/* ItemOracle — Minimal, clean styling. Mobile-first. AI-readable markup. */

:root {
  --color-primary: #1a4d8f;
  --color-accent: #f59e0b;
  --color-text: #1a202c;
  --color-text-light: #4a5568;
  --color-bg: #ffffff;
  --color-bg-alt: #f7fafc;
  --color-border: #e2e8f0;
  --color-success: #15803d;
  --color-danger: #b91c1c;

  --font-heading: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --radius: 8px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --max-width: 1200px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #e2e8f0;
    --color-text-light: #a0aec0;
    --color-bg: #0f172a;
    --color-bg-alt: #1e293b;
    --color-border: #334155;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

h1, h2, h3, h4 { font-family: var(--font-heading); line-height: 1.3; margin: 1.2em 0 0.5em; }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.2rem; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* ---- Header ---- */

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.brand {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-primary);
}

.main-nav {
  display: flex;
  gap: 1.5rem;
  flex: 1;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 500;
}

.search-form {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg-alt);
}

.search-form input {
  border: 0;
  padding: 0.5rem 0.8rem;
  background: transparent;
  color: var(--color-text);
  outline: none;
  min-width: 220px;
}

.search-form button {
  border: 0;
  background: var(--color-primary);
  color: white;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
}

/* ---- Hero ---- */

.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}

.hero h1 {
  font-size: 2.8rem;
  margin: 0 0 0.5rem;
  color: var(--color-primary);
}

.hero .tagline {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin: 0 0 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.stat {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.2rem;
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 1.8rem;
  color: var(--color-primary);
  font-weight: 800;
}

.stat span { font-size: 0.85rem; color: var(--color-text-light); }

/* ---- Grids ---- */

.niche-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.niche-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--color-text);
  transition: transform 0.1s;
}

.niche-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.niche-card h3 { margin: 0 0 0.3rem; color: var(--color-primary); }
.niche-card p { margin: 0; font-size: 0.9rem; color: var(--color-text-light); }

.subcategory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.subcategory-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--color-text);
}

.subcategory-card h2 { font-size: 1.1rem; margin: 0 0 0.3rem; }
.subcategory-card p { margin: 0; font-size: 0.85rem; color: var(--color-text-light); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
}

.product-card img {
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  margin-bottom: 0.6rem;
}

.product-card h3 {
  font-size: 0.95rem;
  margin: 0 0 0.4rem;
  line-height: 1.3;
}

.product-card .brand { font-size: 0.8rem; color: var(--color-text-light); margin: 0 0 0.3rem; }
.product-card .rating { font-size: 0.85rem; margin: 0.2rem 0; color: var(--color-accent); }

/* ---- Tiers ---- */

.tier {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.3rem;
}

.tier-budget { background: #dcfce7; color: #166534; }
.tier-mid-range { background: #dbeafe; color: #1e40af; }
.tier-premium { background: #fef3c7; color: #854d0e; }

@media (prefers-color-scheme: dark) {
  .tier-budget { background: #14532d; color: #bbf7d0; }
  .tier-mid-range { background: #1e3a8a; color: #bfdbfe; }
  .tier-premium { background: #713f12; color: #fde68a; }
}

/* ---- Product detail ---- */

.product-detail .meta {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.product-detail .meta span { margin-right: 0.8rem; }

.product-body {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (max-width: 700px) {
  .product-body { grid-template-columns: 1fr; }
}

.product-image img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: contain;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 1rem;
}

.short-desc { font-size: 1.05rem; }

.cta-primary, .cta {
  display: inline-block;
  background: var(--color-accent);
  color: #1a202c !important;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  margin-top: 1rem;
}

.cta-primary:hover, .cta:hover {
  background: #d97706;
  text-decoration: none;
}

.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

@media (max-width: 600px) { .pros-cons { grid-template-columns: 1fr; } }

.pros, .cons {
  background: var(--color-bg-alt);
  padding: 1rem 1.2rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-border);
}

.pros { border-left-color: var(--color-success); }
.cons { border-left-color: var(--color-danger); }

.pros h2, .cons h2 { margin-top: 0; font-size: 1.1rem; }

.tags {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tags li {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

