/* ==========================================================================
   EasyViet Travel — front-end design system
   Palette: charcoal navy + terracotta/gold, serif display + sans body.
   ========================================================================== */
:root{
  --cream:#FDFCF9;
  --cream-soft:#F7F4EC;
  --charcoal:#152A4E;
  --charcoal-soft:#5B6473;
  --terracotta:#B8923D;
  --terracotta-dark:#94742F;
  --terracotta-tint:#F3EAD3;
  --gold-ink:#6E5522;
  --line:#E7E1D3;
  --danger:#B3413B;
  --danger-tint:#F7E3E1;
  --max:1240px;
  --serif:'Fraunces', Georgia, serif;
  --sans:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--cream);
  color:var(--charcoal);
  font-family:var(--sans);
  font-weight:400;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px;}
@media (max-width:640px){.wrap{padding:0 20px;}}

h1,h2,h3,h4{font-family:var(--serif);font-weight:500;margin:0;color:var(--charcoal);letter-spacing:-0.01em;}
h1{font-size:64px;line-height:1.04;letter-spacing:-0.02em;}
h2{font-size:40px;line-height:1.12;}
h3{font-size:26px;line-height:1.25;}
h4{font-size:19px;line-height:1.3;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
.lede{font-size:19px;line-height:1.7;color:var(--charcoal-soft);font-weight:400;}
.eyebrow{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--gold-ink);
  font-weight:700;
  display:inline-block;
  margin-bottom:16px;
}
@media (max-width:768px){
  h1{font-size:40px;}
  h2{font-size:30px;}
  h3{font-size:22px;}
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans);font-size:12.5px;font-weight:600;
  letter-spacing:0.11em;text-transform:uppercase;
  padding:16px 30px;border-radius:2px;border:1px solid transparent;
  cursor:pointer;transition:all .25s ease;white-space:nowrap;
}
.btn-primary{background:var(--terracotta);color:var(--charcoal);border-color:var(--terracotta);font-weight:700;}
.btn-primary:hover{background:var(--terracotta-dark);border-color:var(--terracotta-dark);color:#fff;}
.btn-outline{background:transparent;color:var(--charcoal);border-color:var(--charcoal);}
.btn-outline:hover{background:var(--charcoal);color:var(--cream-soft);}
.btn-outline.on-dark{color:var(--cream-soft);border-color:rgba(251,248,243,.6);}
.btn-outline.on-dark:hover{background:var(--cream-soft);color:var(--charcoal);}
.btn-ghost{background:transparent;color:var(--charcoal);border:none;padding:4px 0;letter-spacing:0.08em;position:relative;font-size:13px;font-weight:600;cursor:pointer;}
.btn-ghost:after{content:'';position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:currentColor;}
.btn-ghost.terracotta{color:var(--gold-ink);}
.btn[disabled]{opacity:.6;cursor:default;}
.btn-block{width:100%;justify-content:center;}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;background:var(--charcoal);
  border-bottom:1px solid rgba(255,255,255,.14);color:#fff;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:84px;}
.logo{font-family:var(--serif);font-size:22px;font-weight:600;letter-spacing:0.01em;color:#fff;}
.logo span{color:var(--terracotta);}
.main-nav{display:flex;align-items:center;gap:36px;}
.main-nav > ul{display:flex;gap:36px;}
.main-nav a.nav-link{
  font-size:13.5px;font-weight:500;letter-spacing:0.03em;color:rgba(255,255,255,.86);
  padding:8px 0;border-bottom:1px solid transparent;background:none;border-top:none;border-left:none;border-right:none;cursor:pointer;font-family:var(--sans);
}
.main-nav a.nav-link:hover, .main-nav li.open > a.nav-link, .main-nav a.nav-link.active{border-color:var(--terracotta);color:var(--terracotta);}
.nav-item{position:relative;}
.header-right{display:flex;align-items:center;gap:22px;}
.hotline{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#fff;}
.hotline svg{width:16px;height:16px;stroke:var(--terracotta);}
.header-cta{display:none;}
@media (min-width:1080px){.header-cta{display:inline-flex;}}
.burger{display:none;background:none;border:none;cursor:pointer;padding:6px;}
.burger span{display:block;width:22px;height:1.5px;background:#fff;margin:5px 0;}
@media (max-width:1079px){
  .main-nav{display:none;}
  .hotline .hl-text{display:none;}
  .burger{display:block;}
  .main-nav.mobile-open{
    display:block;position:absolute;top:100%;left:0;right:0;
    background:var(--cream);padding:12px 32px 32px;max-height:calc(100vh - 84px);overflow-y:auto;z-index:99;
    box-shadow:0 16px 28px rgba(38,34,32,.1);border-bottom:1px solid var(--line);
  }
  .main-nav.mobile-open > ul{flex-direction:column;gap:0;}
  .main-nav.mobile-open .nav-link{display:block;padding:18px 0;border-bottom:1px solid var(--line);font-size:18px;font-family:var(--serif);color:var(--charcoal);}
  .main-nav.mobile-open .nav-item .mega{display:none !important;}
  .main-nav.mobile-open .header-cta-mobile{display:inline-flex;margin-top:20px;}
}

