/* =========================================================
   MINH PHÁT MATERIALS — shared stylesheet
   Palette: industrial black / brushed steel / machine-yellow
   ========================================================= */

:root{
  --bg:        #0b0c0e;
  --surface:   #16171a;
  --surface-2: #1e2024;
  --border:    #2e3136;
  --text:      #f2f3f4;
  --text-dim:  #9ba0a6;
  --text-dim-2:#6d7278;
  --accent:    #e2231a;
  --accent-2:  #ff5c52;
  --accent-ink:#ffffff;

  --font-head: "Oswald", sans-serif;
  --font-body: "Work Sans", sans-serif;

  --container: 1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:600;
  line-height:1.28;
  margin:0 0 .5em;
  letter-spacing:.2px;
}
p{margin:0 0 1em;color:var(--text-dim);}
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 26px;
  font-family:var(--font-head);
  font-size:15px;
  font-weight:500;
  letter-spacing:.3px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{background:var(--accent-2);}
.btn-outline{border-color:var(--border);color:var(--text);}
.btn-outline:hover{border-color:var(--text-dim);}
.btn-block{width:100%;justify-content:center;}

/* ---------- top utility bar ---------- */
.topbar{
  background:var(--surface);
  border-bottom:1px solid var(--border);
  font-size:13.5px;
  color:var(--text-dim);
}
.topbar .container{
  display:flex;justify-content:space-between;align-items:center;
  height:38px;flex-wrap:wrap;gap:6px;
}
.topbar a{color:var(--text-dim);}
.topbar a:hover{color:var(--accent-2);}
.topbar .sep{margin:0 10px;color:var(--text-dim-2);}

/* ---------- header / nav ---------- */
header.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,12,14,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--border);
}
.nav-row{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;
  min-height:92px;
  padding-top:14px;
  padding-bottom:14px;
}
.logo{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--font-head);
  font-size:24px;font-weight:700;letter-spacing:.3px;
  color:var(--text);
  white-space:nowrap;
  flex:none;
}
.logo img{height:58px;width:auto;display:block;flex:none;}
.logo span{color:var(--accent-2);font-size:24px;}
nav.main-nav{display:flex;align-items:center;flex:1;min-width:0;}
nav.main-nav > ul{display:flex;align-items:center;flex-wrap:nowrap;}
nav.main-nav > ul > li{position:relative;}
nav.main-nav > ul > li > a{
  display:block;padding:14px 13px;
  font-family:var(--font-head);
  font-size:14.5px;font-weight:500;
  color:var(--text-dim);
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color .15s ease, border-color .15s ease;
}
nav.main-nav > ul > li > a:hover,
nav.main-nav > ul > li.active > a{
  color:var(--text);border-color:var(--accent);
}
.dropdown{
  position:absolute;top:100%;left:0;
  min-width:240px;
  background:var(--surface);
  border:1px solid var(--border);
  border-top:2px solid var(--accent);
  padding:8px 0;
  display:none;
  box-shadow:0 20px 40px rgba(0,0,0,.35);
}
nav.main-nav > ul > li:hover .dropdown{display:block;}
.dropdown a{
  display:block;padding:10px 20px;
  font-size:14px;color:var(--text-dim);
  border-bottom:none !important;
}
.dropdown a:hover{background:var(--surface-2);color:var(--accent-2);}
.header-cta{display:flex;align-items:center;gap:16px;flex:none;}
.header-phone{
  display:flex;flex-direction:column;line-height:1.2;
  font-size:13px;color:var(--text-dim);
  white-space:nowrap;
}
.header-phone strong{
  font-family:var(--font-head);font-size:18px;color:var(--accent-2);
  letter-spacing:.5px;
}
.header-cta .btn{white-space:nowrap;padding:12px 20px;}
.nav-toggle{
  display:none;background:none;border:1px solid var(--border);
  color:var(--text);width:44px;height:44px;cursor:pointer;
  font-size:20px;
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  background:var(--surface);
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:
    repeating-linear-gradient(115deg, transparent 0 64px, rgba(255,255,255,.025) 64px 66px),
    linear-gradient(100deg, var(--surface) 42%, rgba(232,185,35,.06) 100%);
}
.hero-inner{
  position:relative;
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;
  align-items:center;
  padding-top:96px;
  padding-bottom:96px;
}
.hero-eyebrow{
  color:#f2c94c;font-family:var(--font-head);
  font-size:15px;font-weight:500;margin-bottom:18px;
  display:flex;align-items:center;gap:10px;
}
.hero-eyebrow::before{content:"";width:28px;height:2px;background:#e7b922;display:inline-block;}
.hero .btn-primary{background:#e7b922;color:#1a1a1a;}
.hero .btn-primary:hover{background:#f2c94c;}
.hero h1{
  font-size:clamp(34px,4.4vw,54px);
  color:var(--text);
  max-width:14ch;
}
.hero p.lead{
  font-size:17px;max-width:46ch;margin-bottom:32px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-panel{
  position:relative;
  border:1px solid var(--border);
  background:var(--surface-2);
  aspect-ratio:4/3;
  overflow:hidden;
}
.hero-panel img{width:100%;height:100%;object-fit:cover;}
.hero-panel .tag{
  position:absolute;bottom:0;left:0;right:0;
  background:rgba(11,12,14,.82);
  border-top:2px solid #e7b922;
  padding:14px 18px;font-family:var(--font-head);font-size:14px;
}