.tags li a { color: var(--color-text); text-decoration: none; }

/* ---- Best X ---- */

.best-page .criteria {
  color: var(--color-text-light);
  font-style: italic;
}

.best-page .intro { margin-bottom: 2rem; font-size: 1.05rem; }

.product-list ol { list-style: none; padding: 0; }

.rank-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: flex-start;
}

.rank-item .rank {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  min-width: 50px;
  text-align: center;
}

.product-card-wide {
  flex: 1;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
}

@media (max-width: 700px) {
  .product-card-wide { grid-template-columns: 1fr; }
  .product-card-wide img { max-width: 200px; }
}

.product-card-wide img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: contain;
}

.product-card-wide .info h3 { margin: 0 0 0.5rem; }

.guide-items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.guide-item {
  background: var(--color-bg-alt);
  padding: 1rem;
  border-radius: var(--radius);
}

.guide-item h3 { margin-top: 0; font-size: 1rem; }

/* ---- Compare ---- */

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

@media (max-width: 700px) { .compare-grid { grid-template-columns: 1fr; } }

.compare-card {
  background: var(--color-bg-alt);
  padding: 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.compare-card img {
  max-width: 200px;
  aspect-ratio: 1/1;
  object-fit: contain;
  margin: 0 auto 0.8rem;
}

.verdict-table table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.verdict-table th, .verdict-table td {
  padding: 0.6rem;
  border: 1px solid var(--color-border);
  text-align: left;
}

.verdict-table th {
  background: var(--color-bg-alt);
  font-weight: 600;
}

/* ---- FAQs ---- */

.faqs details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  margin-bottom: 0.5rem;
}

.faqs summary {
  cursor: pointer;
  font-weight: 600;
}

.faqs details[open] summary { margin-bottom: 0.5rem; }

/* ---- Lists & pagination ---- */

.link-list {
  list-style: none;
  padding: 0;
  columns: 2;
  gap: 1rem;
}

.link-list li {
  break-inside: avoid;
  margin-bottom: 0.6rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
}

.link-list small {
  display: block;
  color: var(--color-text-light);
  font-size: 0.8rem;
}

@media (max-width: 700px) { .link-list { columns: 1; } }

.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 2rem 0;
  gap: 1rem;
}

/* ---- Footer ---- */

.site-footer {
  background: var(--color-bg-alt);
  padding: 2rem 0 1.5rem;
  margin-top: 4rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.site-footer .disclosure {
  color: var(--color-text-light);
  margin: 0 0 1rem;
}

.footer-nav {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.site-footer .copy {
  color: var(--color-text-light);
  font-size: 0.85rem;
  margin: 0;
}

/* ---- Misc ---- */

.ai-notice {
  background: var(--color-bg-alt);
  padding: 1.5rem;
  border-radius: var(--radius);
  margin: 3rem 0;
}

.static-page h2 { margin-top: 2rem; }

.highlights {
  padding-left: 1.2rem;
}

.search-results .meta { color: var(--color-text-light); }

.error-page { text-align: center; padding: 3rem 0; }


/* ---- Promotions ----
   Generic "Limited-Time Offer" badge for products with has_active_promo=true.
   No numbers shown — Amazon Operating Agreement (April 2026) prohibits stale
   price/discount claims on cached pages. Actual offer details are on Amazon.
*/

.promo-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 0.4rem;
  white-space: nowrap;
}

/* Corner placement for product-card grid (homepage) */
.product-card { position: relative; }
.promo-badge-corner {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  margin-left: 0;
  z-index: 2;
  box-shadow: 0 1px 4px rgba(0,0,0,.15);
}

/* Subtle outline on cards that contain a promo product */
.product-card.has-promo,
.product-card-wide.has-promo,
.compare-card.has-promo {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

/* Product detail page banner */
.promo-banner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin: 0 0 1rem 0;
  font-size: 0.9rem;
}

.promo-banner .promo-text {
  color: var(--color-text);
  flex: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .promo-badge { animation: promo-pulse 2.4s ease-in-out infinite; }
}

@keyframes promo-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.04); }
}