/* ============================================================
   Design system — flat "modernist poster" identity: warm paper
   background, sharp zero-radius edges, thick rule dividers,
   bold geometric Archivo type. Distinct from typical rounded
   SaaS-blue travel sites.
   ============================================================ */
@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url("../fonts/archivo-vietnamese.woff2") format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url("../fonts/archivo-latin-ext.woff2") format('woff2');
  unicode-range: U+0100-02BA, U+1E00-1E9F, U+2020, U+2113;
}
@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url("../fonts/archivo-latin.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+2000-206F, U+20AC, U+2122;
}

:root{
  --navy:#201e1d;--blue:#ec3013;--violet:#c94b39;--soft-blue:#ffe0d9;
  --soft-violet:#fff2ef;--bg:#f3f2f2;--white:#fff;--border:#201e1d;
  --text:#201e1d;--muted:#66625f;--green:#1f7a4d;
  --shadow:0 3px 10px rgba(32,30,29,.16);--radius:0px;
  --font-display:'Archivo',system-ui,sans-serif;--font-body:'Archivo',system-ui,sans-serif;--font-mono:'IBM Plex Mono',monospace;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-body);background:var(--bg);color:var(--text);font-size:15px;line-height:1.55}
h1,h2,h3,.section-title,.logo,.card h3,.panel h2,.panel h3,.cta h2,.stat strong,.footer h4{font-family:var(--font-display);font-weight:800;letter-spacing:-0.015em}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.rule{height:2px;background:var(--navy);border:0;margin:0}

/* header */
.header{background:var(--bg);position:sticky;top:0;z-index:20;border-bottom:2px solid var(--navy)}
.nav{display:flex;align-items:center;gap:24px;padding:14px 0}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;color:var(--navy);font-size:19px;text-decoration:none}
.logo-mark{width:10px;height:10px;background:var(--blue);display:inline-block;flex-shrink:0}
.tag{display:block;font-size:8px;font-weight:500;color:var(--muted);letter-spacing:.2px}
.menu{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:14px}
.menu a{color:var(--navy);text-decoration:none}
.menu a:hover{color:var(--blue)}
.mobile-toggle{display:none;background:none;border:0;font-size:22px;cursor:pointer;color:var(--navy)}
@media(max-width:760px){
  .menu{position:absolute;top:56px;left:0;right:0;background:var(--bg);border-bottom:2px solid var(--navy);flex-direction:column;align-items:flex-start;padding:16px 24px;gap:16px;display:none;z-index:20}
  .menu.mobile-open{display:flex}
  .menu .btn{width:100%;justify-content:center}
  .mobile-toggle{display:block}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;text-decoration:none;font-family:var(--font-display);font-weight:800;font-size:14px;padding:14px 26px;border:2px solid var(--navy);background:transparent;color:var(--navy)}
.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff}
.btn-primary:hover{background:var(--navy);border-color:var(--navy)}
.btn-light{background:transparent;border-color:var(--navy);color:var(--navy)}
.btn-light:hover{background:var(--navy);color:#fff}

/* hero */
.hero{background:var(--bg);padding:64px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);border:2px solid var(--blue);padding:6px 14px;margin-bottom:20px}
.hero h1{font-family:var(--font-display);font-weight:800;font-size:clamp(38px,5.6vw,64px);line-height:1.05;letter-spacing:-.02em;margin:0 0 20px}
.hero h1 span{color:var(--blue)}
.hero p{font-size:17px;line-height:1.65;max-width:46ch;opacity:.85;margin:0 0 24px}
.trust-row{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--navy)}
.trust-row span{display:flex;align-items:center;gap:6px}
.hero-photo{border:2px solid var(--navy)}
.hero-photo img{width:100%;height:340px;object-fit:cover;display:block}

/* search card */
.search-card{background:var(--white);border:2px solid var(--navy);padding:6px;margin-top:36px}
.tabs{display:flex;gap:0;border-bottom:2px solid var(--navy);margin-bottom:14px}
.tab{flex:0 0 auto;padding:10px 20px;background:none;border:none;font-family:var(--font-display);font-weight:800;font-size:13px;color:var(--muted);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-2px}
.tab.active{color:var(--blue);border-bottom-color:var(--blue)}
.form-grid{display:grid;grid-template-columns:1.2fr 1.2fr 1fr .8fr auto;gap:14px;align-items:end;padding:0 10px 10px}
.field label{display:block;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.04em;margin:0 0 7px}
.field input,.field select{width:100%;height:46px;border:2px solid var(--navy);padding:0 12px;font-size:13px;outline:none;background:#fff;color:var(--text);font-family:var(--font-body)}
.field input:focus,.field select:focus{border-color:var(--blue)}
@media(max-width:900px){.form-grid{grid-template-columns:1fr}}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--navy);border-bottom:2px solid var(--navy)}
.stat{padding:32px 20px;border-right:2px solid var(--navy)}
.stat:last-child{border-right:none}
.stat strong{display:block;font-size:clamp(26px,3.2vw,40px);color:var(--blue);margin-bottom:8px;letter-spacing:-.02em}
.stat span{font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
@media(max-width:700px){.stats{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-right:none}}

