/* ============================================================
   MCM Flexible Stone - B2B Overseas Digital Marketing Website
   Design: Professional Architectural Magazine Style
   ============================================================ */

/* ── Reset & Base ─────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:"Segoe UI",system-ui,-apple-system,sans-serif;
  color:#1A1D20;
  background:#FFFFFF;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 24px}

/* ── Typography ───────────────────────────────────── */
h1{font-size:clamp(2rem,4vw,3rem);font-weight:700;line-height:1.2}
h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;line-height:1.3}
h3{font-size:1.25rem;font-weight:600;line-height:1.4}
h4{font-size:1.1rem;font-weight:600}
.section-label{
  font-size:0.8rem;
  text-transform:uppercase;
  letter-spacing:0.15em;
  color:#00A0E9;
  font-weight:600;
  margin-bottom:0.5rem;
}
.section-title{
  font-size:clamp(1.5rem,3vw,2rem);
  font-weight:700;
  margin-bottom:1rem;
  color:#1A1D20;
}
.section-subtitle{
  font-size:1.05rem;
  color:#4A5568;
  max-width:600px;
  margin-bottom:2.5rem;
}
.text-center{text-align:center}
.text-white{color:#FFFFFF}

/* ── Buttons ──────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 28px;border-radius:6px;font-size:0.95rem;
  font-weight:600;cursor:pointer;transition:all 0.2s;
  border:2px solid transparent;white-space:nowrap;
}
.btn-primary{
  background:#F58220;color:#FFF;border-color:#F58220;
}
.btn-primary:hover{background:#D96500;border-color:#D96500}
.btn-outline{
  background:transparent;color:#FFF;border-color:#FFF;
}
.btn-outline:hover{background:rgba(255,255,255,0.1)}
.btn-outline-dark{
  background:transparent;color:#1A1D20;border-color:#1A1D20;
}
.btn-outline-dark:hover{background:#1A1D20;color:#FFF}
.btn-whatsapp{
  background:#25D366;color:#FFF;border-color:#25D366;
}
.btn-whatsapp:hover{background:#1da851;border-color:#1da851}
.btn-lg{padding:16px 36px;font-size:1.05rem}

/* ── Header / Navigation ──────────────────────────── */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid #E5E7EB;
}
.site-header .container{
  display:flex;justify-content:space-between;align-items:center;
  height:72px;
}
.logo{
  display:flex;align-items:center;gap:8px;
  font-size:1.25rem;font-weight:700;color:#F5A623;
  letter-spacing:-0.02em;
}
.logo-icon{height:1.6em;width:auto;display:block}
.logo span{color:#00A0E9}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{
  font-size:0.9rem;font-weight:500;color:#4A5568;
  transition:color 0.2s;position:relative;
}
.nav-links a:hover,.nav-links a.active{color:#1A1D20}
.nav-links a::after{
  content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;
  background:#F58220;transition:width 0.2s;
}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{margin-left:8px}
.mobile-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.mobile-toggle span{display:block;width:24px;height:2px;background:#1A1D20;margin:5px 0;transition:0.3s}

/* ── Hero ─────────────────────────────────────────── */
.hero{
  position:relative;min-height:85vh;display:flex;align-items:center;
  background:#0A2540;color:#FFF;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;overflow:hidden;
}
.hero-bg img{
  width:100%;height:100%;object-fit:cover;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,37,64,0.55),rgba(10,37,64,0.35));
}
.hero-content{position:relative;max-width:700px;padding:80px 0}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);margin-bottom:1rem;line-height:1.15}
.hero p{font-size:1.15rem;color:rgba(255,255,255,0.8);margin-bottom:2rem;line-height:1.7}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-whatsapp{position:absolute;bottom:30px;right:0;display:flex;align-items:center;gap:10px;color:rgba(255,255,255,0.7);font-size:0.9rem}

/* ── Sections ─────────────────────────────────────── */
.section{padding:80px 0}
.section-bg{background:#F8F9FA}

