:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-text: #1f2430;
  --color-muted: #6b7280;
  --color-border: #e2e4e9;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-ok: #16a34a;
  --color-ok-bg: #f0fdf4;
  --color-warn: #d97706;
  --color-warn-bg: #fffbeb;
  --radius: 10px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
}

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

h1 {
  font-size: 22px;
  margin: 0 0 16px;
}

h2 {
  font-size: 16px;
  margin: 0 0 12px;
}

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

/* ---------- Навигация ---------- */

.topnav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
  padding: 0 20px;
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topnav__left {
  flex: 0 0 auto;
}

.topnav__brand {
  font-weight: 600;
  color: var(--color-text);
  font-size: 16px;
}

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

.topnav__tab {
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--color-muted);
  white-space: nowrap;
  font-size: 14px;
}

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

.topnav__tab--active {
  color: var(--color-accent);
  font-weight: 600;
}

.topnav__right {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

.topnav__settings {
  color: var(--color-muted);
  font-size: 14px;
  white-space: nowrap;
}

.topnav__user {
  position: relative;
}

.topnav__user-btn {
  background: none;
  border: none;
  font: inherit;
  color: var(--color-text);
  cursor: pointer;
  padding: 6px 8px;
  border-radius: var(--radius);
}

.topnav__user-btn:hover {
  background: var(--color-bg);
}

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

.topnav__menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 180px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
  display: flex;
  flex-direction: column;
  padding: 6px;
}

.topnav__menu a,
.topnav__menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--color-text);
  background: none;
  border: none;
  font: inherit;
  cursor: pointer;
}

.topnav__menu a:hover,
.topnav__menu button:hover {
  background: var(--color-bg);
}

.topnav__logout-form {
  margin: 0;
}

/* ---------- Разметка страницы ---------- */

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.page--center {
  max-width: none;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

/* ---------- Карточки ---------- */

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

.card--muted {
  background: var(--color-bg);
}

.table-card {
  padding: 0;
  overflow-x: auto;
}

.stub-card {
  text-align: center;
  padding: 60px 20px;
}

/* ---------- Формы ---------- */

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.field span {
  font-size: 13px;
  color: var(--color-muted);
}

.field input,
.field select {
  font: inherit;
  padding: 9px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-text);
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.field input:disabled {
  color: var(--color-muted);
  background: var(--color-bg);
}

.field small {
  font-size: 12px;
  color: var(--color-muted);
}

.stack {
  display: flex;
  flex-direction: column;
}

.stack--row {
  flex-direction: row;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}

.stack--row .field {
  margin-bottom: 0;
  min-width: 160px;
}

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

/* ---------- Кнопки ---------- */

.btn {
  font: inherit;
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

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

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

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

.btn--secondary {
  background: var(--color-surface);
}

.btn--small {
  padding: 5px 10px;
  font-size: 13px;
}

.btn--block {
  width: 100%;
}

/* ---------- Таблица ---------- */

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  text-align: left;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.table th {
  color: var(--color-muted);
  font-weight: 500;
  font-size: 13px;
}

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

/* ---------- Прочее ---------- */

.kv {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 16px;
  margin: 0;
}

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

.kv dd {
  margin: 0;
}

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

.form-error {
  background: var(--color-error-bg);
  color: var(--color-error);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 14px;
}

.form-success {
  background: var(--color-ok-bg);
  color: var(--color-ok);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 14px;
}

/* ---------- Вход ---------- */

.auth-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
}

.auth-card {
  width: 100%;
  max-width: 360px;
}

.auth-card__title {
  font-size: 18px;
  margin: 0 0 20px;
  text-align: center;
}

/* ---------- Тосты ---------- */

.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--color-text);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  max-width: 320px;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.2);
}

.toast--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Мобильная вёрстка ---------- */

@media (max-width: 720px) {
  .topnav {
    gap: 12px;
    padding: 0 12px;
  }

  .topnav__center {
    display: none;
  }

  .page {
    padding: 16px 12px 40px;
  }

  .stack--row {
    flex-direction: column;
    align-items: stretch;
  }

  .table thead {
    display: none;
  }

  .table, .table tbody, .table tr, .table td {
    display: block;
    width: 100%;
  }

  .table tr {
    border-bottom: 1px solid var(--color-border);
    padding: 10px 16px;
  }

  .table td {
    border-bottom: none;
    padding: 4px 0;
  }

  .table td[data-label]:not([data-label=""])::before {
    content: attr(data-label);
    display: block;
    font-size: 12px;
    color: var(--color-muted);
  }

  .cost-row__photo,
  .cost-row__chevron {
    display: none;
  }

  .cost-edit-form {
    flex-wrap: wrap;
  }

  .history-row td {
    padding: 0 0 10px;
  }
}

/* ---------- Плитки статистики (/costs) ---------- */

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

.stat-tile {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  color: var(--color-text);
}

.stat-tile__value {
  font-size: 22px;
  font-weight: 600;
}

.stat-tile__label {
  font-size: 13px;
  color: var(--color-muted);
}

.stat-tile--warn {
  background: var(--color-warn-bg);
  border-color: var(--color-warn);
}

