/* ===== Trọng Tín Stone — v2 Luxury (navy + gold) ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Segoe UI',sans-serif;
  font-size:16px;line-height:1.6;
  color:#E8E4DD;
  background:#0F1626;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

/* ===== Brand palette ===== */
:root{
  --navy:#0F1626;          /* nền chính - navy đậm rất sang */
  --navy-2:#162033;        /* navy nhạt hơn 1 chút */
  --navy-3:#1E2A40;        /* navy card */
  --navy-4:#2A3855;        /* navy hover */
  --gold:#D4A857;          /* gold chủ đạo */
  --gold-light:#E8C97D;    /* gold sáng */
  --gold-dark:#B58841;     /* gold đậm */
  --text:#E8E4DD;          /* text chính */
  --text-muted:#A8A29E;    /* text phụ */
  --text-dim:#6B7280;      /* text mờ */
  --white:#FFFFFF;
  --border:rgba(212,168,87,0.15);
  --border-soft:rgba(255,255,255,0.08);
}

/* Light section (xen kẽ tạo nhịp) */
.light-section{
  background:linear-gradient(180deg,#F8F5EF 0%,#F2EDE3 100%);
  color:#1A1A1A;
}
.light-section h1,.light-section h2,.light-section h3,.light-section h4{color:#1A1A1A}
.light-section p{color:#5C5754}

/* ===== Typography ===== */
h1,h2,h3,h4,h5,h6{font-family:'Playfair Display','Georgia',serif;font-weight:700;line-height:1.3;letter-spacing:.3px}
.font-heading{font-family:'Playfair Display','Georgia',serif}
.font-body{font-family:'Inter','Segoe UI',sans-serif}

/* ===== Container ===== */
.container{max-width:1280px;margin:0 auto;padding:0 20px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;border-radius:9999px;
  font-family:'Inter',sans-serif;font-weight:600;font-size:14px;letter-spacing:.3px;
  transition:all .25s ease;cursor:pointer;border:1.5px solid transparent;
  white-space:nowrap;
}
.btn:active{transform:scale(.97)}
.btn-gold{
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  color:#1A1A1A;
  box-shadow:0 4px 14px rgba(212,168,87,.3);
}
.btn-gold:hover{box-shadow:0 6px 20px rgba(212,168,87,.45);transform:translateY(-1px)}
.btn-outline-gold{background:transparent;border-color:var(--gold);color:var(--gold)}
.btn-outline-gold:hover{background:var(--gold);color:#1A1A1A}
.btn-outline-white{background:transparent;border-color:rgba(255,255,255,.25);color:#fff}
.btn-outline-white:hover{background:rgba(255,255,255,.08)}
.btn-dark{background:var(--navy-3);color:#fff;border-color:var(--navy-4)}
.btn-dark:hover{background:var(--navy-4)}
.btn-lg{padding:16px 36px;font-size:15px}
.btn-sm{padding:10px 22px;font-size:13px}
.btn-block{width:100%}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  padding:16px 0;transition:padding .3s ease;
}
.site-header.scrolled{padding:8px 0}
.site-header .nav-wrap{
  background:rgba(15,22,38,0.85);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--border);
  border-radius:9999px;padding:8px 16px 8px 24px;
  display:flex;align-items:center;justify-content:space-between;
  box-shadow:0 8px 32px rgba(0,0,0,.4);
}
.site-header .logo{display:flex;align-items:center;gap:12px}
.site-header .logo img{height:52px;width:auto;transition:height .3s}
.site-header.scrolled .logo img{height:44px}

.main-nav{display:flex;align-items:center;gap:2px}
.main-nav a{
  padding:8px 14px;border-radius:9999px;
  font-family:'Inter',sans-serif;font-weight:500;font-size:14px;
  color:rgba(232,228,221,.75);transition:all .2s;
}
.main-nav a:hover{color:var(--gold-light);background:rgba(255,255,255,.04)}
.main-nav a.active{color:var(--gold);position:relative}
.main-nav a.active::after{
  content:'';position:absolute;bottom:2px;left:14px;right:14px;height:2px;
  background:linear-gradient(90deg,var(--gold-light),var(--gold));border-radius:9999px;
}
.header-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{display:none;color:var(--gold);padding:8px}
.menu-toggle svg{width:24px;height:24px}

