/* ============================================================
   TẤN TÀI AM — shared stylesheet (7 trang)
   ============================================================ */
:root{
  --bg:#FBF8F3; --surface:#FFFFFF; --surface-alt:#F5EEE3; --line:#E8DFD0;
  --ink:#241A10; --ink-soft:#5E5140; --muted:#928574; --on-brand:#FBF3E4;
  --brand:#683B14; --brand-hover:#7E4A1C; --brand-deep:#3E2410; --brand-soft:#EFE3D0;
  --accent:#C99A2E; --accent-hover:#B4871F; --accent-soft:#F6EACB;
  --success:#05A461; --success-soft:#DDF3E8;
  --r-sm:6px; --r-md:10px; --r-lg:16px; --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(36,26,16,.06);
  --shadow-md:0 6px 16px rgba(36,26,16,.08);
  --shadow-lg:0 18px 40px rgba(36,26,16,.12);
  --shadow-gold:0 6px 14px rgba(201,154,46,.35);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0; background:var(--bg); color:var(--ink);
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px; line-height:1.625; -webkit-font-smoothing:antialiased; text-wrap:pretty;}
img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
button{font:inherit; cursor:pointer; border:0; background:none}
h1,h2,h3{margin:0; line-height:1.2; text-wrap:balance}
p{margin:0}
ul{margin:0; padding:0; list-style:none}

/* typography */
.h1{font-size:50px; font-weight:700; line-height:1.16}
.h2{font-size:34px; font-weight:700; line-height:1.24}
.h3{font-size:24px; font-weight:600; line-height:1.33}
.body-l{font-size:18px; line-height:1.67}
.small{font-size:14px; line-height:1.57}
.label{font-size:13px; font-weight:600; letter-spacing:.06em; text-transform:uppercase; line-height:1.23}
.stat{font-size:56px; font-weight:700; line-height:1.07}

/* layout */
.container{width:min(var(--container),100% - 48px); margin-inline:auto}
.section{padding:88px 0}
.section--alt{background:var(--surface-alt)}
.section--white{background:var(--surface)}

/* pill / button / link */
.pill{display:inline-flex; align-items:center; gap:8px; width:fit-content;
  padding:7px 14px; border-radius:var(--r-pill); background:var(--accent-soft); color:var(--accent-hover)}
.pill::before{content:""; width:7px; height:7px; border-radius:50%; background:currentColor; flex:none}
.pill--eco{background:var(--success-soft); color:var(--success)}
.pill--solid{background:var(--accent); color:var(--brand-deep)}

.btn{display:inline-flex; align-items:center; justify-content:center; gap:8px; width:fit-content;
  padding:16px 30px; border-radius:var(--r-md); font-size:16px; font-weight:600; line-height:1.25;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease}
.btn--primary{background:var(--brand); color:var(--on-brand)}
.btn--primary:hover{background:var(--brand-hover)}
.btn--accent{background:var(--accent); color:var(--brand-deep)}
.btn--accent:hover{background:var(--accent-hover); color:var(--on-brand)}
.btn--ghost-light{border:1.5px solid var(--on-brand); color:var(--on-brand)}
.btn--ghost-light:hover{background:var(--on-brand); color:var(--brand-deep)}
.btn--ghost-brand{border:1.5px solid var(--brand); color:var(--brand)}
.btn--ghost-brand:hover{background:var(--brand); color:var(--on-brand)}
.btn--block{width:100%}

.link-more{display:inline-flex; align-items:center; gap:8px; font-size:16px; font-weight:600; color:var(--brand)}
.link-more:hover{color:var(--accent-hover)}

.icon-badge{width:52px; height:52px; border-radius:50%; flex:none; display:grid; place-items:center;
  background:var(--accent); box-shadow:var(--shadow-gold)}
.icon-badge svg{width:24px; height:24px}

