/* ── Design tokens ─────────────────────────────────────────────────────────── */
:root {
  --font: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;

  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-elevated: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --text: #0f172a;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;

  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --primary-soft: #e0f2fe;

  --cyan: #06b6d4;
  --cyan-soft: #ecfeff;
  --cyan-border: #67e8f9;

  --amber: #d97706;
  --amber-soft: #fffbeb;
  --amber-border: #fcd34d;

  --violet: #7c3aed;
  --violet-soft: #f5f3ff;
  --violet-border: #c4b5fd;

  --green: #16a34a;
  --green-soft: #f0fdf4;
  --red: #dc2626;
  --red-soft: #fef2f2;
  --yellow: #ca8a04;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);

  --header-h: 72px;
  --max-w: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Layout ────────────────────────────────────────────────────────────────── */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand__icon {
  font-size: 1.75rem;
  line-height: 1;
}

.brand__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand__subtitle {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.status-pill {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: var(--border);
  color: var(--text-muted);
}

.status-pill[data-state="ok"] {
  background: var(--green-soft);
  color: var(--green);
}

.status-pill[data-state="error"] {
  background: var(--red-soft);
  color: var(--red);
}

.header__dash-link {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  transition: color 0.15s, border-color 0.15s;
}

.header__dash-link:hover {
  color: var(--primary-dark);
  border-color: var(--primary);
}

.main {
  flex: 1;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.footer {
  text-align: center;
  padding: 1.25rem;
  font-size: 0.8rem;
  color: var(--text-subtle);
  border-top: 1px solid var(--border);
}

.footer__beta {
  margin: 0.35rem 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ── Search ────────────────────────────────────────────────────────────────── */
.search-section {
  margin-bottom: 1.5rem;
}

.search-card {
  background: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  color: #fff;
  box-shadow: var(--shadow-lg);
}

.search-card__title {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.search-card__hint {
  margin: 0 0 1.25rem;
  font-size: 0.88rem;
  opacity: 0.88;
}

.search-form__row {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.input-wrap {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.input-wrap__icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.1rem;
  height: 1.1rem;
  color: var(--text-subtle);
  pointer-events: none;
}

.search-form__input {
  width: 100%;
  height: 52px;
  padding: 0 1rem 0 2.75rem;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text);
  background: var(--surface);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-form__input:focus {
  outline: none;
  border-color: #fff;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
}

.search-form__input::placeholder {
  font-weight: 400;
  letter-spacing: normal;
  color: var(--text-subtle);
}

.search-form__options {
  margin-top: 0.85rem;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
  user-select: none;
  opacity: 0.92;
}

.checkbox input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox__box {
  width: 1.1rem;
  height: 1.1rem;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 4px;
  display: grid;
  place-items: center;
  transition: background 0.15s, border-color 0.15s;
}

.checkbox input:checked + .checkbox__box {
  background: #fff;
  border-color: #fff;
}

.checkbox input:checked + .checkbox__box::after {
  content: "";
  width: 0.35rem;
  height: 0.6rem;
  border: solid var(--primary-dark);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 52px;
  padding: 0 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.15s, opacity 0.15s;
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn--primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover:not(:disabled) {
  box-shadow: var(--shadow);
}

.btn__spinner {
  width: 1.1rem;
  height: 1.1rem;
  border: 2px solid var(--primary-soft);
  border-top-color: var(--primary-dark);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.search-examples {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.search-examples__label {
  font-size: 0.8rem;
  opacity: 0.8;
}

.chip {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s;
}

.chip:hover {
  background: rgba(255, 255, 255, 0.28);
}

/* ── Alert ─────────────────────────────────────────────────────────────────── */
.alert {
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  animation: fadeIn 0.25s ease;
}

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

.alert--warning {
  background: #fffbeb;
  color: var(--yellow);
  border: 1px solid #fde68a;
}

/* ── Loading ───────────────────────────────────────────────────────────────── */
.loading {
  margin: 2rem 0;
}

.loading__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.loading__spinner {
  width: 44px;
  height: 44px;
  margin: 0 auto 1rem;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading__title {
  margin: 0 0 0.35rem;
  font-weight: 600;
}

.loading__steps {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Results meta ──────────────────────────────────────────────────────────── */
.results {
  animation: fadeIn 0.35s ease;
}

.results__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.source-badge,
.verified-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
}

.source-badge {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.verified-badge--ok {
  background: var(--green-soft);
  color: var(--green);
}

.verified-badge--warn {
  background: #fffbeb;
  color: var(--amber);
}

.verified-badge--bad {
  background: var(--red-soft);
  color: var(--red);
}

/* ── Product hero ──────────────────────────────────────────────────────────── */
.product-hero {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}

