:root {
  --color-primary: #ff003b;
  --color-secondary: #e3a535;
  --color-bg: #f7f6f2;
  --color-surface: #ffffff;
  --color-surface-alt: #f1efe9;
  --color-text: #1a1a1a;
  --color-text-muted: #4d4d4d;
  --color-border: #dad6cc;
  --color-focus: #1a1a1a;
  --color-success: #005f45;

  --font-family-display: "Quantico", "Arial Narrow", sans-serif;
  --font-family-body: "Inter", "Segoe UI", sans-serif;

  --text-xs: 0.64rem;
  --text-sm: 0.8rem;
  --text-base: 1rem;
  --text-md: 1.25rem;
  --text-lg: 1.563rem;
  --text-xl: 1.953rem;
  --text-2xl: 2.441rem;
  --text-3xl: 3.052rem;
  --text-4xl: 3.815rem;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;

  --grid-gap: 32px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow-card: 0 8px 24px rgba(26, 26, 26, 0.08);
  --shadow-selected: 0 8px 24px rgba(255, 0, 59, 0.16);
  --sidebar-top: 136px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-block-size: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(
      circle at 16% 12%,
      rgba(227, 165, 53, 0.16),
      transparent 40%
    ),
    radial-gradient(circle at 88% 10%, rgba(255, 0, 59, 0.1), transparent 36%),
    var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family-body);
  font-size: var(--text-base);
  line-height: 1.5;
}

img {
  max-inline-size: 100%;
  block-size: auto;
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin: 0;
}

a {
  color: var(--color-primary);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.visually-hidden {
  border: 0;
  clip: rect(0 0 0 0);
  block-size: 1px;
  inline-size: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
}

.app {
  max-inline-size: 1440px;
  margin-inline: auto;
  padding-inline: var(--space-4);
  padding-block-end: calc(var(--space-8) + 96px);
}

.app__header {
  position: sticky;
  inset-block-start: 0;
  z-index: 50;
  margin-block-end: var(--space-4);
  backdrop-filter: blur(6px);
  background-color: rgba(247, 246, 242, 0.88);
  border-block-end: 1px solid var(--color-border);
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.app__header-inner {
  max-inline-size: 1440px;
  margin-inline: auto;
  padding-inline: var(--space-4);
  padding-block: var(--space-3);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  transition: padding-block 0.25s ease;
}

.app__title-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.app__title {
  font-family: var(--font-family-display);
  font-size: var(--text-xl);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.app__logo {
  inline-size: min(260px, 44vw);
  block-size: auto;
  transition: inline-size 0.25s ease;
}

.app__subtitle {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-block-size: 40px;
  opacity: 1;
  transform: translateY(0);
  overflow: hidden;
  transition:
    max-block-size 0.2s ease,
    opacity 0.2s ease,
    transform 0.2s ease;
}

body.app--scrolled {
  --sidebar-top: 88px;
}

body.app--scrolled .app__header {
  background-color: rgba(247, 246, 242, 0.96);
  border-block-end-color: #cfcac0;
}

body.app--scrolled .app__header-inner {
  padding-block: var(--space-2);
}

body.app--scrolled .app__logo {
  inline-size: min(200px, 36vw);
}

body.app--scrolled .app__subtitle {
  max-block-size: 0;
  opacity: 0;
  transform: translateY(-4px);
}

.layout-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--grid-gap);
}

.layout-grid__main {
  grid-column: span 12;
}

body.app--hub-open {
  overflow: hidden;
}

.hub-launcher {
  position: fixed;
  inset-inline-end: var(--space-4);
  inset-block-end: var(--space-4);
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-block-size: 56px;
  padding-inline: var(--space-3);
  border: 1px solid #ff5c80;
  border-radius: 999px;
  color: #ffffff;
  background: linear-gradient(120deg, #ff003b 0%, #d90032 58%, #e3a535 140%);
  box-shadow: 0 12px 28px rgba(255, 0, 59, 0.32);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.hub-launcher:hover {
  transform: translateY(-2px);
}

body.app--hub-open .hub-launcher {
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
}

