/* ==========================================================================
   Book Airline Flight — Design System
   Palette:  --navy #0B1E39 (primary) · --blue #1E5AA8 (secondary)
             --amber #C7860B (accent, used sparingly — CTAs & data highlights)
             --paper #FAFAF7 (background) · --ink #1A2233 (body text)
             --line  #E4E1D8 (hairline rules, boarding-pass perforation)
   Type:     Display  — "Space Grotesk"  (headings, wordmark)
             Body     — "Inter"          (paragraphs, UI)
             Data     — "IBM Plex Mono"  (IATA codes, times, flight numbers)
   Signature: the boarding-pass card — a perforated, ticket-stub shaped
   module used for routes, deals and search results, with tabular IATA
   codes standing in for the "big number" a generic template would use.
   ========================================================================== */

:root{
  --navy:#0B1E39;
  --navy-2:#122A4D;
  --blue:#1E5AA8;
  --blue-light:#EAF1FA;
  --amber:#C7860B;
  --amber-light:#FBF1DE;
  --paper:#FAFAF7;
  --paper-2:#F2F0E9;
  --ink:#1A2233;
  --ink-soft:#4B5568;
  --line:#E4E1D8;
  --line-dark:#26385C;
  --green:#2E7D4F;
  --radius:10px;
  --shadow-sm: 0 1px 2px rgba(11,30,57,.06), 0 1px 1px rgba(11,30,57,.04);
  --shadow-md: 0 6px 20px rgba(11,30,57,.10);
  --max: 1180px;
  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Consolas, monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--navy);margin:0 0 .5em;line-height:1.15;letter-spacing:-0.01em;}
h1{font-size:clamp(1.9rem,4.2vw,3rem);}
h2{font-size:clamp(1.4rem,2.6vw,2rem);}
h3{font-size:1.15rem;}
p{margin:0 0 1em;color:var(--ink-soft);}
.container{max-width:var(--max);margin:0 auto;padding:0 20px;}
.mono{font-family:var(--font-mono);}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
@media (prefers-reduced-motion: reduce){*{animation:none !important;transition:none !important;}}

/* ---------- Skip link / a11y ---------- */
.skip-link{position:absolute;left:-999px;top:auto;background:var(--navy);color:#fff;padding:10px 16px;border-radius:6px;z-index:1000;}
.skip-link:focus{left:16px;top:16px;}

/* ---------- Top utility bar ---------- */
.topbar{background:var(--navy);color:#CBD7EA;font-size:.82rem;}
.topbar .container{display:flex;justify-content:space-between;align-items:center;padding-top:7px;padding-bottom:7px;gap:12px;flex-wrap:wrap;}
.topbar a{color:#EAF1FA;}
.topbar a:hover{color:var(--amber);}
.topbar-phone{font-family:var(--font-mono);letter-spacing:.02em;}

/* ---------- Header ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100;}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px;gap:20px;}
.logo{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:700;font-size:1.18rem;color:var(--navy);}
.logo .mark{width:30px;height:30px;flex:none;}
.logo .mark svg{width:100%;height:100%;}
.main-nav{display:flex;gap:26px;}
.main-nav a{font-size:.94rem;font-weight:500;color:var(--ink);padding:6px 0;border-bottom:2px solid transparent;}
.main-nav a:hover{color:var(--blue);border-color:var(--blue);}
.header-cta{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:.95rem;padding:12px 22px;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:transform .12s ease, box-shadow .12s ease, background-color .12s ease;}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--amber);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:#B27A09;box-shadow:var(--shadow-md);}
.btn-secondary{background:#fff;color:var(--navy);border-color:var(--navy);}
.btn-secondary:hover{background:var(--navy);color:#fff;}
.btn-ghost{background:transparent;color:var(--blue);border-color:var(--blue-light);padding:10px 16px;}
.btn-ghost:hover{background:var(--blue-light);}
.btn-block{width:100%;}
.btn-lg{padding:15px 28px;font-size:1rem;}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(180deg,var(--navy) 0%, var(--navy-2) 100%);color:#fff;position:relative;overflow:hidden;}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 85% 15%, rgba(199,134,11,.14), transparent 45%);pointer-events:none;}
.hero .container{position:relative;padding-top:56px;padding-bottom:64px;}
.hero-eyebrow{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);margin-bottom:14px;}
.hero h1{color:#fff;max-width:16ch;}
.hero-sub{color:#C9D4E6;max-width:52ch;font-size:1.05rem;}
.hero-ctas{display:flex;gap:14px;margin-top:22px;flex-wrap:wrap;}

