/* ==============================================
   AERLINGUSUS.COM v2 — Production-Grade CSS
   Design: Refined Airline Authority
   Aesthetic: Premium travel meets clean editorial
   ============================================== */

/* === VARIABLES === */
:root {
  --teal-900:#003d42;--teal-800:#005a5e;--teal-700:#00757a;--teal-600:#009196;
  --teal-500:#00adb2;--teal-400:#33c4c8;--teal-100:#e0f5f5;--teal-50:#f0fafa;
  --emerald:#00805c;--emerald-light:#e6f5ef;
  --gold:#c7a32a;--gold-dark:#a8871e;--gold-light:#fdf6e3;
  --slate-900:#0f1c24;--slate-800:#1a2e38;--slate-700:#2a4050;
  --slate-600:#3d5565;--slate-500:#56707f;--slate-400:#7a949f;
  --slate-300:#a0b4bd;--slate-200:#c4d2d8;--slate-100:#e2eaed;--slate-50:#f3f6f8;
  --white:#ffffff;--bg:#f7f9fa;
  --red:#c0392b;--orange:#e67e22;
  --shadow-xs:0 1px 2px rgba(0,40,50,.04);
  --shadow-sm:0 1px 4px rgba(0,40,50,.06),0 1px 2px rgba(0,40,50,.04);
  --shadow-md:0 4px 16px rgba(0,40,50,.08),0 1px 4px rgba(0,40,50,.04);
  --shadow-lg:0 8px 32px rgba(0,40,50,.1),0 2px 8px rgba(0,40,50,.06);
  --shadow-xl:0 16px 48px rgba(0,40,50,.12);
  --r-sm:6px;--r-md:10px;--r-lg:16px;--r-xl:24px;
  --max-w:1180px;--nav-h:60px;
  --font-display:'Playfair Display',Georgia,'Times New Roman',serif;
  --font-body:'Plus Jakarta Sans','Segoe UI',system-ui,sans-serif;
  --ease:cubic-bezier(.4,0,.2,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
}

/* === RESET === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);color:var(--slate-800);background:var(--bg);line-height:1.72;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-700);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--emerald)}
button{font-family:inherit;cursor:pointer}

/* === TYPOGRAPHY === */
h1,h2,h3,h4,h5{font-family:var(--font-display);color:var(--slate-900);line-height:1.22;font-weight:700}
h1{font-size:clamp(1.9rem,4.2vw,2.75rem);margin-bottom:1.1rem;letter-spacing:-.02em}
h2{font-size:clamp(1.4rem,3vw,1.95rem);margin:2.8rem 0 1rem;letter-spacing:-.015em}
h3{font-size:clamp(1.1rem,2vw,1.35rem);margin:2rem 0 .7rem}
h4{font-size:1.05rem;margin:1.4rem 0 .5rem}
p{margin-bottom:1rem}
ul,ol{padding-left:1.4rem;margin-bottom:1rem}
li{margin-bottom:.35rem}
strong{font-weight:700;color:var(--slate-900)}
small{font-size:.85rem}

/* === ANIMATIONS === */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideRight{from{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.anim-up{animation:fadeUp .7s var(--ease) both}
.anim-up-d1{animation-delay:.1s}.anim-up-d2{animation-delay:.2s}.anim-up-d3{animation-delay:.3s}
.anim-up-d4{animation-delay:.4s}.anim-up-d5{animation-delay:.5s}.anim-up-d6{animation-delay:.6s}
.anim-fade{animation:fadeIn .6s var(--ease) both}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* === TOP BAR === */
.top-bar{background:var(--slate-900);color:rgba(255,255,255,.85);font-size:.82rem;padding:7px 0;letter-spacing:.01em}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px}
.top-bar a{color:var(--gold);font-weight:600;transition:color .2s}
.top-bar a:hover{color:#fff}
.top-bar .sep{margin:0 10px;opacity:.3}
.tb-badge{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);padding:2px 10px;border-radius:20px;font-size:.75rem;color:rgba(255,255,255,.6)}