.section{padding:64px 0}
.section-title{font-size:clamp(24px,3vw,32px);letter-spacing:-.015em;margin:0 0 10px}
.section-sub{margin:0 0 26px;color:var(--muted);font-size:14.5px}

/* numbered rows - used where content IS a real sequence (features list, steps) */
.rows{border-top:2px solid var(--navy)}
.row-item{display:grid;grid-template-columns:70px minmax(0,300px) 1fr;gap:24px;align-items:baseline;padding:26px 0;border-bottom:2px solid var(--navy)}
.row-num{font-family:var(--font-display);font-weight:800;font-size:14px;color:var(--blue)}
.row-item h3{font-size:20px;margin:0}
.row-item p{font-size:14.5px;color:var(--muted);margin:0;max-width:52ch}
@media(max-width:700px){.row-item{grid-template-columns:1fr}.row-num{display:none}}

.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--navy);border:2px solid var(--navy)}
.card{background:#fff;padding:24px}
.icon{width:20px;height:20px;color:var(--blue);margin-bottom:14px;font-size:20px}
.card h3{font-size:17px;margin:0 0 8px}
.card p{font-size:13px;line-height:1.6;color:var(--muted);margin:0}
@media(max-width:900px){.cards-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.cards-4{grid-template-columns:1fr}}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--navy);border:2px solid var(--navy)}
.card.step{background:#fff;padding:24px}
.step-no{font-family:var(--font-display);font-weight:800;color:var(--blue);font-size:13px;margin-bottom:10px}
@media(max-width:760px){.steps{grid-template-columns:1fr}}

.reviews{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--navy);border:2px solid var(--navy)}
.card.review{background:#fff;padding:22px}
.review-video{height:100px;background:var(--soft-blue);display:grid;place-items:center;font-size:26px;color:var(--blue);margin-bottom:14px}
.stars{color:var(--blue);font-size:12px;letter-spacing:2px;margin-bottom:8px}
.review p{font-size:13px;line-height:1.55}
.review small{color:var(--muted);font-size:11.5px;letter-spacing:.03em}
@media(max-width:900px){.reviews{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.reviews{grid-template-columns:1fr}}

.quote-block{padding:24px 0;border-top:2px solid var(--navy)}
.quote-block:last-child{border-bottom:2px solid var(--navy)}
.quote-block blockquote{margin:0;font-size:16.5px;line-height:1.55;max-width:60ch}
.quote-block p{margin:10px 0 0;font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}

.cta{background:var(--blue);color:#fff;padding:56px 44px;display:flex;justify-content:space-between;align-items:center;gap:25px;flex-wrap:wrap}
.cta h2{margin:0 0 8px;font-size:clamp(24px,3.4vw,34px);color:#fff}
.cta p{margin:0;color:#ffe3dc;font-size:14px}
.cta .btn-light{background:#fff;color:var(--blue);border-color:#fff}
.cta .btn-light:hover{background:var(--navy);color:#fff;border-color:var(--navy)}

.footer{background:var(--navy);color:#fff;padding:50px 0 25px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:35px}
.footer h4{margin:0 0 14px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;opacity:.7}
.footer a,.footer p{display:block;color:#d8d5d3;font-size:13px;margin:8px 0;text-decoration:none}
.footer a:hover{color:var(--soft-blue)}
.copyright{border-top:2px solid rgba(255,255,255,.15);margin-top:35px;padding-top:18px;color:#9c9895;font-size:11px;line-height:1.7}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}}

/* ---- shared: checkout flow, ticket, faq, contact, admin, booking list ---- */
.checkout{padding:48px 0}
.panel{background:#fff;border:2px solid var(--navy);padding:28px}
.fields-2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.checkout-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:24px}
@media(max-width:800px){.checkout-grid{grid-template-columns:1fr}.fields-2{grid-template-columns:1fr}}
.summary-row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border)}
.summary-row:last-child{border-bottom:none}

.field{margin-top:14px}
.field:first-child{margin-top:0}
input,select,textarea{font-family:var(--font-body)}

