:root {
  --bg: #f2f4f7;
  --bg-soft: #e9edf2;
  --panel: rgba(255, 255, 255, 0.93);
  --panel-strong: rgba(255, 255, 255, 0.98);
  --line: rgba(84, 93, 108, 0.12);
  --line-soft: rgba(84, 93, 108, 0.09);
  --text: #243140;
  --text-soft: rgba(36, 49, 64, 0.66);
  --accent: #0c4da2;
  --accent-deep: #1c6bd1;
  --accent-dark: #3d5068;
  --cta: #f47b22;
  --cta-deep: #da640e;
  --cta-shadow: rgba(244, 123, 34, 0.24);
  --radius-xl: 0;
  --radius-lg: 0;
  --radius-md: 0;
  --shadow: 0 26px 70px rgba(60, 78, 104, 0.12);
  --transition: 220ms ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 12%, rgba(12, 77, 162, 0.08), transparent 16%),
    radial-gradient(circle at 88% 10%, rgba(100, 118, 143, 0.08), transparent 14%),
    linear-gradient(180deg, #f8fafc 0%, #eef2f6 52%, #e8edf3 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(84, 93, 108, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(84, 93, 108, 0.02) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.65;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.catalog-shell {
  position: relative;
  width: min(1600px, calc(100% - 16px));
  margin: 8px auto;
}

.catalog-topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  margin-bottom: 12px;
  padding: 18px 22px;
  border-radius: 0;
  border: 1px solid rgba(12, 77, 162, 0.26);
  background: linear-gradient(135deg, #0c4da2 0%, #0b438f 58%, #093a7c 100%);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 64px rgba(12, 49, 97, 0.24);
}

.back-link,
.action-link,
.control-button,
.lang-button {
  transition:
    transform var(--transition),
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition),
    opacity var(--transition);
}

.back-link,
.action-link,
.control-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 0;
  border: 1px solid var(--line);
  font-size: 0.92rem;
  font-weight: 700;
}

.back-link {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.24);
}

.back-link:hover,
.back-link:focus-visible,
.action-link:hover,
.action-link:focus-visible,
.control-button:hover,
.control-button:focus-visible {
  transform: translateY(-1px);
}

.catalog-brand {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.catalog-brand-mark {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-width: 214px;
  min-height: 84px;
  padding: 0 14px 0 0;
  background: transparent;
}

.catalog-brand img {
  display: block;
  max-width: 100%;
  height: 48px;
  width: auto;
  filter: none;
}

.catalog-brand-copy {
  min-width: 0;
}

.viewer-badge,
.info-label,
.viewer-toolbar-title {
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.catalog-brand h1,
.catalog-info h2 {
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.catalog-brand h1 {
  font-size: clamp(2.1rem, 3.3vw, 3rem);
  color: #ffffff;
  text-transform: uppercase;
}

html[lang="ru"] .catalog-brand-mark {
  min-width: 182px;
}

html[lang="ru"] .catalog-brand img {
  height: 40px;
}

html[lang="ru"] .catalog-brand h1 {
  font-size: clamp(1.72rem, 2.45vw, 2.45rem);
  line-height: 1.04;
}

@media (max-width: 1440px) {
  .catalog-brand-mark {
    min-width: 196px;
    min-height: 80px;
  }

  .catalog-brand img {
    height: 42px;
  }

  html[lang="ru"] .catalog-brand-mark {
    min-width: 170px;
  }

  html[lang="ru"] .catalog-brand img {
    height: 36px;
  }
}

@media (max-width: 1280px) {
  .catalog-brand-mark {
    min-width: 176px;
    min-height: 74px;
  }

  .catalog-brand img {
    height: 38px;
  }

  html[lang="ru"] .catalog-brand-mark {
    min-width: 154px;
  }

  html[lang="ru"] .catalog-brand img {
    height: 32px;
  }

  html[lang="ru"] .catalog-brand h1 {
    font-size: clamp(1.58rem, 2.25vw, 2.15rem);
  }
}

.catalog-topbar-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.lang-switch {
  display: inline-flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.08);
}

.lang-button {
  min-width: 54px;
  min-height: 40px;
  border: none;
  border-radius: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.lang-button.is-active {
  background: rgba(255, 255, 255, 0.98);
  color: var(--accent);
  box-shadow: 0 10px 24px rgba(12, 49, 97, 0.18);
}