/* === HEADER === */
.site-header{background:var(--white);border-bottom:1px solid var(--slate-100);position:sticky;top:0;z-index:200;transition:box-shadow .3s var(--ease)}
.site-header.scrolled{box-shadow:var(--shadow-md)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{width:38px;height:38px;background:linear-gradient(135deg,var(--teal-700),var(--teal-800));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:.85rem;font-family:var(--font-body);letter-spacing:-.02em;box-shadow:0 2px 8px rgba(0,117,122,.25)}
.logo-text{font-family:var(--font-display);font-size:1.3rem;color:var(--slate-900);font-weight:700;letter-spacing:-.02em}
.logo-text span{color:var(--teal-700)}

/* Nav */
.nav{display:flex;list-style:none;gap:2px;margin:0;padding:0}
.nav a{display:block;padding:8px 13px;font-size:.87rem;font-weight:500;color:var(--slate-600);border-radius:var(--r-sm);transition:all .2s var(--ease)}
.nav a:hover,.nav a.active{color:var(--teal-700);background:var(--teal-50)}
.nav-toggle{display:none;background:none;border:none;width:40px;height:40px;font-size:1.4rem;color:var(--slate-700);border-radius:var(--r-sm)}

/* === CONTAINER === */
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}

/* === HERO === */
.hero{background:linear-gradient(160deg,var(--teal-800) 0%,var(--teal-900) 40%,var(--slate-900) 100%);color:#fff;padding:clamp(3.5rem,9vw,6rem) 0 clamp(3rem,8vw,5rem);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-30%;right:-15%;width:700px;height:700px;background:radial-gradient(circle,rgba(0,173,178,.12) 0%,transparent 70%);border-radius:50%;pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-40%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(199,163,42,.08) 0%,transparent 70%);border-radius:50%;pointer-events:none}
/* Decorative grid pattern */
.hero-pattern{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:60px 60px;pointer-events:none}
/* Floating plane SVG decoration */
.hero-plane{position:absolute;right:8%;top:20%;width:180px;height:auto;opacity:.06;animation:float 6s ease-in-out infinite}
.hero .container{position:relative;z-index:2}
.hero h1{color:#fff;font-size:clamp(2.1rem,5vw,3.2rem);max-width:720px;text-shadow:0 2px 20px rgba(0,0,0,.15)}
.hero-sub{font-size:1.08rem;opacity:.88;max-width:620px;line-height:1.75;margin-bottom:2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:2.2rem}

/* === BUTTONS === */
.btn{display:inline-flex;align-items:center;gap:7px;padding:12px 26px;font-size:.92rem;font-weight:600;font-family:var(--font-body);border:none;border-radius:var(--r-md);cursor:pointer;transition:all .25s var(--ease);text-decoration:none;line-height:1.4}
.btn svg{width:18px;height:18px;flex-shrink:0}
.btn-primary{background:var(--emerald);color:#fff;box-shadow:0 2px 12px rgba(0,128,92,.25)}
.btn-primary:hover{background:#006e4e;color:#fff;transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,128,92,.3)}
.btn-outline-light{background:rgba(255,255,255,.08);color:#fff;border:1.5px solid rgba(255,255,255,.25);backdrop-filter:blur(4px)}
.btn-outline-light:hover{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.5);color:#fff}
.btn-secondary{background:var(--teal-50);color:var(--teal-700);border:1px solid var(--teal-100)}
.btn-secondary:hover{background:var(--teal-100);color:var(--teal-800)}
.btn-gold{background:var(--gold);color:#fff;box-shadow:0 2px 12px rgba(199,163,42,.2)}
.btn-gold:hover{background:var(--gold-dark);color:#fff;transform:translateY(-1px)}
.btn-sm{padding:8px 18px;font-size:.84rem}
.btn-lg{padding:15px 32px;font-size:1rem}

