:root {
  --color-primary: #ff8c42;
  --color-primary-dark: #e06b1f;
  --color-text: #222222;
  --color-text-light: #717171;
  --color-border: #dddddd;
  --color-bg: #ffffff;
  --max-width: 1760px;
  --radius: 12px;
  --shadow-card: 0 6px 16px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

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

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

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "Poppins", sans-serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary);
  flex-shrink: 0;
}

.brand img {
  height: 32px;
  width: auto;
}

.search-bar {
  flex: 1;
  max-width: 480px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 8px 8px 20px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.search-bar input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 14px;
  min-width: 0;
}

.search-bar button {
  background: var(--color-primary);
  border: none;
  color: white;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.header-right {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--color-text-light);
}

/* ---------- Categories ---------- */
.categories {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 40px;
  display: flex;
  gap: 12px;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
}

.category-chip {
  flex-shrink: 0;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  font-size: 14px;
  color: var(--color-text);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.category-chip:hover {
  border-color: var(--color-text);
}

.category-chip.active {
  background: var(--color-text);
  color: white;
  border-color: var(--color-text);
}

/* ---------- Listing grid ---------- */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 40px 60px;
}

.results-summary {
  color: var(--color-text-light);
  font-size: 14px;
  margin-bottom: 16px;
}

.listing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 28px 20px;
}

.listing-card {
  display: block;
  cursor: pointer;
}

.listing-card .thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  overflow: hidden;
  background: #eee;
}

.listing-card .thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.25s ease;
}

.listing-card:hover .thumb-wrap img {
  transform: scale(1.03);
}

.superhost-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: white;
  color: var(--color-text);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.listing-info {
  padding-top: 10px;
}

.listing-info .row-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
}

.rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 400;
  flex-shrink: 0;
}

.rating .star {
  color: var(--color-text);
}

.listing-location {
  color: var(--color-text-light);
  font-size: 14px;
  margin-top: 2px;
}

.listing-meta {
  color: var(--color-text-light);
  font-size: 14px;
}

.listing-price {
  margin-top: 6px;
  font-size: 15px;
}

.listing-price strong {
  font-weight: 600;
}

.empty-state {
  text-align: center;
  color: var(--color-text-light);
  padding: 80px 20px;
  font-size: 16px;
}

/* ---------- Detail page ---------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.back-link:hover {
  text-decoration: underline;
}

.detail-title {
  font-size: 26px;
  font-weight: 600;
  margin: 0 0 8px;
}

.detail-subrow {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.detail-subrow .dot {
  color: var(--color-text-light);
}

.detail-subrow .underline {
  text-decoration: underline;
}

.gallery {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: repeat(2, 1fr);
  gap: 8px;
  border-radius: var(--radius);
  overflow: hidden;
  height: 480px;
  margin-bottom: 32px;
}

.gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}

.gallery .main-img {
  grid-row: span 2;
}

.detail-layout {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 60px;
  align-items: start;
}

.host-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
}

.host-row h2 {
  font-size: 18px;
  margin: 0 0 4px;
}

.host-row .host-sub {
  color: var(--color-text-light);
  font-size: 14px;
}

.host-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}

.detail-section {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
  line-height: 1.6;
}

.detail-section h3 {
  font-size: 18px;
  margin: 0 0 12px;
}

.amenities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.amenity-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
}

.amenity-item .icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.booking-card {
  position: sticky;
  top: 90px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.booking-price {
  font-size: 20px;
  margin-bottom: 12px;
}

.booking-price .per-night {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-light);
}

.booking-card .rating {
  font-size: 14px;
  margin-bottom: 16px;
}

.reserve-btn {
  width: 100%;
  padding: 14px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
}

.reserve-btn:hover {
  background: var(--color-primary-dark);
}

.reserve-note {
  text-align: center;
  color: var(--color-text-light);
  font-size: 13px;
  margin-top: 12px;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 40px;
  text-align: center;
  color: var(--color-text-light);
  font-size: 13px;
}

@media (max-width: 900px) {
  .header-inner {
    padding: 12px 20px;
  }
  .search-bar {
    display: none;
  }
  .categories,
  main {
    padding-left: 20px;
    padding-right: 20px;
  }
  .gallery {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    height: auto;
  }
  .gallery img {
    height: 220px;
  }
  .gallery .main-img {
    grid-row: auto;
    height: 260px;
  }
  .gallery img:nth-child(n + 4) {
    display: none;
  }
  .detail-layout {
    grid-template-columns: 1fr;
  }
  .booking-card {
    position: static;
  }
  .amenities-grid {
    grid-template-columns: 1fr;
  }
}