/* ============================================================
   INTERIOR DESIGN — Dark Luxury Theme
   ============================================================ */

/* --- Google Fonts --- */

/* --- Design Tokens --- */
:root {
  --bg: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --bg-card-hover: #222222;
  --gold: #c9a96e;
  --gold-light: #e8c97e;
  --gold-dark: #a8884d;
  --text: #f5f0e8;
  --text-muted: rgba(245,240,232,0.55);
  --text-dark: #1a1a1a;
  --border: rgba(201,169,110,0.15);
  --border-strong: rgba(201,169,110,0.35);
  --success: #4caf50;
  --danger: #e94560;
  --overlay: rgba(10,10,10,0.65);
  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Be Vietnam Pro', system-ui, sans-serif;
  --radius: 8px;
  --radius-lg: 16px;
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
  --max-width: 1280px;
  --header-h: 80px;
  --topbar-h: 40px;
}

/* --- Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);line-height:1.7;font-size:15px;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--gold);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--gold-light)}
::selection{background:var(--gold);color:var(--text-dark)}

/* --- Typography --- */
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.2;color:var(--text)}
h1{font-size:clamp(2.2rem,5vw,3.8rem);letter-spacing:-0.02em}
h2{font-size:clamp(1.8rem,3.5vw,2.8rem)}
h3{font-size:clamp(1.3rem,2.5vw,1.8rem)}
.section-label{font-family:var(--font-body);font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:3px;color:var(--gold);margin-bottom:12px;display:flex;align-items:center;gap:12px}
.section-label::before{content:'';width:40px;height:1px;background:var(--gold)}
.section-title{margin-bottom:16px}
.section-subtitle{color:var(--text-muted);font-size:1.05rem;max-width:600px;line-height:1.8}

/* --- Container --- */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section-dark{background:var(--bg-secondary)}

/* --- Buttons --- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border:none;border-radius:var(--radius);font-family:var(--font-body);font-size:0.9rem;font-weight:600;cursor:pointer;transition:all var(--transition);text-decoration:none;letter-spacing:0.5px}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:var(--text-dark)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(201,169,110,0.3);color:var(--text-dark)}
.btn-outline{background:transparent;border:1px solid var(--gold);color:var(--gold)}
.btn-outline:hover{background:var(--gold);color:var(--text-dark)}
.btn-sm{padding:10px 20px;font-size:0.8rem}
.btn-lg{padding:18px 42px;font-size:1rem}

/* --- Top Bar --- */
.top-bar{background:rgba(201,169,110,0.08);border-bottom:1px solid var(--border);transition:all 0.3s;overflow:hidden;max-height:40px;position:relative;z-index:1002}
.top-bar.hidden{max-height:0;border:none}
.top-bar-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;align-items:center;height:40px;font-size:0.78rem}
.top-bar-left{display:flex;align-items:center;gap:16px}
.top-bar-left a{color:var(--text-muted);transition:color 0.2s}
.top-bar-left a:hover{color:var(--gold)}
.top-bar-left i{color:var(--gold);margin-right:6px;font-size:0.7rem}
.top-bar-sep{color:var(--border-strong);font-size:0.6rem}
.top-bar-right{display:flex;align-items:center;gap:16px;color:var(--text-muted)}
.top-bar-social{display:flex;gap:12px;align-items:center}
.top-bar-social a{color:var(--text-muted);font-size:0.9rem;display:inline-flex;align-items:center;justify-content:center;min-width:48px;min-height:48px;margin:-4px 0;transition:color 0.2s}
.top-bar-social a:hover{color:var(--gold)}

/* --- Header / Nav --- */
.site-header{position:fixed;top:40px;left:0;right:0;height:var(--header-h);z-index:1000;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);background:rgba(10,10,10,0.97);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}
body.has-transparent-header .site-header{background:transparent !important;backdrop-filter:none !important;-webkit-backdrop-filter:none !important}
body.has-transparent-header .site-header.scrolled,
.site-header.scrolled{top:0 !important;background:rgba(10,10,10,0.97) !important;backdrop-filter:blur(24px) !important;-webkit-backdrop-filter:blur(24px) !important;border-bottom:1px solid var(--border);box-shadow:0 4px 30px rgba(0,0,0,0.3)}
.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 clamp(16px,3vw,32px);display:flex;align-items:center;justify-content:space-between;height:100%}
.site-logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.site-logo img{height:48px;width:auto}
.logo-text{display:flex;flex-direction:column}
.logo-name{font-family:var(--font-heading);font-size:1.5rem;font-weight:700;color:var(--text);letter-spacing:1px;line-height:1.1}
.logo-tagline{font-size:0.65rem;color:var(--text-muted);letter-spacing:2px;text-transform:uppercase}