.section-head{display:flex; flex-direction:column; gap:14px}
.section-head--row{flex-direction:row; align-items:flex-end; justify-content:space-between; gap:24px; flex-wrap:wrap}
.section-head .lead{color:var(--ink-soft); max-width:680px}

/* ===================== NAV ===================== */
.nav{margin-top:24px; background:var(--surface); border:1px solid var(--line);
  border-radius:var(--r-lg); box-shadow:0 2px 4px rgba(36,26,15,.06);
  display:flex; align-items:center; justify-content:space-between; gap:24px; padding:0 40px; position:relative}
.nav__logo{display:flex; align-items:center}
.nav__logo img{height:88px; width:auto}
.nav__links{display:flex; align-items:flex-start; gap:32px}
.nav__link{display:flex; flex-direction:column; align-items:center; gap:6px; padding-top:4px;
  font-size:16px; font-weight:500; color:var(--ink-soft)}
.nav__link::after{content:""; width:22px; height:3px; border-radius:2px; background:transparent}
.nav__link:hover{color:var(--brand)}
.nav__link.is-active{color:var(--brand); font-weight:700}
.nav__link.is-active::after{background:var(--accent)}
.nav__right{display:flex; align-items:center; gap:20px}
.lang{display:flex; align-items:center; gap:6px; font-size:13px; font-weight:600; letter-spacing:.06em}
.lang button{color:var(--muted); letter-spacing:inherit; font-weight:inherit}
.lang button.is-active{color:var(--brand)}
.lang span{color:var(--line)}
.nav__cta{padding:12px 22px; border-radius:var(--r-md); background:var(--brand); color:var(--on-brand); font-weight:600}
.nav__cta:hover{background:var(--brand-hover)}
.nav__burger{display:none}

/* ===================== HERO (home) ===================== */
.hero{position:relative; isolation:isolate; overflow:hidden; padding-bottom:96px}
.hero__bg{position:absolute; inset:0; z-index:-2; width:100%; height:100%; object-fit:cover}
.hero::after{content:""; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(180deg,rgba(62,36,16,.86) 0%,rgba(62,36,16,.55) 55%,rgba(62,36,16,.35) 100%)}
.hero__content{max-width:760px; padding-top:152px; color:var(--on-brand)}
.hero__title{margin:24px 0 0; color:var(--on-brand)}
.hero__sub{margin-top:20px; max-width:620px; color:#EADFC9}
.hero__actions{margin-top:32px; display:flex; gap:16px; flex-wrap:wrap}

/* ===================== PAGE BANNER (trang con) ===================== */
.page-banner{position:relative; isolation:isolate; overflow:hidden}
.page-banner__bg{position:absolute; inset:0; z-index:-2; width:100%; height:100%; object-fit:cover}
.page-banner::after{content:""; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(180deg,rgba(62,36,16,.9) 0%,rgba(62,36,16,.66) 100%)}
.page-banner--solid{background:var(--brand-deep)}
.page-banner--solid::after{display:none}
.page-banner__content{padding:200px 0 56px; color:var(--on-brand); display:flex; flex-direction:column; gap:12px}
.page-banner--slim .page-banner__content{padding:150px 0 40px}
.page-banner__content h1{color:var(--on-brand)}
.page-banner__content .lead{color:#EADFC9; max-width:640px}
.breadcrumb{display:flex; align-items:center; gap:8px; font-size:14px; color:#D8CBB8; flex-wrap:wrap}
.breadcrumb .sep{color:#9E8E78}
.breadcrumb .cur{color:var(--accent); font-weight:600}
.breadcrumb a:hover{color:var(--on-brand)}

/* ===================== ABOUT (home + trang GT) ===================== */
.about__grid{display:grid; grid-template-columns:minmax(0,1fr) minmax(0,587px); gap:64px; align-items:center}
.about__body{display:flex; flex-direction:column; gap:20px; margin-top:8px}
.about__body p{color:var(--ink-soft)}
.checklist{display:flex; flex-direction:column; gap:14px; margin-top:4px}
.checklist li{display:flex; align-items:center; gap:12px}
.checklist svg{width:20px; height:20px; flex:none}
.about__img{border-radius:var(--r-lg); aspect-ratio:587/502; object-fit:cover; width:100%}