/* Mobile drawer */
.mobile-drawer{
  position:fixed;top:0;right:-340px;width:320px;height:100vh;
  background:var(--navy);z-index:60;
  transition:right .3s ease;padding:24px;
  display:flex;flex-direction:column;gap:20px;
  box-shadow:-10px 0 30px rgba(0,0,0,.5);overflow-y:auto;
}
.mobile-drawer.open{right:0}
.mobile-drawer .head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.mobile-drawer .head img{height:44px}
.mobile-drawer .close-btn{color:var(--gold);padding:8px}
.mobile-drawer .close-btn svg{width:22px;height:22px}
.mobile-drawer a.nav-item{
  font-family:'Inter',sans-serif;font-weight:500;font-size:16px;
  color:var(--text);padding:10px 0;border-bottom:1px solid var(--border-soft);
  transition:color .2s;
}
.mobile-drawer a.nav-item.active,
.mobile-drawer a.nav-item:hover{color:var(--gold)}
.mobile-drawer .actions{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:55;
  opacity:0;pointer-events:none;transition:opacity .3s;
}
.drawer-overlay.open{opacity:1;pointer-events:auto}

@media (max-width:1023px){
  .main-nav,.header-actions{display:none}
  .menu-toggle{display:flex;align-items:center;justify-content:center}
}

/* ===== Hero - tối nhẹ sang trọng ===== */
.hero{
  position:relative;min-height:100vh;
  display:flex;align-items:center;padding:120px 0 60px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(ellipse at 20% 30%,rgba(212,168,87,.10) 0%,transparent 50%),
    radial-gradient(ellipse at 80% 70%,rgba(212,168,87,.06) 0%,transparent 50%),
    linear-gradient(180deg,#0F1626 0%,#162033 100%);
}
.hero-bg::after{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(212,168,87,0.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(212,168,87,0.04) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse at center,#000 30%,transparent 70%);
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center}

.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 18px;border-radius:9999px;
  background:rgba(212,168,87,.10);border:1px solid rgba(212,168,87,.25);
  color:var(--gold-light);font-family:'Inter',sans-serif;font-weight:500;font-size:13px;
  letter-spacing:.5px;margin-bottom:28px;
}
.hero-badge::before{
  content:'';width:6px;height:6px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 8px var(--gold);
}
.hero h1{
  font-size:clamp(32px,5.5vw,60px);
  color:#fff;margin-bottom:24px;font-weight:700;line-height:1.15;
}
.hero h1 .gold-text{
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:clamp(15px,1.4vw,18px);color:rgba(255,255,255,.75);margin-bottom:36px;max-width:560px;line-height:1.7}
.hero .cta-group{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:56px}

.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;max-width:560px}
.stat{position:relative;padding-left:18px}
.stat::before{
  content:'';position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:linear-gradient(180deg,var(--gold-light),var(--gold));
  border-radius:9999px;
}
.stat-value{font-family:'Playfair Display',serif;font-size:34px;font-weight:700;color:var(--gold-light);line-height:1}
.stat-label{font-family:'Inter',sans-serif;font-size:12px;font-weight:500;color:rgba(255,255,255,.6);margin-top:6px;text-transform:uppercase;letter-spacing:1px}

/* Hero image showcase */
.hero-image{position:relative}
.hero-image-main{
  border-radius:20px;overflow:hidden;
  box-shadow:0 30px 60px rgba(0,0,0,.5),0 0 0 1px var(--border);
  aspect-ratio:4/5;
  position:relative;
}
.hero-image-main img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 6s ease;
}
.hero-image-main:hover img{transform:scale(1.05)}
.hero-image-main::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.5));
}
.hero-tag{
  position:absolute;top:24px;right:24px;z-index:2;
  background:rgba(15,22,38,.85);backdrop-filter:blur(10px);
  border:1px solid var(--border);
  padding:10px 20px;border-radius:9999px;
  color:var(--gold);font-family:'Inter',sans-serif;font-weight:500;font-size:13px;
}
.hero-card{
  position:absolute;left:-30px;bottom:30px;z-index:2;
  background:rgba(15,22,38,.92);backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:16px;padding:22px;
  max-width:280px;
  box-shadow:0 20px 40px rgba(0,0,0,.4);
}
.hero-card h3{color:var(--gold-light);font-size:16px;margin-bottom:6px}
.hero-card p{color:rgba(255,255,255,.7);font-size:13px;line-height:1.5}

