:root {
  --bg: #f6f8fa;
  --card: #ffffff;
  --text: #16232e;
  --muted: #5d6b77;
  --line: #e2e7ec;
  --accent: #0b6e99;
  --accent-ink: #ffffff;
  --danger: #b42318;
  --ok-bg: #e7f6ec;
  --err-bg: #fdecea;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f171e; --card: #17222c; --text: #e6edf3; --muted: #9aa8b4;
    --line: #26343f; --accent: #3fa7d6; --accent-ink: #06121a;
    --danger: #f07167; --ok-bg: #173325; --err-bg: #3a1c1a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); }
main { max-width: 1100px; margin: 0 auto; padding: 0 16px 48px; }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  max-width: 1100px; margin: 0 auto; padding: 16px;
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); }
nav { display: flex; gap: 16px; align-items: center; }
nav a { text-decoration: none; }

.intro { padding: 24px 0 8px; }
.intro h1 { margin: 0 0 4px; font-size: clamp(1.6rem, 4vw, 2.2rem); letter-spacing: -0.01em; }
.intro p { margin: 0; color: var(--muted); }

.grid {
  display: grid; gap: 20px; margin-top: 24px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
}
.photo { position: relative; display: block; aspect-ratio: 4 / 3; background: var(--line); }
.photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.badge {
  position: absolute; top: 12px; left: 12px; background: var(--text); color: var(--bg);
  font-size: .8rem; font-weight: 600; padding: 3px 10px; border-radius: 999px;
}
.card.sold .photo img { filter: grayscale(1); opacity: .6; }
.body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.price { margin: 0; font-size: 1.25rem; font-weight: 700; }
.card.sold .price { color: var(--muted); text-decoration: line-through; }
.desc { margin: 0; white-space: pre-line; color: var(--text); flex: 1; overflow-wrap: anywhere; }

.btn {
  display: inline-block; text-align: center; text-decoration: none; cursor: pointer;
  background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent);
  padding: 10px 16px; border-radius: 8px; font: inherit; font-weight: 600;
}
.btn.small { padding: 6px 10px; font-size: .9rem; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
button.link { background: none; border: 0; color: var(--accent); font: inherit; cursor: pointer; padding: 0; }
form.inline { display: inline; margin: 0; }

.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin: 24px 0; display: flex; flex-direction: column; gap: 14px; max-width: 640px;
}
.panel.narrow { max-width: 380px; margin: 48px auto; }
.panel h1 { margin: 0; font-size: 1.4rem; }
label { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: .95rem; }
input[type=text], input[type=password], textarea {
  font: inherit; font-weight: 400; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg); color: var(--text); width: 100%;
}
input[type=file] { font: inherit; font-weight: 400; }
.preview { width: 100%; max-height: 320px; object-fit: contain; border-radius: 8px; background: var(--line); }
.row { display: flex; gap: 10px; }

.admin-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.admin-list li {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px;
}
.admin-list img { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; }
.admin-list .info { flex: 1; min-width: 160px; display: flex; flex-direction: column; }
.admin-list .info span { color: var(--muted); }
.admin-list li.sold img { filter: grayscale(1); opacity: .6; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

.flash { padding: 10px 14px; border-radius: 8px; margin: 16px 0 0; }
.flash.ok { background: var(--ok-bg); }
.flash.error { background: var(--err-bg); }
.empty { color: var(--muted); margin-top: 24px; }

footer { text-align: center; color: var(--muted); padding: 24px 16px 40px; font-size: .9rem; }