/* story (trang GT: text phải / ảnh trái) */
.story__grid{display:grid; grid-template-columns:minmax(0,520px) minmax(0,1fr); gap:64px; align-items:center}
.story__img{border-radius:var(--r-lg); aspect-ratio:520/600; object-fit:cover; width:100%}
.story__text{display:flex; flex-direction:column; gap:20px}
.story__text p{color:var(--ink-soft)}

/* ===================== PRODUCT CARDS ===================== */
.grid-products{display:flex; flex-wrap:wrap; justify-content:center; gap:24px; margin-top:40px}
.grid-products > .card{width:calc((100% - 72px) / 4)}
.card{display:flex; flex-direction:column; background:var(--surface); border:1px solid var(--line);
  border-radius:var(--r-lg); overflow:hidden; box-shadow:var(--shadow-md);
  transition:transform .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-4px); box-shadow:var(--shadow-lg)}
.card__img{width:100%; aspect-ratio:1/1; object-fit:contain; background:var(--surface-alt)}
.card__body{padding:24px; display:flex; flex-direction:column; gap:10px; flex:1}
.card__title{font-size:20px; font-weight:600; line-height:1.3; margin-top:2px}
.card__foot{margin-top:auto; padding-top:16px; border-top:1px solid var(--line);
  display:flex; align-items:center; justify-content:space-between; gap:8px; flex-wrap:wrap; row-gap:8px}
.card__price{font-size:13px; font-weight:600; letter-spacing:.06em; text-transform:uppercase; color:var(--brand); white-space:nowrap}
.card__link{font-size:13px; font-weight:600; letter-spacing:.06em; text-transform:uppercase; color:var(--accent-hover); white-space:nowrap}
.card__link:hover{color:var(--brand)}

/* filter chips + pagination */
.chips{display:flex; flex-wrap:wrap; gap:12px}
.chip{padding:11px 22px; border-radius:var(--r-pill); background:var(--surface); border:1px solid var(--line);
  font-size:16px; font-weight:600; color:var(--ink-soft); transition:.15s}
.chip:hover{border-color:var(--brand); color:var(--brand)}
.chip.is-active{background:var(--brand); border-color:var(--brand); color:var(--on-brand)}
.pagination{display:flex; gap:10px; margin-top:40px}
.pagination a{width:44px; height:44px; border-radius:var(--r-md); display:grid; place-items:center;
  background:var(--surface); border:1px solid var(--line); font-weight:600; color:var(--ink-soft)}
.pagination a:hover{border-color:var(--brand); color:var(--brand)}
.pagination a.is-active{background:var(--brand); border-color:var(--brand); color:var(--on-brand)}

/* note band (trang SP) */
.note-band{display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap;
  background:var(--accent-soft); border-radius:var(--r-lg); padding:32px; margin-top:24px}
.note-band__text h3{margin-bottom:4px}
.note-band__text p{color:var(--ink-soft)}

/* ===================== COMMIT / FEATURE ===================== */
.grid-commit{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:24px; margin-top:40px}
.grid-3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; margin-top:40px}
.commit{background:var(--bg); border:1px solid var(--line); border-radius:var(--r-lg); padding:28px;
  display:flex; flex-direction:column; gap:16px}
.commit--onwhite{background:var(--surface)}
.commit p{color:var(--ink-soft)}

/* ===================== STATS ===================== */
.stats{background:var(--brand-deep); padding:64px 0}
.stats__row{display:flex; align-items:center; justify-content:space-between; gap:24px}
.stats__item{display:flex; flex-direction:column; gap:6px}
.stats__item b{color:var(--accent)}
.stats__item span{color:var(--on-brand)}
.stats__div{width:1px; height:64px; background:rgba(255,255,255,.14); flex:none}

