:root {
  --ink: #101418;
  --paper: #f6f3ec;
  --card: #ffffff;
  --muted: #68717b;
  --line: #ded8cd;
  --accent: #be4b2b;
  --accent-dark: #8f321d;
  --blue: #205f78;
  --green: #28724f;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
}
a { color: inherit; }
img { display: block; max-width: 100%; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px clamp(18px, 4vw, 44px);
  background: rgba(246, 243, 236, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.brand {
  text-decoration: none;
  font-weight: 900;
  font-size: 1.18rem;
}
nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 18px;
  font-weight: 700;
}
nav a { text-decoration: none; }
.nav-button {
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
}

main {
  width: min(1160px, calc(100% - 36px));
  margin: 0 auto;
  padding: 34px 0 70px;
}
.hero {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 26px;
  align-items: end;
  padding: 34px 0 22px;
}
h1 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 5rem);
  line-height: .95;
  letter-spacing: 0;
}
h2 {
  margin: 0 0 18px;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1;
}
h3 { margin: 0 0 8px; }
.lead {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.12rem;
}
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  box-shadow: 0 14px 36px rgba(16, 20, 24, .08);
}
.rules-box {
  margin: 18px 0;
  padding: 18px;
  border-radius: 8px;
  border: 1px solid #e5c7bb;
  background: #fff2ec;
}
.rules-box h2 {
  margin-bottom: 8px;
  font-size: 1.25rem;
}
.rules-box ul {
  margin: 0;
  padding-left: 22px;
  color: var(--muted);
}
.rules-list {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}
.rules-list article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.rules-list p {
  margin: 0;
  color: var(--muted);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 24px 0;
}
.search {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}
textarea { min-height: 140px; resize: vertical; }
label { display: grid; gap: 7px; font-weight: 800; }
.check-row {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.check-row input {
  width: auto;
  margin-top: 4px;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.full { grid-column: 1 / -1; }

.btn, button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 17px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover, button:hover { background: var(--accent-dark); }
.danger {
  background: #9b1f1f;
}
.danger:hover {
  background: #711515;
}
.btn.secondary {
  background: var(--ink);
}
.btn.light {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.auction-card {
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(16,20,24,.07);
}
.auction-card img, .placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: linear-gradient(135deg, #e8e0d2, #cfd8d7);
}
.placeholder {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-weight: 900;
}
.card-body { padding: 18px; }
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: .92rem;
}
.price {
  margin: 12px 0;
  font-size: 1.5rem;
  font-weight: 950;
}
.countdown {
  display: inline-flex;
  margin: 8px 0;
  padding: 8px 10px;
  border-radius: 8px;
  background: #102f3b;
  color: #fff;
  font-weight: 950;
}
.countdown.large {
  font-size: 1.18rem;
  padding: 10px 13px;
}
.countdown.ended {
  background: #9b1f1f;
}
.badge {
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  background: #efe3d1;
  color: #5c3b1e;
  font-weight: 900;
  font-size: .78rem;
}
.badge.open { background: #dff1e7; color: var(--green); }
.badge.closed { background: #efe2e2; color: #8b2b2b; }

.auction-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
  gap: 24px;
  align-items: start;
}
.detail-image {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--line);
}
.image-gallery {
  display: grid;
  gap: 12px;
}
.thumb-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}
.thumb-grid a {
  display: block;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
}
.thumb-grid img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}
.bid-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}
.bid-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.notification-list {
  display: grid;
  gap: 14px;
}
.notification {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.notification.unread {
  border-color: #e5c7bb;
  background: #fff2ec;
}
.notification h2 {
  margin-bottom: 8px;
  font-size: 1.25rem;
}
.notification p {
  margin: 0 0 12px;
  color: var(--muted);
}
.flash {
  margin-bottom: 18px;
  padding: 14px 16px;
  border-radius: 8px;
  background: #e1f1e7;
  color: #174d34;
  font-weight: 800;
}
.flash.error { background: #f4dddd; color: #7b2020; }
.table-wrap { overflow-x: auto; }
.inline-form {
  display: inline-flex;
  margin: 3px 6px 3px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
th, td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
th { background: #f0eadf; }
.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 26px clamp(18px, 4vw, 44px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

@media (max-width: 850px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  nav { justify-content: flex-start; }
  .hero, .grid, .form-grid, .auction-detail { grid-template-columns: 1fr; }
  .thumb-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}