/* ── Company Intro ────────────────────────────────── */
.company-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
}
.company-text h2{margin-bottom:1rem}
.company-text p{color:#4A5568;margin-bottom:1rem;font-size:1.05rem}
.company-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:2rem}
.stat-item{text-align:center;padding:20px;background:#FFF;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.04)}
.stat-num{font-size:2rem;font-weight:700;color:#00A0E9;line-height:1}
.stat-label{font-size:0.85rem;color:#4A5568;margin-top:6px}
.company-image{
  background:linear-gradient(135deg,#E5E7EB,#D1D5DB);
  border-radius:12px;min-height:400px;display:flex;
  align-items:center;justify-content:center;color:#9CA3AF;
  font-size:0.9rem;text-align:center;padding:40px;
}

/* ── Advantage Cards ──────────────────────────────── */
.advantages-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px;
}
.adv-card{
  padding:32px 24px;background:#FFF;border-radius:10px;
  border:1px solid #E5E7EB;transition:all 0.3s;
}
.adv-card:hover{border-color:#00A0E9;box-shadow:0 4px 20px rgba(0,160,233,0.08)}
.adv-icon{font-size:2rem;margin-bottom:1rem}
.adv-card h3{font-size:1.1rem;margin-bottom:0.5rem}
.adv-card p{font-size:0.9rem;color:#4A5568}

/* ── Product Grid ─────────────────────────────────── */
.product-grid,.project-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;
}
.product-card,.project-card{
  background:#FFF;border-radius:10px;overflow:hidden;
  border:1px solid #E5E7EB;transition:all 0.3s;
}
.product-card:hover,.project-card:hover{
  transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.08);
}
.product-img,.project-img{
  aspect-ratio:4/3;background:linear-gradient(135deg,#E5E7EB,#D1D5DB);
  display:flex;align-items:center;justify-content:center;
  color:#9CA3AF;font-size:0.85rem;position:relative;overflow:hidden;
}
.product-img span,.project-img span{
  background:rgba(0,0,0,0.5);color:#FFF;padding:4px 12px;
  border-radius:4px;font-size:0.75rem;
}
.product-info,.project-info{padding:20px}
.product-info h3,.project-info h3{font-size:1.1rem;margin-bottom:8px}
.product-info p,.project-info p{font-size:0.9rem;color:#4A5568;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-actions{display:flex;gap:8px;flex-wrap:wrap}
.btn-sm{padding:8px 16px;font-size:0.82rem;border-radius:4px}

/* ── Applications Grid ────────────────────────────── */
.app-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:24px}
.app-card{
  position:relative;border-radius:10px;overflow:hidden;
  aspect-ratio:16/10;cursor:pointer;
}
.app-card img{width:100%;height:100%;object-fit:cover}
.app-img-placeholder{
  width:100%;height:100%;background:linear-gradient(135deg,#2A3A4A,#1A2D3D);
  display:flex;align-items:center;justify-content:center;color:#FFF;
  font-size:0.85rem;
}
.app-overlay{
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(0,0,0,0.7),transparent);
  display:flex;align-items:flex-end;padding:24px;
}
.app-overlay h3{color:#FFF;font-size:1.2rem}

/* ── Factory Page ─────────────────────────────────── */
.factory-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;
}
.factory-card{
  background:#FFF;border-radius:10px;overflow:hidden;
  border:1px solid #E5E7EB;transition:all 0.3s;
}
.factory-card:hover{
  transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.08);
}
.factory-img{
  aspect-ratio:4/3;background:linear-gradient(135deg,#E5E7EB,#D1D5DB);
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;position:relative;
}
.factory-img img{
  width:100%;height:100%;object-fit:cover;
}
.factory-card h3{font-size:1.05rem;margin:16px 16px 6px}
.factory-card p{font-size:0.9rem;color:#4A5568;margin:0 16px 16px}

