/* =========================================================
   Airport Travel Guide — design tokens
   Visual concept: airport signage & departure boards.
   IATA codes and stats render in a monospace "flip board"
   style; route-lines (thin rule + short dash) replace
   generic underlines/dividers; badges read like gate tags.
   ========================================================= */

:root{
  /* --- brand (fixed by brief) --- */
  --color-primary: #0066FF;
  --color-primary-ink: #0047B3;
  --color-accent: #00B4D8;

  /* --- neutrals: aviation navy, not pure black --- */
  --color-ink: #0F1720;
  --color-ink-soft: #45566E;
  --color-paper: #FFFFFF;
  --color-mist: #F3F6FB;
  --color-line: #E1E8F1;
  --color-line-strong: #C7D3E3;

  /* --- signage accent, used sparingly --- */
  --color-amber: #F0A020;
  --color-amber-ink: #7A4E00;
  --color-success: #158A4A;
  --color-success-bg: #E7F7EF;

  --font-display: 'Manrope', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --radius-card: 16px;
  --radius-chip: 8px;
  --radius-sm: 6px;

  --shadow-card: 0 1px 2px rgba(15,23,32,.06), 0 8px 24px -12px rgba(15,23,32,.14);
  --shadow-pop: 0 12px 32px -8px rgba(15,23,32,.22);

  --max-width: 1180px;

  /* fixed-dark surface: for bands that must stay dark in both themes
     (does not flip in [data-theme="dark"]) */
  --color-band: #0F1720;

  color-scheme: light;
}

[data-theme="dark"]{
  --color-ink: #E8EEF7;
  --color-ink-soft: #A9B8CC;
  --color-paper: #0B1220;
  --color-mist: #121B2B;
  --color-line: #223047;
  --color-line-strong: #2C3D58;
  --color-success-bg: #103322;
  color-scheme: dark;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-paper);
  line-height: 1.55;
  font-size: 16px;
}

h1,h2,h3,h4{
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
  font-weight: 800;
}
h1{ font-size: clamp(2rem, 1.5rem + 2vw, 3.25rem); font-weight: 800; }
h2{ font-size: clamp(1.5rem, 1.3rem + 1vw, 2.25rem); }
h3{ font-size: 1.25rem; }
p{ margin: 0 0 1em; color: var(--color-ink-soft); max-width: 68ch; }
a{ color: var(--color-primary-ink); text-decoration: none; }
a:hover{ text-decoration: underline; }
img{ max-width: 100%; display: block; }
ul{ padding-left: 1.1em; }

:focus-visible{
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.container{
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

.skip-link{
  position: absolute; left: 12px; top: -60px;
  background: var(--color-ink); color: var(--color-paper);
  padding: 10px 16px; border-radius: var(--radius-sm); z-index: 200;
  transition: top .15s ease;
}
.skip-link:focus{ top: 12px; }

/* -------------------- route line (signature divider) -------------------- */
.route-line{
  display: flex; align-items: center; gap: 8px;
  margin: 0 0 28px;
  color: var(--color-ink-soft);
}
.route-line::before{
  content: "";
  height: 2px; flex: 1;
  background: repeating-linear-gradient(90deg, var(--color-line-strong) 0 10px, transparent 10px 16px);
}
.route-line::after{
  content: "";
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-accent);
}
.route-line span{
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  white-space: nowrap;
}

/* -------------------- header / nav -------------------- */
.site-header{
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--color-paper) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.site-header .container{
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 16px;
}
.brand{
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 800; font-size: 1.05rem;
  color: var(--color-ink);
}
.brand:hover{ text-decoration: none; }
.brand-mark{
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(155deg, var(--color-primary), var(--color-accent));
  display: grid; place-items: center; flex-shrink: 0;
}
.brand-mark svg{ width: 19px; height: 19px; }

.main-nav{ display: none; }
.main-nav ul{
  list-style: none; margin: 0; padding: 0;
  display: flex; align-items: center; gap: 4px;
}
.main-nav a{
  color: var(--color-ink-soft); font-size: .93rem; font-weight: 600;
  padding: 8px 12px; border-radius: var(--radius-sm);
}
.main-nav a:hover{ color: var(--color-ink); background: var(--color-mist); text-decoration: none; }
.main-nav a[aria-current="page"]{ color: var(--color-primary-ink); }

