:root {
  --bg: #f4f6fb;
  --bg-accent: #eef1f7;
  --card: #ffffff;
  --border: #e3e7ef;
  --text: #1b2333;
  --muted: #607089;
  --accent: #2563eb;
  --accent-2: #06b6d4;
  --danger: #ef4444;
  --success: #22c55e;
  --shadow: 0 14px 28px rgba(16, 24, 40, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Futura", "Gill Sans", "Trebuchet MS", sans-serif;
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 45%),
    radial-gradient(circle at top right, rgba(6, 182, 212, 0.08), transparent 40%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-accent) 100%);
  color: var(--text);
  min-height: 100vh;
}

.app-shell {
  position: relative;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
}

.brand {
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}

.brand span {
  color: var(--accent);
}

.topbar nav {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}

.topbar a,
.link-button {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
}

.topbar a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transform: scaleX(0.6);
  transition: all 0.2s ease;
}

.topbar a:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.container {
  max-width: 1200px;
  margin: 32px auto;
  padding: 0 20px 48px;
}

.section-title {
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.card.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  align-items: center;
}

.card h1 {
  font-size: 2rem;
  margin: 0 0 8px;
}

.card h2 {
  margin: 0 0 10px;
}

.muted {
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.75rem;
  background: rgba(37, 99, 235, 0.08);
  color: var(--accent);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.stat {
  padding: 14px;
  background: rgba(37, 99, 235, 0.06);
  border-radius: 14px;
  border: 1px solid rgba(37, 99, 235, 0.12);
}

.stat strong {
  font-size: 1.4rem;
}

button {
  background: linear-gradient(120deg, var(--accent), #3b82f6);
  border: none;
  color: #fff;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 18px rgba(37, 99, 235, 0.18);
}

button.secondary {
  background: #fff;
  color: var(--accent);
  border: 1px solid rgba(37, 99, 235, 0.3);
  box-shadow: none;
}

button.danger {
  background: linear-gradient(120deg, #ef4444, #f97316);
  color: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  border-radius: 12px;
  overflow: hidden;
}

th, td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

th {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
  color: var(--muted);
  background: #f7f9fc;
}

.auth {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 32px 16px;
}

.auth-card {
  width: min(420px, 100%);
}

label {
  display: block;
  margin: 12px 0 6px;
  color: var(--muted);
}

input, select {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
}

.stack {
  display: grid;
  gap: 10px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.admin-actions {
  display: grid;
  gap: 12px;
}

.table-scroll {
  overflow-x: auto;
}

.table-scroll table {
  min-width: 620px;
}

@media (max-width: 900px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .topbar nav {
    flex-wrap: wrap;
    gap: 10px;
  }

  .hero {
    padding: 18px;
  }

  .accordion summary {
    flex-direction: column;
    align-items: flex-start;
  }
}

.error {
  color: var(--danger);
  font-weight: 600;
}

.success {
  color: var(--success);
  font-weight: 600;
}

.split {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

details.accordion {
  padding: 0;
  overflow: hidden;
}

details.accordion summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}

details.accordion summary::-webkit-details-marker {
  display: none;
}

details.accordion summary::after {
  content: "+";
  font-weight: 700;
  color: var(--muted);
}

details.accordion[open] summary::after {
  content: "–";
}

.accordion-body {
  padding: 18px 22px 22px;
}

.catalog-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.catalog-hero h1 {
  margin-bottom: 4px;
}

.catalog-access {
  display: grid;
  gap: 12px;
  background: linear-gradient(135deg, rgba(12, 24, 48, 0.05), rgba(12, 24, 48, 0.15));
  border: 1px dashed var(--border);
}

.catalog-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.catalog-search {
  flex: 1;
  min-width: 220px;
  position: relative;
}

.catalog-search input {
  padding-left: 40px;
}

.catalog-search span {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 0.9rem;
}

.catalog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.catalog-chip {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
  background: #fff;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.catalog-chip.active {
  background: #0f172a;
  color: #fff;
  border-color: #0f172a;
}

.catalog-grid {
  display: grid;
  gap: 18px;
}

.product-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  background: linear-gradient(145deg, #ffffff, #f7f9fc);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
}

.product-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.product-tag {
  background: rgba(15, 23, 42, 0.08);
  color: #0f172a;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.artifact-list {
  margin-top: 14px;
  display: grid;
  gap: 12px;
}

.artifact-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
}

.artifact-row small {
  color: var(--muted);
}

.artifact-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.empty-state {
  padding: 24px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 720px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .topbar nav {
    gap: 12px;
  }
}