.product-hero__image-wrap {
  width: 140px;
  height: 140px;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.product-hero__image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.5rem;
}

.product-hero__fallback {
  color: var(--text-subtle);
  width: 56px;
  height: 56px;
}

.product-hero__fallback svg {
  width: 100%;
  height: 100%;
}

.product-hero__brand {
  margin: 0 0 0.2rem;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.product-hero__name {
  margin: 0 0 0.65rem;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
}

.product-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.product-hero__barcode {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.product-hero__barcode code {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.06em;
}

.product-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary-dark);
  text-decoration: none;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  transition: background 0.15s;
}

.link-btn:hover {
  background: #bae6fd;
}

.best-price {
  text-align: right;
  padding: 0.85rem 1rem;
  background: var(--green-soft);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius);
  min-width: 140px;
}

.best-price__label {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--green);
}

.best-price__value {
  margin: 0.15rem 0 0;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--green);
}

.best-price__store {
  margin: 0.15rem 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Warnings ──────────────────────────────────────────────────────────────── */
.warnings {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  margin-bottom: 1.25rem;
  font-size: 0.88rem;
}

.warnings ul {
  margin: 0;
  padding-left: 1.2rem;
}

.warnings li + li {
  margin-top: 0.25rem;
}

/* ── Panels ────────────────────────────────────────────────────────────────── */
.panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.panel {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 2px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.panel--full {
  grid-column: 1 / -1;
}

.panel--product {
  border-color: var(--cyan-border);
}

.panel--nutrition {
  border-color: var(--amber-border);
}

.panel--retailers {
  border-color: var(--violet-border);
}

.panel__header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--border);
}

.panel--product .panel__header { background: var(--cyan-soft); }
.panel--nutrition .panel__header { background: var(--amber-soft); }
.panel--retailers .panel__header { background: var(--violet-soft); }

.panel__icon {
  font-size: 1.1rem;
}

.panel__title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
}

.panel__subtitle {
  margin: 0;
  width: 100%;
  font-size: 0.78rem;
  color: var(--text-muted);
  padding-left: 1.6rem;
}

.detail-list {
  margin: 0;
  padding: 0.75rem 1.1rem 1rem;
}

.detail-list__row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 0.75rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border);
}

.detail-list__row:last-child {
  border-bottom: none;
}

.detail-list dt {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.detail-list dd {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  word-break: break-word;
}

.detail-list dd a {
  color: var(--primary-dark);
  text-decoration: none;
}

.detail-list dd a:hover {
  text-decoration: underline;
}

/* ── Nutrition ─────────────────────────────────────────────────────────────── */
.nutrition-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
  padding: 1rem 1.1rem;
}

.nutrition-item {
  background: var(--amber-soft);
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.8rem;
}

.nutrition-item__label {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.nutrition-item__value {
  margin: 0.15rem 0 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.empty-state {
  padding: 1.5rem 1.1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ── Retailer table ────────────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
  padding: 0 0.5rem 0.5rem;
}

.retailer-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.retailer-table th {
  text-align: left;
  padding: 0.75rem 0.65rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--violet);
  border-bottom: 2px solid var(--violet-border);
  white-space: nowrap;
}

.retailer-table td {
  padding: 0.8rem 0.65rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.retailer-table tbody tr:hover {
  background: var(--violet-soft);
}

.retailer-table .price {
  font-weight: 700;
  color: var(--green);
  white-space: nowrap;
}

.retailer-table .stock--yes { color: var(--green); font-weight: 700; }
.retailer-table .stock--no { color: var(--red); font-weight: 700; }
.retailer-table .stock--unknown { color: var(--text-subtle); }

.retailer-table a {
  color: var(--primary-dark);
  word-break: break-all;
}

.retailer-cards {
  display: none;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.75rem 1rem 1rem;
}

.retailer-card {
  border: 1px solid var(--violet-border);
  border-radius: var(--radius);
  padding: 1rem;
  background: var(--violet-soft);
}

.retailer-card__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.retailer-card__name {
  font-weight: 700;
  font-size: 0.95rem;
}

.retailer-card__price {
  font-weight: 700;
  color: var(--green);
  font-size: 1.05rem;
}

.retailer-card__meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.retailer-card__link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary-dark);
}

/* ── Animations ────────────────────────────────────────────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .product-hero {
    grid-template-columns: 1fr;
  }

  .product-hero__image-wrap {
    width: 120px;
    height: 120px;
  }

  .best-price {
    text-align: left;
  }

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

@media (max-width: 640px) {
  .search-form__row {
    flex-direction: column;
  }

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

  .table-wrap {
    display: none;
  }

  .retailer-cards {
    display: flex;
  }

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

  .detail-list__row {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}