/* Desktop Nav */
.main-nav{display:flex}
.nav-menu{display:flex;gap:0;list-style:none;align-items:center}
.nav-menu>li>a{color:var(--text);font-size:0.82rem;font-weight:500;letter-spacing:0.8px;text-transform:uppercase;padding:28px 16px;display:flex;align-items:center;gap:6px;position:relative;transition:color 0.2s}
.nav-menu>li>a::after{content:'';position:absolute;bottom:20px;left:16px;right:16px;height:1px;background:var(--gold);transform:scaleX(0);transition:transform 0.3s}
.nav-menu>li:hover>a::after,.nav-menu>li>a.active::after{transform:scaleX(1)}
.nav-menu>li:hover>a,.nav-menu>li>a.active{color:var(--gold)}
.nav-arrow{font-size:0.55rem;transition:transform 0.2s;opacity:0.5}
.has-dropdown:hover .nav-arrow{transform:rotate(180deg);opacity:1}

/* Mega Dropdown */
.mega-dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:600px;background:rgba(15,15,15,0.98);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;opacity:0;visibility:hidden;transition:all 0.3s;z-index:100;box-shadow:0 20px 60px rgba(0,0,0,0.5)}
.has-dropdown:hover>.mega-dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-inner{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px}
.mega-heading{display:flex;align-items:center;gap:10px;color:var(--text);font-size:0.88rem;font-weight:600;padding:8px 0;border-bottom:1px solid var(--border);margin-bottom:8px;transition:color 0.2s}
.mega-heading i{color:var(--gold);width:20px;text-align:center;font-size:0.9rem}
.mega-heading:hover{color:var(--gold)}
.mega-sub{list-style:none;padding:0}
.mega-sub li a{display:block;padding:6px 0 6px 30px;color:var(--text-muted);font-size:0.8rem;transition:all 0.2s;position:relative}
.mega-sub li a::before{content:'';position:absolute;left:12px;top:50%;width:8px;height:1px;background:var(--border);transition:all 0.2s}
.mega-sub li a:hover{color:var(--gold);padding-left:36px}
.mega-sub li a:hover::before{background:var(--gold);width:14px}

/* Simple Dropdown */
.simple-dropdown{position:absolute;top:100%;left:0;min-width:240px;background:rgba(15,15,15,0.98);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-md);padding:12px 0;opacity:0;visibility:hidden;transition:all 0.3s;z-index:100;box-shadow:0 10px 40px rgba(0,0,0,0.5);transform:translateY(8px);list-style:none}
.has-dropdown:hover>.simple-dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.simple-dropdown li{position:relative}
.simple-dropdown li a{display:flex;justify-content:space-between;align-items:center;padding:10px 24px;color:var(--text-muted);font-size:0.85rem;transition:all 0.2s}
.simple-dropdown li a:hover{color:var(--gold);background:rgba(255,255,255,0.02);padding-left:28px}
.simple-dropdown li a i.fa-chevron-right{font-size:0.55rem;opacity:0.5;transition:transform 0.2s}
.simple-dropdown li:hover>a i.fa-chevron-right{opacity:1}
/* Level 3 */
.simple-dropdown .simple-dropdown{top:-13px;left:100%;margin-left:0;transform:translateX(8px)}
.simple-dropdown .has-dropdown:hover>.simple-dropdown{transform:translateX(0)}

/* Header Actions */
.header-actions{display:flex;align-items:center;gap:16px}
.header-phone{display:none;width:40px;height:40px;border-radius:50%;border:1px solid var(--border);color:var(--gold);align-items:center;justify-content:center;font-size:0.9rem;transition:all 0.2s}
.header-phone:hover{background:var(--gold);color:var(--text-dark)}
.btn-header-cta{display:inline-flex;align-items:center;padding:10px 24px;background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:var(--text-dark);font-size:0.8rem;font-weight:600;border-radius:var(--radius);transition:all 0.3s;letter-spacing:0.5px}
.btn-header-cta:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(201,169,110,0.3);color:var(--text-dark)}

/* Hamburger */
.mobile-toggle{display:none;background:none;border:none;cursor:pointer;width:32px;height:24px;position:relative;padding:0}
.mobile-toggle span{display:block;position:absolute;height:2px;width:100%;background:var(--text);left:0;transition:all 0.3s}
.mobile-toggle span:nth-child(1){top:0}
.mobile-toggle span:nth-child(2){top:11px}
.mobile-toggle span:nth-child(3){top:22px}