.hub-launcher--has-items {
  box-shadow:
    0 12px 28px rgba(255, 0, 59, 0.32),
    0 0 0 4px rgba(227, 165, 53, 0.28);
}

.hub-launcher--pulse {
  animation: hubPulse 0.8s ease;
}

@keyframes hubPulse {
  0% {
    transform: scale(1);
  }

  40% {
    transform: scale(1.06);
  }

  100% {
    transform: scale(1);
  }
}
.hub-launcher__label {
  font-family: var(--font-family-display);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}

.hub-launcher__badge {
  min-inline-size: 24px;
  block-size: 24px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background-color: #ffffff;
  color: #b3002a;
  font-size: var(--text-xs);
  font-weight: 700;
}

.hub-backdrop {
  position: fixed;
  inset: 0;
  z-index: 74;
  background-color: rgba(26, 26, 26, 0.34);
}

.hub-backdrop[hidden] {
  display: none;
}

.hub {
  position: fixed;
  inset-inline-end: var(--space-4);
  inset-block-start: var(--space-4);
  inset-block-end: var(--space-4);
  z-index: 75;
  inline-size: min(496px, calc(100vw - 2 * var(--space-4)));
  block-size: calc(100vh - 2 * var(--space-4));
  min-block-size: 560px;
  max-block-size: calc(100vh - 2 * var(--space-4));
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 46px rgba(26, 26, 26, 0.2);
  padding: var(--space-3);
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: var(--space-2);
  transform: translateX(110%);
  opacity: 0;
  pointer-events: none;
  transition:
    transform 0.25s ease,
    opacity 0.2s ease;
}

.hub--open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.hub__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hub__title {
  font-family: var(--font-family-display);
  font-size: var(--text-md);
}

.hub__close {
  min-inline-size: 40px;
  min-block-size: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
}

.hub__tabs {
  --hub-tab-index: 0;
  --hub-tab-shift: calc(100% + var(--space-1));
  --hub-tab-ease: cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-1);
}

.hub__tab {
  position: relative;
  z-index: 1;
  min-block-size: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background-color: transparent;
  color: #6a001b;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: color 0.2s ease;
}

.hub__tab--active {
  color: #ffffff;
}

.hub__tab-indicator {
  position: absolute;
  inset-block-start: 0;
  left: 0;
  inline-size: calc((100% - var(--space-1)) / 2);
  block-size: 100%;
  border-radius: var(--radius-sm);
  background-color: #ff003b;
  transform: translateX(calc(var(--hub-tab-index) * var(--hub-tab-shift)));
  transition: transform 0.24s var(--hub-tab-ease);
  pointer-events: none;
  z-index: 0;
}

html[dir="rtl"] .hub__tabs {
  --hub-tab-ease: cubic-bezier(0.64, 0, 0.78, 0);
}

html[dir="rtl"] .hub__tab-indicator {
  left: auto;
  right: 0;
  transform: translateX(calc(var(--hub-tab-index) * var(--hub-tab-shift) * -1));
}

.hub__tab-panel {
  display: none;
  min-block-size: 0;
}

.hub__tab-panel--active {
  display: flex;
  min-block-size: 0;
}

.hub__panel {
  inline-size: 100%;
  block-size: 100%;
}

.panel--padded {
  padding: var(--space-4);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-block-end: var(--space-3);
}

.section-head__title {
  font-family: var(--font-family-display);
  font-size: var(--text-lg);
}

.section-head__copy {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.controls {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-2);
  margin-block-end: var(--space-4);
}

.controls__field {
  grid-column: span 12;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

@media (min-width: 780px) {
  .controls__field--search {
    grid-column: span 8;
  }

  .controls__field--select {
    grid-column: span 4;
  }
}

.form-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.input,
.select {
  min-block-size: 48px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding-inline: var(--space-2);
  background-color: var(--color-surface);
}