/* Mega menu */
.mega{
  position:absolute;top:100%;left:50%;transform:translateX(-50%);
  width:min(520px, 86vw);
  background:var(--cream-soft);border:1px solid var(--line);color:var(--charcoal);
  box-shadow:0 24px 48px rgba(38,34,32,.12);
  padding:28px 32px;display:none;
  margin-top:1px;max-height:70vh;overflow-y:auto;
}
.nav-item.open .mega{display:block;}
.mega-col-label{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--charcoal-soft);margin-bottom:16px;}
.mega-links{display:flex;flex-direction:column;gap:4px;}
.mega-links a{font-family:var(--serif);font-size:17px;padding:7px 0;border-top:1px solid var(--line);}
.mega-links a:first-child{border-top:none;}
.mega-links a:hover{color:var(--gold-ink);}
.mega-links .mega-foot{font-family:var(--sans);font-size:13px;font-weight:600;color:var(--gold-ink);margin-top:14px;border-top:none;padding-top:0;}

/* Illustration / photo frame */
.illus{position:relative;overflow:hidden;background:var(--terracotta-tint);border-radius:2px;}
.illus img{width:100%;height:100%;object-fit:cover;display:block;}
.illus svg{width:100%;height:100%;object-fit:cover;display:block;}
.illus .cap{position:absolute;left:14px;bottom:12px;color:#fff;font-size:11px;letter-spacing:.08em;text-transform:uppercase;opacity:.85;text-shadow:0 1px 6px rgba(0,0,0,.4);}

/* Hero */
.hero{position:relative;height:88vh;min-height:560px;display:flex;align-items:flex-end;overflow:hidden;}
.hero .illus{position:absolute;inset:0;border-radius:0;}
.hero .illus img{animation:kenburns 26s ease-in-out infinite alternate;}
@keyframes kenburns{from{transform:scale(1);}to{transform:scale(1.09);}}
.hero-scrim{position:absolute;inset:0;background:linear-gradient(0deg, rgba(20,16,13,.62) 0%, rgba(20,16,13,.06) 55%, rgba(20,16,13,.18) 100%);}
.hero-content{position:relative;z-index:2;color:var(--cream-soft);padding-bottom:72px;width:100%;}
.hero-content .eyebrow{color:var(--cream-soft);opacity:.85;}
.hero-content h1{color:#fff;max-width:820px;}
.hero-content .lede{color:rgba(251,248,243,.85);max-width:520px;margin:20px 0 32px;}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;}
.page-hero{height:46vh;min-height:320px;}

/* Search box on home hero */
.hero-search{
  position:relative;z-index:2;background:rgba(21,42,78,.72);backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.18);padding:22px;display:grid;
  grid-template-columns:1.4fr 1.4fr auto;gap:14px;margin-top:32px;max-width:820px;
}
@media (max-width:760px){.hero-search{grid-template-columns:1fr;}}
.hero-search label{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.7);margin-bottom:6px;font-weight:600;}
.hero-search select,.hero-search input{
  width:100%;padding:12px 12px;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);
  color:#fff;font-family:var(--sans);font-size:14px;
}
.hero-search select option{color:#152A4E;}
.hero-search select::placeholder,.hero-search input::placeholder{color:rgba(255,255,255,.55);}
.hero-search .btn{align-self:end;}