/* ── Factory Visit CTA ────────────────────────────── */
.factory-visit-cta{
  padding:50px 40px;background:#F8F9FA;border-radius:12px;
  text-align:center;margin-bottom:60px;
}
.factory-visit-cta h2{margin:12px 0}
.factory-visit-cta > p{color:#4A5568;max-width:600px;margin:0 auto 24px}
.factory-visit-img{
  max-width:700px;margin:0 auto 24px;aspect-ratio:16/9;
  background:linear-gradient(135deg,#E5E7EB,#D1D5DB);
  border-radius:8px;overflow:hidden;
}
.factory-visit-img img{width:100%;height:100%;object-fit:cover}

/* ── Certifications Bar ───────────────────────────── */
.cert-bar{
  display:flex;gap:40px;flex-wrap:wrap;justify-content:center;
  align-items:center;padding:40px 0;
}
.cert-item{
  display:flex;align-items:center;gap:12px;
  padding:16px 24px;background:#FFF;border-radius:8px;
  border:1px solid #E5E7EB;
}
.cert-icon{font-size:1.5rem;color:#00A0E9}
.cert-text{font-size:0.95rem;font-weight:600}

/* ── Blog Cards ───────────────────────────────────── */
.blog-card{
  background:#FFF;border-radius:10px;overflow:hidden;
  border:1px solid #E5E7EB;transition:all 0.3s;
}
.blog-card:hover{box-shadow:0 8px 30px rgba(0,0,0,0.06)}
.blog-img{
  aspect-ratio:16/9;background:linear-gradient(135deg,#E5E7EB,#D1D5DB);
  overflow:hidden;display:flex;align-items:center;justify-content:center;color:#9CA3AF;font-size:0.8rem;
}
.blog-img img{width:100%;height:100%;object-fit:cover;display:block}
.blog-body{padding:20px}
.blog-date{font-size:0.8rem;color:#9CA3AF;margin-bottom:8px}
.blog-body h3{font-size:1.1rem;margin-bottom:8px;line-height:1.4}
.blog-body p{font-size:0.9rem;color:#4A5568;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.blog-tag{display:inline-block;padding:2px 10px;background:#F0F5FF;color:#00A0E9;border-radius:12px;font-size:0.75rem;font-weight:500}

/* ── FAQ ──────────────────────────────────────────── */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid #E5E7EB;padding:0}
.faq-q{
  width:100%;padding:20px 0;background:none;border:none;cursor:pointer;
  font-size:1.05rem;font-weight:600;text-align:left;color:#1A1D20;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-q::after{content:'+';font-size:1.3rem;color:#00A0E9;font-weight:400;transition:0.3s}
.faq-item.open .faq-q::after{content:'−';transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 0.3s ease,padding 0.3s ease;color:#4A5568;font-size:0.95rem;line-height:1.8}
.faq-item.open .faq-a{max-height:400px;padding-bottom:20px}

/* ── Contact Page ─────────────────────────────────── */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px}
.contact-info h3{margin-bottom:1rem}
.contact-info p{color:#4A5568;margin-bottom:2rem}
.contact-methods{display:flex;flex-direction:column;gap:20px}
.contact-method{display:flex;align-items:center;gap:14px}
.contact-method-icon{
  width:48px;height:48px;background:#F0F5FF;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:1.2rem;
}
.contact-method .label{font-size:0.8rem;color:#9CA3AF}
.contact-method .value{font-weight:600}
.contact-form{background:#FFF;padding:32px;border-radius:12px;border:1px solid #E5E7EB}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:0.9rem;font-weight:500;margin-bottom:6px}
.form-group input,.form-group textarea{
  width:100%;padding:12px 16px;border:1px solid #E5E7EB;border-radius:6px;
  font-size:0.95rem;font-family:inherit;transition:border 0.2s;
  background:#F8F9FA;
}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#00A0E9;background:#FFF}
.form-group textarea{min-height:120px;resize:vertical}