.header-actions{ display: flex; align-items: center; gap: 8px; }

.theme-toggle{
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--color-line); background: var(--color-paper);
  display: grid; place-items: center; cursor: pointer; color: var(--color-ink);
}
.theme-toggle:hover{ background: var(--color-mist); }
.theme-toggle svg{ width: 17px; height: 17px; }
[data-theme="dark"] .icon-sun{ display: block; }
[data-theme="dark"] .icon-moon{ display: none; }
.icon-sun{ display: none; }
.icon-moon{ display: block; }

.nav-toggle{
  display: grid; place-items: center;
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  border: 1px solid var(--color-line); background: var(--color-paper);
  cursor: pointer;
}
.nav-toggle svg{ width: 20px; height: 20px; }

@media (min-width: 900px){
  .main-nav{ display: block; }
  .nav-toggle{ display: none; }
}

.mobile-nav{
  display: none;
  border-top: 1px solid var(--color-line);
  background: var(--color-paper);
}
.mobile-nav.is-open{ display: block; }
.mobile-nav ul{ list-style: none; margin: 0; padding: 8px 20px 16px; }
.mobile-nav a{
  display: block; padding: 12px 0; color: var(--color-ink);
  font-weight: 600; border-bottom: 1px solid var(--color-line);
}
@media (min-width: 900px){ .mobile-nav{ display: none !important; } }

/* -------------------- buttons -------------------- */
.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body); font-weight: 700; font-size: .95rem;
  padding: 12px 20px; border-radius: 10px; border: 1px solid transparent;
  cursor: pointer; transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover{ text-decoration: none; }
.btn:active{ transform: translateY(1px); }
.btn-primary{
  background: var(--color-primary); color: #fff;
  box-shadow: 0 6px 16px -6px color-mix(in srgb, var(--color-primary) 60%, transparent);
}
.btn-primary:hover{ background: var(--color-primary-ink); }
.btn-outline{
  background: transparent; border-color: var(--color-line-strong); color: var(--color-ink);
}
.btn-outline:hover{ background: var(--color-mist); }
.btn-block{ width: 100%; }
.btn-sm{ padding: 9px 14px; font-size: .85rem; }

/* -------------------- hero / search -------------------- */
.hero{
  padding: 56px 0 64px;
  background:
    radial-gradient(680px 320px at 88% -10%, color-mix(in srgb, var(--color-accent) 16%, transparent), transparent 70%),
    var(--color-mist);
  border-bottom: 1px solid var(--color-line);
}
.hero-inner{ max-width: 760px; }
.hero .kicker{
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .04em;
  color: var(--color-primary-ink); margin-bottom: 14px;
}
.hero h1{ margin-bottom: .4em; }
.hero p.lead{ font-size: 1.08rem; max-width: 56ch; }

.search-panel{
  margin-top: 28px;
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-pop);
  padding: 10px;
  display: flex; flex-direction: column; gap: 8px;
}
@media (min-width: 640px){
  .search-panel{ flex-direction: row; align-items: center; padding: 8px; }
}
.search-field{
  flex: 1; display: flex; align-items: center; gap: 10px;
  padding: 12px 14px; border-radius: 10px;
}
.search-field svg{ width: 18px; height: 18px; color: var(--color-ink-soft); flex-shrink: 0; }
.search-field input{
  flex: 1; border: none; outline: none; background: transparent;
  font-family: var(--font-body); font-size: .98rem; color: var(--color-ink);
}
.search-field input::placeholder{ color: var(--color-ink-soft); }

/* -------------------- sections -------------------- */
.section{ padding: 56px 0; }
.section-alt{ background: var(--color-mist); }
.section-head{
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 16px; margin-bottom: 26px; flex-wrap: wrap;
}
.section-head h2{ margin: 0; }
.section-head .section-desc{ margin: 6px 0 0; }
.see-all{ font-weight: 700; font-size: .9rem; white-space: nowrap; }

