);
  --accent: #ff6a3d;
  --line: rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 0% 0%, var(--bg-b), transparent 45%),
    radial-gradient(circle at 100% 100%, #ffe8d2, transparent 40%),
    linear-gradient(135deg, var(--bg-a), #f6f3ee);
}

.shell {
  width: min(900px, 92vw);
  margin: 3rem auto;
}

.header h1 {
  margin: 0.2rem 0 1.25rem;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  letter-spacing: -0.02em;
}

.eyebrow {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  color: var(--muted);
  font-size: 0.85rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.2rem;
  backdrop-filter: blur(8px);
  box-shadow: 0 20px 30px rgba(0, 0, 0, 0.06);
}

.filter-wrap {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
}

.filter-label {
  font-size: 0.9rem;
  color: var(--muted);
}

.filter-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.85);
  padding: 0.65rem 0.75rem;
  font: inherit;
  color: var(--ink);
}

.filter-input:focus {
  outline: 2px solid rgba(255, 106, 61, 0.35);
  outline-offset: 1px;
}

.list {
  display: grid;
  gap: 0.8rem;
}

.item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.7);
}

.item h2 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  word-break: break-all;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.7rem;
}

a.btn {
  text-decoration: none;
  color: #111;
  border: 1px solid #111;
  border-radius: 999px;
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
}

a.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.qr-wrap {
  display: grid;
  justify-items: center;
  gap: 0.8rem;
  text-align: center;
}

.qr {
  width: min(90vw, 320px);
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem;
  background: white;
}

.qr svg {
  display: block;
  width: 100%;
  height: 100%;
}

.hint,
.error {
  font-size: 0.95rem;
  color: var(--muted);
}

.error {
  color: #8f1d1d;
}

.hidden {
  display: none;
}

@media (max-width: 640px) {
  .shell {
    margin: 1.5rem auto;
  }

  .card {
    padding: 1rem;
  }
}