/* ===== Hạ Yên Spa — base ===== */
:root{
  --beige:#f0e8de;
  --cream:#f0f1ed;
  --ink:#1c1814;
  --ink-soft:#42413f;
  --brown:#3a2e22;
  --gold:#b08d57;
  --white:#ffffff;
  --radius:25px;
  --maxw:1100px;
  --font-head:"Roboto Slab",Georgia,serif;
  --font-body:"Open Sans","Segoe UI",sans-serif;
  --shadow:0 10px 30px rgba(28,24,20,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  line-height:1.65;
  font-size:16px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-head);line-height:1.2;font-weight:700}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:1000}
.skip-link:focus{left:8px;top:8px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius);font-weight:700;font-size:.95rem;
  cursor:pointer;border:2px solid transparent;transition:transform .15s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(2px)}
.btn-cream{background:var(--cream);color:var(--ink);box-shadow:var(--shadow)}
.btn-cream:hover{background:#fff;transform:translateY(-2px)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--brown)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline:hover{background:#fff;color:var(--ink)}
.btn-phone{background:transparent;border-color:var(--brown);color:var(--brown);padding:9px 18px;border-radius:var(--radius)}
.btn-phone:hover{background:var(--brown);color:#fff}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid rgba(58,46,34,.1);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:96px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{width:84px;height:84px;object-fit:contain}
.brand-name{font-family:var(--font-head);font-weight:700;font-size:1.5rem;color:var(--brown);letter-spacing:.5px;white-space:nowrap}
.nowrap{white-space:nowrap}
.nav-links{display:flex;gap:26px;margin-left:auto}
.nav-links a{font-weight:600;font-size:.95rem;color:var(--ink-soft);position:relative;padding:4px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--gold);transition:width .25s}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.btn-phone{margin-left:8px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:3px;background:var(--brown);border-radius:2px;transition:.3s}
.mobile-menu{display:none;flex-direction:column;gap:4px;padding:12px 20px 20px;background:#fff;border-bottom:1px solid rgba(58,46,34,.1)}
.mobile-menu a{padding:12px 4px;font-weight:600;border-bottom:1px solid rgba(58,46,34,.07)}
.mobile-menu .btn{margin-top:10px;border-bottom:0}

/* ===== Hero ===== */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;
  background:url("../img/hero.jpg") center/cover no-repeat;color:#fff;text-align:center}
.hero-overlay{position:absolute;inset:0;background:radial-gradient(circle at 50% 38%,rgba(20,16,12,.45),rgba(20,16,12,.68))}
.hero-inner{position:relative;z-index:2;padding:90px 20px;max-width:860px}
.hero-logo{width:70%;max-width:460px;height:auto;object-fit:contain;margin:0 auto 18px;filter:drop-shadow(0 6px 20px rgba(0,0,0,.55))}
.hero h1{font-size:clamp(1rem,5.2vw,3rem);text-transform:uppercase;letter-spacing:.3px;margin-bottom:22px;text-shadow:0 2px 14px rgba(0,0,0,.4)}
.hero h1 span{display:block;white-space:nowrap;line-height:1.25}
.hero-sub{font-size:clamp(1rem,2.2vw,1.2rem);max-width:620px;margin:0 auto 18px;font-weight:600;text-shadow:0 1px 8px rgba(0,0,0,.5)}
.hero-contact{font-size:.95rem;margin-bottom:28px;opacity:.95}
.hero-contact a{font-weight:700;border-bottom:1px solid rgba(255,255,255,.5)}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== Section heads ===== */
.section-head{text-align:center;margin-bottom:46px}
.eyebrow{display:inline-block;font-family:var(--font-body);font-weight:700;letter-spacing:3px;
  text-transform:uppercase;font-size:.72rem;color:var(--gold);margin-bottom:8px}
.section-head h2{font-size:clamp(1.7rem,4vw,2.4rem)}
.divider{display:block;width:90px;height:3px;background:var(--brown);margin:18px auto 0;border-radius:3px}

/* ===== Services ===== */
.services{position:relative;padding:84px 0;background:var(--beige)}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.service-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease}
.service-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(28,24,20,.18)}
.service-media{aspect-ratio:13/10;overflow:hidden}
.service-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.service-card:hover .service-media img{transform:scale(1.06)}
.service-card h3{font-size:1.25rem;text-transform:uppercase;letter-spacing:.5px;padding:22px 22px 0;color:var(--brown)}
.service-card p{padding:12px 22px 26px;color:var(--ink-soft);font-size:.95rem}

