:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #17202a;
  --muted: #697586;
  --line: #dde4ee;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --accent: #f6c343;
  --danger: #b42318;
  --good: #15803d;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  color: var(--text);
  line-height: 1;
}

.brand-logo {
  display: block;
  width: auto;
  height: 48px;
  max-width: min(300px, 72vw);
}

.brand-icon {
  display: inline-grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: .8rem;
  color: white;
  background: linear-gradient(135deg, var(--primary), #22c55e);
  box-shadow: var(--shadow);
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: .9rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 2rem auto 4rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.4fr .8fr;
  gap: 1rem;
  align-items: stretch;
  margin-bottom: 1.5rem;
}

.card, .hero-panel, .listing-card, .form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  box-shadow: var(--shadow);
}

.hero-panel { padding: clamp(1.3rem, 4vw, 2.4rem); }
.hero h1 { font-size: clamp(2rem, 5vw, 4rem); line-height: 1.03; margin: 0 0 1rem; }
.hero p { color: var(--muted); font-size: 1.08rem; margin: 0 0 1rem; }

.stats-card { padding: 1.4rem; display: grid; gap: .8rem; }
.stat { padding: .9rem; border-radius: .9rem; background: #f8fafc; border: 1px solid var(--line); }
.stat strong { display: block; font-size: 1.45rem; }
.stat span { color: var(--muted); font-size: .92rem; }

.filters { display: grid; grid-template-columns: 1.4fr 1fr auto; gap: .75rem; margin: 1rem 0 1.25rem; }

.listing-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.listing-card { overflow: hidden; display: flex; flex-direction: column; }
.listing-card.highlight { border-color: rgba(246,195,67,.8); box-shadow: 0 12px 32px rgba(246,195,67,.22); }
.image-placeholder, .listing-image { width: 100%; aspect-ratio: 4/3; object-fit: cover; background: linear-gradient(135deg, #e2e8f0, #f8fafc); display: grid; place-items: center; color: var(--muted); font-weight: 700; }
.listing-body { padding: 1rem; display: grid; gap: .55rem; }
.listing-title { font-weight: 800; color: var(--text); }
.price { font-size: 1.35rem; font-weight: 900; color: var(--primary-dark); }
.meta { color: var(--muted); font-size: .92rem; }

.badges { display: flex; flex-wrap: wrap; gap: .4rem; }
.badge { display: inline-flex; align-items: center; gap: .3rem; border-radius: 999px; padding: .25rem .55rem; background: #eef2f7; color: #334155; font-size: .78rem; font-weight: 700; }
.badge.good { background: #dcfce7; color: #166534; }
.badge.warn { background: #fef3c7; color: #92400e; }
.badge.danger { background: #fee2e2; color: #991b1b; }
.badge.primary { background: #ccfbf1; color: #134e4a; }

.button, button, input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  border: none;
  border-radius: .85rem;
  padding: .75rem 1rem;
  font-weight: 800;
  cursor: pointer;
  background: var(--primary);
  color: white;
  min-height: 2.7rem;
}
.button:hover, button:hover, input[type="submit"]:hover { background: var(--primary-dark); color: white; }
.button.secondary, button.secondary { background: #e2e8f0; color: #17202a; }
.button.secondary:hover, button.secondary:hover { background: #cbd5e1; color: #17202a; }
.button.danger, button.danger { background: var(--danger); }
.button.small { padding: .5rem .75rem; min-height: auto; font-size: .9rem; }
.full { width: 100%; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: .85rem;
  padding: .78rem .9rem;
  font: inherit;
  background: white;
}
textarea { min-height: 140px; resize: vertical; }
label { display: grid; gap: .35rem; font-weight: 750; }
.form-card { padding: 1.25rem; max-width: 720px; margin: 0 auto; }
.form-grid { display: grid; gap: 1rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.actions { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }

.flash { padding: .9rem 1rem; background: #ecfeff; color: #155e75; border: 1px solid #a5f3fc; border-radius: 1rem; margin-bottom: 1rem; }
.notice { padding: .9rem 1rem; background: #f8fafc; color: var(--muted); border: 1px solid var(--line); border-radius: 1rem; }
.warning { padding: .9rem 1rem; background: #fffbeb; color: #92400e; border: 1px solid #fde68a; border-radius: 1rem; }

.detail-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 1rem; align-items: start; }
.detail-card { padding: 1.2rem; }
.detail-image { width: 100%; border-radius: 1rem; aspect-ratio: 4/3; object-fit: cover; background: #e2e8f0; }

.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; align-items: start; }
.section { padding: 1.1rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .75rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: .88rem; }

.site-footer { color: var(--muted); text-align: center; padding: 2rem 1rem; border-top: 1px solid var(--line); background: white; }

.reward-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.reward-card { padding: 1rem; border: 1px solid var(--line); border-radius: 1rem; background: #fff; }


.start-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: radial-gradient(circle at top left, rgba(34, 197, 94, .10), transparent 34%), var(--bg);
}

.start-login-box {
  width: min(430px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  box-shadow: var(--shadow);
  padding: clamp(1.3rem, 5vw, 2rem);
  display: grid;
  gap: 1rem;
}

.start-logo {
  display: block;
  width: min(300px, 100%);
  height: auto;
  margin: 0 auto .5rem;
}

.start-login-box h1 {
  margin: 0;
  text-align: center;
  font-size: 1.55rem;
}

.start-note {
  margin: -.4rem 0 .2rem;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 850px) {
  .hero, .detail-grid, .dashboard-grid, .two-col, .filters, .reward-options { grid-template-columns: 1fr; }
  .listing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-header nav { justify-content: flex-start; }
}

@media (max-width: 560px) {
  .brand-logo { height: 42px; }
  .listing-grid { grid-template-columns: 1fr; }
  .container { width: min(100% - 1rem, 1120px); margin-top: 1rem; }
  .hero h1 { font-size: 2rem; }
}

.detail-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.detail-title-row h1 {
  margin-bottom: .3rem;
}

.image-gallery-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: .55rem;
  margin: .75rem 0 1rem;
}

.image-gallery-strip img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: .8rem;
  border: 1px solid var(--line);
  background: #f8fafc;
}

.image-manager-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.image-manager-item {
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: .6rem;
  background: #fff;
  display: grid;
  gap: .6rem;
}

.image-manager-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: .75rem;
  background: #f8fafc;
}

input[type="file"] {
  padding: .65rem;
}