/* Mobile Menu */
.mobile-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:1500;opacity:0;visibility:hidden;transition:all 0.3s}
.mobile-overlay.open{opacity:1;visibility:visible}
.mobile-menu{position:fixed;top:0;right:-320px;width:320px;height:100vh;background:var(--bg);z-index:1600;transition:right 0.4s cubic-bezier(0.4,0,0.2,1);display:flex;flex-direction:column;overflow-y:auto;border-left:1px solid var(--border)}
.mobile-menu.open{right:0}
.mobile-menu-header{display:flex;align-items:center;justify-content:space-between;padding:20px;border-bottom:1px solid var(--border)}
.mobile-close{background:none;border:none;color:var(--text-muted);font-size:1.3rem;cursor:pointer;width:40px;height:40px;display:flex;align-items:center;justify-content:center}
.mobile-close:hover{color:var(--gold)}
.mobile-nav{list-style:none;padding:12px 0;flex:1}
.mobile-nav>li{border-bottom:1px solid var(--border)}
.mobile-nav-row{display:flex;align-items:center;justify-content:space-between}
.mobile-nav-row>a{flex:1;padding:14px 20px;color:var(--text);font-size:0.9rem;font-weight:500}
.mobile-expand{background:none;border:none;border-left:1px solid var(--border);color:var(--gold);width:48px;height:48px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:0.8rem}
.mobile-sub{list-style:none;max-height:0;overflow:hidden;transition:max-height 0.4s;background:rgba(201,169,110,0.03)}
.has-sub.expanded>.mobile-sub{max-height:600px}
.mobile-sub li a{display:flex;align-items:center;gap:10px;padding:10px 20px 10px 32px;color:var(--text-muted);font-size:0.85rem;transition:color 0.2s}
.mobile-sub li a i{color:var(--gold);width:18px;text-align:center;font-size:0.8rem}
.mobile-sub li a:hover{color:var(--gold)}
.mobile-sub-2{list-style:none;padding-left:20px}
.mobile-sub-2 li a{padding:6px 20px 6px 42px;font-size:0.8rem}
.mobile-menu-footer{padding:20px;border-top:1px solid var(--border);margin-top:auto}

/* --- Hero --- */
.hero{position:relative;height:100vh;min-height:600px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img,.hero-bg video{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to right,rgba(10,10,10,0.85) 0%,rgba(10,10,10,0.4) 100%);z-index:1}
.section-hero-banner{display:flex;flex-direction:column;}
.hero-content{position:relative;z-index:2;width:100%;max-width:1280px;margin:0 auto;padding:0 clamp(16px,4vw,48px);}
.hero-align-center{text-align:center;display:flex;flex-direction:column;align-items:center;}
.hero-align-left{text-align:left;display:flex;flex-direction:column;align-items:flex-start;}
.hero-align-right{text-align:right;display:flex;flex-direction:column;align-items:flex-end;}

.hero-subtitle{color:var(--gold);font-size:clamp(0.9rem, 2vw, 1.1rem);text-transform:uppercase;letter-spacing:3px;margin-bottom:16px;font-weight:600;}
.hero-title{font-family:var(--font-heading);font-weight:700;color:#fff;margin-bottom:24px;line-height:1.2;font-size:clamp(2.5rem, 6vw, 4.5rem);}
.hero-title .gold{color:var(--gold);}
.hero-desc{color:rgba(255,255,255,0.85);font-size:clamp(1.05rem, 2vw, 1.25rem);margin-bottom:40px;line-height:1.8;max-width:800px;}

.hero-buttons{display:flex;gap:16px;flex-wrap:wrap;margin-top:24px;}
.hero-stats{position:absolute;bottom:0;left:0;right:0;z-index:2;background:rgba(10,10,10,0.8);backdrop-filter:blur(10px);border-top:1px solid var(--border)}
.hero-stats-inner{max-width:var(--max-width);margin:0 auto;padding:20px 24px;display:flex;justify-content:center;gap:60px}
.hero-stat{text-align:center}
.hero-stat-number{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--gold)}
.hero-stat-label{font-size:0.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-top:4px}

/* --- Cards --- */
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition)}
.card:hover{border-color:var(--border-strong);transform:translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,0.3)}
.card-img{position:relative;overflow:hidden;aspect-ratio:4/3}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.card:hover .card-img img{transform:scale(1.05)}
.card-img-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(10,10,10,0.7) 0%,transparent 50%);opacity:0;transition:opacity var(--transition)}
.card:hover .card-img-overlay{opacity:1}
.card-body{padding:20px;text-align:center}
.card-body h3{font-size:1.05rem;margin-bottom:6px}
.card-body p{color:var(--text-muted);font-size:0.85rem}
.card-tag{display:inline-block;padding:4px 12px;background:rgba(201,169,110,0.15);color:var(--gold);font-size:0.72rem;font-weight:600;border-radius:20px;text-transform:uppercase;letter-spacing:0.5px;margin-bottom:6px}

/* --- Project Grid --- */
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.project-filter{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:40px}
.project-filter button{padding:8px 20px;border:1px solid var(--border);border-radius:30px;background:transparent;color:var(--text-muted);font-family:var(--font-body);font-size:0.8rem;cursor:pointer;transition:all var(--transition)}
.project-filter button.active,.project-filter button:hover{background:var(--gold);color:var(--text-dark);border-color:var(--gold)}