/* -------------------- airport grid / card -------------------- */
.grid{
  display: grid; gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}
.grid-3{ grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid-2{ grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.airport-card{
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex; flex-direction: column;
  transition: box-shadow .15s ease, transform .15s ease;
}
.airport-card:hover{ box-shadow: var(--shadow-pop); transform: translateY(-2px); text-decoration: none; }
.airport-card .thumb{
  height: 118px; position: relative;
  background: linear-gradient(140deg, var(--color-primary), var(--color-accent));
}
.airport-card .code{
  position: absolute; right: 12px; bottom: 10px;
  font-family: var(--font-mono); font-weight: 700; font-size: 1.4rem;
  color: #fff; letter-spacing: .03em;
}
.airport-card .body{ padding: 16px; flex: 1; display: flex; flex-direction: column; gap: 4px; }
.airport-card .city{ font-family: var(--font-display); font-weight: 800; color: var(--color-ink); font-size: 1.02rem; }
.airport-card .name{ font-size: .85rem; color: var(--color-ink-soft); margin: 0; }

/* -------------------- category tiles -------------------- */
.cat-tile{
  display: flex; flex-direction: column; gap: 10px;
  padding: 20px; border-radius: var(--radius-card);
  border: 1px solid var(--color-line); background: var(--color-paper);
  color: var(--color-ink);
}
.cat-tile:hover{ text-decoration: none; border-color: var(--color-primary); }
.cat-tile .icon{
  width: 42px; height: 42px; border-radius: 10px;
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  display: grid; place-items: center; color: var(--color-primary-ink);
}
.cat-tile .icon svg{ width: 22px; height: 22px; }
.cat-tile h3{ margin: 0; font-size: 1rem; }
.cat-tile p{ margin: 0; font-size: .87rem; }

/* -------------------- badges / gate tags -------------------- */
.badge{
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .74rem; font-weight: 700; letter-spacing: .01em;
  padding: 4px 9px 4px 7px; border-radius: var(--radius-chip);
  border-left: 3px solid var(--color-primary);
  background: var(--color-mist); color: var(--color-ink);
}
.badge.badge-shuttle{ border-left-color: var(--color-accent); }
.badge.badge-parking{ border-left-color: var(--color-amber); }
.badge.badge-breakfast{ border-left-color: var(--color-success); }
.badge-row{ display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }

/* -------------------- content cards -------------------- */
.card{
  background: var(--color-paper); border: 1px solid var(--color-line);
  border-radius: var(--radius-card); padding: 20px;
}
.stat-card{
  border: 1px solid var(--color-line); border-radius: var(--radius-sm);
  padding: 14px 16px; background: var(--color-paper);
}
.stat-card .value{ font-family: var(--font-mono); font-weight: 700; font-size: 1.3rem; color: var(--color-ink); }
.stat-card .label{ font-size: .78rem; color: var(--color-ink-soft); margin-top: 2px; }

/* -------------------- hotel card -------------------- */
.hotel-card{
  background: var(--color-paper); border: 1px solid var(--color-line);
  border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card);
  display: flex; flex-direction: column;
}
.hotel-card .thumb{ height: 150px; background: var(--color-mist); position: relative; overflow: hidden; }
.hotel-card .thumb svg{ position: absolute; inset: 0; margin: auto; width: 40px; height: 40px; color: var(--color-line-strong); }
.hotel-card .body{ padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.hotel-card .distance{ font-family: var(--font-mono); font-size: .78rem; color: var(--color-ink-soft); }
.hotel-card h4{ margin: 0; font-family: var(--font-display); font-size: 1.02rem; }
.hotel-card .cta-row{ margin-top: auto; padding-top: 8px; }

/* -------------------- comparison table -------------------- */
.table-wrap{ overflow-x: auto; border: 1px solid var(--color-line); border-radius: var(--radius-sm); }
table.compare{ width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 560px; }
table.compare th, table.compare td{ text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--color-line); }
table.compare thead th{
  font-family: var(--font-display); background: var(--color-mist); font-size: .82rem;
  color: var(--color-ink-soft); font-weight: 700;
}
table.compare tbody tr:last-child td{ border-bottom: none; }
table.compare td.yes{ color: var(--color-success); font-weight: 700; }