@media (max-width:991px){
  .hero{min-height:auto;padding:110px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-image-main{aspect-ratio:1/1;max-width:500px;margin:0 auto}
  .hero-card{left:-15px;max-width:240px}
  .hero-stats{gap:20px}
  .stat-value{font-size:26px}
}
@media (max-width:640px){
  .hero-card{position:static;margin-top:-20px;max-width:none}
  .hero-stats{grid-template-columns:repeat(3,1fr);gap:14px}
  .stat-value{font-size:22px}
  .stat-label{font-size:10px}
}

/* ===== Sections ===== */
.section{padding:90px 0;position:relative;overflow:hidden}
.section-title{text-align:center;margin-bottom:60px}
.section-title .eyebrow{
  display:inline-block;font-family:'Inter',sans-serif;font-weight:600;font-size:13px;
  color:var(--gold);letter-spacing:2.5px;text-transform:uppercase;margin-bottom:14px;
}
.section-title h2{font-size:clamp(26px,3.5vw,42px);margin-bottom:18px;color:inherit}
.section-title h2 .gold-text{
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.section-title p{font-size:16px;color:var(--text-muted);max-width:720px;margin:0 auto;line-height:1.7}
.light-section .section-title p{color:#5C5754}

.section-decor{
  position:absolute;width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(212,168,87,.06) 0%,transparent 70%);
  pointer-events:none;
}
.section-decor.top-right{top:-300px;right:-300px}
.section-decor.bottom-left{bottom:-300px;left:-300px}

/* ===== Grids ===== */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:991px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
}

/* ===== Stat cards ===== */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:60px}
.stat-row .stat-card{
  background:rgba(255,255,255,.03);border:1px solid var(--border-soft);
  border-radius:16px;padding:32px 24px;text-align:center;
  transition:all .3s;
}
.stat-row .stat-card:hover{border-color:var(--border);background:rgba(212,168,87,.04);transform:translateY(-2px)}
.stat-row .stat-card .num{
  font-family:'Playfair Display',serif;font-size:48px;font-weight:700;
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1;margin-bottom:8px;
}
.stat-row .stat-card .lbl{color:var(--text-muted);font-size:14px;font-weight:500}
@media (max-width:640px){.stat-row{grid-template-columns:repeat(2,1fr);gap:14px}.stat-row .stat-card{padding:24px 14px}.stat-row .stat-card .num{font-size:32px}}

/* ===== Cards ===== */
.card{
  background:rgba(255,255,255,.03);border:1px solid var(--border-soft);
  border-radius:16px;padding:32px;
  transition:all .3s ease;
}
.card:hover{
  border-color:var(--border);
  background:rgba(212,168,87,.04);
  transform:translateY(-4px);
}
.card h3{font-size:19px;margin-bottom:12px;color:inherit}
.card p{font-size:14px;color:var(--text-muted);line-height:1.65}
.card .icon-box{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,rgba(212,168,87,.18),rgba(212,168,87,.08));
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--gold);
}
.card .icon-box svg{width:24px;height:24px}
.card .step-num{
  font-family:'Playfair Display',serif;font-size:54px;font-weight:700;
  background:linear-gradient(135deg,rgba(212,168,87,.4),rgba(212,168,87,.1));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1;margin-bottom:14px;
}

.light-section .card{
  background:#fff;border:1px solid #E8E1D2;
  box-shadow:0 2px 8px rgba(0,0,0,.04);
}
.light-section .card p{color:#5C5754}
.light-section .card:hover{box-shadow:0 12px 30px rgba(0,0,0,.08);border-color:var(--gold)}