.stat-tile--warn .stat-tile__value {
  color: var(--color-warn);
}

.stat-tile--active {
  outline: 2px solid var(--color-accent);
  outline-offset: -1px;
}

@media (max-width: 720px) {
  .stat-tiles {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- Панель поиска/фильтров (/costs) ---------- */

.catalog-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.catalog-status form {
  margin: 0;
}

.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.toolbar__search {
  flex: 1 1 260px;
  font: inherit;
  padding: 9px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-text);
}

.toolbar__search:focus {
  outline: none;
  border-color: var(--color-accent);
}

.toolbar__select {
  font: inherit;
  padding: 9px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-text);
}

.empty-state {
  padding: 20px 16px;
}

/* ---------- Таблица себестоимости ---------- */

.cost-table td {
  vertical-align: middle;
}

.photo-placeholder {
  width: 56px;
  height: 56px;
  border-radius: 6px;
  background: var(--color-border);
}

.cost-row img {
  border-radius: 6px;
  object-fit: cover;
}

.cost-row--missing {
  box-shadow: inset 3px 0 0 var(--color-warn);
}

.cost-value {
  cursor: pointer;
  border-bottom: 1px dashed var(--color-muted);
}

.cost-value:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.cost-edit-form {
  display: flex;
  gap: 6px;
  align-items: center;
}

.cost-edit-form__price {
  width: 90px;
  font: inherit;
  padding: 6px 8px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.cost-edit-form__date {
  width: 140px;
  font: inherit;
  padding: 6px 8px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.chevron {
  background: none;
  border: none;
  font-size: 16px;
  color: var(--color-muted);
  cursor: pointer;
  padding: 4px 8px;
}

.chevron:hover {
  color: var(--color-text);
}

.history-row {
  display: none;
}

.history-row.is-open {
  display: table-row;
}

.history-row td {
  background: var(--color-bg);
  padding: 12px 16px;
}

.history-panel:empty::before {
  content: "Загрузка…";
  color: var(--color-muted);
  font-size: 13px;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
}

.history-table th,
.history-table td {
  text-align: left;
  padding: 6px 10px;
  font-size: 13px;
}

.history-table th {
  color: var(--color-muted);
  font-weight: 500;
}

.history-table__row--current {
  font-weight: 600;
}

.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-ok);
  background: var(--color-ok-bg);
  border-radius: 999px;
  padding: 2px 8px;
  margin-left: 6px;
}

/* ---------- Импорт/экспорт CSV ---------- */

.import-export code {
  background: var(--color-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

.import-export .stack--row {
  align-items: center;
}

.import-preview {
  margin-top: 14px;
}

.import-preview .history-table {
  margin: 10px 0;
}

/* ---------- ABC-анализ (/analytics) ---------- */

.stub-note {
  margin-bottom: 16px;
}

.stat-tile--group-a {
  border-color: var(--color-ok);
}

.stat-tile--group-a .stat-tile__value {
  color: var(--color-ok);
}

.stat-tile--group-c {
  border-color: var(--color-muted);
}

.abc-badge {
  display: inline-block;
  min-width: 22px;
  text-align: center;
  font-weight: 600;
  font-size: 13px;
  border-radius: 6px;
  padding: 2px 8px;
}

.abc-badge--a {
  background: var(--color-ok-bg);
  color: var(--color-ok);
}

.abc-badge--b {
  background: var(--color-warn-bg);
  color: var(--color-warn);
}

.abc-badge--c {
  background: var(--color-bg);
  color: var(--color-muted);
}

/* ---------- Табы (Склад/Финансы/Аналитика) ---------- */

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 12px;
  margin: 0 4px 4px 0;
}

/* ---------- Аналитика: плитки ---------- */

.metric-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.metric-switch button {
  font: inherit;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.metric-switch button.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.tile-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  width: 320px;
  cursor: pointer;
  position: relative;
}

.tile--summary {
  width: 100%;
  cursor: default;
  border-left-color: var(--color-accent);
  background: var(--color-bg);
}

.tile--ok { border-left-color: var(--color-ok); }
.tile--trap { border-left-color: var(--color-error); }
.tile--no_data { border-left-color: var(--color-border); }
.tile--edge { border-left-color: var(--color-warn); }

.tile__title {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tile__value {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 2px;
}

.tile__context {
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.tile__note {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 6px;
  margin-bottom: 8px;
  display: inline-block;
}

.tile__note--no_data {
  background: var(--color-bg);
  color: var(--color-muted);
}

.tile__note--edge {
  background: var(--color-warn-bg);
  color: var(--color-warn);
}

.chart-svg {
  width: 100%;
  height: 64px;
  display: block;
  overflow: visible;
}

.chart-bar {
  fill: var(--color-accent);
}

.chart-bar--negative {
  fill: var(--color-error);
}

.chart-bar--none {
  fill: var(--color-border);
}

.chart-hit {
  cursor: crosshair;
}

/* ---------- Модалка деталей плитки ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  z-index: 200;
  overflow-y: auto;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 520px;
}

.modal__close {
  float: right;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--color-muted);
}

.modal__metric-row {
  border-top: 1px solid var(--color-border);
  padding: 12px 0;
}

.modal__metric-row:first-of-type {
  border-top: none;
}