/* -------------------- FAQ accordion -------------------- */
.faq{ border-top: 1px solid var(--color-line); }
.faq-item{ border-bottom: 1px solid var(--color-line); }
.faq-item summary{
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 18px 2px; font-family: var(--font-display); font-weight: 700; font-size: 1rem;
  color: var(--color-ink);
}
.faq-item summary::-webkit-details-marker{ display: none; }
.faq-item summary .chev{ width: 18px; height: 18px; flex-shrink: 0; transition: transform .15s ease; color: var(--color-ink-soft); }
svg{ width: 24px; height: 24px; }
.faq-item[open] summary .chev{ transform: rotate(180deg); }
.faq-item .faq-a{ padding: 0 2px 18px; }

/* -------------------- breadcrumbs -------------------- */
.breadcrumbs{ padding: 14px 0; font-size: .83rem; color: var(--color-ink-soft); }
.breadcrumbs ol{ list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; }
.breadcrumbs a{ color: var(--color-ink-soft); }
.breadcrumbs li:not(:last-child)::after{ content: "/"; margin-left: 6px; color: var(--color-line-strong); }
.breadcrumbs li[aria-current] { color: var(--color-ink); }

/* -------------------- airport header (flip-board motif) -------------------- */
.airport-hero{
  background: linear-gradient(150deg, var(--color-ink) 0%, #17263D 100%);
  color: #fff; padding: 40px 0 34px; border-radius: 0 0 var(--radius-card) var(--radius-card);
}
[data-theme="dark"] .airport-hero{ background: linear-gradient(150deg, #000 0%, #101B2C 100%); }
.airport-hero .flex{ display: flex; align-items: flex-start; gap: 22px; flex-wrap: wrap; }
.airport-hero .code-plate{
  font-family: var(--font-mono); font-weight: 700; font-size: 2.6rem;
  border: 2px solid rgba(255,255,255,.35); border-radius: 12px;
  padding: 10px 18px; letter-spacing: .04em; flex-shrink: 0;
  background: rgba(255,255,255,.04);
}
.airport-hero h1{ color: #fff; margin-bottom: .2em; }
.airport-hero p{ color: rgba(255,255,255,.72); margin-bottom: .3em; }
.airport-hero .meta{ font-family: var(--font-mono); font-size: .82rem; color: rgba(255,255,255,.55); }

.quick-facts{ margin-top: -34px; }
.quick-facts .grid{ grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); }
.quick-facts .stat-card{ box-shadow: var(--shadow-card); }

.subnav{
  display: flex; gap: 4px; overflow-x: auto; padding: 14px 0;
  border-bottom: 1px solid var(--color-line); margin-bottom: 8px;
}
.subnav a{
  white-space: nowrap; padding: 8px 14px; border-radius: 999px;
  font-size: .87rem; font-weight: 600; color: var(--color-ink-soft);
  border: 1px solid var(--color-line);
}
.subnav a[aria-current="page"]{ background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.subnav a:hover{ text-decoration: none; border-color: var(--color-primary); }

/* -------------------- two-col layout -------------------- */
.layout-2col{ display: grid; gap: 32px; }
@media (min-width: 960px){
  .layout-2col{ grid-template-columns: 1fr 320px; align-items: start; }
}
.aside-sticky{ position: sticky; top: 88px; display: flex; flex-direction: column; gap: 18px; }

.toc{ font-size: .88rem; }
.toc ol{ list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.toc li{ counter-increment: toc; margin-bottom: 8px; padding-left: 26px; position: relative; }
.toc li::before{
  content: counter(toc); position: absolute; left: 0; top: 0;
  font-family: var(--font-mono); font-size: .74rem; color: var(--color-primary-ink);
  border: 1px solid var(--color-line-strong); border-radius: 4px;
  width: 18px; height: 18px; display: grid; place-items: center;
}

.quick-answer{
  background: var(--color-mist); border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm); padding: 16px 18px;
}
.quick-answer p:last-child{ margin-bottom: 0; }