/* Sections */
.section{padding:104px 0;}
.section-tight{padding:72px 0;}
@media (max-width:768px){.section{padding:64px 0;}.section-tight{padding:48px 0;}}
.section-head{max-width:640px;margin-bottom:56px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-foot{margin-top:48px;}
.bg-soft{background:var(--cream-soft);}
.bg-charcoal{background:var(--charcoal);color:var(--cream);}
.bg-charcoal h2,.bg-charcoal h3,.bg-charcoal h4{color:var(--cream);}
.bg-charcoal .charcoal-soft-text{color:rgba(246,241,233,.68);}

/* Brand statement */
.statement{max-width:760px;margin:0 auto;text-align:center;}
.statement h2{font-weight:400;font-style:italic;font-size:38px;line-height:1.35;}
.statement p{color:var(--charcoal-soft);font-size:17px;max-width:600px;margin:22px auto 0;}

/* Testimonials */
.testi-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;}
@media (max-width:900px){.testi-strip{grid-template-columns:1fr;gap:40px;}}
.testi{border-left:2px solid var(--terracotta);padding-left:24px;}
.testi blockquote{margin:0 0 16px;font-family:var(--serif);font-size:21px;line-height:1.5;font-weight:400;}
.testi cite{font-style:normal;font-size:13px;color:var(--charcoal-soft);display:block;}
.testi cite b{color:var(--charcoal);font-weight:600;}

/* Tabs */
.tabs-nav{display:flex;gap:8px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin-bottom:40px;}
.tab-btn{
  background:none;border:none;cursor:pointer;font-family:var(--sans);
  font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  padding:14px 6px;margin-right:28px;color:var(--charcoal-soft);
  border-bottom:2px solid transparent;transform:translateY(1px);
}
.tab-btn.active{color:var(--charcoal);border-color:var(--terracotta-dark);}
.tab-panel{display:none;}
.tab-panel.active{display:block;}

.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;}
@media (max-width:980px){.grid-4{grid-template-columns:repeat(2,1fr);}.grid-3{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.grid-4{grid-template-columns:1fr;}.grid-3{grid-template-columns:1fr;}.grid-2{grid-template-columns:1fr;}}

/* Cards */
.card{display:block;}
.card .illus{aspect-ratio:4/5;margin-bottom:16px;}
.card.wide .illus{aspect-ratio:16/10;}
.card-title{font-family:var(--serif);font-size:19px;margin-bottom:6px;}
.card-desc{font-size:14px;color:var(--charcoal-soft);margin-bottom:10px;}
.card-meta{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;}
.price{font-weight:600;letter-spacing:.02em;}
.price .from{font-size:11px;color:var(--charcoal-soft);text-transform:uppercase;letter-spacing:.06em;font-weight:600;display:block;margin-bottom:2px;}
.price-old{font-size:12.5px;color:var(--charcoal-soft);text-decoration:line-through;}
.tag{display:inline-block;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;background:var(--cream-soft);border:1px solid var(--line);padding:4px 9px;border-radius:20px;color:var(--charcoal-soft);}

/* Services strip */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.svc-item{background:var(--cream-soft);padding:44px 32px;text-align:left;}
.svc-item svg{width:30px;height:30px;stroke:var(--terracotta);margin-bottom:20px;}
@media (max-width:900px){.svc-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.svc-grid{grid-template-columns:1fr;}}

/* Why us icon row */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;}
@media (max-width:900px){.why-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.why-grid{grid-template-columns:1fr;}}
.why-item svg{width:28px;height:28px;stroke:var(--terracotta-dark);margin-bottom:18px;}
.why-item h4{margin-bottom:8px;}
.why-item p{font-size:14px;color:var(--charcoal-soft);}

/* Newsletter */
.newsletter{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.nl-form{display:flex;gap:0;max-width:420px;width:100%;}
.nl-form input{flex:1;padding:14px 16px;border:1px solid var(--line);border-right:none;background:var(--cream-soft);font-family:var(--sans);font-size:14px;}
.nl-form button{border:1px solid var(--charcoal);background:var(--charcoal);color:var(--cream);padding:0 20px;font-size:12px;letter-spacing:.08em;text-transform:uppercase;font-weight:600;cursor:pointer;}