/* ===== Stone gallery (Sản phẩm) ===== */
.stone-category{margin-bottom:80px}
.stone-category-head{
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid var(--border);
  flex-wrap:wrap;
}
.stone-category-head .title-wrap h3{
  font-size:26px;color:var(--gold-light);margin-bottom:6px;
}
.stone-category-head .title-wrap .price{
  color:var(--text-muted);font-family:'Inter',sans-serif;font-size:14px;font-weight:500;
}
.stone-category-head .title-wrap .price strong{color:var(--gold);font-weight:600}
.stone-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
}
@media (max-width:991px){.stone-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:640px){.stone-grid{grid-template-columns:repeat(2,1fr);gap:10px}}

.stone-item{
  position:relative;border-radius:12px;overflow:hidden;
  aspect-ratio:1/1;cursor:pointer;
  border:1px solid var(--border-soft);
  transition:all .3s ease;
}
.stone-item img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.stone-item:hover{border-color:var(--gold);transform:translateY(-3px)}
.stone-item:hover img{transform:scale(1.08)}
.stone-item::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(0,0,0,.6));
  opacity:0;transition:opacity .3s;pointer-events:none;
}
.stone-item:hover::after{opacity:1}
.stone-item .icon-eye{
  position:absolute;top:50%;left:50%;
  transform:translate(-50%,-50%) scale(.8);
  width:44px;height:44px;border-radius:50%;
  background:var(--gold);color:#1A1A1A;
  display:flex;align-items:center;justify-content:center;
  opacity:0;transition:all .3s;pointer-events:none;z-index:2;
}
.stone-item:hover .icon-eye{opacity:1;transform:translate(-50%,-50%) scale(1)}
.stone-item .icon-eye svg{width:20px;height:20px}

/* "Xem tất cả" button */
.view-all-wrap{text-align:center;margin-top:24px}

/* Hidden extra images (revealed by "view all") */
.stone-item.hidden{display:none}
.stone-item.revealing{display:block;animation:fadeIn .4s}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ===== Project cards ===== */
.project-card{
  position:relative;border-radius:18px;overflow:hidden;
  box-shadow:0 10px 30px rgba(0,0,0,.3);
  transition:all .4s ease;cursor:pointer;
  aspect-ratio:4/5;
  border:1px solid var(--border-soft);
}
.project-card:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(0,0,0,.5);border-color:var(--gold)}
.project-card img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .8s ease;
}
.project-card:hover img{transform:scale(1.08)}
.project-card::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 30%,rgba(0,0,0,.85) 100%);
  pointer-events:none;
}
.project-card .tag{
  position:absolute;top:18px;left:18px;z-index:2;
  background:rgba(15,22,38,.85);backdrop-filter:blur(10px);
  border:1px solid var(--gold);color:var(--gold);
  padding:6px 14px;border-radius:9999px;font-size:12px;font-weight:600;
  font-family:'Inter',sans-serif;letter-spacing:.5px;
}
.project-card .info{
  position:absolute;left:0;right:0;bottom:0;padding:24px;z-index:1;
}
.project-card .info h3{color:#fff;font-size:22px;margin-bottom:6px;line-height:1.3}
.project-card .info .location{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--gold-light);font-size:13px;font-weight:500;font-family:'Inter',sans-serif;
}
.project-card .count-badge{
  position:absolute;top:18px;right:18px;z-index:2;
  background:rgba(15,22,38,.85);backdrop-filter:blur(10px);
  color:#fff;padding:5px 12px;border-radius:9999px;font-size:12px;font-weight:600;
}

