:root {
  --bg: #f4f6f8;
  --surface: #fff;
  --border: #d8dee6;
  --text: #1a2332;
  --muted: #5c6b7f;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #b91c1c;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.site-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.site-header__user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: #e8eef8;
  color: #1e3a5f;
  font-size: 0.8rem;
}

.tag {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tag--muted {
  background: #eef1f5;
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  cursor: pointer;
  background: transparent;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--accent-hover);
}

.btn--ghost {
  border-color: var(--border);
  color: var(--text);
  background: var(--surface);
}

.inline-form {
  display: inline;
  margin: 0;
}

.toolbar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}

.filters__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
}

.filters__search {
  flex: 1 1 220px;
}

.filters__search input,
.filters__folder select,
.login-form input {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
}

.filters__folder select {
  min-width: 180px;
}

.filters__check {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  white-space: nowrap;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
  font-size: 0.92rem;
}

.catalog-tree {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.folder-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.folder-block__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  font-weight: 600;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
}

.folder-block__body {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.product-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.product-card--deleted {
  opacity: 0.72;
}

.product-card__head {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 0.85rem;
  padding: 0.85rem;
  align-items: start;
}

.product-card__photo {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #eef1f5;
}

.product-card__photo--empty {
  display: block;
}

.product-card__title {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.product-card__meta {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.product-card__meta-line {
  display: block;
  line-height: 1.35;
}

.product-card__desc {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.product-card__qty {
  text-align: right;
}

.qty-total {
  font-size: 1.35rem;
  font-weight: 700;
}

.mono-id {
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.82rem;
  word-break: break-all;
}

.variants-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  table-layout: fixed;
}

.variants-table th,
.variants-table td {
  padding: 0.45rem 0.85rem;
  border-top: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.variants-table th {
  background: #f8fafc;
  color: var(--muted);
  font-weight: 600;
}

.variants-table .col-variant-id {
  width: 38%;
}

.variants-table .col-size {
  width: 7rem;
}

.variants-table .col-qty {
  width: 5.5rem;
}

.variants-table .num {
  text-align: right;
}

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

.row--zero td.num {
  color: #9aa5b5;
}

.empty-state,
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  max-width: 420px;
  margin: 2rem auto;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1rem;
}

.login-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.alert {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  margin: 0.75rem 0;
}

.alert--error {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fecaca;
}

@media (max-width: 720px) {
  .product-card__head {
    grid-template-columns: 48px 1fr;
  }

  .product-card__qty {
    grid-column: 2;
    text-align: left;
  }
}