/* ===== AirVip – style.css ===== */
:root{
  --blue:#0B4FD1;
  --blue-dark:#083A9A;
  --blue-light:#E8F0FF;
  --red:#E2001A;
  --red-dark:#B80014;
  --ink:#0F1B3D;
  --text:#3C4A6B;
  --muted:#7A86A5;
  --line:#E3E8F3;
  --bg:#F5F8FF;
  --white:#FFFFFF;
  --radius:16px;
  --shadow:0 10px 30px rgba(15,27,61,.08);
  --shadow-lg:0 24px 60px rgba(15,27,61,.14);
  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --script:"Dancing Script",cursive;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--text);background:var(--white);line-height:1.6;font-size:16px;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;font-weight:700}
.container{width:min(1200px,100% - 32px);margin-inline:auto}
.section{padding:72px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 40px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--blue);font-weight:600;margin-bottom:12px}
.section-head h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:12px}
.section-head p{color:var(--muted)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;border:0;cursor:pointer;transition:.2s;white-space:nowrap}
.btn-red{background:var(--red);color:#fff;box-shadow:0 8px 20px rgba(226,0,26,.25)}
.btn-red:hover{background:var(--red-dark);transform:translateY(-1px)}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(11,79,209,.25)}
.btn-blue:hover{background:var(--blue-dark);transform:translateY(-1px)}
.btn-outline{border:1.5px solid var(--blue);color:var(--blue);background:#fff}
.btn-outline:hover{background:var(--blue-light)}
.btn-sm{padding:9px 16px;font-size:14px}
.icon{width:20px;height:20px;flex:none}

/* ===== Header ===== */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar{background:var(--ink);color:#fff;font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:36px;gap:16px}
.topbar a{display:inline-flex;align-items:center;gap:6px;opacity:.9;white-space:nowrap}
.topbar .right{display:flex;gap:20px}
.topbar a:hover{opacity:1}
.topbar .icon{width:15px;height:15px}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.logo img{height:48px;width:auto}
.menu{display:flex;gap:28px;font-weight:500;color:var(--ink)}
.menu a{position:relative;padding:6px 0}
.menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--red);transition:.25s}
.menu a:hover::after,.menu a.active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:12px}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;align-items:center;justify-content:center}
.burger span{display:block;width:20px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink)}
.burger span::before{top:-6px}.burger span::after{top:6px}

/* ===== Hero ===== */
.hero{position:relative;min-height:600px;display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--ink)}
.hero-bg{position:absolute;inset:0;background:url("../img/hero.jpg") center/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(6,22,66,.85) 0%,rgba(6,22,66,.55) 45%,rgba(6,22,66,.15) 100%)}
.hero .container{position:relative;padding:90px 0 170px}
.hero-eyebrow{font-size:13px;letter-spacing:.2em;text-transform:uppercase;opacity:.85;font-weight:600;margin-bottom:16px}
.hero h1{color:#fff;font-size:clamp(34px,5.4vw,64px);line-height:1.08;max-width:720px;margin-bottom:20px;font-weight:800}
.hero h1 .script{font-family:var(--script);font-weight:700;color:#FF6B7A;font-size:1.15em}
.hero p{max-width:520px;font-size:17px;opacity:.92;margin-bottom:28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:40px;flex-wrap:wrap}
.hero-stats b{display:block;font-size:26px;font-weight:800}
.hero-stats span{font-size:13px;opacity:.8}