/* ── CTA Bar ──────────────────────────────────────── */
.cta-bar{
  background:#F58220;color:#FFF;padding:60px 0;text-align:center;
}
.cta-bar h2{color:#FFF;margin-bottom:1rem}
.cta-bar p{color:rgba(255,255,255,0.85);margin-bottom:2rem;max-width:600px;margin-left:auto;margin-right:auto}
.cta-bar .btn-primary{background:#FFF;color:#F58220;border-color:#FFF}
.cta-bar .btn-primary:hover{background:#F8F9FA}

/* ── Floating WhatsApp ────────────────────────────── */
.float-wa{
  position:fixed;bottom:24px;right:24px;z-index:999;
  width:56px;height:56px;background:#25D366;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 20px rgba(37,211,102,0.4);
  cursor:pointer;transition:transform 0.3s;
  font-size:1.5rem;
}
.float-wa:hover{transform:scale(1.1)}
.float-wa-popup{
  position:fixed;bottom:90px;right:24px;z-index:999;
  background:#FFF;border-radius:12px;padding:20px;width:280px;
  box-shadow:0 8px 40px rgba(0,0,0,0.12);display:none;
}
.float-wa-popup.show{display:block}
.float-wa-popup h4{font-size:0.95rem;margin-bottom:12px}
.float-wa-popup p{font-size:0.85rem;color:#4A5568;margin-bottom:16px}
.float-wa-popup .btn-whatsapp{width:100%;justify-content:center}

/* ── Footer ───────────────────────────────────────── */
.site-footer{
  background:#0A2540;color:rgba(255,255,255,0.7);
  padding:60px 0 30px;
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;
  margin-bottom:40px;
}
.footer-col h4{color:#FFF;font-size:1rem;margin-bottom:1.2rem}
.footer-col p{font-size:0.9rem;line-height:1.8}
.footer-col a{display:block;font-size:0.9rem;color:rgba(255,255,255,0.6);padding:4px 0;transition:color 0.2s}
.footer-col a:hover{color:#FFF}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  padding-top:24px;display:flex;justify-content:space-between;
  font-size:0.85rem;flex-wrap:wrap;gap:12px;
}

/* ── Breadcrumb ───────────────────────────────────── */
.breadcrumb{
  padding:16px 0;font-size:0.85rem;color:#4A5568;
}
.breadcrumb a{color:#00A0E9}
.breadcrumb span{color:#9CA3AF}

/* ── Page Header ──────────────────────────────────── */
.page-header{
  background:#0A2540;color:#FFF;padding:60px 0;text-align:center;
}
.page-header h1{font-size:clamp(1.8rem,3vw,2.5rem);margin-bottom:0.8rem}
.page-header p{color:rgba(255,255,255,0.7);max-width:600px;margin:0 auto}

/* ── Filter Tabs ──────────────────────────────────── */
.filter-tabs{
  display:flex;gap:8px;flex-wrap:wrap;margin-bottom:32px;justify-content:center;
}
.filter-tab{
  padding:8px 20px;border-radius:20px;border:1px solid #E5E7EB;
  background:#FFF;font-size:0.9rem;cursor:pointer;transition:all 0.2s;
}
.filter-tab:hover,.filter-tab.active{
  background:#00A0E9;border-color:#00A0E9;color:#FFF;
}

/* ── Hot Tag ───────────────────────────────────────── */
.hot-tag{
  background:#F58220;color:#FFF;padding:3px 10px;border-radius:10px;
  font-size:0.7rem;font-weight:700;position:absolute;top:10px;right:10px;z-index:2;
}
.product-img-name{
  background:rgba(0,0,0,0.55);color:#FFF;padding:4px 12px;border-radius:4px;font-size:0.72rem;
}