/* Footer */
.site-footer{background:var(--charcoal);color:rgba(246,241,233,.75);padding:80px 0 28px;}
.footer-top{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px;margin-bottom:64px;}
@media (max-width:900px){.footer-top{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.footer-top{grid-template-columns:1fr;}}
.footer-top h5{color:var(--cream);font-family:var(--sans);font-size:12px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:20px;font-weight:600;}
.footer-top li{margin-bottom:12px;font-size:14px;}
.footer-top a:hover{color:var(--cream);}
.footer-brand .logo{color:var(--cream);margin-bottom:16px;}
.footer-brand p{font-size:14px;max-width:280px;}
.footer-contact{display:flex;gap:14px;margin-top:20px;}
.footer-contact a{width:38px;height:38px;border:1px solid rgba(246,241,233,.25);border-radius:50%;display:flex;align-items:center;justify-content:center;}
.footer-contact svg{width:16px;height:16px;stroke:var(--cream);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:28px;border-top:1px solid rgba(246,241,233,.15);font-size:12.5px;flex-wrap:wrap;gap:12px;}

/* Sticky quick-contact */
.quick-contact{position:fixed;right:20px;bottom:20px;z-index:90;display:flex;flex-direction:column;gap:10px;}
.quick-contact a{
  width:50px;height:50px;border-radius:50%;background:var(--charcoal);color:var(--terracotta);
  display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(21,42,78,.35);
}
.quick-contact a svg{width:22px;height:22px;stroke:var(--terracotta);fill:none;}
.quick-contact a.zalo{background:#0068FF;box-shadow:0 8px 20px rgba(0,104,255,.35);font-family:var(--sans);font-weight:700;font-size:13px;}

/* Breadcrumb */
.crumb{font-size:12.5px;color:var(--charcoal-soft);margin-bottom:18px;}
.crumb a:hover{color:var(--gold-ink);}

/* Destination hub / listing */
.hub-intro{max-width:680px;}
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin:40px 0 36px;}
.chip{border:1px solid var(--line);padding:9px 18px;border-radius:20px;font-size:12.5px;font-weight:600;letter-spacing:.04em;background:var(--cream-soft);cursor:pointer;color:var(--charcoal);}
.chip.active{background:var(--charcoal);color:var(--cream);border-color:var(--charcoal);}

/* Tour detail */
.tour-head{display:grid;grid-template-columns:1.6fr 1fr;gap:56px;align-items:start;}
@media (max-width:900px){.tour-head{grid-template-columns:1fr;}}
.tour-gallery{display:grid;grid-template-columns:2fr 1fr;grid-template-rows:1fr 1fr;gap:10px;height:520px;}
.tour-gallery .illus:first-child{grid-row:1/3;}
.tour-gallery .illus{cursor:pointer;}
.tour-gallery .illus.is-active{outline:2px solid var(--terracotta);outline-offset:-2px;}
@media (max-width:700px){.tour-gallery{grid-template-columns:1fr;grid-template-rows:auto;height:auto;}.tour-gallery .illus{aspect-ratio:16/10;}}
.booking-card{border:1px solid var(--line);background:var(--cream-soft);padding:32px;position:sticky;top:110px;}
.booking-card .price-lg{font-family:var(--serif);font-size:32px;margin:6px 0 4px;}
.booking-row{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;}
.booking-row:last-of-type{border-bottom:none;}
.itin-day{display:grid;grid-template-columns:110px 1fr;gap:24px;padding:28px 0;border-top:1px solid var(--line);}
.itin-day:first-child{border-top:none;}
.itin-day .day-num{font-family:var(--serif);font-size:15px;color:var(--gold-ink);}
.incl-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
@media (max-width:640px){.incl-grid{grid-template-columns:1fr;}}
.incl-grid h4{margin-bottom:14px;}
.incl-grid li{font-size:14px;margin-bottom:10px;padding-left:22px;position:relative;color:var(--charcoal-soft);}
.incl-grid li:before{content:'';position:absolute;left:0;top:7px;width:10px;height:1px;background:var(--terracotta);}