/* ===== Search card ===== */
.search-wrap{position:relative;z-index:5;margin-top:-110px}
.search-card{background:#fff;border-radius:20px;box-shadow:var(--shadow-lg);padding:20px}
.trip-type{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}
.trip-type label{cursor:pointer;padding:8px 16px;border-radius:999px;border:1px solid var(--line);font-size:14px;font-weight:500;color:var(--ink);display:flex;align-items:center;gap:6px}
.trip-type input{accent-color:var(--blue)}
.trip-type label:has(input:checked){background:var(--blue-light);border-color:var(--blue);color:var(--blue)}
.search-grid{display:grid;grid-template-columns:1.2fr 1.2fr 1fr 1fr .9fr auto;gap:10px;align-items:end}
.field{display:flex;flex-direction:column;gap:4px;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;min-width:0}
.field:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,79,209,.12)}
.field label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:600;display:flex;align-items:center;gap:6px}
.field label .icon{width:14px;height:14px;color:var(--blue)}
.field select,.field input{border:0;outline:0;background:transparent;font-size:15px;font-weight:600;color:var(--ink);width:100%;appearance:none;-webkit-appearance:none;padding:0}
.field select{background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237A86A5' stroke-width='2.5'><path d='m6 9 6 6 6-6'/></svg>") right center/12px no-repeat;padding-right:16px}
.search-grid .btn{height:100%;min-height:62px;border-radius:12px;justify-content:center;font-size:16px}
.search-note{margin-top:12px;font-size:13px;color:var(--muted);display:flex;gap:8px;align-items:center;flex-wrap:wrap}

/* ===== Benefits ===== */
.benefits{padding:60px 0 20px}
.benefit-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.benefit{text-align:center;padding:20px 12px;border-right:1px solid var(--line)}
.benefit:last-child{border-right:0}
.benefit .ic{width:56px;height:56px;border-radius:50%;background:var(--blue-light);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;color:var(--blue)}
.benefit .ic .icon{width:26px;height:26px}
.benefit h3{font-size:16px;color:var(--blue);margin-bottom:6px}
.benefit p{font-size:14px;color:var(--muted)}

/* ===== Home grid (feature / destinations / side) ===== */
.home-grid{display:grid;grid-template-columns:1.15fr 1fr .95fr;gap:20px}
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.feature{position:relative;min-height:420px;color:#fff;display:flex;flex-direction:column;justify-content:flex-end;padding:36px;background:url("../img/feature.jpg") center/cover}
.feature::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,22,66,.1),rgba(6,22,66,.85))}
.feature>*{position:relative}
.feature .tag{font-size:11px;letter-spacing:.18em;text-transform:uppercase;font-weight:600;opacity:.9;margin-bottom:10px}
.feature h3{color:#fff;font-size:30px;line-height:1.15;margin-bottom:12px}
.feature p{opacity:.9;font-size:15px;max-width:400px;margin-bottom:20px}
.dest-block .block-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.pill{display:inline-flex;align-items:center;gap:6px;background:var(--blue-light);color:var(--blue);font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px}
.link{color:var(--blue);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:4px}
.link:hover{text-decoration:underline}
.dest-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.dest{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:4/3;color:#fff;box-shadow:var(--shadow)}
.dest img{width:100%;height:100%;object-fit:cover;transition:.5s}
.dest:hover img{transform:scale(1.06)}
.dest .info{position:absolute;inset:auto 0 0 0;padding:14px;background:linear-gradient(0deg,rgba(6,22,66,.85),transparent);display:flex;justify-content:space-between;align-items:end}
.dest b{display:block;font-size:16px}
.dest small{opacity:.85;font-size:12px}
.dest .price{background:var(--red);font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}
.side{display:flex;flex-direction:column;gap:20px}
.charter-card{padding:24px;background:linear-gradient(135deg,#EEF4FF,#fff);position:relative;overflow:hidden}
.charter-card img{position:absolute;right:-30px;bottom:-20px;width:190px;opacity:.16;pointer-events:none}
.charter-card .ic{width:44px;height:44px;border-radius:12px;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.charter-card h3{font-size:19px;margin-bottom:6px}
.charter-card p{font-size:14px;color:var(--muted);margin-bottom:14px;position:relative}
.news-card{padding:20px}
.news-card .block-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.news-card h3{font-size:17px}
.news-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);align-items:center}
.news-list li:last-child{border-bottom:0}
.news-list img{width:64px;height:48px;object-fit:cover;border-radius:8px;flex:none}
.news-list a{font-size:14px;font-weight:600;color:var(--ink);line-height:1.35}
.news-list small{display:block;color:var(--muted);font-size:12px;margin-top:2px}

/* ===== Slogan strip ===== */
.slogan{padding:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:56px}
.slogan .container{display:flex;align-items:center;gap:28px;flex-wrap:wrap;justify-content:center}
.slogan .brand{font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);font-weight:600}
.slogan .script{font-family:var(--script);font-size:40px;color:var(--blue);font-weight:700}
.slogan .script b{color:var(--red)}
.slogan p{color:var(--muted);font-size:14px;border-left:1px solid var(--line);padding-left:28px}