/* ===== Pricing table ===== */
.pricing-wrap{max-width:1100px;margin:0 auto}
.pricing-table{
  background:rgba(255,255,255,.03);border:1px solid var(--border);
  border-radius:18px;overflow:hidden;
}
.pricing-table .head{
  background:linear-gradient(135deg,rgba(212,168,87,.15),rgba(212,168,87,.05));
  padding:20px 28px;border-bottom:1px solid var(--border);
  display:flex;justify-content:space-between;align-items:center;
}
.pricing-table .head h3{color:var(--gold-light);font-size:22px}
.pricing-table .head .note{font-size:13px;color:var(--text-muted)}
.pricing-table .row{
  display:flex;justify-content:space-between;align-items:center;
  padding:18px 28px;border-bottom:1px solid var(--border-soft);gap:20px;
  transition:background .2s;
}
.pricing-table .row:last-child{border-bottom:none}
.pricing-table .row:hover{background:rgba(212,168,87,.04)}
.pricing-table .row .stone-name{
  font-family:'Playfair Display',serif;font-weight:600;font-size:17px;color:var(--text);
}
.pricing-table .row .stone-desc{
  font-size:13px;color:var(--text-dim);margin-top:2px;font-family:'Inter',sans-serif;
}
.pricing-table .row .price-cell{text-align:right;flex-shrink:0}
.pricing-table .row .price-cell .price{
  font-family:'Playfair Display',serif;font-weight:700;font-size:18px;
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.pricing-table .row .price-cell .unit{font-size:12px;color:var(--text-muted);margin-top:2px}
@media (max-width:640px){
  .pricing-table .row{padding:14px 18px;flex-direction:column;align-items:flex-start;gap:6px}
  .pricing-table .head{padding:16px 18px;flex-direction:column;align-items:flex-start;gap:6px}
  .pricing-table .row .price-cell{text-align:left}
}

.pricing-note-card{
  background:rgba(212,168,87,.06);border:1px solid var(--border);
  border-radius:18px;padding:32px;margin-top:24px;
}
.pricing-note-card h4{color:var(--gold-light);font-size:18px;margin-bottom:12px}
.pricing-note-card ul{margin-top:12px}
.pricing-note-card ul li{padding-left:22px;position:relative;margin-bottom:8px;color:var(--text-muted);font-size:14px}
.pricing-note-card ul li::before{content:'';position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--gold);border-radius:50%}

/* ===== App table (Ứng dụng) ===== */
.app-table-wrap{overflow-x:auto;border-radius:16px;border:1px solid var(--border)}
.app-table{
  width:100%;border-collapse:collapse;background:rgba(255,255,255,.02);
  min-width:600px;
}
.app-table th,.app-table td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--border-soft)}
.app-table th{
  background:linear-gradient(135deg,rgba(212,168,87,.18),rgba(212,168,87,.05));
  color:var(--gold-light);font-family:'Playfair Display',serif;font-weight:600;font-size:15px;
}
.app-table tr:last-child td{border-bottom:none}
.app-table tr:hover td{background:rgba(212,168,87,.04)}
.app-table td{font-size:14px;color:var(--text)}
.app-table td:first-child{color:var(--gold-light);font-weight:600;font-family:'Playfair Display',serif;font-size:15px}

/* ===== Quote Form ===== */
.quote-section{position:relative;padding:90px 0}
.quote-form-wrap{max-width:780px;margin:0 auto}
.quote-form-card{
  background:rgba(255,255,255,.04);backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:24px;padding:44px;
  box-shadow:0 30px 60px rgba(0,0,0,.3);
}
.quote-form-card .form-head{text-align:center;margin-bottom:32px}
.quote-form-card .form-head h2{font-size:30px;margin-bottom:14px;color:#fff}
.quote-form-card .form-head h2 .gold-text{
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.quote-form-card .form-head p{color:var(--text-muted);font-size:15px;line-height:1.7}

.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
.form-group{margin-bottom:18px}
.form-group label{
  display:block;font-family:'Inter',sans-serif;font-weight:500;
  font-size:13px;color:var(--text);margin-bottom:8px;
}
.form-group label .required{color:#F87171}
.form-control{
  width:100%;padding:13px 16px;
  background:rgba(15,22,38,.6);border:1px solid var(--border-soft);
  border-radius:10px;font-family:'Inter',sans-serif;font-size:14px;color:var(--text);
  transition:all .2s;
}
.form-control:focus{
  outline:none;border-color:var(--gold);
  box-shadow:0 0 0 3px rgba(212,168,87,.15);
  background:rgba(15,22,38,.9);
}
.form-control::placeholder{color:var(--text-dim)}
select.form-control{cursor:pointer;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23D4A857' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;background-size:14px;
  padding-right:40px;
}
textarea.form-control{resize:vertical;min-height:110px}
@media (max-width:640px){.form-row{grid-template-columns:1fr;gap:0;margin-bottom:0}}