/* ===================== NEWS ===================== */
.grid-news{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; margin-top:40px}
.news__img{width:100%; aspect-ratio:397/220; object-fit:cover}
.news__meta{display:flex; align-items:center; gap:12px; flex-wrap:wrap}
.news__date{color:var(--muted)}
.news__excerpt{color:var(--ink-soft); flex:1}

/* ===================== GALLERY ===================== */
.gallery{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; margin-top:40px}
.gallery figure{margin:0; display:flex; flex-direction:column; gap:12px}
.gallery img{width:100%; aspect-ratio:397/280; object-fit:cover; border-radius:var(--r-lg)}
.gallery figcaption{color:var(--ink-soft); font-size:14px}

/* ===================== PRODUCT DETAIL ===================== */
.pd-grid{display:grid; grid-template-columns:minmax(0,588px) minmax(0,1fr); gap:64px; align-items:start}
.pd-gallery{display:flex; flex-direction:column; gap:16px}
/* khung ôm khít ảnh mockup (tỉ lệ chuẩn 1:1) */
.pd-main{width:100%; aspect-ratio:1/1; object-fit:cover; background:var(--surface-alt);
  border:1px solid var(--line); border-radius:var(--r-lg)}
.pd-thumbs{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
/* khớp Figma: thumbnail VUÔNG (185×184) */
.pd-thumbs img{width:100%; aspect-ratio:1/1; object-fit:cover; background:var(--surface-alt);
  border:1px solid var(--line); border-radius:var(--r-md); cursor:pointer}
/* ảnh mockup (có chữ in sẵn) -> contain để thấy trọn; ảnh chụp thật -> cover */
.pd-thumbs img.is-mockup{object-fit:contain}
.pd-thumbs img.is-active{border:2px solid var(--accent)}
.pd-info{display:flex; flex-direction:column; gap:18px}
.pd-info .desc{color:var(--ink-soft)}
.spec-table{border:1px solid var(--line); border-radius:12px; overflow:hidden}
.spec-table .row{display:flex; gap:16px; padding:14px 18px}
.spec-table .row:nth-child(odd){background:var(--surface)}
.spec-table .row:nth-child(even){background:#FCF9F4}
.spec-table .k{width:120px; flex:none; color:var(--muted); font-size:14px; font-weight:600}
.spec-table .v{color:var(--ink); font-size:14px}
.pd-actions{display:flex; gap:14px; flex-wrap:wrap; margin-top:6px}

/* ===================== ARTICLE ===================== */
.article{max-width:820px; margin-inline:auto; display:flex; flex-direction:column; gap:28px}
.article__head{display:flex; flex-direction:column; gap:16px}
.article__meta{display:flex; align-items:center; gap:12px; flex-wrap:wrap; color:var(--muted); font-size:14px}
.article__meta .sep{color:var(--line)}
.article__lead{color:var(--ink-soft)}
.article__hero{width:100%; aspect-ratio:820/440; object-fit:cover; border-radius:var(--r-lg)}
.article__cap{color:var(--muted); font-size:14px; margin-top:-12px}
.article__body{display:flex; flex-direction:column; gap:20px}
.article__body p{color:var(--ink-soft)}
.article__body h3{margin-top:8px}
.blockquote{background:var(--accent-soft); border-radius:12px; padding:28px; color:var(--brand); font-size:18px; font-weight:600; line-height:1.6}
.tags{display:flex; gap:10px; flex-wrap:wrap; margin-top:8px}
.tags a{padding:8px 14px; border-radius:var(--r-pill); background:var(--surface); border:1px solid var(--line);
  font-size:14px; color:var(--ink-soft)}
.tags a:hover{border-color:var(--brand); color:var(--brand)}