.input:focus,
.select:focus,
.btn:focus-visible,
.product-card__details:focus-visible,
.selected-product__check:focus-visible,
.chat__citation-link:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.btn {
  min-block-size: 48px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding-inline: var(--space-3);
  font-weight: 600;
}

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

.btn--primary:hover {
  background-color: #d90032;
}

.btn--secondary {
  background-color: var(--color-secondary);
  color: #1a1a1a;
}

.btn--secondary:hover {
  background-color: #c7902f;
}

.btn--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
  background-color: transparent;
}

.btn--ghost:hover {
  border-color: var(--color-text);
  background-color: var(--color-surface-alt);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.product-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-3);
}

.product-grid__item {
  grid-column: span 12;
}

@media (min-width: 768px) {
  .product-grid__item {
    grid-column: span 4;
  }
}

@media (min-width: 1200px) {
  .product-grid__item {
    grid-column: span 3;
  }
}

.product-card {
  min-block-size: 100%;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface);
  padding: var(--space-2);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: var(--space-2);
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-secondary);
}

.product-card--selected {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-selected);
}

.product-card__top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  align-items: center;
}

.product-card__category {
  font-size: var(--text-xs);
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  padding-inline: var(--space-1);
  padding-block: var(--space-1);
}

.product-card__check {
  inline-size: 24px;
  block-size: 24px;
  accent-color: var(--color-primary);
}

.product-card__image {
  aspect-ratio: 1 / 1;
  inline-size: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.product-card__brand {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.product-card__name {
  font-size: var(--text-md);
  line-height: 1.3;
}

.product-card__actions {
  display: flex;
}

.product-card__details {
  min-block-size: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid #ffc7d7;
  padding-inline: var(--space-1);
  font-size: var(--text-sm);
  inline-size: 100%;
  background-color: #fff5f8;
  color: var(--color-text);
}

.selected-products {
  display: flex;
  flex-direction: column;
  min-block-size: 0;
  overflow: hidden;
}

.selected-products__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  margin-block-end: var(--space-2);
}

.selected-products__title,
.chat__title {
  font-family: var(--font-family-display);
  font-size: var(--text-md);
}

.selected-products__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-block-size: 0;
  flex: 1;
  overflow-y: auto;
}

.selected-product {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-alt);
  padding: var(--space-2);
}

.selected-product__image {
  inline-size: 56px;
  block-size: 56px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: #ffffff;
}

.selected-product__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-inline-size: 0;
}

.selected-product__name {
  font-size: var(--text-sm);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.selected-product__category {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.selected-product__remove {
  min-block-size: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid #ffc7d7;
  padding-inline: var(--space-1);
  font-size: var(--text-xs);
  background-color: #fff5f8;
  color: #9a0024;
}

.selected-product__remove:hover {
  border-color: #ff6d96;
  background-color: #ffe8ef;
}

.selected-products__actions {
  margin-block-start: var(--space-1);
  padding-block-start: var(--space-2);
  border-block-start: 1px solid var(--color-border);
  border-inline-end: 1px solid var(--color-border);
  border-block-end: 1px solid var(--color-border);
  padding-inline-end: var(--space-2);
  padding-block-end: var(--space-2);
  background-color: var(--color-surface);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.chat {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: var(--space-2);
  min-block-size: 0;
  overflow: hidden;
}

.chat__history {
  list-style: none;
  margin: 0;
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.9),
      rgba(241, 239, 233, 0.95)
    ),
    var(--color-surface-alt);
  block-size: auto;
  min-block-size: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.chat__message {
  inline-size: fit-content;
  max-inline-size: min(92%, 52ch);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  line-height: 1.45;
  word-break: break-word;
  box-shadow: 0 4px 12px rgba(26, 26, 26, 0.08);
}

.chat__message--user {
  align-self: end;
  background-color: var(--color-text);
  color: #ffffff;
  border-end-end-radius: var(--space-1);
}

.chat__message--assistant {
  align-self: start;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-end-start-radius: var(--space-1);
}