/* ---------- Flight search card ---------- */
.search-card{background:#fff;border-radius:14px;box-shadow:var(--shadow-md);padding:22px;margin-top:36px;color:var(--ink);}
.search-tabs{display:flex;gap:6px;margin-bottom:16px;}
.search-tab{font-size:.86rem;font-weight:600;padding:7px 14px;border-radius:20px;border:1px solid var(--line);background:var(--paper);color:var(--ink-soft);cursor:pointer;}
.search-tab[aria-selected="true"]{background:var(--navy);color:#fff;border-color:var(--navy);}
.search-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1fr auto;gap:12px;align-items:end;}
.search-field{display:flex;flex-direction:column;gap:6px;min-width:0;}
.search-field label{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft);}
.search-field select,.search-field input{font-family:var(--font-body);font-size:.94rem;padding:10px 11px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--ink);width:100%;}
.search-field select:focus,.search-field input:focus{border-color:var(--blue);}
.search-extra{display:flex;gap:18px;margin-top:14px;flex-wrap:wrap;}
.search-extra label{display:flex;align-items:center;gap:6px;font-size:.86rem;color:var(--ink-soft);}
.search-note{font-size:.78rem;color:var(--ink-soft);margin-top:12px;margin-bottom:0;}

/* ---------- Section shells ---------- */
.section{padding:56px 0;}
.section-tight{padding:36px 0;}
.section-alt{background:var(--paper-2);}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.section-head p{margin:6px 0 0;max-width:56ch;}
.eyebrow{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);margin-bottom:8px;display:block;}

/* ---------- Grid utilities ---------- */
.grid{display:grid;gap:18px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media(max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr);}.grid-3{grid-template-columns:repeat(2,1fr);}}
@media(max-width:600px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}}

/* ---------- Destination / airport / airline cards ---------- */
.dest-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:box-shadow .15s ease, transform .15s ease;}
.dest-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.dest-card-media{aspect-ratio:4/3;background:linear-gradient(135deg,var(--blue-light),var(--paper-2));display:flex;align-items:center;justify-content:center;color:var(--blue);position:relative;}
.dest-card-media .code{font-family:var(--font-mono);font-size:2.1rem;font-weight:700;color:var(--navy);opacity:.85;}
.dest-card-body{padding:16px 16px 18px;}
.dest-card-body h3{margin-bottom:4px;font-size:1.05rem;}
.dest-card-body .state{font-size:.8rem;color:var(--ink-soft);margin-bottom:8px;display:block;}
.dest-card-body p{font-size:.88rem;margin-bottom:10px;}
.dest-card-link{font-size:.85rem;font-weight:600;color:var(--blue);}

/* ---------- Boarding-pass card (signature element) ---------- */
.pass{
  display:grid;grid-template-columns:1fr auto;
  background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;position:relative;
  box-shadow:var(--shadow-sm);
}
.pass:hover{box-shadow:var(--shadow-md);}
.pass-main{padding:18px 20px;}
.pass-route{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-weight:700;font-size:1.5rem;color:var(--navy);}
.pass-route .arrow{color:var(--amber);font-size:1.1rem;}
.pass-cities{display:flex;justify-content:space-between;font-size:.78rem;color:var(--ink-soft);margin-top:2px;max-width:220px;}
.pass-meta{display:flex;gap:16px;margin-top:12px;font-size:.8rem;color:var(--ink-soft);flex-wrap:wrap;}
.pass-meta span strong{color:var(--ink);font-family:var(--font-mono);}
.pass-stub{
  width:118px;background:var(--navy);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:6px;position:relative;padding:14px 10px;text-align:center;
}
.pass-stub::before{
  content:"";position:absolute;left:-9px;top:0;bottom:0;width:18px;
  background-image:radial-gradient(circle 5px, var(--paper) 5px, transparent 5.5px);
  background-repeat:repeat-y;background-position:center;background-size:18px 20px;
}
.pass-stub .stub-label{font-size:.62rem;text-transform:uppercase;letter-spacing:.1em;color:#9FB2CE;}
.pass-stub .stub-cta{font-size:.8rem;font-weight:700;color:var(--amber);}

