/* === Reset & Base === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-accent: #d50019;
  --color-accent-dark: #ab0015;
  --color-border: #e5e5e7;
  --color-positive: #28a745;
  --color-negative: #dc3545;
  --color-chart-line: #1d1d1f;
  --color-chart-band: rgba(29, 29, 31, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.12);
  --font: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(213, 0, 25, 0.28);
  outline-offset: 2px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

/* === Header === */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.hero-banner {
  position: relative;
  overflow: hidden;
  max-height: 220px;
}

.hero-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: center 40%;
  display: block;
}

.hero-banner--brand {
  max-height: none;
  min-height: 240px;
  background:
    radial-gradient(circle at 18% 22%, rgba(213, 0, 25, 0.42), transparent 22%),
    linear-gradient(135deg, #190f12 0%, #0c0c0d 55%, #241216 100%);
}

.hero-banner__halo {
  position: absolute;
  inset: auto auto -60px -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(213, 0, 25, 0.8) 0%, rgba(213, 0, 25, 0) 72%);
  filter: blur(10px);
}

.hero-banner__content {
  position: relative;
  z-index: 1;
  min-height: 240px;
  display: flex;
  align-items: flex-end;
  gap: 24px;
  padding-top: 32px;
  padding-bottom: 28px;
}

.hero-banner__copy {
  display: grid;
  gap: 4px;
}

.hero-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: #d50019;
  color: #fff6f2;
  font-size: 2.4rem;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 16px 36px rgba(213, 0, 25, 0.22);
}

.hero-banner--brand .site-title {
  color: #fff7f4;
}

.hero-banner--brand .site-subtitle {
  color: rgba(255, 247, 244, 0.86);
}

.hero-banner--brand .site-updated {
  color: rgba(255, 247, 244, 0.68);
}

.hero-hotspots {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}

.hero-hotspot {
  position: absolute;
  transform: translate(-50%, -50%);
  text-decoration: none;
  pointer-events: auto;
  border-radius: 10px;
  background: transparent;
}

.hero-hotspot:focus-visible {
  outline: 2px solid rgba(213, 0, 25, 0.9);
  outline-offset: 2px;
  background: rgba(213, 0, 25, 0.14);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.2) 60%, transparent 100%);
  display: flex;
  align-items: flex-end;
  padding-bottom: 20px;
  z-index: 3;
  pointer-events: none;
}

.hero-overlay .site-title {
  color: #ffffff;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.hero-overlay .site-subtitle {
  color: rgba(255, 255, 255, 0.85);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.hero-overlay .site-updated {
  color: rgba(255, 255, 255, 0.7);
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-top: 4px;
}

.site-updated {
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  margin-top: 4px;
}

.back-link {
  display: inline-block;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  margin-bottom: 8px;
}

.back-link:hover {
  color: var(--color-text);
}

.product-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.product-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.product-header-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-size: 0.8rem;
}

/* === Category Nav === */
.category-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.category-tabs {
  list-style: none;
  display: flex;
  gap: 4px;
  padding: 8px 0;
  white-space: nowrap;
}

.category-tabs li {
  flex-shrink: 0;
}

.category-tab {
  display: block;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: none;
  transition: all 0.2s;
}

.category-tab:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.category-tab.active {
  background: var(--color-text);
  color: var(--color-surface);
}

.site-links-wrap {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.site-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 0;
}

.site-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--color-text-secondary);
  text-decoration: none;
  background: var(--color-bg);
  transition: background 0.2s, color 0.2s;
}

.site-link:hover,
.site-link.is-active {
  background: var(--color-text);
  color: var(--color-surface);
}

.catalog-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
}

.catalog-toolbar__copy {
  display: grid;
  gap: 6px;
}

.section-kicker {
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.section-heading span {
  color: var(--color-text-secondary);
}

.catalog-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.catalog-stats strong {
  color: var(--color-text);
}

.toolbar-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.search-input,
.sort-select {
  appearance: none;
  min-height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  padding: 0 14px;
}

.search-input {
  min-width: 260px;
}

.sort-select {
  min-width: 180px;
}

.stale-banner {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: #fff6d8;
  border: 1px solid #f0d26a;
  color: #6f4f00;
}

.stale-banner strong {
  color: #523900;
}

.shortcut-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.shortcut-card {
  display: block;
  padding: 20px 22px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #ffffff 0%, #f0f2f5 100%);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
}

.shortcut-card strong {
  display: block;
  font-size: 1.1rem;
  margin: 4px 0 8px;
}

.shortcut-card p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.shortcut-card__eyebrow {
  display: inline-flex;
  color: #8b6b00;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rare-watch {
  margin-top: 20px;
  padding: 22px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #18130a 0%, #3c2a08 100%);
  color: #fff7df;
  box-shadow: var(--shadow);
}

.rare-watch__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
}

.rare-watch__summary {
  color: rgba(255, 247, 223, 0.78);
  font-size: 0.9rem;
}

.rare-watch .section-heading,
.rare-watch .section-kicker {
  color: #fff7df;
}

.rare-watch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.rare-watch-card {
  display: block;
  padding: 18px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.rare-watch-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.18);
  background: rgba(255, 255, 255, 0.12);
}

.rare-watch-card__top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 0.75rem;
}

.rare-watch-card__tier {
  display: inline-flex;
  padding: 4px 8px;
  border-radius: 999px;
  background: #ffd200;
  color: #5a4300;
  font-weight: 700;
}

.rare-watch-card__count {
  color: rgba(255, 247, 223, 0.72);
}

.rare-watch-card strong {
  display: block;
  font-size: 1rem;
  line-height: 1.35;
}

.rare-watch-card__name-en,
.rare-watch-card__taxonomy,
.rare-watch-card__hint,
.rare-watch-card__note {
  color: rgba(255, 247, 223, 0.75);
  font-size: 0.82rem;
}

