:root {
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-text: #1c1f26;
  --color-muted: #6b7280;
  --color-border: #e3e5e9;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-ok: #16a34a;
  --radius: 10px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

[x-cloak] { display: none !important; }

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

.topnav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 20px;
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topnav__brand { font-weight: 600; white-space: nowrap; }

.topnav__tabs {
  display: flex;
  gap: 4px;
  flex: 1;
  overflow-x: auto;
}

.tab {
  padding: 8px 14px;
  border-radius: var(--radius);
  color: var(--color-muted);
  white-space: nowrap;
  font-size: 14px;
}

.tab:hover { background: var(--color-bg); color: var(--color-text); }

.tab--active {
  background: var(--color-accent);
  color: #fff;
}
.tab--active:hover { color: #fff; }

.topnav__right {
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
}

.settings-link { font-size: 14px; white-space: nowrap; }

.user-menu { position: relative; }

.user-menu__button {
  background: none;
  border: none;
  font: inherit;
  color: var(--color-text);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius);
}
.user-menu__button:hover { background: var(--color-bg); }

.user-menu__dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
  min-width: 160px;
  padding: 6px;
  display: flex;
  flex-direction: column;
}

.user-menu__dropdown a,
.user-menu__dropdown button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border-radius: calc(var(--radius) - 4px);
  border: none;
  background: none;
  font: inherit;
  color: var(--color-text);
  cursor: pointer;
}
.user-menu__dropdown a:hover,
.user-menu__dropdown button:hover { background: var(--color-bg); }

.page { max-width: 1100px; margin: 0 auto; padding: 32px 20px; }

.page:has(.iframe-wrap) { max-width: none; padding: 0; margin: 0; }
.iframe-wrap { height: calc(100vh - 56px); }
.iframe-wrap iframe { width: 100%; height: 100%; border: none; display: block; }

.stub { text-align: center; padding: 80px 20px; color: var(--color-muted); }
.stub h1 { color: var(--color-text); }
.stub__text { font-size: 15px; }

.login-wrap {
  min-height: calc(100vh - 40px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 340px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-card h1 { margin: 0 0 8px; font-size: 20px; }

.login-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--color-muted);
}

.login-card input {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  color: var(--color-text);
}

.btn {
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font: inherit;
  cursor: pointer;
}

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

.alert {
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 14px;
}

.alert--error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 20px;
}

.panel h2 { margin-top: 0; font-size: 16px; }

.form-grid {
  display: grid;
  gap: 14px;
  max-width: 420px;
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--color-muted);
}

.form-grid input {
  padding: 9px 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  color: var(--color-text);
}

.hint { font-size: 12px; color: var(--color-muted); margin: 0; }

.form-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.alert--ok { background: #f0fdf4; color: var(--color-ok); margin-top: 12px; }
.alert--error.panel-alert { margin-top: 12px; }
.panel .alert { margin-top: 12px; }

/* --- Себестоимость --- */

.tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  color: var(--color-text);
  display: block;
}

.tile--active { border-color: var(--color-accent); box-shadow: 0 0 0 1px var(--color-accent) inset; }
.tile--warn .tile__value { color: #d97706; }

.tile__value { font-size: 22px; font-weight: 700; }
.tile__label { font-size: 12px; color: var(--color-muted); margin-top: 2px; }

.catalog-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 220px;
  padding: 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
}

.toolbar__right { display: flex; gap: 8px; }

.btn--small { padding: 6px 12px; font-size: 13px; }

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

.costs-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.costs-table th, .costs-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-size: 14px;
}

.costs-table th a { color: var(--color-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }

.cost-row--missing { background: #fffbeb; }
.cost-row td { position: relative; }

.col-photo { width: 56px; }
.thumb { width: 56px; height: 56px; border-radius: 6px; object-fit: cover; display: block; }
.thumb--empty { background: var(--color-bg); border: 1px solid var(--color-border); }

.mono { font-family: ui-monospace, monospace; font-size: 13px; }

.col-cost { white-space: nowrap; }
.cost-value { cursor: pointer; text-decoration: underline dotted; }
.cost-edit-form { display: flex; gap: 6px; }
.cost-input { width: 110px; padding: 6px 8px; border: 1px solid var(--color-border); border-radius: 6px; font: inherit; }
.field-error { color: var(--color-error); font-size: 12px; margin-top: 4px; }

.chevron-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  color: var(--color-muted);
  transition: transform .15s;
  padding: 4px 8px;
}
.chevron-btn--open { transform: rotate(180deg); }

.history-panel {
  position: absolute;
  z-index: 5;
  top: 100%;
  left: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  padding: 8px;
  min-width: 320px;
}

.history-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.history-table th, .history-table td { padding: 6px 8px; text-align: left; }
.badge { font-size: 11px; background: #f0fdf4; color: var(--color-ok); padding: 2px 6px; border-radius: 4px; }

.preview-table { width: 100%; border-collapse: collapse; }
.preview-table th, .preview-table td { padding: 6px 10px; border-bottom: 1px solid var(--color-border); font-size: 13px; text-align: left; }
.row--error { background: #fef2f2; }
.ok { color: var(--color-ok); }
.err { color: var(--color-error); }

@media (max-width: 640px) {
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .costs-table thead { display: none; }
  .costs-table, .costs-table tbody, .costs-table tr, .costs-table td { display: block; width: 100%; }
  .costs-table tr { border: 1px solid var(--color-border); border-radius: var(--radius); margin-bottom: 10px; padding: 8px; }
  .costs-table td { border-bottom: none; padding: 4px 0; }
}

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 50;
}

.toast__item {
  background: var(--color-text);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius);
  margin-top: 8px;
  font-size: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}

/* --- Мой склад --- */

.subtabs { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 1px solid var(--color-border); }
.subtab { padding: 10px 16px; color: var(--color-muted); font-size: 14px; border-bottom: 2px solid transparent; }
.subtab:hover { color: var(--color-text); }
.subtab--active { color: var(--color-accent); border-bottom-color: var(--color-accent); font-weight: 600; }

.stock-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.stock-card {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 14px; cursor: pointer;
}
.stock-card:hover { border-color: var(--color-accent); }
.stock-card__name { font-weight: 600; font-size: 14px; margin-bottom: 2px; }
.stock-card__qty { font-size: 20px; font-weight: 700; margin-top: 6px; }
.stock-card__qty--zero { color: var(--color-error); }
.stock-card__warn { font-size: 12px; color: var(--color-warn, #d97706); margin-top: 6px; }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; padding: 20px;
}
.modal {
  background: var(--color-surface); border-radius: var(--radius);
  padding: 24px; max-width: 640px; width: 100%; max-height: 85vh; overflow-y: auto;
}
.modal__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.modal__head h2 { margin: 0; }
.modal__close { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--color-muted); }

.stock-add-form { margin: 14px 0; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 10px 14px; }
.stock-add-form summary { cursor: pointer; font-size: 14px; font-weight: 600; }
.stock-add-form form { margin-top: 12px; }

.batch-card { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 8px 12px; margin-bottom: 8px; }
.batch-card summary { cursor: pointer; font-size: 14px; }
.batch-card table { margin-top: 8px; }

.component-row--bottleneck { background: #fef2f2; }

@media (max-width: 640px) {
  .topnav { gap: 12px; padding: 0 12px; }
  .topnav__brand { display: none; }
  .page { padding: 20px 12px; }
}