.action-link {
  background: linear-gradient(135deg, var(--cta) 0%, var(--cta-deep) 100%);
  color: #ffffff;
  border-color: rgba(244, 123, 34, 0.34);
  box-shadow: 0 12px 24px var(--cta-shadow);
}

.action-link-subtle,
.control-button {
  background: rgba(255, 255, 255, 0.88);
  color: #43586e;
  box-shadow: none;
}

.catalog-topbar .action-link-subtle {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.24);
}

.catalog-topbar .back-link:hover,
.catalog-topbar .back-link:focus-visible {
  background: rgba(255, 255, 255, 0.16);
}

.catalog-topbar .action-link:hover,
.catalog-topbar .action-link:focus-visible {
  background: linear-gradient(135deg, #ff8d35 0%, #e66f1a 100%);
  border-color: rgba(255, 154, 73, 0.42);
  box-shadow: 0 16px 28px rgba(244, 123, 34, 0.3);
}

.catalog-topbar .action-link-subtle:hover,
.catalog-topbar .action-link-subtle:focus-visible {
  background: linear-gradient(135deg, var(--cta) 0%, var(--cta-deep) 100%);
  color: #ffffff;
  border-color: rgba(244, 123, 34, 0.34);
  box-shadow: 0 12px 24px var(--cta-shadow);
}

.control-button-accent {
  background: linear-gradient(135deg, var(--cta) 0%, var(--cta-deep) 100%);
  color: #ffffff;
  border-color: rgba(244, 123, 34, 0.34);
  box-shadow: 0 12px 24px var(--cta-shadow);
}

.catalog-layout {
  display: grid;
  grid-template-columns: minmax(240px, 280px) minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.catalog-info,
.viewer-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.catalog-info {
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(246, 249, 252, 0.94) 100%);
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 20px);
  overflow: auto;
}

.viewer-badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 0;
  background: rgba(12, 77, 162, 0.08);
  border: 1px solid rgba(12, 77, 162, 0.14);
  color: #0c4da2;
  font-size: 0.72rem;
  font-weight: 800;
}

.catalog-info h2 {
  margin-top: 16px;
  color: #243140;
  font-size: clamp(1.45rem, 2.4vw, 1.8rem);
  text-transform: uppercase;
}

.viewer-lead,
.viewer-note,
.page-state,
.viewer-fallback {
  line-height: 1.75;
}

.viewer-lead {
  margin-top: 10px;
  color: var(--text-soft);
  font-size: 0.94rem;
}

.info-grid {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.info-grid > .info-card:nth-child(3) {
  display: none;
}

.info-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
}

.info-label {
  display: inline-flex;
  color: rgba(67, 88, 110, 0.56);
  font-size: 0.72rem;
  font-weight: 700;
}

.info-card strong {
  display: block;
  margin-top: 10px;
  color: #243140;
  font-size: 1rem;
}

.viewer-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.page-jump {
  grid-column: 1 / -1;
  display: grid;
  gap: 8px;
  padding: 16px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
  color: rgba(67, 88, 110, 0.78);
  font-size: 0.9rem;
  font-weight: 600;
}

.page-jump input {
  width: 100%;
  min-height: 52px;
  padding: 0 14px;
  border: 1px solid rgba(84, 93, 108, 0.12);
  border-radius: 0;
  background: #ffffff;
  color: #243140;
}

.page-state {
  margin-top: 18px;
  color: #3d5068;
  font-size: 0.94rem;
  font-weight: 700;
}

.viewer-note {
  margin-top: 12px;
  color: rgba(36, 49, 64, 0.58);
  font-size: 0.92rem;
}

.viewer-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-height: calc(100vh - 86px);
  height: calc(100vh - 86px);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(244, 247, 250, 0.98) 100%);
  color: var(--text);
  overflow: hidden;
}

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(242, 246, 250, 0.94) 100%);
}

.viewer-toolbar-main {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  min-width: 0;
}

.viewer-toolbar-title {
  font-size: 0.84rem;
  font-weight: 800;
  color: rgba(12, 77, 162, 0.82);
}

.viewer-toolbar-contact {
  color: rgba(67, 88, 110, 0.82);
  font-size: 0.9rem;
  line-height: 1.4;
}