/* ---------- Feature / "why us" ---------- */
.feature{display:flex;gap:14px;align-items:flex-start;}
.feature .icon{flex:none;width:42px;height:42px;border-radius:9px;background:var(--blue-light);display:flex;align-items:center;justify-content:center;color:var(--blue);}
.feature .icon svg{width:22px;height:22px;}
.feature h3{margin-bottom:4px;font-size:1rem;}
.feature p{font-size:.9rem;margin-bottom:0;}

/* ---------- Steps (how it works) ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step;}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.steps{grid-template-columns:1fr;}}
.step{position:relative;padding-top:6px;}
.step .num{font-family:var(--font-mono);font-size:.78rem;color:var(--amber);font-weight:700;letter-spacing:.05em;display:block;margin-bottom:8px;}
.step h3{font-size:1rem;margin-bottom:6px;}
.step p{font-size:.88rem;}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{cursor:pointer;padding:16px 0;font-weight:600;color:var(--navy);display:flex;justify-content:space-between;align-items:center;gap:14px;list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-family:var(--font-mono);font-size:1.2rem;color:var(--blue);flex:none;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{padding-bottom:16px;margin:0;font-size:.94rem;}

/* ---------- Breadcrumbs ---------- */
.breadcrumbs{font-size:.8rem;color:var(--ink-soft);padding:14px 0;}
.breadcrumbs a{color:var(--blue);}
.breadcrumbs a:hover{text-decoration:underline;}
.breadcrumbs .sep{margin:0 6px;color:var(--line-dark);opacity:.5;}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{background:var(--navy);color:#fff;padding:34px 0 40px;}
.page-hero h1{color:#fff;max-width:38ch;}
.page-hero p{color:#C9D4E6;max-width:60ch;margin-bottom:0;}
.page-hero .iata-badge{display:inline-block;font-family:var(--font-mono);font-size:.75rem;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:var(--amber);padding:4px 10px;border-radius:20px;margin-bottom:12px;letter-spacing:.05em;}

/* ---------- Content prose (guides, legal) ---------- */
.prose{max-width:760px;}
.prose h2{margin-top:1.6em;}
.prose p{font-size:1rem;color:var(--ink-soft);}
.prose ul{list-style:disc;padding-left:1.3em;margin-bottom:1em;}
.prose ul li{margin-bottom:.4em;color:var(--ink-soft);}

/* ---------- Info table ---------- */
.info-table{width:100%;border-collapse:collapse;font-size:.92rem;}
.info-table th,.info-table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);}
.info-table th{width:38%;color:var(--ink-soft);font-weight:600;}
.info-table td{color:var(--ink);}

/* ---------- Tag row (related links) ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:9px;}
.tag{font-size:.83rem;font-weight:500;padding:8px 14px;border-radius:20px;background:#fff;border:1px solid var(--line);color:var(--navy);}
.tag:hover{border-color:var(--blue);color:var(--blue);}

/* ---------- Contact / CTA band ---------- */
.cta-band{background:var(--navy);color:#fff;border-radius:16px;padding:40px 36px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;}
.cta-band h2{color:#fff;margin-bottom:6px;}
.cta-band p{color:#C9D4E6;margin-bottom:0;}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#B9C6DD;margin-top:60px;}
.footer-top{padding:50px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:26px;}
@media(max-width:900px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer-brand .logo{color:#fff;}
.footer-brand p{color:#93A4C2;font-size:.88rem;max-width:34ch;margin-top:10px;}
.footer-col h4{font-family:var(--font-display);color:#fff;font-size:.86rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px;}
.footer-col ul li{margin-bottom:9px;}
.footer-col a{font-size:.88rem;color:#B9C6DD;}
.footer-col a:hover{color:var(--amber);}
.footer-contact{font-size:.88rem;}
.footer-contact .mono{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;font-size:.8rem;color:#7E8FAE;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.footer-disclaimer{font-size:.78rem;color:#7E8FAE;max-width:900px;padding-bottom:6px;}

/* ---------- Mobile nav & responsive search ---------- */
@media(max-width:900px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .search-grid{grid-template-columns:1fr 1fr;}
  .search-grid .btn{grid-column:1 / -1;}
  .hero-ctas .btn{flex:1 1 auto;}
  .pass{grid-template-columns:1fr;}
  .pass-stub{width:100%;flex-direction:row;justify-content:space-between;padding:10px 18px;}
  .pass-stub::before{display:none;}
}
@media(max-width:600px){
  .search-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}

/* ---------- Utility ---------- */
.mt-0{margin-top:0;}
.text-center{text-align:center;}
.small{font-size:.85rem;color:var(--ink-soft);}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}