/* ===== Routes ===== */
.routes{background:var(--bg)}
.tabs{display:flex;justify-content:center;gap:8px;margin-bottom:28px;flex-wrap:wrap}
.tab{padding:10px 22px;border-radius:999px;border:1px solid var(--line);background:#fff;cursor:pointer;font-weight:600;color:var(--ink);font-size:14px}
.tab.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.route-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.route{background:#fff;border-radius:14px;padding:18px 20px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow);transition:.2s;border:1px solid transparent}
.route:hover{border-color:var(--blue);transform:translateY(-2px)}
.route .codes{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink)}
.route .codes .icon{color:var(--red);width:18px;height:18px}
.route .cities{font-size:13px;color:var(--muted)}
.route .meta{margin-left:auto;text-align:right}
.route .meta small{display:block;color:var(--muted);font-size:12px}
.route .meta b{color:var(--red);font-size:17px}
.route .airline{font-size:12px;color:var(--blue);font-weight:600}
.routes .note{text-align:center;font-size:13px;color:var(--muted);margin-top:20px}

/* ===== Airlines ===== */
.airlines{padding:48px 0}
.airline-row{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.airline{padding:14px 22px;border:1px solid var(--line);border-radius:12px;font-weight:700;color:var(--ink);background:#fff;display:flex;align-items:center;gap:10px;font-size:15px}
.airline i{width:10px;height:10px;border-radius:50%;background:var(--c,var(--blue));display:inline-block}

/* ===== Services ===== */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service{padding:28px;border:1px solid var(--line);border-radius:var(--radius);transition:.25s;background:#fff}
.service:hover{box-shadow:var(--shadow-lg);border-color:transparent;transform:translateY(-4px)}
.service .ic{width:52px;height:52px;border-radius:14px;background:var(--blue-light);color:var(--blue);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.service .ic .icon{width:26px;height:26px}
.service h3{font-size:18px;margin-bottom:8px}
.service p{font-size:14px;color:var(--muted);margin-bottom:12px}
.service ul{font-size:14px;color:var(--text);display:grid;gap:4px}
.service ul li::before{content:"✓";color:var(--red);font-weight:700;margin-right:6px}

/* ===== About ===== */
.about{background:var(--bg)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-img{position:relative}
.about-img img{border-radius:20px;box-shadow:var(--shadow-lg)}
.about-img .badge{position:absolute;left:-20px;bottom:30px;background:#fff;padding:16px 20px;border-radius:14px;box-shadow:var(--shadow-lg);display:flex;gap:12px;align-items:center}
.about-img .badge b{font-size:26px;color:var(--red);display:block;line-height:1}
.about-img .badge span{font-size:13px;color:var(--muted)}
.about-text h2{font-size:clamp(26px,3vw,36px);margin-bottom:16px}
.about-text p{margin-bottom:14px}
.steps{display:grid;gap:14px;margin-top:22px}
.step{display:flex;gap:14px;align-items:flex-start}
.step .n{width:36px;height:36px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none}
.step b{display:block;color:var(--ink)}
.step span{font-size:14px;color:var(--muted)}

/* ===== Booking ===== */
.booking .container{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.booking-info h2{font-size:clamp(26px,3vw,34px);margin-bottom:14px}
.booking-info p{margin-bottom:20px}
.contact-list li{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.contact-list .ic{width:40px;height:40px;border-radius:10px;background:var(--blue-light);color:var(--blue);display:flex;align-items:center;justify-content:center;flex:none}
.contact-list b{display:block;color:var(--ink);font-size:15px}
.contact-list span{font-size:13px;color:var(--muted)}
.form-card{background:#fff;border-radius:20px;box-shadow:var(--shadow-lg);padding:28px;border:1px solid var(--line)}
.form-card h3{font-size:20px;margin-bottom:4px}
.form-card>p{font-size:14px;color:var(--muted);margin-bottom:18px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-grid .full{grid-column:1/-1}
.f{display:flex;flex-direction:column;gap:6px}
.f label{font-size:13px;font-weight:600;color:var(--ink)}
.f input,.f select,.f textarea{padding:12px 14px;border:1px solid var(--line);border-radius:10px;outline:0;background:#fff;font-size:15px}
.f input:focus,.f select:focus,.f textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,79,209,.12)}
.f textarea{min-height:90px;resize:vertical}
.form-card .btn{width:100%;justify-content:center;margin-top:6px;font-size:16px;padding:14px}
.form-msg{margin-top:12px;padding:12px 14px;border-radius:10px;font-size:14px;display:none}
.form-msg.ok{display:block;background:#E8F8EE;color:#127A3A;border:1px solid #BDE8CC}
.form-msg.err{display:block;background:#FDECEE;color:#A8000F;border:1px solid #F5C2C7}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}