/* ---------- section basics ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  gap:24px;margin-bottom:44px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(26px,3vw,36px);max-width:20ch;}
.section-head p{max-width:44ch;margin:0;}

/* ---------- stats ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--border);
}
.stat{
  padding:32px 24px;text-align:left;
  border-right:1px solid var(--border);
}
.stat:last-child{border-right:none;}
.stat .num{
  font-family:var(--font-head);font-size:40px;color:var(--accent-2);
  display:block;
}
.stat .label{color:var(--text-dim);font-size:14px;}

/* ---------- product / service grid ---------- */
.grid{display:grid;gap:1px;background:var(--border);border:1px solid var(--border);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.card{
  background:var(--bg);
  display:flex;flex-direction:column;
}
.card .thumb{
  aspect-ratio:4/3;overflow:hidden;background:var(--surface-2);
  position:relative;
}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .thumb img{transform:scale(1.05);}
.card .thumb .idx{
  position:absolute;top:12px;left:12px;
  background:var(--accent);color:var(--accent-ink);
  font-family:var(--font-head);font-size:13px;font-weight:600;
  padding:4px 9px;
}
.card-body{padding:26px;flex:1;display:flex;flex-direction:column;}
.card-body h3{font-size:20px;margin-bottom:10px;}
.card-body p{font-size:14.5px;flex:1;}
.card-body .spec{font-size:13px;color:var(--text-dim-2);margin-bottom:4px;}
.card-body .spec b{color:var(--text-dim);}
.card-link{
  margin-top:16px;font-family:var(--font-head);font-size:14px;
  color:var(--accent-2);display:inline-flex;align-items:center;gap:6px;
}

/* ---------- process ---------- */
.process{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  position:relative;
}
.process::before{
  content:"";position:absolute;top:22px;left:6%;right:6%;height:1px;
  background:var(--border);
}
.step{padding:0 20px;position:relative;}
.step .n{
  width:44px;height:44px;border:1px solid var(--accent-2);
  color:var(--accent-2);font-family:var(--font-head);font-size:17px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg);position:relative;z-index:1;margin-bottom:18px;
}
.step h4{font-size:17px;}
.step p{font-size:14px;}

/* ---------- news ---------- */
.news-card .meta{font-size:12.5px;color:var(--text-dim-2);margin-bottom:8px;}
.news-card h3{font-size:18px;}
.news-card p{font-size:14px;}

/* ---------- cta banner ---------- */
.cta-banner{
  background:var(--accent);color:var(--accent-ink);
  padding:56px 0;
}
.cta-banner .container{
  display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
}
.cta-banner h2{color:var(--accent-ink);font-size:28px;margin:0;}
.cta-banner p{color:rgba(26,20,1,.72);margin:6px 0 0;}
.cta-banner .btn-primary{background:var(--accent-ink);color:var(--accent);}
.cta-banner .btn-primary:hover{background:#000;color:var(--accent-2);}
.cta-banner .btn-primary:hover{background:#000;}

/* ---------- footer ---------- */
footer.site-footer{
  background:var(--surface);border-top:1px solid var(--border);
  padding:64px 0 0;font-size:14.5px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
  padding-bottom:48px;border-bottom:1px solid var(--border);
}
.footer-grid h4{font-size:15px;color:var(--text);margin-bottom:18px;}
.footer-grid li{margin-bottom:10px;color:var(--text-dim);}
.footer-grid a:hover{color:var(--accent-2);}
.footer-bottom{
  padding-top:20px;padding-bottom:20px;
  display:flex;justify-content:space-between;
  color:var(--text-dim-2);font-size:13px;flex-wrap:wrap;gap:8px;
}