/* --- Service Cards --- */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.service-card{text-align:center;padding:48px 32px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-card);transition:all var(--transition)}
.service-card:hover{border-color:var(--gold);transform:translateY(-6px)}
.service-card .icon{width:64px;height:64px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(201,169,110,0.1);color:var(--gold);font-size:1.5rem}
.service-card h3{margin-bottom:12px}
.service-card p{color:var(--text-muted);font-size:0.9rem}

/* --- Stats Counter --- */
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:60px 0}
.stat-item{text-align:center}
.stat-number{font-family:var(--font-heading);font-size:3rem;font-weight:700;color:var(--gold);display:block}
.stat-label{font-size:0.8rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1.5px;margin-top:8px}

/* --- Process Timeline --- */
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative}
.process-steps::before{content:'';position:absolute;top:40px;left:10%;right:10%;height:1px;background:var(--border)}
.process-step{text-align:center;position:relative}
.process-step-num{width:80px;height:80px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--bg-secondary);border:2px solid var(--gold);font-family:var(--font-heading);font-size:1.8rem;font-weight:700;color:var(--gold);position:relative;z-index:1}
.process-step h3{margin-bottom:8px;font-size:1.1rem}
.process-step p{color:var(--text-muted);font-size:0.85rem}

/* --- Testimonials --- */
.testimonial-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px;position:relative}
.testimonial-card::before{content:'\201C';position:absolute;top:16px;left:28px;font-family:var(--font-heading);font-size:4rem;color:var(--gold);opacity:0.3;line-height:1}
.testimonial-card p{font-size:1rem;line-height:1.8;font-style:italic;margin-bottom:20px;color:var(--text-muted)}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-author img{width:48px;height:48px;border-radius:50%;object-fit:cover;border:2px solid var(--gold)}
.testimonial-name{font-weight:600;font-size:0.95rem}
.testimonial-title{font-size:0.8rem;color:var(--text-muted)}
.testimonial-stars{color:var(--gold);font-size:0.85rem;margin-bottom:16px}

/* --- Gallery (Swiper + Lightbox) --- */
.gallery-swiper{position:relative;overflow:hidden;border-radius:var(--radius-lg);max-width:100%}
.gallery-swiper .swiper-button-next,.gallery-swiper .swiper-button-prev{color:var(--gold)}
.gallery-swiper .swiper-wrapper{display:flex}
.gallery-swiper .swiper-slide{flex-shrink:0;width:100%}
.gallery-swiper .swiper-slide img{width:100%;height:500px;object-fit:cover;cursor:pointer;display:block}
.gallery-thumbs{margin-top:12px;position:relative}
.gallery-thumbs .swiper-button-next,.gallery-thumbs .swiper-button-prev{opacity:0;transition:opacity 0.3s;transform:scale(0.55);margin-top:-18px;color:var(--gold)}
.gallery-thumbs:hover .swiper-button-next,.gallery-thumbs:hover .swiper-button-prev{opacity:1}
.gallery-thumbs .swiper-slide{opacity:0.5;cursor:pointer;border-radius:var(--radius);overflow:hidden;border:2px solid transparent}
.gallery-thumbs .swiper-slide-thumb-active{opacity:1;border-color:var(--gold)}
.gallery-thumbs .swiper-slide img{height:80px;object-fit:cover}
/* Lightbox — Fullscreen Swiper Gallery */
.lightbox{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,0.97);display:none;flex-direction:column;justify-content:center;align-items:center}
.lightbox.active{display:flex}
.lightbox-close{position:absolute;top:16px;right:20px;color:#fff;font-size:2rem;cursor:pointer;z-index:10010;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,0.1);border-radius:50%;transition:background 0.2s}
.lightbox-close:hover{background:rgba(201,169,110,0.4)}
.lightbox-counter{position:absolute;top:24px;left:24px;color:rgba(255,255,255,0.6);font-size:0.85rem;z-index:10010}
.lightbox-main{flex:1;width:100%;display:flex;align-items:center;justify-content:center;position:relative;min-height:0}
.lightbox-main .swiper{width:100%;height:100%}
.lightbox-main .swiper-slide{display:flex;align-items:center;justify-content:center}
.lightbox-main .swiper-slide img{max-width:92vw;max-height:calc(100vh - 140px);object-fit:contain;border-radius:var(--radius)}
.lightbox-main .swiper-button-next,.lightbox-main .swiper-button-prev{color:var(--gold)}
.lightbox-thumbs{width:100%;max-width:800px;padding:12px 0 16px;margin:0 auto}
.lightbox-thumbs .swiper-slide{opacity:0.4;cursor:pointer;border-radius:6px;overflow:hidden;border:2px solid transparent;transition:all 0.2s}
.lightbox-thumbs .swiper-slide-thumb-active{opacity:1;border-color:var(--gold)}
.lightbox-thumbs .swiper-slide img{width:100%;height:60px;object-fit:cover;display:block}
@media(max-width:768px){
  .lightbox-main .swiper-slide img{max-width:100vw;max-height:calc(100vh - 120px);border-radius:0}
  .lightbox-close{top:8px;right:12px;width:40px;height:40px;font-size:1.5rem}
  .lightbox-thumbs .swiper-slide img{height:48px}
  .gallery-swiper .swiper-slide img{height:300px!important}
  .gallery-thumbs .swiper-slide img{height:50px!important}
  .gallery-thumbs .swiper-button-next,.gallery-thumbs .swiper-button-prev{display:none!important}
}