.viewer-toolbar-phone {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(244, 123, 34, 0.28);
  background: linear-gradient(135deg, rgba(244, 123, 34, 0.1) 0%, rgba(244, 123, 34, 0.18) 100%);
  color: #d86410;
  font-size: 0.9rem;
  font-weight: 800;
  white-space: nowrap;
}

.viewer-toolbar-phone:hover,
.viewer-toolbar-phone:focus-visible {
  background: linear-gradient(135deg, rgba(244, 123, 34, 0.16) 0%, rgba(244, 123, 34, 0.24) 100%);
}

.viewer-toolbar-page {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 0;
  background: rgba(12, 77, 162, 0.08);
  color: rgba(12, 77, 162, 0.86);
  font-size: 0.9rem;
  font-weight: 700;
}

.viewer-frame-wrap {
  position: relative;
  min-height: 0;
  height: 100%;
  background: #dde3ea;
}

.viewer-frame-wrap iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: none;
  background: #eef2f6;
}

.viewer-fallback {
  display: none;
}

@media (max-width: 1180px) {
  .catalog-topbar {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .catalog-brand {
    gap: 14px;
  }

  .catalog-brand-mark {
    min-width: 156px;
    min-height: 66px;
  }

  .catalog-brand img {
    height: 34px;
  }

  .catalog-brand h1 {
    font-size: clamp(1.7rem, 4vw, 2.25rem);
  }

  html[lang="ru"] .catalog-brand-mark {
    min-width: 138px;
  }

  html[lang="ru"] .catalog-brand img {
    height: 28px;
  }

  html[lang="ru"] .catalog-brand h1 {
    font-size: clamp(1.42rem, 3.4vw, 1.9rem);
  }

  .catalog-topbar-actions {
    justify-content: flex-start;
  }

  .catalog-layout {
    grid-template-columns: 1fr;
  }

  .viewer-panel {
    min-height: 780px;
    height: auto;
  }

  .catalog-info {
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 900px) {
  .catalog-brand-mark {
    min-width: 144px;
    min-height: 60px;
  }

  .catalog-brand img {
    height: 30px;
  }

  .catalog-brand h1 {
    font-size: clamp(1.46rem, 4.8vw, 1.95rem);
  }

  html[lang="ru"] .catalog-brand-mark {
    min-width: 124px;
  }

  html[lang="ru"] .catalog-brand img {
    height: 25px;
  }

  html[lang="ru"] .catalog-brand h1 {
    font-size: clamp(1.24rem, 4vw, 1.64rem);
  }
}

@media (max-width: 720px) {
  .catalog-shell {
    width: min(100% - 20px, 100%);
    margin: 10px auto;
  }

  .catalog-topbar,
  .catalog-info {
    padding: 18px;
  }

  .catalog-brand {
    flex-direction: row;
    align-items: stretch;
  }

  .catalog-brand-mark {
    min-width: 126px;
    min-height: 58px;
    padding: 0 10px 0 0;
  }

  .catalog-brand img {
    height: 26px;
  }

  .catalog-brand h1 {
    font-size: clamp(1.22rem, 6vw, 1.58rem);
  }

  html[lang="ru"] .catalog-brand-mark {
    min-width: 112px;
  }

  html[lang="ru"] .catalog-brand img {
    height: 22px;
  }

  html[lang="ru"] .catalog-brand h1 {
    font-size: clamp(1.06rem, 5.2vw, 1.36rem);
  }

  .catalog-topbar-actions {
    width: 100%;
  }

  .lang-switch,
  .action-link,
  .control-button,
  .back-link {
    width: 100%;
    justify-content: center;
  }

  .viewer-controls {
    grid-template-columns: 1fr;
  }

  .viewer-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .viewer-toolbar-main {
    align-items: flex-start;
  }

  .viewer-frame-wrap iframe {
    height: calc(100vh - 310px);
  }
}

@media (max-width: 540px) {
  .catalog-brand {
    gap: 10px;
  }

  .catalog-brand-mark {
    min-width: 108px;
    min-height: 52px;
    padding-right: 8px;
  }

  .catalog-brand img {
    height: 22px;
  }

  .catalog-brand h1 {
    font-size: clamp(1.04rem, 5.8vw, 1.34rem);
  }

  html[lang="ru"] .catalog-brand-mark {
    min-width: 96px;
  }

  html[lang="ru"] .catalog-brand img {
    height: 18px;
  }

  html[lang="ru"] .catalog-brand h1 {
    font-size: clamp(0.96rem, 4.8vw, 1.18rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}