.chat__message--system {
  align-self: center;
  max-inline-size: 100%;
  padding: 0;
  box-shadow: none;
  background: transparent;
  color: var(--color-text-muted);
  text-align: center;
  font-size: var(--text-xs);
}

html[dir="rtl"] .chat__message--user {
  align-self: start;
}

html[dir="rtl"] .chat__message--assistant {
  align-self: end;
}

html[dir="rtl"] .product-card {
  text-align: right;
}

html[dir="rtl"] .product-card__top {
  flex-direction: row-reverse;
}

html[dir="rtl"] .selected-products__head {
  flex-direction: row-reverse;
}

html[dir="rtl"] .selected-product {
  grid-template-columns: auto 1fr 56px;
}

html[dir="rtl"] .selected-product__name {
  text-align: right;
}

html[dir="rtl"] .hub-launcher {
  inset-inline-end: auto;
  inset-inline-start: var(--space-4);
}

html[dir="rtl"] .hub {
  inset-inline-end: auto;
  inset-inline-start: var(--space-4);
  transform: translateX(-110%);
}

html[dir="rtl"] .hub--open {
  transform: translateX(0);
}

@media (max-width: 1079px) {
  body.app--scrolled {
    --sidebar-top: 136px;
  }

  body.app--scrolled .app__logo {
    inline-size: min(230px, 56vw);
  }

  body.app--scrolled .app__subtitle {
    max-block-size: 40px;
    opacity: 1;
    transform: none;
  }

  .hub {
    inset-inline: 0;
    inset-block-start: auto;
    inset-block-end: 0;
    inline-size: 100%;
    block-size: min(86vh, 760px);
    min-block-size: 520px;
    border-radius: 24px 24px 0 0;
    transform: translateY(110%);
  }

  .hub--open {
    transform: translateY(0);
  }

  html[dir="rtl"] .hub {
    inset-inline: 0;
    transform: translateY(110%);
  }

  html[dir="rtl"] .hub--open {
    transform: translateY(0);
  }

  .selected-products__list,
  .chat__history {
    max-block-size: none;
  }
}

.chat__citations {
  margin-block-start: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.chat__citation-link {
  font-size: var(--text-xs);
  color: #7a2e00;
  inline-size: fit-content;
  padding: var(--space-1);
  border: 1px solid #d6c4a8;
  border-radius: var(--radius-sm);
  background-color: #fffdf7;
  text-decoration: none;
}

.chat__citation-link:hover {
  border-color: #c7902f;
  background-color: #fff6e8;
}

.chat__form {
  margin-block-start: 0;
  padding-block-start: var(--space-2);
  border-block-start: 1px solid var(--color-border);
  background-color: var(--color-surface);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-1);
}

body.app--busy .chat__form {
  opacity: 0.72;
}

body.app--busy .chat__form .chat__input,
body.app--busy .chat__form .chat__submit {
  pointer-events: none;
}

.chat__input {
  grid-column: span 9;
  min-block-size: 48px;
}

.chat__submit {
  grid-column: span 3;
  min-block-size: 48px;
}

.product-grid__status,
.selected-products__count,
.product-grid__item--empty,
.selected-products__empty {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.product-grid__item--empty,
.selected-products__empty {
  padding-block: var(--space-3);
  text-align: center;
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background-color: rgba(26, 26, 26, 0.56);
  z-index: 70;
}

.modal--open {
  display: flex;
}

.modal__dialog {
  inline-size: min(720px, 100%);
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
}

.modal__title {
  font-family: var(--font-family-display);
  font-size: var(--text-md);
}

.modal__close {
  min-inline-size: 40px;
  min-block-size: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
}

.app__footer {
  max-inline-size: 1440px;
  margin-inline: auto;
  padding-inline: var(--space-4);
  padding-block: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: center;
}

@media (max-width: 560px) {
  .app {
    padding-inline: var(--space-2);
  }

  .app__header-inner,
  .app__footer {
    padding-inline: var(--space-2);
  }

  .chat__input,
  .chat__submit {
    grid-column: span 12;
  }
}