/* --- Cost Estimator --- */
.estimator-wrap{max-width:800px;margin:0 auto}
.estimator-step{display:none}
.estimator-step.active{display:block}
.estimator-options{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.estimator-option{padding:24px 16px;border:2px solid var(--border);border-radius:var(--radius-lg);text-align:center;cursor:pointer;transition:all var(--transition)}
.estimator-option:hover,.estimator-option.selected{border-color:var(--gold);background:rgba(201,169,110,0.08)}
.estimator-option .icon{font-size:2rem;color:var(--gold);margin-bottom:12px}
.estimator-option h3{font-size:0.95rem;margin-bottom:4px}
.estimator-option p{font-size:0.78rem;color:var(--text-muted)}
.estimator-result{text-align:center;padding:48px;background:var(--bg-card);border:1px solid var(--gold);border-radius:var(--radius-lg)}
.estimator-result .price{font-family:var(--font-heading);font-size:2.5rem;font-weight:700;color:var(--gold)}
.estimator-progress{display:flex;gap:8px;justify-content:center;margin-bottom:40px}
.estimator-progress .dot{width:12px;height:12px;border-radius:50%;background:var(--border);transition:all var(--transition)}
.estimator-progress .dot.active{background:var(--gold);width:32px;border-radius:6px}

/* --- Footer --- */
.site-footer{background:var(--bg-secondary);border-top:1px solid var(--border);padding:80px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:48px}
.footer-brand p{color:var(--text-muted);font-size:0.9rem;margin-top:16px;line-height:1.8}
.footer-heading{font-family:var(--font-body);font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:2px;color:var(--gold);margin-bottom:20px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--text-muted);font-size:0.88rem;transition:color var(--transition)}
.footer-links a:hover{color:var(--gold)}
.footer-social{display:flex;gap:12px;margin-top:20px}
.footer-social a{width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid var(--border);color:var(--text-muted);font-size:1.1rem;transition:all var(--transition)}
.footer-social a:hover{border-color:var(--gold);color:var(--gold);background:rgba(201,169,110,0.1)}
.footer-bottom{margin-top:60px;padding:24px 0;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;font-size:0.8rem;color:var(--text-muted)}
.footer-contact-item{display:flex;align-items:center;gap:10px;margin-bottom:12px;color:var(--text-muted);font-size:0.88rem}
.footer-contact-item i{color:var(--gold);width:18px;text-align:center}

/* --- Breadcrumb --- */
.breadcrumb{padding:16px 0;font-size:0.8rem}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb .sep{color:var(--text-muted);opacity:0.4}
.breadcrumb .current{color:var(--gold)}

/* --- Forms --- */
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:0.82rem;font-weight:500;color:var(--text-muted);margin-bottom:8px}
.form-control{width:100%;padding:14px 18px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-family:var(--font-body);font-size:0.92rem;transition:border-color var(--transition)}
.form-control:focus{outline:none;border-color:var(--gold)}
textarea.form-control{min-height:120px;resize:vertical}

/* --- Scroll Animations --- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity 0.8s ease,transform 0.8s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-left{opacity:0;transform:translateX(-40px);transition:opacity 0.8s ease,transform 0.8s ease}
.reveal-left.visible{opacity:1;transform:translateX(0)}
.reveal-right{opacity:0;transform:translateX(40px);transition:opacity 0.8s ease,transform 0.8s ease}
.reveal-right.visible{opacity:1;transform:translateX(0)}

/* --- Page Builder Sections --- */
.pb-row{position:relative;background-size:cover;background-position:center}
.pb-row-overlay{position:absolute;inset:0;pointer-events:none}
.pb-row-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;gap:24px;flex-wrap:wrap}
.pb-col{min-width:0}
.pb-col-1{flex:0 0 100%}
.pb-col-1-2{flex:0 0 calc(50% - 12px)}
.pb-col-1-3{flex:0 0 calc(33.333% - 16px)}
.pb-col-2-3{flex:0 0 calc(66.666% - 8px)}
.pb-col-1-4{flex:0 0 calc(25% - 18px)}
.pb-col-3-4{flex:0 0 calc(75% - 6px)}