.cta-box{
  background: linear-gradient(150deg, var(--color-primary), var(--color-primary-ink));
  color: #fff; border-radius: var(--radius-card); padding: 24px;
}
.cta-box h3{ color: #fff; }
.cta-box p{ color: rgba(255,255,255,.82); }
.cta-box .btn-outline{ border-color: rgba(255,255,255,.5); color: #fff; }
.cta-box .btn-outline:hover{ background: rgba(255,255,255,.12); }

/* -------------------- pros/cons -------------------- */
.pros-cons{ display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); }
.pros-cons .card h4{ margin: 0 0 8px; font-size: .95rem; }
.pros-cons ul{ margin: 0; padding-left: 1.1em; font-size: .9rem; color: var(--color-ink-soft); }

/* -------------------- steps (legit sequence content) -------------------- */
.steps{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0; }
.steps li{
  display: flex; gap: 16px; padding: 18px 0;
  border-bottom: 1px solid var(--color-line);
}
.steps li:last-child{ border-bottom: none; }
.steps .num{
  font-family: var(--font-mono); font-weight: 700; color: var(--color-primary-ink);
  border: 1px solid var(--color-line-strong); border-radius: 8px;
  width: 34px; height: 34px; display: grid; place-items: center; flex-shrink: 0;
}

/* -------------------- newsletter -------------------- */
.newsletter{
  background: var(--color-band); color: #fff; border-radius: var(--radius-card);
  padding: 34px; display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between;
}
.newsletter h3{ color: #fff; margin: 0 0 4px; }
.newsletter p{ color: rgba(255,255,255,.7); margin: 0; }
.newsletter form{ display: flex; gap: 8px; flex-wrap: wrap; }
.newsletter input{
  padding: 12px 14px; border-radius: 10px; border: 1px solid rgba(255,255,255,.25);
  background: rgba(255,255,255,.08); color: #fff; min-width: 220px;
}
.newsletter input::placeholder{ color: rgba(255,255,255,.55); }

/* -------------------- footer -------------------- */
.site-footer{ background: var(--color-mist); border-top: 1px solid var(--color-line); padding: 48px 0 24px; margin-top: 40px; }
.footer-grid{ display: grid; gap: 28px; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); margin-bottom: 32px; }
.footer-grid h4{ font-size: .82rem; text-transform: none; color: var(--color-ink); margin: 0 0 12px; }
.footer-grid ul{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-grid a{ color: var(--color-ink-soft); font-size: .88rem; }
.footer-bottom{
  border-top: 1px solid var(--color-line); padding-top: 20px;
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center;
  font-size: .82rem; color: var(--color-ink-soft);
}
.footer-bottom .legal-links{ display: flex; gap: 14px; flex-wrap: wrap; }
.affiliate-disclosure{ font-size: .78rem; color: var(--color-ink-soft); margin-top: 14px; max-width: 80ch; }

/* -------------------- misc -------------------- */
.eyebrow-plain{ font-size: .82rem; color: var(--color-ink-soft); margin-bottom: 6px; }
.pagination{ display: flex; gap: 8px; justify-content: center; margin-top: 32px; }
.pagination a, .pagination span{
  min-width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 8px; border: 1px solid var(--color-line); font-size: .88rem; color: var(--color-ink);
}
.pagination a:hover{ border-color: var(--color-primary); text-decoration: none; }
.pagination .current{ background: var(--color-primary); border-color: var(--color-primary); color: #fff; }

.lazy-img{ background: var(--color-mist); }

.map-placeholder{
  height: 260px; border-radius: var(--radius-card); border: 1px solid var(--color-line);
  background:
    linear-gradient(var(--color-line) 1px, transparent 1px) 0 0/28px 28px,
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px) 0 0/28px 28px,
    var(--color-mist);
  display: grid; place-items: center; color: var(--color-ink-soft); font-size: .88rem;
  position: relative; overflow: hidden;
}
.map-placeholder::after{
  content: "📍"; position: absolute; font-size: 1.6rem; filter: grayscale(1) opacity(.5);
}

@media (max-width: 640px){
  .airport-hero .code-plate{ font-size: 2rem; padding: 8px 14px; }
  .newsletter{ flex-direction: column; align-items: flex-start; }
}