/* ===== News section ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.25s}
.post:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.post img{aspect-ratio:16/10;object-fit:cover;width:100%}
.post .body{padding:18px 20px 22px}
.post small{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em;font-weight:600}
.post h3{font-size:17px;margin:8px 0}
.post p{font-size:14px;color:var(--muted)}

/* ===== FAQ ===== */
.faq{background:var(--bg)}
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:10px}
.faq-list details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 20px}
.faq-list summary{cursor:pointer;padding:16px 0;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-list summary::after{content:"+";font-size:22px;color:var(--blue);font-weight:300}
.faq-list details[open] summary::after{content:"–"}
.faq-list details p{padding:0 0 16px;font-size:15px;color:var(--text)}

/* ===== CTA ===== */
.cta{background:linear-gradient(120deg,var(--blue-dark),var(--blue));color:#fff;padding:56px 0}
.cta .container{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta h2{color:#fff;font-size:clamp(24px,3vw,32px);margin-bottom:6px}
.cta p{opacity:.9}
.cta .btn-white{background:#fff;color:var(--blue)}

/* ===== Footer ===== */
.footer{background:var(--ink);color:#B7C2DD;padding:56px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer .logo-box{background:#fff;display:inline-block;padding:8px 14px;border-radius:10px;margin-bottom:16px}
.footer .logo-box img{height:40px}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px;text-transform:uppercase;letter-spacing:.06em}
.footer li{margin-bottom:8px}
.footer a:hover{color:#fff}
.footer .contact li{display:flex;gap:8px;align-items:flex-start}
.footer .contact .icon{width:16px;height:16px;flex:none;margin-top:3px;color:#FF6B7A}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:13px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ===== Floating ===== */
.float{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
.float a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 8px 24px rgba(0,0,0,.25);font-weight:800;font-size:13px}
.float .zalo{background:#0068FF}
.float .phone{background:var(--red);animation:ring 2s infinite}
.float .icon{width:24px;height:24px}
@keyframes ring{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .benefit-grid{grid-template-columns:repeat(3,1fr)}
  .benefit{border-right:0}
  .home-grid{grid-template-columns:1fr 1fr}
  .side{grid-column:1/-1;flex-direction:row}
  .side>*{flex:1}
  .search-grid{grid-template-columns:1fr 1fr 1fr}
  .search-grid .btn{grid-column:1/-1;min-height:54px}
  .route-grid,.service-grid,.news-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-grid,.booking .container{grid-template-columns:1fr}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .menu,.nav-actions .btn,.topbar .right{display:none}
  .burger{display:flex}
  .menu.open{display:flex;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:10px 16px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg)}
  .menu.open a{padding:12px 0;border-bottom:1px solid var(--line)}
  .hero{min-height:auto}
  .hero .container{padding:60px 0 150px}
  .search-grid{grid-template-columns:1fr 1fr}
  .benefit-grid{grid-template-columns:1fr 1fr}
  .home-grid{grid-template-columns:1fr}
  .side{flex-direction:column}
  .feature{min-height:320px;padding:24px}
  .feature h3{font-size:24px}
  .route-grid,.service-grid,.news-grid,.form-grid{grid-template-columns:1fr}
  .slogan .script{font-size:30px}
  .slogan p{border-left:0;padding-left:0;text-align:center}
  .about-img .badge{left:12px;bottom:12px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .search-grid{grid-template-columns:1fr}
  .benefit-grid{grid-template-columns:1fr}
  .hero-stats{gap:20px}
}