/* Toast */
.toast{
  position:fixed;top:24px;right:24px;z-index:100;
  padding:16px 22px;border-radius:12px;
  font-size:14px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.3);
  transform:translateX(420px);transition:transform .35s ease;max-width:380px;
}
.toast.show{transform:translateX(0)}
.toast.success{background:linear-gradient(135deg,#10B981,#059669)}
.toast.error{background:linear-gradient(135deg,#EF4444,#DC2626)}
@media (max-width:640px){
  .toast{right:12px;left:12px;top:16px;max-width:none;transform:translateY(-100px)}
  .toast.show{transform:translateY(0)}
}

/* ===== Footer ===== */
.site-footer{
  background:#0A1019;color:rgba(255,255,255,.7);padding:70px 0 0;
  border-top:1px solid var(--border-soft);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;margin-bottom:48px}
@media (max-width:991px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr}}
.footer-col h4{color:var(--gold-light);font-size:16px;margin-bottom:18px;font-family:'Playfair Display',serif}
.footer-col p,.footer-col li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.65)}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{color:rgba(255,255,255,.65);transition:color .2s}
.footer-col ul li a:hover{color:var(--gold)}
.footer-col .info-label{
  color:var(--gold);font-weight:600;display:block;
  font-size:12px;margin-bottom:2px;text-transform:uppercase;letter-spacing:1px;font-family:'Inter',sans-serif;
}
.footer-col .info-item{margin-bottom:16px}
.footer-col .info-item p{margin-top:2px}
.footer-col .info-item a{color:var(--text);transition:color .2s}
.footer-col .info-item a:hover{color:var(--gold)}
.footer-logo img{height:64px;margin-bottom:18px}
.footer-bottom{
  border-top:1px solid var(--border-soft);padding:24px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.5)}
.social-links{display:flex;gap:10px}
.social-links a{
  width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.06);border:1px solid var(--border-soft);
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.7);transition:all .2s;
}
.social-links a:hover{background:var(--gold);color:#1A1A1A;border-color:var(--gold);transform:translateY(-2px)}
.social-links svg{width:18px;height:18px}

/* ===== Floating CTA ===== */
.floating-cta{position:fixed;bottom:20px;right:20px;z-index:40;display:flex;flex-direction:column;gap:12px}
.floating-cta a{
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:#fff;transition:all .2s;position:relative;
  box-shadow:0 6px 20px rgba(0,0,0,.4);
}
.floating-cta a.call{background:#10B981}
.floating-cta a.call:hover{background:#059669;transform:scale(1.05)}
.floating-cta a.zalo{background:#0068FF}
.floating-cta a.zalo:hover{background:#0052CC;transform:scale(1.05)}
.floating-cta a.fb{background:#1877F2}
.floating-cta a.fb:hover{background:#0d65d9;transform:scale(1.05)}
.floating-cta a.scroll-top{background:var(--navy-3);display:none;border:1px solid var(--border)}
.floating-cta a.scroll-top.show{display:flex}
.floating-cta a.scroll-top:hover{background:var(--navy-4)}
.floating-cta svg{width:26px;height:26px}
.floating-cta a::before{
  content:'';position:absolute;inset:-2px;border-radius:50%;
  border:2px solid currentColor;opacity:.3;animation:pulse-ring 2s infinite;
}
.floating-cta a.call::before,.floating-cta a.zalo::before{animation:pulse-ring 2s infinite}
.floating-cta a.scroll-top::before,.floating-cta a.fb::before{animation:none;opacity:0}
@keyframes pulse-ring{0%{transform:scale(1);opacity:.5}100%{transform:scale(1.5);opacity:0}}