/* ===================== CONTACT ===================== */
.info-cards{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:24px}
.info-card{background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg); padding:28px;
  display:flex; flex-direction:column; gap:12px}
.info-card .icon-badge{margin-bottom:4px}
.info-card .k{color:var(--muted)}
.info-card .v{font-size:18px; font-weight:600; line-height:1.35; word-break:break-word}
.info-card .note{color:var(--ink-soft); font-size:14px}

.contact{position:relative; isolation:isolate; overflow:hidden; padding:88px 0}
.contact__bg{position:absolute; inset:0; z-index:-2; width:100%; height:100%; object-fit:cover}
.contact::after{content:""; position:absolute; inset:0; z-index:-1; background:rgba(104,59,20,.86)}
.contact__grid{display:grid; grid-template-columns:minmax(0,1fr) 520px; gap:64px; align-items:start}
.contact__info{color:var(--on-brand); display:flex; flex-direction:column; gap:20px}
.contact__info h2{color:var(--on-brand)}
.contact__lead{color:#EADFC9}
.contact__rows{display:flex; flex-direction:column; gap:16px; margin-top:12px}
.contact__company{font-weight:600}
.contact__row{display:flex; align-items:center; gap:14px}
.contact__ic{width:40px; height:40px; border-radius:var(--r-md); flex:none; display:grid; place-items:center; background:rgba(255,255,255,.10)}
.contact__ic svg{width:20px; height:20px}

/* contact-info nền sáng (trang Liên hệ) */
.contact-light{padding-top:72px}
.contact-light .contact__info{color:var(--ink)}
.contact-light .contact__info h2{color:var(--ink)}
.contact-light .contact__lead{color:var(--ink-soft)}
.contact-light .contact__company{color:var(--ink)}
.contact-light .contact__row{color:var(--ink)}
.contact-light .contact__ic{background:var(--accent); box-shadow:var(--shadow-gold)}

.form{background:var(--surface); border-radius:var(--r-lg); padding:32px; display:flex; flex-direction:column; gap:18px;
  box-shadow:0 10px 30px rgba(26,15,5,.15); border:1px solid var(--line)}
.field{display:flex; flex-direction:column; gap:8px}
.field > label{color:var(--ink-soft)}
.field input,.field textarea{font:inherit; color:var(--ink); width:100%; padding:14px 16px;
  border:1.5px solid var(--line); border-radius:var(--r-md); background:var(--surface); transition:.15s}
.field textarea{resize:vertical; min-height:110px}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field textarea:focus{outline:none; border-color:var(--brand); box-shadow:0 0 0 3px rgba(104,59,20,.10)}
.form__row{display:grid; grid-template-columns:1fr 1fr; gap:16px}

/* map (trang Liên hệ) */
.map-col{display:flex; flex-direction:column; gap:20px}
.map{position:relative; height:420px; border-radius:var(--r-lg); overflow:hidden;
  background:var(--surface-alt); border:1px solid var(--line);
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:74px 70px}
.map__road{position:absolute; left:0; right:0; top:48%; height:14px; background:#EADCC4}
.map__pin{position:absolute; left:50%; top:44%; transform:translate(-50%,-50%)}
.map__pin svg{width:56px; height:56px}
.map__label{position:absolute; left:24px; top:24px; background:var(--surface); border-radius:var(--r-md);
  padding:12px 16px; box-shadow:var(--shadow-md)}
.map__label b{display:block; font-size:14px; font-weight:600}
.map__label span{font-size:14px; color:var(--muted)}
.note-hotline{background:var(--accent-soft); border-radius:12px; padding:24px; display:flex; flex-direction:column; gap:8px}
.note-hotline .label{color:var(--accent-hover)}

