/* ===== Antra Interior — Template MONA — Thiết kế nội thất ===== */
:root{
  --cream:#f7f3ee; --cream-2:#efe8df; --ink:#1c1a16; --ink-2:#2a2722;
  --muted:#6f675c; --line:#e3dace; --gold:#b8895a; --gold-2:#caa06b;
  --white:#ffffff; --shadow:0 18px 50px -22px rgba(40,30,18,.28);
  --r:16px; --maxw:1200px; --topbar-h:46px;
  --serif:"Playfair Display",Georgia,serif;
  --sans:"Be Vietnam Pro",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--cream);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.15;font-weight:600;letter-spacing:.2px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold)}
.h-xl{font-size:clamp(2.2rem,5vw,3.6rem)}
.h-lg{font-size:clamp(1.9rem,3.6vw,2.7rem)}
.h-md{font-size:clamp(1.3rem,2.4vw,1.7rem)}
.lead{color:var(--muted);font-size:1.05rem;max-width:60ch}
.accent{color:var(--gold);font-style:italic}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:50px;font-weight:600;font-size:.95rem;cursor:pointer;border:1px solid transparent;transition:.25s;white-space:nowrap}
.btn--gold{background:var(--gold);color:#fff}
.btn--gold:hover{background:var(--ink);transform:translateY(-2px)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:var(--gold)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{background:var(--gold);color:#fff}

/* ===== Top bar (luật 4) ===== */
.topbar{position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:1000;background:linear-gradient(90deg,#1c1a16,#3a3026);color:#fff;display:flex;align-items:center;justify-content:center;gap:18px;padding:0 16px;font-size:.86rem}
.topbar strong{font-weight:600;letter-spacing:.02em}
.topbar .topbar__cta{display:inline-flex;align-items:center;gap:7px;background:var(--gold);color:#fff;padding:7px 16px;border-radius:50px;font-weight:600;font-size:.82rem;transition:.2s}
.topbar .topbar__cta:hover{background:#fff;color:var(--ink)}
@media(max-width:640px){.topbar{font-size:.74rem;gap:10px;text-align:center}.topbar .hide-sm{display:none}}

/* ===== Header ===== */
.header{position:sticky;top:var(--topbar-h);z-index:900;background:rgba(247,243,238,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{font-family:var(--serif);font-size:1.5rem;font-weight:700;letter-spacing:.5px}
.logo span{color:var(--gold)}
.nav__menu{display:flex;gap:30px;list-style:none}
.nav__menu a{font-size:.93rem;font-weight:500;color:var(--ink-2);position:relative;padding:4px 0}
.nav__menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--gold);transition:.25s}
.nav__menu a:hover::after,.nav__menu a.active::after{width:100%}
.nav__right{display:flex;align-items:center;gap:16px}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav__toggle span{width:24px;height:2px;background:var(--ink);transition:.3s}
@media(max-width:980px){
  .nav__menu{position:fixed;inset:calc(var(--topbar-h) + 74px) 0 auto 0;flex-direction:column;background:var(--cream);padding:24px;gap:18px;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:.35s;box-shadow:var(--shadow)}
  .nav__menu.open{transform:translateY(0)}
  .nav__toggle{display:flex}
  .nav__right .btn{display:none}
}

/* ===== Hero ===== */
.hero{position:relative;min-height:86vh;display:flex;align-items:flex-end;color:#fff;overflow:hidden}
.hero__bg{position:absolute;inset:0}
.hero__bg img{width:100%;height:100%;object-fit:cover}
.hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,14,.25),rgba(20,18,14,.78))}
.hero__inner{position:relative;z-index:2;padding-bottom:72px;width:100%}
.hero h1{font-size:clamp(2.6rem,6.5vw,5rem);max-width:14ch;margin-bottom:22px}
.hero .lead{color:rgba(255,255,255,.85);font-size:1.12rem;max-width:54ch;margin-bottom:32px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}
.hero__scroll{margin-top:40px;display:flex;gap:46px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.2);padding-top:26px}
.hero__scroll div b{font-family:var(--serif);font-size:1.9rem;display:block;color:var(--gold-2)}
.hero__scroll div span{font-size:.85rem;color:rgba(255,255,255,.7)}

/* ===== Feature row (3 dịch vụ) ===== */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px 30px;transition:.3s}
.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.feature__ico{width:54px;height:54px;border-radius:14px;background:var(--cream-2);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:20px}
.feature h3{font-size:1.25rem;margin-bottom:10px}
.feature p{color:var(--muted);font-size:.95rem;margin-bottom:16px}
.feature a{color:var(--gold);font-weight:600;font-size:.9rem}

/* ===== Split (image + text) ===== */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center}
.split--rev .split__media{order:2}
.split__media img{border-radius:var(--r);box-shadow:var(--shadow);width:100%;object-fit:cover}
.split__body h2{margin-bottom:18px}
.tick{list-style:none;margin:22px 0}
.tick li{position:relative;padding-left:32px;margin-bottom:12px;color:var(--ink-2)}
.tick li::before{content:"✦";position:absolute;left:0;color:var(--gold)}

/* dark section */
.dark{background:var(--ink);color:#fff}
.dark .lead{color:rgba(255,255,255,.72)}
.dark .eyebrow{color:var(--gold-2)}

/* ===== Services list (explore) ===== */
.svc-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:30px}
.svc-item{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.svc-item b{font-family:var(--serif);color:var(--gold);font-size:1.3rem}
.svc-item h4{font-size:1.05rem;margin-bottom:4px}
.svc-item p{font-size:.88rem;color:var(--muted)}