.stamp{display:inline-flex;align-items:center;justify-content:center;border:3px solid currentColor;padding:10px 22px;font-family:var(--font-display);font-weight:800;font-size:14px;letter-spacing:.06em;text-transform:uppercase;transform:rotate(-6deg);color:var(--blue)}
.stamp.stamp-green{color:var(--green)}
.doc-card{background:#fff;border:2px solid var(--navy);padding:20px;position:relative}
.doc-card .stamp{position:absolute;top:16px;right:16px}

.ticket{background:#fff;border:2px solid var(--navy);max-width:520px}
.ticket-top{background:var(--navy);color:#fff;padding:18px 22px;display:flex;justify-content:space-between;align-items:center}
.ticket-top .status{background:var(--blue);padding:5px 12px;font-size:11px;font-weight:800}
.ticket-body{padding:22px}
.ticket-route{display:flex;align-items:center;gap:16px;margin:16px 0}
.ticket-code{font-size:28px;font-weight:800;color:var(--navy)}
.ticket-path{flex:1;height:2px;background:repeating-linear-gradient(90deg,var(--border) 0 6px,transparent 6px 12px);position:relative}
.ticket-path:after{content:"✈";position:absolute;right:0;top:-11px;color:var(--blue)}
.ticket-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:16px}
.ticket-grid .lbl{font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px}
.ticket-grid .val{font-size:13.5px;font-weight:700;color:var(--navy)}
.ticket-note{border-top:1px dashed var(--border);padding-top:14px;font-size:11.5px;color:var(--muted)}

.info-box{background:var(--soft-blue);border:2px solid var(--blue);padding:14px 16px;display:flex;gap:10px;font-size:12.5px;color:var(--navy);margin-top:16px}
.faq-list .faq-item{margin-bottom:0;border-bottom:2px solid var(--navy);padding:16px 0}
.faq{border-top:2px solid var(--navy)}
.faq-item{border-bottom:2px solid var(--navy);padding:16px 0}
.faq-q{cursor:pointer;font-weight:800;font-family:var(--font-display)}
.faq-q span.plus{float:right;color:var(--blue);font-weight:800}
.faq-item.open .faq-q span.plus{transform:rotate(45deg);display:inline-block}
.faq-a{display:none;margin-top:10px;color:var(--muted);font-size:13.5px;line-height:1.6}
.faq-item.open .faq-a{display:block}

.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:24px}
.contact-info-item{display:flex;gap:12px;padding:14px 0}
.contact-info-item .ic{width:38px;height:38px;background:var(--soft-blue);color:var(--blue);display:grid;place-items:center;flex-shrink:0}
.contact-info-item b{display:block;font-size:13.5px;color:var(--navy)}
.contact-info-item span{font-size:12.5px;color:var(--muted)}
textarea{width:100%;border:2px solid var(--navy);padding:12px;font-size:13px;min-height:110px;resize:vertical;outline:none}
textarea:focus{border-color:var(--blue)}

.booking-row{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid var(--navy);padding:16px 4px;gap:14px;flex-wrap:wrap}
.booking-row:last-child{border-bottom:none}
.booking-route{font-weight:800;color:var(--navy);font-size:14px;font-family:var(--font-display)}
.booking-meta{font-size:12px;color:var(--muted);margin-top:3px}
.status-pill{font-size:11px;font-weight:800;padding:5px 12px;background:var(--soft-blue);color:var(--green)}

.progress{display:flex;align-items:center;justify-content:center;gap:0;margin:0 auto 30px;max-width:520px}
.progress-step{display:flex;align-items:center;gap:8px;flex:1}
.progress-step:last-child{flex:initial}
.progress-num{width:26px;height:26px;display:grid;place-items:center;font-size:11px;font-weight:800;background:#e2e0df;color:var(--muted);flex-shrink:0}
.progress-num.active{background:var(--blue);color:#fff}
.progress-num.done{background:var(--green);color:#fff}
.progress-label{font-size:11.5px;font-weight:800;color:var(--muted);white-space:nowrap;font-family:var(--font-display)}
.progress-label.active{color:var(--navy)}
.progress-line{height:2px;background:var(--navy);flex:1;margin:0 8px;min-width:16px}
.progress-line.done{background:var(--green)}
@media(max-width:700px){.progress-label{display:none}.contact-grid{grid-template-columns:1fr}.ticket-grid{grid-template-columns:1fr 1fr}}

.sidebar-link{display:block;padding:13px 12px;color:#e5e2e0;font-size:13px;text-decoration:none;margin-bottom:2px}
.sidebar-link:hover,.sidebar-link.active{background:rgba(255,255,255,.1);color:#fff}