/* Feature Grid (like CTP Home image) */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{text-align:center;padding:36px 24px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-card);transition:all var(--transition)}
.feature-card:hover{border-color:var(--gold)}
.feature-card .num{font-family:var(--font-heading);font-size:2.5rem;font-weight:700;color:var(--gold);margin-bottom:8px}
.feature-card .icon{font-size:2rem;color:var(--gold);margin-bottom:16px}
.feature-card h4{font-size:1rem;margin-bottom:10px}
.feature-card p{color:var(--text-muted);font-size:0.83rem;line-height:1.7}

/* Photo Strip */
.photo-strip{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;scroll-snap-type:x mandatory}
.photo-strip::-webkit-scrollbar{display:none}
.photo-strip img{height:220px;flex-shrink:0;object-fit:cover;border-radius:var(--radius);scroll-snap-align:start}
.photo-strip-caption{display:flex;justify-content:center;gap:40px;padding:20px;background:var(--bg-card);border:1px solid var(--border);margin-top:8px;border-radius:var(--radius)}
.photo-strip-caption .item{display:flex;align-items:center;gap:10px;font-size:0.82rem;color:var(--text-muted)}
.photo-strip-caption .item i{color:var(--gold)}

/* Before/After Compare */
.compare-slider{position:relative;overflow:hidden;border-radius:var(--radius-lg);cursor:ew-resize}
.compare-slider img{width:100%;display:block}
.compare-after{position:absolute;inset:0;overflow:hidden;width:50%}
.compare-handle{position:absolute;top:0;bottom:0;width:4px;background:var(--gold);left:50%;transform:translateX(-50%);z-index:2;cursor:ew-resize}
.compare-handle::after{content:'⇔';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:40px;height:40px;background:var(--gold);color:var(--text-dark);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1rem}

/* FAQ Accordion */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border)}
.faq-question{display:flex;justify-content:space-between;align-items:center;padding:20px 0;cursor:pointer;font-weight:600;font-size:1rem;color:var(--text);transition:color var(--transition)}
.faq-question:hover{color:var(--gold)}
.faq-question i{color:var(--gold);transition:transform var(--transition)}
.faq-item.open .faq-question i{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease}
.faq-item.open .faq-answer{max-height:500px}
.faq-answer p{padding:0 0 20px;color:var(--text-muted);line-height:1.8;font-size:0.92rem}

/* CTA Banner */
.cta-banner{position:relative;padding:80px 0;text-align:center;background-size:cover;background-position:center;border-radius:var(--radius-lg);overflow:hidden}
.cta-banner::before{content:'';position:absolute;inset:0;background:rgba(10,10,10,0.8)}
.cta-banner-content{position:relative;z-index:1}
.cta-banner h2{margin-bottom:16px}
.cta-banner p{color:var(--text-muted);margin-bottom:32px;font-size:1.05rem}

/* --- Responsive --- */
@media(max-width:1024px){
  .project-grid,.service-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}
  .stats-bar,.process-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .hero-stats-inner{gap:32px}
  .pb-col-1-2,.pb-col-1-3,.pb-col-2-3,.pb-col-1-4,.pb-col-3-4{flex:0 0 100%}
  .mega-dropdown{min-width:480px}
}
@media(max-width:768px){
  :root{--header-h:64px;--topbar-h:0px}
  .section{padding:60px 0}
  .top-bar{display:none}
  .site-header{top:0 !important}
  .main-nav{display:none}
  .btn-header-cta{display:none}
  .header-phone{display:flex}
  .mobile-toggle{display:block}
  .hero{min-height:700px; height:auto; padding:120px 0 240px; align-items:flex-start}
  .hero-content{margin-top:0}
  .hero-stats-inner{flex-wrap:wrap;gap:16px}
  .hero-stat{flex:1 0 40%}
  .project-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-left:-12px;margin-right:-12px}
  .project-grid .card{border-radius:var(--radius)}
  .project-grid .card-body{padding:12px 8px;text-align:center}
  .project-grid .card-body h3{font-size:0.85rem;margin-bottom:4px}
  .project-grid .card-body p{font-size:0.75rem}
  .project-grid .card-tag{font-size:0.65rem;padding:2px 8px;margin-bottom:4px}
  .service-grid,.feature-grid,.estimator-options{grid-template-columns:1fr}
  .stats-bar,.process-steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-buttons{flex-direction:column}
  .gallery-swiper .swiper-slide img{height:300px}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center}
  [style*="grid-template-columns:2fr 1fr"],
  [style*="grid-template-columns:1fr 340px"]{grid-template-columns:1fr!important}
  .breadcrumb{padding:32px 0 16px}
}

/* ===== SECTION INTERIOR (si-*) ===== */

/* Global container override — content stays centered, backgrounds stay full-width */
.page-sections .container,
.section-interior .container {
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
}
.page-sections > section { width: 100%; }