/* === SECTIONS === */
.section{padding:clamp(3rem,7vw,5rem) 0}
.section-white{background:var(--white)}
.section-teal{background:var(--teal-50)}
.section-dark{background:var(--slate-900);color:#fff}
.section-dark h2,.section-dark h3{color:#fff}
.section-hdr{text-align:center;margin-bottom:3rem}
.section-hdr h2{margin-bottom:.6rem}
.section-hdr p{color:var(--slate-500);max-width:560px;margin:0 auto;font-size:1.02rem}
.section-hdr .label{display:inline-block;background:var(--teal-50);color:var(--teal-700);padding:4px 14px;border-radius:20px;font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}

/* === CARDS === */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-auto{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.grid-auto-sm{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}

.card{background:var(--white);border:1px solid var(--slate-100);border-radius:var(--r-lg);padding:28px 26px;transition:all .3s var(--ease);text-decoration:none;color:var(--slate-800);display:block;position:relative}
.card:hover{border-color:var(--teal-400);box-shadow:var(--shadow-md);transform:translateY(-4px);color:var(--slate-800)}
.card-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:0}
.card-icon svg{width:26px;height:26px}
.card-icon.teal{background:var(--teal-50);color:var(--teal-700)}
.card-icon.emerald{background:var(--emerald-light);color:var(--emerald)}
.card-icon.gold{background:var(--gold-light);color:var(--gold-dark)}
.card-icon.slate{background:var(--slate-50);color:var(--slate-600)}
.card h3{font-size:1.08rem;margin:0 0 8px;font-family:var(--font-body);font-weight:700}
.card p{font-size:.9rem;color:var(--slate-500);margin:0;line-height:1.6}
.card .card-arrow{position:absolute;right:20px;bottom:20px;width:28px;height:28px;border-radius:50%;background:var(--slate-50);display:flex;align-items:center;justify-content:center;transition:all .3s var(--ease);color:var(--slate-400)}
.card:hover .card-arrow{background:var(--teal-50);color:var(--teal-700);transform:translateX(3px)}

/* === ANSWER BOX === */
.answer-box{background:linear-gradient(135deg,var(--teal-50),var(--emerald-light));border-left:4px solid var(--emerald);padding:22px 26px;border-radius:0 var(--r-md) var(--r-md) 0;margin:1.6rem 0;font-size:1.01rem;line-height:1.75;position:relative}
.answer-box::before{content:'✓';position:absolute;left:-14px;top:18px;width:24px;height:24px;background:var(--emerald);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700}

/* === QUICK FACTS TABLE === */
.facts{background:var(--white);border:1px solid var(--slate-100);border-radius:var(--r-lg);overflow:hidden;margin:1.8rem 0;box-shadow:var(--shadow-xs)}
.facts-hdr{background:linear-gradient(135deg,var(--teal-800),var(--teal-900));color:#fff;padding:14px 22px;font-weight:700;font-size:.92rem;display:flex;align-items:center;gap:8px}
.facts-hdr svg{width:18px;height:18px;opacity:.7}
.facts table{width:100%;border-collapse:collapse}
.facts td{padding:13px 22px;border-bottom:1px solid var(--slate-50);font-size:.9rem;vertical-align:top}
.facts tr:last-child td{border-bottom:none}
.facts td:first-child{font-weight:600;color:var(--teal-800);width:38%;background:var(--slate-50)}
.facts tr:hover td{background:var(--teal-50)}

/* === DISCLOSURE === */
.disclosure{background:var(--gold-light);border:1px solid #e8dbb0;border-radius:var(--r-md);padding:16px 20px;font-size:.86rem;color:var(--slate-600);margin:1.6rem 0;display:flex;gap:12px;align-items:flex-start;line-height:1.65}
.disclosure-icon{width:22px;height:22px;flex-shrink:0;color:var(--gold-dark);margin-top:2px}
.disclosure strong{color:var(--slate-800)}