/* ===================== CTA BAND (ảnh nền + phủ nâu) ===================== */
.cta-band{position:relative; isolation:isolate; overflow:hidden; padding:80px 0}
.cta-band__bg{position:absolute; inset:0; z-index:-2; width:100%; height:100%; object-fit:cover}
.cta-band::after{content:""; position:absolute; inset:0; z-index:-1; background:rgba(104,59,20,.88)}
.cta-band__inner{text-align:center; display:flex; flex-direction:column; align-items:center; gap:22px}
.cta-band h2{color:var(--on-brand)}
.cta-band p{color:#EADFC9}
.cta-band__actions{display:flex; gap:16px; flex-wrap:wrap; justify-content:center}

/* ===================== FOOTER ===================== */
.footer{background:var(--brand-deep); color:var(--on-brand); padding:64px 0 48px}
.footer__top{display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:64px}
.footer__brand img{height:98px; width:auto}
.footer__desc{color:#D8CBB8; margin-top:16px; max-width:420px}
.footer__hotline{display:block; margin-top:16px; color:var(--accent); font-weight:600}
.footer__col h3{color:var(--accent); margin-bottom:14px}
.footer__col li + li{margin-top:14px}
.footer__col a{color:#D8CBB8}
.footer__col a:hover{color:var(--on-brand)}
.social{display:flex; gap:12px; flex-wrap:wrap}
.social a{display:inline-flex; align-items:center; gap:8px; font-size:14px; padding:10px 16px 10px 12px;
  border-radius:var(--r-md); background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.16); color:var(--on-brand)}
.social a:hover{background:rgba(255,255,255,.16)}
.social svg{width:18px; height:18px}
.footer__bar{margin-top:40px; padding-top:24px; border-top:1px solid rgba(255,255,255,.12); color:#9E8E78; font-size:14px}

/* ===================== RESPONSIVE ===================== */
@media (max-width:1100px){
  .grid-products > .card{width:calc((100% - 48px) / 3)}
  .grid-commit{grid-template-columns:repeat(2,minmax(0,1fr))}
  .info-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pd-grid{grid-template-columns:1fr; gap:32px}
  .contact__grid{grid-template-columns:1fr; gap:40px}
  .footer__top{grid-template-columns:1fr 1fr; gap:40px}
}
@media (max-width:900px){
  .h1{font-size:38px} .h2{font-size:28px} .stat{font-size:42px}
  .section{padding:64px 0}
  .nav{padding:0 20px}
  .nav__links,.nav__right .lang{display:none}
  .nav__burger{display:grid; place-items:center; width:44px; height:44px; border-radius:var(--r-md); border:1px solid var(--line)}
  .nav__burger svg{width:22px; height:22px}
  .nav.is-open .nav__links{display:flex; flex-direction:column; align-items:flex-start; gap:4px;
    position:absolute; left:0; right:0; top:calc(100% + 8px); background:var(--surface);
    border:1px solid var(--line); border-radius:var(--r-lg); padding:16px 20px; box-shadow:var(--shadow-lg); z-index:20}
  .nav__link{flex-direction:row; padding:10px 0}
  .nav__link::after{display:none}
  .grid-products > .card{width:calc((100% - 24px) / 2)}
  .about__grid,.story__grid{grid-template-columns:1fr; gap:32px}
  .story__grid .story__img{order:-1}
  .grid-news,.grid-3,.gallery{grid-template-columns:1fr}
  .stats__row{flex-wrap:wrap; justify-content:flex-start; gap:32px 48px}
  .stats__div{display:none}
  .hero__content{padding-top:96px}
  .page-banner__content{padding:130px 0 40px}
  .page-banner--slim .page-banner__content{padding:120px 0 32px}
}
@media (max-width:640px){
  .grid-products{gap:20px}
  .grid-products > .card{width:100%}
  .grid-commit,.info-cards{grid-template-columns:1fr}
  .form__row{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr; gap:32px}
  .card__body{padding:18px}
  .h1{font-size:31px}
  .nav__cta{padding:10px 16px; font-size:14px}
  .nav__logo img{height:64px}
  .note-band{flex-direction:column; align-items:flex-start}
  .pd-thumbs{grid-template-columns:repeat(3,1fr)}
}