:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #152033;
  --muted: #5e6b82;
  --primary: #2a66f7;
  --border: #e2e8f4;
  --danger: #d5334a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: Inter, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  width: min(1200px, 94vw);
  margin: 0 auto;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}

.logo {
  font-size: 24px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
}

.nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

.site-burger {
  display: none;
}

@media (min-width: 901px) {
  .site-burger {
    display: none !important;
  }
}

.page {
  flex: 1;
  padding: 24px 0 42px;
  display: grid;
  gap: 20px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
}

.hero h1 {
  margin-top: 0;
  font-size: 34px;
  line-height: 1.2;
}

.hero img {
  width: 100%;
  height: 290px;
  object-fit: cover;
  border-radius: 14px;
}

.hero-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.grid {
  display: grid;
  gap: 16px;
}

.cards-3 {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.cards-2 {
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.card-body {
  padding: 14px;
}

.old-price {
  text-decoration: line-through;
  color: var(--muted);
  margin-right: 8px;
}

.discount-badge {
  display: inline-block;
  background: #ebf2ff;
  color: var(--primary);
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-left: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  min-height: 42px;
  border-radius: 10px;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
}

.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 10px;
}

input,
select,
textarea,
button {
  font-family: inherit;
}

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

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

.stack-form {
  display: grid;
  gap: 12px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
}

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

.row-actions {
  display: flex;
  gap: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.stat-card p {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

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

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

.success {
  color: #0c8a43;
  font-weight: 600;
}

.auth-page {
  min-height: 80vh;
  display: grid;
  place-items: center;
}

.auth-panel {
  width: min(420px, 95vw);
}

.constants-grid {
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
}

.listbox {
  margin-bottom: 14px;
}

.news-detail img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: 12px;
  margin: 10px 0 14px;
}

.news-content {
  line-height: 1.5;
}

.news-content p:first-child {
  margin-top: 0;
}

.news-content img {
  max-width: 100%;
  height: auto;
}

.error-page {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  overflow: hidden;
  position: relative;
  padding: 22px;
}

.error-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(42, 102, 247, 0.1), transparent 48%);
  pointer-events: none;
}

.error-content {
  position: relative;
  z-index: 1;
}

.error-chip {
  display: inline-block;
  margin: 0 0 8px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
  color: var(--primary);
  background: #ebf2ff;
}

.error-page h1 {
  margin: 0 0 10px;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.12;
}

.error-page p {
  max-width: 540px;
}

.error-visual {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  min-height: 280px;
  box-shadow: 0 10px 30px rgba(21, 32, 51, 0.14);
}

.error-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.error-badge {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.error-page-500 .error-chip {
  color: #925000;
  background: #fff2d9;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 60;
  padding: 16px;
}

.modal.open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 20, 40, 0.45);
}

.modal-dialog {
  position: relative;
  width: min(700px, 96vw);
  max-height: 92vh;
  overflow: auto;
  z-index: 2;
}

.admin-page .admin-nav {
  flex-wrap: wrap;
  margin-top: 10px;
}

.admin-page .admin-table {
  width: 100%;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
}

.admin-nav-wrap {
  display: grid;
  gap: 10px;
}

.admin-burger {
  display: none;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  padding: 16px 0;
}

@media (max-width: 1024px) {
  .hero h1 {
    font-size: 30px;
  }

  .cards-2 {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 900px) {
  .container {
    width: min(1200px, 96vw);
  }

  .nav-wrap {
    align-items: center;
    gap: 12px;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .nav {
    width: 100%;
    gap: 12px;
  }

  .site-burger {
    display: inline-flex;
    margin-left: auto;
    width: fit-content;
    flex: 0 0 auto;
  }

  .site-nav.is-public {
    display: none;
    flex-direction: column;
    width: 100%;
  }

  .site-nav.is-public.open {
    display: flex;
  }

  .nav a {
    padding: 8px 0;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .error-page {
    grid-template-columns: 1fr;
  }

  .error-visual {
    min-height: 220px;
    order: -1;
  }

  .hero img {
    height: 240px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .actions-row {
    width: 100%;
  }

  .actions-row .btn,
  .actions-row form {
    width: 100%;
  }

  .actions-row form .btn {
    width: 100%;
  }

  .admin-page .admin-nav {
    display: none;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
    margin-top: 0;
  }

  .admin-page .admin-nav.open {
    display: flex;
  }

  .admin-page .admin-nav .btn,
  .admin-page .admin-nav form,
  .admin-page .admin-nav form .btn {
    width: auto;
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .admin-page .admin-table th,
  .admin-page .admin-table td {
    padding: 8px;
  }

  .admin-burger {
    display: inline-flex;
    width: fit-content;
  }
}

@media (max-width: 640px) {
  .page {
    padding: 18px 0 28px;
    gap: 14px;
  }

  .panel {
    border-radius: 12px;
    padding: 12px;
  }

  .hero {
    border-radius: 12px;
    padding: 12px;
    gap: 14px;
  }

  .error-page {
    padding: 14px;
    border-radius: 12px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .hero-actions {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
  }

  .cards-3,
  .cards-2,
  .constants-grid,
  .stats-grid,
  .filters {
    grid-template-columns: 1fr;
  }

  .card img {
    height: 170px;
  }

  .btn,
  .btn-outline,
  .danger {
    width: 100%;
  }

  .row-actions {
    flex-direction: column;
  }

  .row-actions .btn,
  .row-actions form,
  .row-actions form .btn {
    width: 100%;
  }

  .auth-panel {
    width: 100%;
  }

  .admin-page h1 {
    font-size: 22px;
  }

  .admin-page h2 {
    font-size: 18px;
  }

  .site-burger {
    width: fit-content !important;
    margin-left: auto;
    align-self: center;
  }

  .site-nav.is-public a {
    width: 100%;
  }

  .admin-page .admin-nav {
    gap: 8px;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
    max-height: 55vh;
    padding-right: 2px;
  }

  .admin-page .admin-nav .btn,
  .admin-page .admin-nav form,
  .admin-page .admin-nav form .btn {
    width: 100%;
    min-height: 40px;
    padding: 8px 12px;
    font-size: 13px;
    justify-content: flex-start;
  }

  .admin-page .filters .btn,
  .admin-page .row-actions .btn,
  .admin-page .row-actions form,
  .admin-page .row-actions form .btn {
    width: 100%;
  }

  .admin-page .admin-table {
    font-size: 13px;
  }

  .modal {
    padding: 8px;
  }

  .modal-dialog {
    width: 100%;
    max-height: 96vh;
    border-radius: 12px;
  }
}

@media print {
  .no-print,
  .site-header,
  .site-footer {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .panel {
    border: none;
    padding: 0;
  }
}