/* ---------- page header (inner pages) ---------- */
.page-head{
  background:var(--surface);border-bottom:1px solid var(--border);
  padding:52px 0;
}
.page-head .crumb{font-size:13.5px;color:var(--text-dim-2);margin-bottom:10px;}
.page-head .crumb a:hover{color:var(--accent-2);}
.page-head h1{font-size:clamp(28px,3.6vw,40px);margin:0;}

/* ---------- generic content blocks ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);}
.values .v{background:var(--bg);padding:28px;}
.values .v h4{color:var(--accent-2);font-size:17px;}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--border);}
.contact-info{padding:44px;background:var(--surface);}
.contact-info .row{display:flex;gap:14px;margin-bottom:24px;}
.contact-info .row .ico{
  width:38px;height:38px;flex:none;border:1px solid var(--accent-2);
  color:var(--accent-2);display:flex;align-items:center;justify-content:center;
}
.contact-info .row h4{font-size:15px;margin-bottom:4px;color:var(--text);}
.contact-info .row p{margin:0;font-size:14px;}
.map-embed{background:var(--surface-2);min-height:100%;display:flex;align-items:center;justify-content:center;}
.map-embed iframe{width:100%;height:100%;min-height:420px;border:0;filter:grayscale(1) invert(.92) contrast(.9);}

form.contact-form{padding:44px;}
form.contact-form .field{margin-bottom:18px;}
form.contact-form label{display:block;font-size:13.5px;color:var(--text-dim);margin-bottom:6px;}
form.contact-form input,
form.contact-form textarea{
  width:100%;background:var(--bg);border:1px solid var(--border);
  color:var(--text);padding:12px 14px;font-family:var(--font-body);font-size:14.5px;
}
form.contact-form input:focus,
form.contact-form textarea:focus{outline:2px solid var(--accent-2);outline-offset:1px;}
.form-note{font-size:13px;color:var(--text-dim-2);margin-top:10px;}

.news-list-item{
  display:grid;grid-template-columns:280px 1fr;gap:28px;
  padding:32px 0;border-bottom:1px solid var(--border);
}
.news-list-item .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--surface-2);}
.news-list-item .thumb img{width:100%;height:100%;object-fit:cover;}

.price-note{
  border:1px solid var(--border);background:var(--surface);
  padding:20px 24px;font-size:14px;color:var(--text-dim);margin-top:24px;
}
.price-note b{color:var(--accent-2);}

/* ---------- product carousel + lightbox ---------- */
.gallery-hint{
  display:flex;align-items:center;gap:8px;
  color:var(--text-dim-2);font-size:13.5px;margin:-8px 0 28px;
}
.gallery-hint::before{content:"⛶";color:var(--accent-2);font-size:15px;}

.carousel{position:relative;}
.carousel-viewport{
  position:relative;width:100%;height:min(60vh,560px);
  background:var(--surface-2);border:1px solid var(--border);
  overflow:hidden;
}
.carousel-track{
  display:flex;height:100%;
  transition:transform .45s cubic-bezier(.65,.05,.36,1);
}
.carousel-slide{
  flex:0 0 100%;height:100%;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
}
.carousel-slide img{
  max-width:100%;max-height:100%;width:auto;height:auto;
  object-fit:contain;pointer-events:none;
}
.carousel-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  width:46px;height:46px;z-index:2;
  background:rgba(11,12,14,.7);border:1px solid var(--border);
  color:var(--text);font-size:20px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.carousel-btn:hover{border-color:var(--accent-2);color:var(--accent-2);}
.carousel-prev{left:14px;}
.carousel-next{right:14px;}
.carousel-counter{
  position:absolute;bottom:14px;right:14px;z-index:2;
  background:rgba(11,12,14,.78);color:var(--text-dim);
  font-size:12.5px;padding:5px 10px;border:1px solid var(--border);
}
.carousel-thumbs{
  display:flex;gap:10px;overflow-x:auto;
  margin-top:14px;padding-bottom:6px;
  -webkit-overflow-scrolling:touch;
}
.carousel-thumbs::-webkit-scrollbar{height:6px;}
.carousel-thumbs::-webkit-scrollbar-track{background:var(--surface);}
.carousel-thumbs::-webkit-scrollbar-thumb{background:var(--border);}
.carousel-thumb{
  flex:0 0 auto;width:88px;height:66px;padding:0;
  border:1px solid var(--border);background:var(--surface-2);
  overflow:hidden;cursor:pointer;opacity:.55;transition:opacity .2s,border-color .2s;
}
.carousel-thumb img{width:100%;height:100%;object-fit:cover;}
.carousel-thumb:hover{opacity:.85;}
.carousel-thumb.active{opacity:1;border-color:var(--accent-2);}
.carousel.single .carousel-btn,
.carousel.single .carousel-counter,
.carousel.single .carousel-thumbs{display:none;}