/* ===== Experience ===== */
.experience{padding:84px 0;background:#fff}
.experience-inner{max-width:820px;margin:0 auto;text-align:center}
.experience h2{font-size:clamp(1.7rem,4vw,2.3rem);margin-bottom:18px;color:var(--brown)}
.experience>.experience-inner>p{color:var(--ink-soft);font-size:1.05rem;margin-bottom:40px}
.experience-points{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center}
.experience-points li{padding:26px 18px;background:var(--beige);border-radius:14px}
.experience-points strong{display:block;font-family:var(--font-head);font-size:1.1rem;margin-bottom:8px;color:var(--ink)}
.experience-points span{font-size:.92rem;color:var(--ink-soft)}

/* ===== Catalog ===== */
.catalog{padding:84px 0;background:#fff}
.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.catalog-col{background:var(--beige);border-radius:14px;padding:30px 26px}
.catalog-col h3{font-size:1.15rem;color:var(--brown);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid rgba(58,46,34,.18)}
.catalog-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.catalog-col li{position:relative;padding-left:22px;color:var(--ink-soft);font-size:.95rem}
.catalog-col li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--gold)}

/* ===== FAQ ===== */
.faq{padding:84px 0;background:var(--beige)}
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq details{background:#fff;border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.faq summary{cursor:pointer;list-style:none;padding:18px 22px;font-family:var(--font-head);font-weight:500;
  font-size:1.05rem;color:var(--brown);display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--gold);transition:transform .2s}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 22px 20px;color:var(--ink-soft);font-size:.95rem}

.area-served{color:#d7ccbd;font-size:.9rem;margin-bottom:12px}

/* ===== Booking ===== */
.booking{position:relative;padding:96px 0;background:url("../img/bg-booking.jpg") center/cover no-repeat;color:#fff;text-align:center}
.booking-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,16,12,.6),rgba(20,16,12,.55))}
.booking-inner{position:relative;z-index:2;max-width:760px;margin:0 auto}
.booking h2{font-size:clamp(1.8rem,4.4vw,2.7rem);margin-bottom:18px;text-shadow:0 2px 14px rgba(0,0,0,.4)}
.booking p{font-size:1.05rem;margin-bottom:32px;opacity:.96;text-shadow:0 1px 8px rgba(0,0,0,.4)}
.booking-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{background:var(--brown);color:#efe7dc}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:64px 20px 44px}
.footer-brand img{width:84px;height:84px;object-fit:contain;margin-bottom:14px}
.footer-brand p{color:#d7ccbd;font-size:.95rem;max-width:300px}
.footer-col h2{font-family:var(--font-head);font-size:1.15rem;margin-bottom:16px;color:#fff}
.footer-col address{font-style:normal;color:#d7ccbd;line-height:1.8;margin-bottom:12px}
.map-link{color:var(--gold);font-weight:600;font-size:.92rem}
.map-link:hover{text-decoration:underline}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:10px;color:#d7ccbd;font-size:.95rem}
.contact-list a{border-bottom:1px solid rgba(255,255,255,.25)}
.contact-list a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12)}
.footer-bottom .container{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;font-size:.85rem;color:#c3b6a4;flex-wrap:wrap;gap:8px}
.footer-bottom a{color:#c3b6a4}
.footer-bottom a:hover{color:#fff}

/* ===== Floating Zalo ===== */
.float-zalo{position:fixed;right:18px;bottom:18px;z-index:200;background:var(--brown);color:#fff;
  padding:13px 20px;border-radius:30px;font-weight:700;font-size:.9rem;box-shadow:0 8px 24px rgba(0,0,0,.3);
  transition:transform .2s,background .2s}
.float-zalo:hover{transform:translateY(-3px);background:var(--ink)}

/* ===== Responsive ===== */
@media (max-width:860px){
  .nav-links,.btn-phone{display:none}
  .nav-toggle{display:flex}
  .site-header.open .mobile-menu{display:flex}
  .service-grid{grid-template-columns:1fr;max-width:440px;margin:0 auto}
  .catalog-grid{grid-template-columns:1fr;max-width:440px;margin:0 auto}
  .experience-points{grid-template-columns:1fr;max-width:440px;margin:0 auto}
  .hero-logo{width:70%;max-width:330px;height:auto}
  .footer-inner{grid-template-columns:1fr;gap:34px;text-align:left}
  .hero{min-height:80vh}
  .nav{min-height:64px}
  .brand img{width:32px;height:32px}
  .brand-name{font-size:1.2rem}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}