/* === FAQ === */
.faq-list{margin:2rem 0}
.faq-item{background:var(--white);border:1px solid var(--slate-100);border-radius:var(--r-md);margin-bottom:10px;overflow:hidden;transition:border-color .3s}
.faq-item:hover,.faq-item.open{border-color:var(--teal-400)}
.faq-q{padding:18px 22px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:.94rem;transition:all .2s;user-select:none;gap:12px;color:var(--slate-800)}
.faq-q:hover{background:var(--teal-50)}
.faq-q .faq-icon{width:28px;height:28px;border-radius:50%;background:var(--slate-50);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .3s var(--ease);color:var(--teal-700);font-size:1.1rem;font-weight:300}
.faq-item.open .faq-icon{background:var(--teal-700);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a-inner{padding:0 22px 18px;font-size:.91rem;color:var(--slate-500);line-height:1.72}
.faq-item.open .faq-a{max-height:600px}

/* === BREADCRUMB === */
.breadcrumb{padding:16px 0;font-size:.82rem;color:var(--slate-400);border-bottom:1px solid var(--slate-100);background:var(--white)}
.breadcrumb a{color:var(--slate-400);transition:color .2s}
.breadcrumb a:hover{color:var(--teal-700)}
.breadcrumb .sep{margin:0 7px;opacity:.5}

/* === CONTENT PAGE === */
.content-page{padding:clamp(2.5rem,6vw,4rem) 0}
.content-body{max-width:840px}
.content-body h2{color:var(--teal-800);position:relative;padding-bottom:10px;margin-top:3rem}
.content-body h2::after{content:'';position:absolute;bottom:0;left:0;width:40px;height:3px;background:var(--teal-400);border-radius:2px}
.content-body h3{color:var(--slate-800)}

/* === RELATED LINKS === */
.related{background:var(--slate-50);border:1px solid var(--slate-100);border-radius:var(--r-lg);padding:26px;margin:3rem 0}
.related h3{font-size:1rem;font-family:var(--font-body);font-weight:700;margin:0 0 14px;color:var(--slate-800)}
.related ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.related li a{font-size:.9rem;display:flex;align-items:center;gap:6px;padding:6px 10px;border-radius:var(--r-sm);transition:all .2s}
.related li a:hover{background:var(--teal-50)}
.related li a::before{content:'→';color:var(--teal-400);font-weight:700;font-size:.8rem}

/* === ROUTE CARDS === */
.route-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:1.5rem 0}
.route-card{background:var(--white);border:1px solid var(--slate-100);border-radius:var(--r-md);padding:18px 20px;text-decoration:none;color:var(--slate-800);transition:all .25s var(--ease);display:flex;align-items:center;gap:14px}
.route-card:hover{border-color:var(--teal-400);box-shadow:var(--shadow-sm);transform:translateY(-2px);color:var(--slate-800)}
.route-card .r-icon{width:44px;height:44px;background:var(--teal-50);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--teal-700);flex-shrink:0}
.route-card .r-icon svg{width:22px;height:22px}
.route-card h4{font-size:.93rem;margin:0 0 2px;font-family:var(--font-body);font-weight:700}
.route-card p{font-size:.8rem;color:var(--slate-400);margin:0}

/* === CTA BAND === */
.cta-band{background:linear-gradient(135deg,var(--teal-800),var(--teal-900),var(--slate-900));color:#fff;padding:clamp(3rem,7vw,4.5rem) 0;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:'';position:absolute;top:-50%;right:-20%;width:500px;height:500px;background:radial-gradient(circle,rgba(199,163,42,.08),transparent 70%);border-radius:50%}
.cta-band .container{position:relative;z-index:1}
.cta-band h2{color:#fff;margin-bottom:.6rem}
.cta-band p{opacity:.85;margin-bottom:1.5rem;max-width:520px;margin-left:auto;margin-right:auto}
.phone-big{font-size:clamp(1.6rem,4vw,2.2rem);font-weight:700;font-family:var(--font-display);margin-bottom:.6rem}
.phone-big a{color:var(--gold);transition:color .2s}
.phone-big a:hover{color:#fff}

