* {
  box-sizing: border-box;
}

:root {
  --page: #f2f6f8;
  --surface: #ffffff;
  --surface-muted: #e8eef2;
  --ink: #0c171d;
  --muted: #5a6d78;
  --line: #d5e0e7;
  --line-strong: rgba(12, 23, 29, 0.14);
  --brand: #0a3a4a;
  --brand-soft: #146b82;
  --accent: #c2410c;
  --price: #0f4a3c;
  --badge: #fef3c7;
  --badge-ink: #92400e;
  --success: #15803d;
  --success-soft: #dcfce7;
  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --radius-control: 0.5rem;
  --radius-card: 0.875rem;
  --shadow-soft: 0 8px 24px rgba(12, 23, 29, 0.06);
  --ring: 0 0 0 3px rgba(20, 107, 130, 0.22);
  font-size: 16px;
}

body {
  margin: 0;
  padding: 1rem;
  background: var(--page);
  color: var(--ink);
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

a {
  color: var(--brand-soft);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.page {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
}

.lesson-nav {
  margin: 0 0 1.5rem;
  padding: 0.75rem;
  background: var(--surface-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
}

.lesson-nav a {
  flex: 1 1 7.5rem;
  padding: 0.55rem 0.7rem;
  background: var(--surface);
  border: 1px solid #9bb4c0;
  border-radius: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.lesson-nav a:hover,
.lesson-nav a[aria-current="page"] {
  background: var(--brand-soft);
  color: #ffffff;
}

.page-header {
  margin: 0 0 1.5rem;
  padding: 2rem;
  background: var(--brand);
  border-radius: var(--radius-card);
  color: #ffffff;
}

.page-header h1,
.page-header p {
  margin: 0;
}

.page-header p {
  margin-top: 0.5rem;
  color: #c9dde6;
}

.panel,
.panel-alt {
  margin: 0 0 1.25rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.panel-alt {
  background: var(--surface-muted);
}

.panel h2,
.panel-alt h2 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
}

.panel h3,
.panel-alt h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.05rem;
}

.panel > p,
.panel-alt > p {
  margin: 0 0 1rem;
}

.help {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.field {
  margin: 0 0 0.9rem;
}

.field label,
.field-label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 700;
  font-size: 0.9rem;
}

.field input,
.field select,
.field textarea,
.book-box input,
.book-box select,
.search-panel input,
.search-panel select {
  width: 100%;
  min-height: 2.6rem;
  padding: 0.5rem 0.7rem;
  border: 1px solid #9bb4c0;
  border-radius: var(--radius-control);
  background: #ffffff;
  color: var(--ink);
  font: inherit;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.book-box input:focus,
.book-box select:focus,
.search-panel input:focus,
.search-panel select:focus {
  border-color: var(--brand-soft);
  box-shadow: var(--ring);
  outline: none;
}

.field textarea {
  min-height: 6rem;
  resize: vertical;
}

.badge {
  display: inline-block;
  width: fit-content;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--badge);
  color: var(--badge-ink);
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-success {
  background: var(--success-soft);
  color: var(--success);
}

.badge-danger {
  background: var(--danger-soft);
  color: var(--danger);
}

.price {
  margin: 0;
  color: var(--price);
  font-size: 1.15rem;
  font-weight: 800;
}

.price-was {
  color: var(--muted);
  text-decoration: line-through;
  font-size: 0.9rem;
}

.btn,
button[type="submit"],
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.6rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--brand-soft);
  border-radius: var(--radius-control);
  background: var(--brand-soft);
  color: #ffffff;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.btn-secondary {
  background: var(--surface);
  color: var(--brand);
  border-color: #9bb4c0;
}

.btn:hover,
button[type="submit"]:hover {
  background: var(--brand);
}

.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;
}

.choice-stack {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.choice-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.choice-line label {
  font-weight: 500;
}

.choice-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0.5rem 0 1rem;
}

/* Agency shell */
.agency-shell {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--surface);
}

.agency-topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding: 0.9rem 1.1rem;
  background: var(--brand);
  color: #ffffff;
}

.agency-brand {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.agency-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
}

.agency-nav a {
  color: #d7ebf2;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.agency-nav a[aria-current="page"],
.agency-nav a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.agency-actions {
  margin-left: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.agency-actions a {
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.agency-main {
  padding: 1.25rem;
}

.agency-footer {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1rem;
  padding: 1.25rem;
  background: var(--surface-muted);
  border-top: 1px solid var(--line);
}

.agency-footer h3 {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
}

.agency-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.agency-footer li {
  margin: 0.2rem 0;
}

.agency-footer a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
}

.agency-footer a:hover {
  color: var(--brand-soft);
  text-decoration: underline;
}

/* Booking search */
.search-panel {
  margin-top: 0.5rem;
  padding: 1.1rem;
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.search-panel fieldset {
  margin: 0 0 1rem;
  padding: 0;
  border: 0;
}