@media (max-width:640px){
  .carousel-viewport{height:min(48vh,380px);}
  .carousel-btn{width:38px;height:38px;font-size:16px;}
  .carousel-prev{left:8px;}
  .carousel-next{right:8px;}
  .carousel-thumb{width:70px;height:52px;}
}

.lightbox{
  position:fixed;inset:0;z-index:200;
  background:rgba(6,6,7,.94);
  display:none;
  align-items:center;justify-content:center;
  padding:24px;
}
.lightbox.open{display:flex;}
.lightbox-inner{
  position:relative;max-width:1100px;width:100%;
  display:flex;flex-direction:column;align-items:center;
}
.lightbox-frame{
  position:relative;width:100%;
  display:flex;align-items:center;justify-content:center;
}
.lightbox-frame img{
  max-height:78vh;max-width:100%;object-fit:contain;
  border:1px solid var(--border);background:var(--surface);
}
.lightbox-close{
  position:absolute;top:-46px;right:0;
  width:38px;height:38px;
  background:transparent;border:1px solid var(--border);
  color:var(--text);font-size:20px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.lightbox-close:hover{border-color:var(--accent-2);color:var(--accent-2);}
.lightbox-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:46px;height:46px;
  background:rgba(11,12,14,.7);border:1px solid var(--border);
  color:var(--text);font-size:20px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.lightbox-nav:hover{border-color:var(--accent-2);color:var(--accent-2);}
.lightbox-prev{left:-8px;}
.lightbox-next{right:-8px;}
.lightbox-meta{
  display:flex;justify-content:space-between;align-items:center;
  width:100%;margin-top:14px;color:var(--text-dim);font-size:14px;
}
.lightbox-meta .title{color:var(--text);font-family:var(--font-head);font-size:16px;}

@media (max-width:720px){
  .lightbox-nav{width:38px;height:38px;font-size:16px;}
  .lightbox-prev{left:0;}
  .lightbox-next{right:0;}
  .lightbox-close{top:-42px;}
}


a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent-2);outline-offset:2px;
}

/* ---------- responsive ---------- */
html{overflow-x:hidden;}
body{overflow-x:hidden;}

/* Tablet / narrow desktop: trim non-essential header items before switching to hamburger */
@media (max-width:1080px){
  .header-phone{display:none;}
  nav.main-nav > ul > li > a{padding:14px 10px;font-size:14px;}
}

@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;padding-top:56px;padding-bottom:56px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:none;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .process{grid-template-columns:repeat(2,1fr);row-gap:32px;}
  .process::before{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .two-col{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .news-list-item{grid-template-columns:1fr;}
}

/* Mobile: full hamburger mode */
@media (max-width:900px){
  .topbar{display:none;}

  .nav-row{flex-wrap:wrap;min-height:78px;}
  .logo{font-size:19px;gap:10px;}
  .logo img{height:52px;}

  /* Nav collapses into a dropdown panel that pushes below the header,
     instead of a fixed off-canvas panel — simpler and avoids off-screen
     positioning glitches on some mobile browsers. */
  nav.main-nav{
    order:10;
    flex:0 0 100%;
    display:none;
    max-width:100%;
    background:var(--surface);
    border-top:1px solid var(--border);
    margin:10px -24px 0;
    padding:0;
  }
  nav.main-nav.open{display:block;}
  nav.main-nav > ul{flex-direction:column;align-items:stretch;width:100%;}
  nav.main-nav > ul > li > a{
    border-bottom:1px solid var(--border);
    padding:16px 24px;
    white-space:normal;
  }
  .dropdown{
    position:static;border:none;border-top:1px solid var(--border);
    background:var(--surface-2);display:none;box-shadow:none;
  }
  nav.main-nav > ul > li.open .dropdown{display:block;}

  .header-cta{gap:10px;}
  .header-cta .btn{padding:10px 14px;font-size:13.5px;}
  .header-phone{display:none;}
  .nav-toggle{display:block;order:9;}
}

@media (max-width:640px){
  .header-cta .btn-primary{display:none;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr 1fr;}
  .values{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
}