/* ===== Page hero (sub pages) ===== */
.page-hero{
  position:relative;padding:160px 0 80px;text-align:center;overflow:hidden;
}
.page-hero::before{
  content:'';position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(ellipse at 50% 50%,rgba(212,168,87,.10) 0%,transparent 60%),
    linear-gradient(180deg,#0F1626 0%,#162033 100%);
}
.page-hero .eyebrow{
  display:inline-block;color:var(--gold);font-size:13px;letter-spacing:2.5px;
  text-transform:uppercase;font-weight:600;margin-bottom:14px;
}
.page-hero h1{font-size:clamp(32px,5vw,52px);color:#fff;margin-bottom:18px}
.page-hero h1 .gold-text{
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero p{font-size:17px;color:rgba(255,255,255,.7);max-width:720px;margin:0 auto;line-height:1.7}

/* ===== About flex (Giới thiệu home) ===== */
.about-flex{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:60px}
.about-flex img{border-radius:18px;aspect-ratio:4/5;width:100%;object-fit:cover;box-shadow:0 20px 40px rgba(0,0,0,.3)}
@media (max-width:991px){.about-flex{grid-template-columns:1fr;gap:40px}.about-flex img{aspect-ratio:16/10}}
.about-flex .text-side p{font-size:16px;color:var(--text-muted);line-height:1.8;margin-bottom:18px}
.light-section .about-flex .text-side p{color:#5C5754}

/* ===== Factory section ===== */
.factory-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:60px}
.factory-gallery .item{
  border-radius:14px;overflow:hidden;aspect-ratio:1/1;cursor:pointer;
  border:1px solid var(--border-soft);transition:all .3s;
}
.factory-gallery .item:hover{border-color:var(--gold);transform:translateY(-3px)}
.factory-gallery .item img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.factory-gallery .item:hover img{transform:scale(1.1)}
@media (max-width:991px){.factory-gallery{grid-template-columns:repeat(3,1fr)}}
@media (max-width:640px){.factory-gallery{grid-template-columns:repeat(2,1fr)}}

/* ===== Lightbox / modal contact ===== */
.contact-modal-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.75);z-index:100;
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .25s;
  padding:20px;backdrop-filter:blur(6px);
}
.contact-modal-overlay.open{opacity:1;pointer-events:auto}
.contact-modal{
  background:var(--navy-2);border:1px solid var(--gold);
  border-radius:20px;padding:40px;text-align:center;
  max-width:400px;width:100%;
  transform:scale(.95);transition:transform .25s;
  box-shadow:0 20px 60px rgba(0,0,0,.5);
}
.contact-modal-overlay.open .contact-modal{transform:scale(1)}
.contact-modal h3{color:var(--gold-light);font-size:22px;margin-bottom:12px}
.contact-modal p{color:var(--text-muted);font-size:14px;margin-bottom:24px}
.contact-modal .options{display:flex;flex-direction:column;gap:12px;margin-bottom:14px}
.contact-modal .close-modal{
  display:inline-block;color:var(--text-muted);font-size:13px;
  cursor:pointer;padding:8px;border-radius:8px;transition:color .2s;
}
.contact-modal .close-modal:hover{color:var(--gold)}

/* Photo lightbox (xem ảnh phóng to) */
.lightbox-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.95);z-index:110;
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .25s;padding:30px;
}
.lightbox-overlay.open{opacity:1;pointer-events:auto}
.lightbox-content{position:relative;max-width:90vw;max-height:90vh;display:flex;align-items:center;justify-content:center}
.lightbox-content img{max-width:90vw;max-height:85vh;border-radius:10px;box-shadow:0 20px 60px rgba(0,0,0,.5);object-fit:contain}
.lightbox-close{
  position:absolute;top:-50px;right:0;
  width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;
}
.lightbox-close:hover{background:rgba(255,255,255,.2)}
.lightbox-close svg{width:24px;height:24px}
.lightbox-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;
  transition:background .2s;
}
.lightbox-nav:hover{background:rgba(255,255,255,.2)}
.lightbox-nav.prev{left:-60px}
.lightbox-nav.next{right:-60px}
.lightbox-nav svg{width:24px;height:24px}
@media (max-width:768px){
  .lightbox-nav.prev{left:10px}
  .lightbox-nav.next{right:10px}
}

/* ===== Utilities ===== */
.text-center{text-align:center}
.mt-4{margin-top:32px}
.mb-4{margin-bottom:32px}
.hide-sm{display:initial}
@media (max-width:640px){.hide-sm{display:none}}