.search-panel legend {
  margin-bottom: 0.4rem;
  font-weight: 700;
}

.search-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0.75rem 1rem;
  align-items: end;
}

.search-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.75rem;
}

/* Fare catalog */
.catalog-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}

.filter-aside {
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.filter-aside h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.filter-aside fieldset {
  margin: 0 0 1rem;
  padding: 0.75rem 0 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.filter-aside legend {
  padding: 0;
  font-weight: 700;
  font-size: 0.9rem;
}

.sort-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1rem;
}

.sort-chips a {
  padding: 0.35rem 0.7rem;
  border: 1px solid #9bb4c0;
  border-radius: 999px;
  background: var(--surface);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ink);
}

.sort-chips a[aria-current="page"] {
  background: var(--brand-soft);
  border-color: var(--brand-soft);
  color: #ffffff;
}

.fare-list {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.fare-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.fare-airline {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 800;
}

.fare-legs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: baseline;
}

.fare-time {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 800;
}

.fare-code {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.fare-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.fare-price-block {
  text-align: left;
}

.fare-price-block .price {
  font-size: 1.35rem;
}

.fare-price-block .btn {
  margin-top: 0.5rem;
}

/* Experience detail */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}

.detail-header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  line-height: 1.25;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: 0.75rem 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.detail-meta span {
  font-weight: 600;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1rem;
}

.itinerary {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: stop;
}

.itinerary > li {
  position: relative;
  margin: 0 0 1rem;
  padding: 0 0 1rem 3rem;
  border-bottom: 1px solid var(--line);
  counter-increment: stop;
}

.itinerary > li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.itinerary > li::before {
  content: counter(stop);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--brand-soft);
  color: #ffffff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.9rem;
}

.itinerary h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.include-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
}

.include-grid h3 {
  margin: 0 0 0.4rem;
}

.include-grid ul {
  margin: 0;
  padding-left: 1.1rem;
}

.book-box,
.stay-summary,
.booking-summary {
  position: static;
  padding: 1.1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.book-box h2,
.stay-summary h2,
.booking-summary h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.book-price {
  margin: 0 0 0.75rem;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--price);
}

.plan-stack {
  display: grid;
  gap: 0.65rem;
  margin: 0.75rem 0 1rem;
}

.plan-card {
  display: grid;
  gap: 0.2rem;
  padding: 0.75rem;
  border: 1px solid #9bb4c0;
  border-radius: var(--radius-control);
  background: #ffffff;
  cursor: pointer;
}

.plan-card:has(input:checked) {
  border-color: var(--brand-soft);
  box-shadow: var(--ring);
}

.plan-card strong {
  font-size: 0.95rem;
}

.plan-card .fee {
  color: var(--price);
  font-weight: 800;
}

/* Stay rooms */
.section-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: 0 0 1.25rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.section-nav a {
  font-weight: 700;
  text-decoration: none;
  color: var(--muted);
}

.section-nav a:hover,
.section-nav a[aria-current="page"] {
  color: var(--brand-soft);
  text-decoration: underline;
}

.stay-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}

.room-list {
  display: grid;
  gap: 1rem;
}

.room-card {
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.room-card h3 {
  margin: 0.35rem 0 0.4rem;
  font-size: 1.15rem;
}

.amenity-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.75rem 0;
  padding: 0;
  list-style: none;
}

.amenity-list li {
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-muted);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
}

.room-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.summary-line {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0.35rem 0;
  font-size: 0.95rem;
}

.summary-line.total {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
  font-size: 1.15rem;
  font-weight: 800;
}

.summary-rooms {
  margin: 0 0 0.75rem;
  padding: 0;
  list-style: none;
}

.summary-rooms li {
  margin: 0 0 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.summary-rooms li:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* Compare table */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
}

.scroll-help {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table caption {
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 800;
  background: var(--surface-muted);
  border-bottom: 1px solid var(--line);
}

.data-table th,
.data-table td {
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: var(--surface-muted);
  font-weight: 700;
}

.data-table tbody th[scope="row"] {
  background: transparent;
  white-space: nowrap;
}

.compare-hotel {
  min-width: 10rem;
}

.compare-hotel .price {
  margin-top: 0.35rem;
}

/* Checkout */
.checkout-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}

.checkout-layout fieldset {
  margin: 0 0 1.25rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.checkout-layout legend {
  padding: 0 0.35rem;
  font-weight: 800;
}

@media (min-width: 40rem) {
  body {
    padding: 1.5rem;
  }

  .agency-actions {
    margin-left: auto;
  }
}

@media (min-width: 56rem) {
  .catalog-layout {
    grid-template-columns: minmax(14rem, 16rem) 1fr;
  }

  .detail-layout,
  .stay-layout,
  .checkout-layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(16rem, 20rem);
  }

  .book-box,
  .stay-summary,
  .booking-summary {
    position: sticky;
    top: 1rem;
  }

  .fare-row {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) auto;
  }

  .fare-price-block {
    text-align: right;
  }
}