/* ===== Stats ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat b{font-family:var(--serif);font-size:clamp(2.2rem,4vw,3.2rem);color:var(--gold);display:block;line-height:1}
.stat span{color:var(--muted);font-size:.92rem;margin-top:8px;display:block}

/* ===== Process ===== */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;position:relative}
.step b{font-family:var(--serif);font-size:2.4rem;color:var(--cream-2);position:absolute;top:14px;right:20px}
.step h4{font-size:1.1rem;margin:8px 0 8px;position:relative}
.step p{font-size:.9rem;color:var(--muted)}

/* ===== Portfolio grid ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:#fff;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);transition:.3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card__media{aspect-ratio:4/3;overflow:hidden}
.card__media img{width:100%;height:100%;object-fit:cover;transition:.5s}
.card:hover .card__media img{transform:scale(1.06)}
.card__body{padding:22px 24px}
.card__tag{font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);font-weight:600}
.card__body h3{font-size:1.2rem;margin:8px 0 8px}
.card__body p{color:var(--muted);font-size:.92rem}
.card__meta{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:.85rem;color:var(--muted)}

/* ===== Testimonials ===== */
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:32px 30px}
.quote .stars{color:var(--gold);letter-spacing:3px;margin-bottom:14px}
.quote p{font-size:1.02rem;color:var(--ink-2);margin-bottom:22px}
.quote__who{display:flex;align-items:center;gap:14px}
.quote__who img{width:52px;height:52px;border-radius:50%;object-fit:cover}
.quote__who b{display:block;font-family:var(--serif)}
.quote__who span{font-size:.85rem;color:var(--muted)}
.rating-big{display:flex;align-items:center;gap:14px;margin-top:20px}
.rating-big b{font-family:var(--serif);font-size:3rem;color:var(--gold)}

/* ===== Team ===== */
.team-card{text-align:center}
.team-card .card__media{aspect-ratio:3/4;border-radius:var(--r);overflow:hidden}
.team-card h3{font-size:1.15rem;margin-top:16px}
.team-card span{color:var(--gold);font-size:.88rem}

/* ===== CTA band ===== */
.cta-band{position:relative;border-radius:24px;overflow:hidden;color:#fff;padding:72px 40px;text-align:center}
.cta-band__bg{position:absolute;inset:0}
.cta-band__bg img{width:100%;height:100%;object-fit:cover}
.cta-band__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,14,.55),rgba(20,18,14,.8))}
.cta-band__in{position:relative;z-index:2}
.cta-band h2{font-size:clamp(2rem,4vw,3rem);margin-bottom:16px}
.cta-band .lead{color:rgba(255,255,255,.85);margin:0 auto 28px}

/* ===== Newsletter ===== */
.news{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.news form{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.news input{flex:1;min-width:200px;padding:15px 20px;border-radius:50px;border:1px solid var(--line);font-family:inherit;font-size:.95rem;background:#fff}
.news input:focus{outline:none;border-color:var(--gold)}

/* ===== Exclusive sale banner (luật 3) ===== */
.excl{background:linear-gradient(120deg,#2a2722,#1c1a16);color:#fff;border-radius:24px;padding:52px 44px;display:grid;grid-template-columns:1.2fr auto;gap:30px;align-items:center}
.excl h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:12px}
.excl p{color:rgba(255,255,255,.78);max-width:52ch}
.excl .price{font-family:var(--serif);font-size:2.4rem;color:var(--gold-2);margin:10px 0}

/* ===== Footer ===== */
.footer{background:var(--ink);color:rgba(255,255,255,.7);padding:72px 0 30px}
.footer__top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer .logo{color:#fff}
.footer h4{color:#fff;font-family:var(--sans);font-size:.85rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px;font-weight:600}
.footer ul{list-style:none}
.footer ul li{margin-bottom:11px;font-size:.92rem}
.footer ul a:hover{color:var(--gold-2)}
.footer__bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:26px;font-size:.85rem}

/* page hero (sub-pages) */
.page-hero{background:var(--cream-2);padding:64px 0;border-bottom:1px solid var(--line)}
.page-hero .crumb{font-size:.85rem;color:var(--muted);margin-top:10px}
.page-hero .crumb a:hover{color:var(--gold)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:8px}
.field input,.field textarea{width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:12px;font-family:inherit;font-size:.95rem;background:#fff}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--gold)}
.info-line{display:flex;gap:14px;margin-bottom:22px;align-items:flex-start}
.info-line .i{width:44px;height:44px;border-radius:12px;background:var(--cream-2);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.info-line b{display:block;font-family:var(--serif)}
.info-line span{color:var(--muted);font-size:.92rem}

.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media(max-width:980px){
  .features,.grid-3,.process{grid-template-columns:repeat(2,1fr)}
  .split,.news,.contact-grid{grid-template-columns:1fr;gap:36px}
  .split--rev .split__media{order:0}
  .footer__top{grid-template-columns:1fr 1fr}
  .excl{grid-template-columns:1fr;text-align:left}
  .section{padding:72px 0}
}
@media(max-width:640px){
  .features,.grid-3,.grid-2,.process,.stats,.svc-list{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .footer__top{grid-template-columns:1fr}
  .hero__scroll{gap:28px}
  .section{padding:56px 0}
  .cta-band,.excl{padding:40px 24px}
}