/* ── Product Detail ────────────────────────────────── */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.detail-gallery{}
.detail-main-img{
  aspect-ratio:4/3;background:linear-gradient(135deg,#E5E7EB,#D1D5DB);
  border-radius:12px;display:flex;align-items:center;justify-content:center;
  overflow:hidden;position:relative;
}
.detail-main-img img{width:100%;height:100%;object-fit:cover}
.detail-specs{display:flex;flex-direction:column;gap:0;border:1px solid #E5E7EB;border-radius:10px;overflow:hidden}
.spec-row{display:flex;padding:12px 16px;border-bottom:1px solid #E5E7EB;font-size:0.9rem}
.spec-row:last-child{border-bottom:none}
.spec-key{flex:1;font-weight:600;color:#4A5568;text-transform:capitalize}
.spec-val{flex:1;color:#1A1D20}

/* ── Certificate Grid ──────────────────────────────── */
.certs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.cert-card{
  background:#FFF;border-radius:12px;overflow:hidden;border:1px solid #E5E7EB;
  cursor:pointer;transition:all 0.3s;
}
.cert-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.1)}
.cert-img{
  aspect-ratio:3/4;background:#FFF;
  display:flex;align-items:center;justify-content:center;overflow:hidden;
}
.cert-img img{width:100%;height:100%;object-fit:contain;display:block}
.cert-body{padding:20px}
.cert-body h3{font-size:1.05rem;margin-bottom:6px}
.cert-body p{font-size:0.85rem;color:#4A5568}

/* ── Lightbox ──────────────────────────────────────── */
.lightbox{
  display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,0.9);
  align-items:center;justify-content:center;flex-direction:column;
}
.lightbox-img{max-width:90vw;max-height:75vh;object-fit:contain;border-radius:8px}
.lightbox-caption{color:rgba(255,255,255,0.7);margin-top:16px;font-size:0.95rem}
.lightbox-close{
  position:absolute;top:20px;right:30px;color:#FFF;font-size:2.5rem;cursor:pointer;
  opacity:0.7;transition:opacity 0.2s;
}
.lightbox-close:hover{opacity:1}

/* ── News Modal ────────────────────────────────────── */
.news-modal-overlay{
  display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,0.6);
  align-items:center;justify-content:center;padding:24px;
}
.news-modal{
  background:#FFF;border-radius:16px;padding:40px;width:100%;max-width:800px;
  max-height:85vh;overflow-y:auto;position:relative;box-shadow:0 20px 60px rgba(0,0,0,0.2);
}
.news-modal-close{
  position:sticky;top:0;float:right;background:none;border:none;font-size:2rem;
  cursor:pointer;color:#9CA3AF;z-index:1;
}
.news-modal-close:hover{color:#1A1D20}
.news-modal-content h2{font-size:1.5rem;margin-bottom:8px}
.news-article{font-size:0.95rem;line-height:1.9;color:#4A5568}
.news-article p{margin-bottom:1rem}
.news-article h1,.news-article h2,.news-article h3{color:#1A1D20;margin:1.5rem 0 0.75rem}
.news-article img{max-width:100%;border-radius:8px;margin:1rem 0}

/* ── Responsive ───────────────────────────────────── */
@media(max-width:900px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;
    background:#FFF;flex-direction:column;padding:20px;gap:16px;
    border-bottom:2px solid #E5E7EB;box-shadow:0 10px 30px rgba(0,0,0,0.08);
  }
  .nav-links.open{display:flex}
  .mobile-toggle{display:block}
  .company-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .hero{min-height:70vh}
  .company-stats{grid-template-columns:repeat(3,1fr);gap:12px}
  .app-grid{grid-template-columns:1fr}
  .cert-bar{gap:20px}
  .detail-grid{grid-template-columns:1fr;gap:32px}
  .detail-gallery{position:static}
}
@media(max-width:600px){
  .hero-btns{flex-direction:column}
  .hero-btns .btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .company-stats{grid-template-columns:1fr 1fr}
  .section{padding:50px 0}
  .product-grid{grid-template-columns:1fr}
  .certs-grid{grid-template-columns:1fr}
  .news-modal{padding:24px;max-width:95vw}
}