.rare-watch-card__taxonomy,
.rare-watch-card__hint,
.rare-watch-card__note {
  margin-top: 6px;
}

.rare-watch-card__price {
  margin-top: 12px;
  font-size: 1.05rem;
  font-weight: 700;
}

/* === Product Grid === */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 24px 0;
}

.product-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.product-card[hidden] {
  display: none;
}

.product-card__thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--color-bg);
  display: block;
}

.product-card__thumb-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-border);
  font-size: 2rem;
}

.product-card__body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.product-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.product-card__badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.product-card__name {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.3;
}

.product-card__badge {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.product-card__badge--rare {
  background: #fff3bf;
  color: #7a5a00;
}

.product-card__name-en {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.product-card__taxonomy {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
}

.product-card__price {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: auto;
}

.product-card__price--na {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.product-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.product-card__range {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.product-card__footer {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 4px;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* === Loading & Error === */
.loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-secondary);
}

.error-message {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-negative);
}

.empty-state-inline {
  margin: 8px 0 32px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  text-align: center;
  box-shadow: var(--shadow);
}

.page-header {
  padding: 28px 20px;
}

.page-main {
  padding-top: 28px;
  padding-bottom: 40px;
}

.info-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.info-card--wide {
  margin-bottom: 20px;
}

.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.resources-grid,
.detail-links-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.resource-card,
.detail-link-card {
  display: block;
  min-height: 180px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none;
}

.resource-card h2,
.detail-link-card strong {
  display: block;
  font-size: 1.1rem;
  line-height: 1.4;
  margin: 8px 0 10px;
}

.resource-card p,
.detail-link-card p {
  color: var(--color-text-secondary);
}

.resource-card__host {
  display: inline-flex;
  color: #8b6b00;
  font-size: 0.78rem;
  font-weight: 700;
}

.references-section {
  margin-bottom: 40px;
}

/* === Price Summary === */
.price-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 24px 0;
}

.price-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.price-card--primary {
  border-left: 4px solid var(--color-accent);
}

.price-label {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.price-value {
  font-size: 1.3rem;
  font-weight: 700;
}

.price-value--small {
  font-size: 1rem;
}

/* === Chart Section === */
.chart-section {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.chart-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
}

.period-selector {
  display: flex;
  gap: 4px;
}

.period-btn {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background: none;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  font-family: var(--font);
  transition: all 0.2s;
}

.period-btn:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

.period-btn.active {
  background: var(--color-text);
  color: var(--color-surface);
  border-color: var(--color-text);
}

.chart-container {
  position: relative;
  height: 350px;
}

.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

.chart-empty {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  text-align: center;
  width: min(90%, 420px);
}

/* === Listings === */
.listings-section {
  margin-bottom: 40px;
}

.listings-section h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.listings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.listing-card {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s;
}

.listing-card:hover {
  box-shadow: var(--shadow-hover);
}

.listing-card__image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--color-bg);
}

.listing-card__info {
  padding: 12px;
}

.listing-card__title {
  font-size: 0.8rem;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.listing-card__price {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 6px;
}

/* === Footer === */
.site-footer {
  margin-top: auto;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  text-align: center;
}

.footer-attribution {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.ebay-logo {
  height: 24px;
  width: auto;
}

.footer-note {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

.detail-note {
  margin: -8px 0 20px;
  color: var(--color-text-secondary);
  font-size: 0.82rem;
}

.detail-note--normal {
  margin: 8px 0 0;
}

.rare-detail-note {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin: 0 0 24px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: #fff6d8;
  border: 1px solid #f0d26a;
  color: #6f4f00;
}

.rare-detail-note strong {
  color: #523900;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 0.85rem;
}

.history-table th,
.history-table td {
  padding: 10px 12px;
  border-top: 1px solid var(--color-border);
  text-align: left;
}

.history-table th {
  color: var(--color-text-secondary);
  font-weight: 600;
}

/* === Subcategory Headers === */
.subcategory-header {
    grid-column: 1 / -1;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    padding: 16px 0 8px 0;
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.subcategory-header::before,
.subcategory-header::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.subcategory-header:first-child {
    margin-top: 0;
    padding-top: 0;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .rare-watch-grid,
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .search-input {
    min-width: 220px;
  }

  .resources-grid,
  .detail-links-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .catalog-toolbar {
    align-items: stretch;
  }

  .toolbar-controls {
    width: 100%;
  }

  .search-input,
  .sort-select {
    width: 100%;
  }

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

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

  .shortcut-grid,
  .resources-grid,
  .detail-links-grid {
    grid-template-columns: 1fr;
  }

  .chart-container {
    height: 280px;
  }

  .chart-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .product-header-meta {
    gap: 6px;
  }

  .page-header {
    padding-left: 20px;
    padding-right: 20px;
  }
}

@media (max-width: 480px) {
  .rare-watch {
    padding: 18px;
  }

  .rare-watch__header {
    align-items: flex-start;
  }

  .rare-watch-grid,
  .product-grid {
    grid-template-columns: 1fr;
  }

  .price-summary {
    grid-template-columns: 1fr 1fr;
  }

  .period-selector {
    flex-wrap: wrap;
  }

  .site-title {
    font-size: 1.25rem;
  }

  .hero-banner,
  .hero-image {
    max-height: 140px;
    height: 140px;
  }

  .hero-overlay {
    padding-bottom: 12px;
  }

  .catalog-stats {
    gap: 8px;
  }

  .section-heading {
    font-size: 1.25rem;
  }

  .meta-pill {
    font-size: 0.75rem;
  }

  .site-links {
    gap: 8px;
  }

  .site-link {
    width: 100%;
    justify-content: center;
  }
}