/* Hero content container */
.section-hero-banner .hero-content {
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
}
.si-title{font-family:var(--font-heading);font-size:clamp(1.8rem,4vw,2.6rem);font-weight:700;text-align:center;margin:0 0 12px;color:var(--text);}
.si-subtitle{text-align:center;color:var(--text-muted);font-size:1rem;margin:0 0 48px;max-width:600px;margin-left:auto;margin-right:auto;}
.si-grid{display:grid;gap:24px;}

/* Cards */
.si-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;transition:all var(--transition);}
.si-card:hover{border-color:var(--border-strong);transform:translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,.3);}
.si-card h3,.si-card h4{font-family:var(--font-heading);color:var(--text);margin:12px 0 8px;font-size:1.05rem;}
.si-card p{color:var(--text-muted);font-size:.85rem;line-height:1.6;margin:0;}
.si-icon{font-size:2rem;color:var(--gold);}
.si-number{display:inline-block;font-family:var(--font-heading);font-size:1.5rem;font-weight:700;color:var(--gold);margin-bottom:8px;}

/* Stats */
.si-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center;}
.si-stat-number{display:block;font-family:var(--font-heading);font-size:clamp(2rem,5vw,3.5rem);font-weight:700;color:var(--gold);line-height:1;}
.si-stat-label{display:block;color:var(--text-muted);font-size:.9rem;margin-top:8px;}

/* Timeline / Process */
.si-timeline{display:flex;flex-direction:column;gap:0;position:relative;padding-left:60px;}
.si-timeline::before{content:'';position:absolute;left:28px;top:0;bottom:0;width:2px;background:var(--border);}
.si-timeline-item{display:flex;align-items:flex-start;gap:24px;padding:24px 0;position:relative;}
.si-timeline-number{width:56px;height:56px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:var(--bg-card);border:2px solid var(--gold);border-radius:50%;font-family:var(--font-heading);font-size:1.2rem;font-weight:700;color:var(--gold);position:absolute;left:-60px;z-index:1;}
.si-timeline-content h3{font-family:var(--font-heading);color:var(--text);margin:0 0 6px;font-size:1.15rem;}
.si-timeline-content p{color:var(--text-muted);margin:0;font-size:.9rem;}

/* Pricing */
.si-pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.si-pricing-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 28px;text-align:center;transition:all var(--transition);}
.si-pricing-card:hover{transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,.3);}
.si-pricing-highlight{border-color:var(--gold);position:relative;}
.si-pricing-highlight::before{content:'Phổ biến';position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--gold);color:var(--text-dark);padding:4px 20px;border-radius:20px;font-size:.72rem;font-weight:700;text-transform:uppercase;}
.si-pricing-name{font-family:var(--font-heading);font-size:1.3rem;color:var(--text);margin:0 0 16px;}
.si-pricing-price{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--gold);margin:0 0 24px;}
.si-pricing-features{list-style:none;padding:0;margin:0 0 28px;text-align:left;}
.si-pricing-features li{padding:10px 0;border-bottom:1px solid var(--border);color:var(--text-muted);font-size:.88rem;}
.si-pricing-features li i{color:var(--gold);margin-right:10px;width:16px;}
.si-pricing-btn{width:100%;}

/* FAQ Accordion */
.si-accordion{display:flex;flex-direction:column;gap:12px;}
.si-accordion-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;}
.si-accordion-btn{width:100%;display:flex;justify-content:space-between;align-items:center;padding:18px 20px;background:none;border:none;color:var(--text);font-size:.95rem;font-weight:500;cursor:pointer;text-align:left;gap:16px;}
.si-accordion-btn i{color:var(--gold);transition:transform .3s;flex-shrink:0;}
.si-accordion-item.active .si-accordion-btn i{transform:rotate(180deg);}
.si-accordion-body{max-height:0;overflow:hidden;transition:max-height .4s ease;}
.si-accordion-item.active .si-accordion-body{max-height:500px;}
.si-accordion-body p{padding:0 20px 18px;margin:0;color:var(--text-muted);font-size:.9rem;line-height:1.7;}

/* Project Cards */
.si-project-card{display:block;text-decoration:none;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition);}
.si-project-card:hover{border-color:var(--border-strong);transform:translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,.3);}
.si-project-img{aspect-ratio:16/10;overflow:hidden;}
.si-project-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s;}
.si-project-card:hover .si-project-img img{transform:scale(1.05);}
.si-project-info{padding:20px;}
.si-project-info h3{font-family:var(--font-heading);font-size:1.05rem;color:var(--text);margin:0;}

/* Estimator Form */
.si-estimator-form{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;}
.si-form-row{margin-bottom:16px;}
.si-form-row label{display:block;margin-bottom:6px;color:var(--text);font-size:.9rem;font-weight:500;}