/* === TRUST BAR === */
.trust-bar{display:flex;gap:24px;flex-wrap:wrap;margin:2.5rem 0;padding:24px;background:var(--white);border:1px solid var(--slate-100);border-radius:var(--r-lg)}
.trust-item{display:flex;align-items:center;gap:10px;font-size:.88rem;font-weight:500;color:var(--slate-600)}
.trust-item .ti{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.trust-item .ti svg{width:20px;height:20px}
.trust-item .ti.teal{background:var(--teal-50);color:var(--teal-700)}
.trust-item .ti.gold{background:var(--gold-light);color:var(--gold-dark)}
.trust-item .ti.emerald{background:var(--emerald-light);color:var(--emerald)}

/* === LAST UPDATED === */
.meta-date{font-size:.82rem;color:var(--slate-400);margin-top:2.5rem;padding-top:1.2rem;border-top:1px solid var(--slate-100);display:flex;align-items:center;gap:6px}

/* === FOOTER === */
.footer{background:var(--slate-900);color:var(--slate-300);padding:4rem 0 0;font-size:.88rem}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px;margin-bottom:3rem}
.footer-col h4{color:#fff;font-family:var(--font-body);font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0}
.footer-col li{margin-bottom:9px}
.footer-col a{color:var(--slate-400);transition:color .2s}
.footer-col a:hover{color:var(--gold)}
.footer-contact{line-height:1.9}
.footer-contact .phone{color:var(--gold);font-weight:700;font-size:1.05rem}
.footer-contact .email{color:var(--teal-400)}
.footer-disc{border-top:1px solid rgba(255,255,255,.06);padding:20px 0;font-size:.79rem;color:var(--slate-500);line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding:16px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;font-size:.79rem;color:var(--slate-500)}
.footer-bottom a{color:var(--slate-500)}
.footer-bottom a:hover{color:var(--gold)}

/* === MOBILE PHONE BAR === */
.mobile-phone-bar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:300;background:var(--emerald);padding:12px 20px;text-align:center;box-shadow:0 -4px 20px rgba(0,0,0,.15)}
.mobile-phone-bar a{color:#fff;font-weight:700;font-size:1.05rem;display:flex;align-items:center;justify-content:center;gap:8px;text-decoration:none}
.mobile-phone-bar svg{width:20px;height:20px}

/* === BACK TO TOP === */
.back-top{position:fixed;bottom:80px;right:20px;width:44px;height:44px;background:var(--teal-700);color:#fff;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);z-index:100;opacity:0;transform:translateY(10px);transition:all .3s var(--ease);cursor:pointer}
.back-top.show{opacity:1;transform:translateY(0)}
.back-top:hover{background:var(--teal-800);transform:translateY(-2px)}
.back-top svg{width:20px;height:20px}

/* === RESPONSIVE === */
@media(max-width:1024px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav{display:none;position:absolute;top:var(--nav-h);left:0;right:0;background:var(--white);flex-direction:column;padding:12px 16px;border-bottom:1px solid var(--slate-100);box-shadow:var(--shadow-lg);border-radius:0 0 var(--r-lg) var(--r-lg)}
  .nav.open{display:flex}
  .nav-toggle{display:flex;align-items:center;justify-content:center}
  .hero h1{font-size:1.75rem}
  .hero-sub{font-size:.95rem}
  .grid-2,.grid-3,.grid-auto{grid-template-columns:1fr}
  .grid-auto-sm{grid-template-columns:1fr}
  .related ul{grid-template-columns:1fr}
  .trust-bar{flex-direction:column;gap:14px}
  .facts td:first-child{width:45%}
  .hero-plane{display:none}
  .tb-badge{display:none}
  .mobile-phone-bar{display:block}
  body{padding-bottom:60px}
  .back-top{bottom:80px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .hero-actions{flex-direction:column}.hero-actions .btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .top-bar .container{justify-content:center;text-align:center}
  .route-grid{grid-template-columns:1fr}
  body{font-size:15px}
}

/* === PRINT === */
@media print{
  .top-bar,.site-header,.cta-band,.footer,.mobile-phone-bar,.back-top{display:none!important}
  .hero{background:#fff!important;color:#000!important;padding:1rem 0!important}
  .hero h1{color:#000!important;text-shadow:none!important}
}