/* Services page */
.svc-detail{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:100px;}
.svc-detail:last-child{margin-bottom:0;}
.svc-detail:nth-child(even){direction:rtl;}
.svc-detail:nth-child(even) > *{direction:ltr;}
@media (max-width:860px){.svc-detail, .svc-detail:nth-child(even){grid-template-columns:1fr;direction:ltr;}}
table.rates{width:100%;border-collapse:collapse;margin-top:24px;font-size:14px;}
table.rates th{text-align:left;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--charcoal-soft);padding:10px 12px;border-bottom:1px solid var(--charcoal);}
table.rates td{padding:14px 12px;border-bottom:1px solid var(--line);}
table.rates tr:last-child td{border-bottom:none;}

/* About */
.about-hero-stat{display:flex;gap:56px;flex-wrap:wrap;}
.stat b{font-family:var(--serif);font-size:44px;display:block;color:var(--terracotta-dark);}
.stat span{font-size:13px;color:var(--charcoal-soft);}
.founder{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:center;background:var(--cream-soft);border:1px solid var(--line);padding:44px;}
@media (max-width:640px){.founder{grid-template-columns:1fr;}}
.monogram{width:150px;height:150px;border-radius:50%;background:var(--terracotta);color:var(--charcoal);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:44px;margin:0 auto;font-weight:600;}
.founder blockquote{font-family:var(--serif);font-size:20px;font-style:italic;line-height:1.5;margin:0 0 14px;}

/* Contact / enquiry / booking forms */
.enquiry-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;}
@media (max-width:900px){.enquiry-grid{grid-template-columns:1fr;}}
.field{margin-bottom:22px;}
.field label{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;font-weight:600;color:var(--charcoal-soft);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;padding:13px 14px;border:1px solid var(--line);background:var(--cream-soft);
  font-family:var(--sans);font-size:14.5px;color:var(--charcoal);
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--terracotta);background:#fff;}
.field textarea{resize:vertical;min-height:110px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
@media (max-width:480px){.field-row{grid-template-columns:1fr;}}
.field-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;}
@media (max-width:640px){.field-row-3{grid-template-columns:1fr;}}
.contact-info-item{display:flex;gap:16px;padding:22px 0;border-top:1px solid var(--line);}
.contact-info-item:first-child{border-top:none;}
.contact-info-item svg{width:20px;height:20px;stroke:var(--terracotta-dark);flex-shrink:0;margin-top:2px;}

/* Notice / flash / form-error banners */
.notice{background:var(--terracotta-tint);border:1px solid var(--terracotta);padding:16px 20px;font-size:13.5px;margin-bottom:32px;border-radius:2px;}
.notice b, .notice strong{color:var(--terracotta-dark);}
.notice.notice-error{background:var(--danger-tint);border-color:var(--danger);color:#5c1f1b;}
.notice.notice-error b, .notice.notice-error strong{color:var(--danger);}
.notice ul{margin:6px 0 0;padding-left:18px;list-style:disc;}
.notice ul li{margin-bottom:4px;}

/* Pagination */
.pager{display:flex;gap:8px;justify-content:center;margin-top:48px;flex-wrap:wrap;}
.pager a,.pager span{min-width:40px;height:40px;padding:0 8px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);font-size:13px;font-weight:600;background:var(--cream);}
.pager a:hover{border-color:var(--charcoal);}
.pager .current{background:var(--charcoal);color:#fff;border-color:var(--charcoal);}

/* Empty state */
.empty-state{text-align:center;padding:64px 20px;color:var(--charcoal-soft);border:1px dashed var(--line);}

/* Booking summary box (tour_detail / booking page) */
.booking-summary{border:1px solid var(--line);background:var(--cream-soft);padding:28px;}
.booking-summary .illus{aspect-ratio:16/10;margin-bottom:18px;}
.booking-summary hr{border:none;border-top:1px solid var(--line);margin:18px 0;}
.qty-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-top:1px solid var(--line);}
.qty-row:first-of-type{border-top:none;}
.qty-row input[type=number]{width:80px;padding:8px 10px;border:1px solid var(--line);background:#fff;font-family:var(--sans);font-size:14px;}
.total-row{display:flex;justify-content:space-between;align-items:baseline;font-size:20px;padding-top:14px;}
.total-row strong{font-family:var(--serif);color:var(--terracotta-dark);}