/* Responsive */
@media(max-width:768px){
  .si-grid { grid-template-columns: repeat(var(--cols-mobile, 1), 1fr) !important; }
  .si-stats-grid{grid-template-columns:repeat(2,1fr);}
  .si-pricing-grid{grid-template-columns:1fr;}
  .si-timeline{padding-left:50px;}
  .si-timeline-number{width:44px;height:44px;font-size:1rem;left:-50px;}
}

/* ===== CONTACT FORM SECTION ===== */
.section-contact-form{padding:80px 0;background:var(--bg-secondary)}
.cf-wrapper{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start}
.cf-compact{grid-template-columns:1fr}
.cf-info{padding:32px 0}
.cf-benefits{list-style:none;margin:24px 0;display:flex;flex-direction:column;gap:12px}
.cf-benefits li{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:0.88rem}
.cf-benefits i{color:var(--gold);font-size:0.85rem}
.cf-hotline{display:flex;align-items:center;gap:16px;margin-top:32px;padding:20px;background:rgba(201,169,110,0.08);border:1px solid var(--border);border-radius:var(--radius-lg)}
.cf-hotline>i{font-size:2rem;color:var(--gold)}
.cf-hotline span{font-size:0.8rem;color:var(--text-muted);display:block}
.cf-hotline strong{font-size:1.2rem;color:var(--gold)}
.cf-form-wrap{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px}
.cf-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.cf-field{display:flex;flex-direction:column;gap:6px}
.cf-field.full{grid-column:span 2;margin-bottom:16px}
.cf-field label{font-size:0.8rem;color:var(--text-muted);display:flex;align-items:center;gap:6px}
.cf-field label i{color:var(--gold);font-size:0.75rem}
.cf-field input,.cf-field select,.cf-field textarea{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;color:var(--text);font-size:0.88rem;transition:border-color 0.2s;font-family:inherit}
.cf-field input:focus,.cf-field select:focus,.cf-field textarea:focus{outline:none;border-color:var(--gold)}
.cf-submit{width:100%;justify-content:center;margin-top:8px}
.cf-result{padding:16px;border-radius:var(--radius);margin-top:16px;font-size:0.88rem;display:flex;align-items:center;gap:8px}
.cf-success{background:rgba(34,197,94,0.1);color:#22c55e;border:1px solid rgba(34,197,94,0.2)}
.cf-error{background:rgba(239,68,68,0.1);color:#ef4444;border:1px solid rgba(239,68,68,0.2)}

/* ===== COST ESTIMATOR COMPACT ===== */
.section-estimator{padding:80px 0}
.est-compact{max-width:900px;margin:0 auto;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-card)}
.est-inputs{display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:0;align-items:end}
.est-field{padding:20px;border-right:1px solid var(--border)}
.est-field label{display:block;font-size:0.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
.est-field select,.est-field input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;color:var(--text);font-size:0.88rem;font-family:inherit}
.est-field select:focus,.est-field input:focus{outline:none;border-color:var(--gold)}
.est-btn{border-radius:0;height:100%;padding:20px 28px;border:none;white-space:nowrap}
.est-result{border-top:1px solid var(--border);padding:32px;text-align:center;background:rgba(201,169,110,0.03)}
.est-result-inner{max-width:500px;margin:0 auto}
.est-label{font-size:0.75rem;text-transform:uppercase;letter-spacing:2px;color:var(--text-muted);margin-bottom:8px}
.est-price{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--gold);margin-bottom:12px}
.est-detail{color:var(--text-muted);font-size:0.88rem;line-height:1.8;margin-bottom:16px}
.est-note{font-size:0.78rem;color:var(--text-muted);margin-bottom:16px;opacity:0.7}

/* ===== WHY CHOOSE US ===== */
.section-why-us{padding:80px 0}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.why-card{text-align:center;padding:32px 20px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-card);transition:all 0.3s}
.why-card:hover{border-color:var(--gold);transform:translateY(-4px)}
.why-icon{width:64px;height:64px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(201,169,110,0.1);color:var(--gold);font-size:1.5rem}
.why-card h4{font-size:0.95rem;margin-bottom:8px}
.why-card p{color:var(--text-muted);font-size:0.82rem;line-height:1.6}
.why-highlight{margin-top:12px;padding:6px 14px;background:rgba(201,169,110,0.08);color:var(--gold);border-radius:20px;font-size:0.75rem;font-weight:600;display:inline-block}

@media(max-width:768px){
  .cf-wrapper{grid-template-columns:1fr}
  .cf-row{grid-template-columns:1fr}
  .cf-field.full{grid-column:span 1}
  .est-inputs{grid-template-columns:1fr}
  .est-field{border-right:none;border-bottom:1px solid var(--border)}
  .est-btn{border-radius:0 0 var(--radius-lg) var(--radius-lg)}
  .why-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .why-grid{grid-template-columns:1fr}
}