:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-text: #1c1e21;
  --color-muted: #6b7280;
  --color-accent: #2563eb;
  --color-error: #dc2626;
  --color-ok: #16a34a;
  --radius: 8px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  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;
}

a:hover {
  text-decoration: underline;
}

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

/* --- Навигация --- */

.topnav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 24px;
  background: var(--color-surface);
  border-bottom: 1px solid #e5e7eb;
}

.topnav-left .store-name {
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text);
}

.topnav-center {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.nav-tab {
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--color-muted);
  font-weight: 500;
}

.nav-tab:hover {
  background: var(--color-bg);
  text-decoration: none;
}

.nav-tab.active {
  color: var(--color-accent);
  background: #eff4ff;
}

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

.nav-settings {
  color: var(--color-muted);
  white-space: nowrap;
}

.user-menu {
  position: relative;
}

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

.user-menu-trigger:hover {
  background: var(--color-bg);
}

.user-menu-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  min-width: 160px;
  background: var(--color-surface);
  border: 1px solid #e5e7eb;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  padding: 6px;
}

.user-menu-dropdown a,
.user-menu-dropdown .link-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;
}

.user-menu-dropdown a:hover,
.user-menu-dropdown .link-button:hover {
  background: var(--color-bg);
  text-decoration: none;
}

/* --- Разметка страницы --- */

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

.page-auth {
  max-width: none;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.content-card,
.stub-card,
.auth-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid #e5e7eb;
}

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

.stub-card {
  text-align: center;
  padding: 64px 24px;
}

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

/* --- Формы --- */

.auth-form,
.account-section form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--color-muted);
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="date"] {
  font: inherit;
  padding: 9px 12px;
  border: 1px solid #d1d5db;
  border-radius: var(--radius);
  color: var(--color-text);
  background: var(--color-surface);
}

input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.btn {
  font: inherit;
  padding: 9px 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 500;
}

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

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  background: var(--color-surface);
  border-color: #d1d5db;
  color: var(--color-text);
}

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

/* --- Уведомления --- */

.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 14px;
}

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

.alert-ok {
  background: #f0fdf4;
  color: var(--color-ok);
  border: 1px solid #bbf7d0;
}

.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
}

.toast {
  background: var(--color-text);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  max-width: 320px;
  font-size: 14px;
}

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

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

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

.htmx-indicator {
  opacity: 0;
  margin-left: 8px;
  color: var(--color-muted);
  font-size: 13px;
}

.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
  opacity: 1;
}

.ozon-verify {
  margin-top: 8px;
  display: flex;
  align-items: center;
}

#ozon-status:not(:empty) {
  margin-top: 12px;
}

/* --- Аккаунт --- */

.account-section {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid #e5e7eb;
}

.account-section:first-of-type {
  margin-top: 12px;
  padding-top: 0;
  border-top: none;
}

.kv-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  margin: 0;
}

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

.kv-list dd {
  margin: 0;
}

/* --- Плитки себестоимости --- */

.tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.tile {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid #e5e7eb;
  color: var(--color-text);
}

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

.tile-value {
  font-size: 22px;
  font-weight: 700;
}

.tile-label {
  font-size: 12px;
  color: var(--color-muted);
}

.tile-warning {
  border-color: #fde68a;
  background: #fffbeb;
}

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

/* --- Панель фильтров --- */

.costs-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.search-input {
  flex: 1;
  min-width: 200px;
}

.costs-filters select {
  font: inherit;
  padding: 9px 10px;
  border: 1px solid #d1d5db;
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
}

.rows-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

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

/* --- Таблица себестоимости --- */

.costs-table .product-thumb {
  width: 56px;
  height: 56px;
  border-radius: 6px;
  object-fit: cover;
  display: block;
}

.product-thumb-placeholder {
  background: #e5e7eb;
}

.cost-row-group.no-cost .responsive-cards-row {
  box-shadow: inset 3px 0 0 var(--color-error);
}

.archived-row {
  opacity: 0.6;
}

.cost-cell .cost-display {
  cursor: pointer;
}

.cost-value {
  font-weight: 600;
}

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

.inline-cost-form input[type="text"] {
  width: 90px;
}

.inline-cost-form input[type="date"] {
  width: 140px;
}

.chevron-cell {
  text-align: right;
}

.chevron-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-muted);
  transition: transform 0.15s;
}

.chevron-btn.open {
  transform: rotate(90deg);
}

.history-row td {
  background: var(--color-bg);
}

.history-panel {
  padding: 8px 4px;
}

.history-table {
  width: 100%;
}

.badge-current {
  color: var(--color-ok);
  font-size: 12px;
}

.import-errors {
  color: var(--color-error);
  font-size: 13px;
  margin: 8px 0;
}

.btn-link {
  background: none;
  border: none;
  color: var(--color-accent);
  cursor: pointer;
  padding: 0;
  font: inherit;
}

/* --- Таблицы (используются на странице себестоимости) --- */

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

th, td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid #e5e7eb;
}

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

@media (max-width: 720px) {
  .topnav {
    flex-wrap: wrap;
    padding: 10px 16px;
  }

  .topnav-center {
    order: 3;
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
  }

  .page {
    padding: 16px;
  }

  table.responsive-cards thead {
    display: none;
  }

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

  table.responsive-cards tr {
    border: 1px solid #e5e7eb;
    border-radius: var(--radius);
    margin-bottom: 10px;
    padding: 8px 12px;
  }

  table.responsive-cards td {
    border: none;
    padding: 6px 0;
  }

  table.responsive-cards td[data-label]::before {
    content: attr(data-label);
    display: block;
    font-size: 11px;
    color: var(--color-muted);
    margin-bottom: 2px;
  }

  .costs-table .chevron-cell::before {
    content: none;
  }

  .tiles {
    grid-template-columns: repeat(2, 1fr);
  }
}