/* ═══════════════════════════════════════════
   ZKSK — Premium Construction Website Template
   Premium Construction Website
   ═══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;600;700;900&family=Inter:wght@300;400;500;600&display=swap');

@property --border-angle {
  syntax: "<angle>";
  inherits: true;
  initial-value: 0turn;
}

:root {
  --navy: #1a2332;
  --navy-light: #243044;
  --gold: #c9a84c;
  --gold-dark: #a8872e;
  --gold-light: #e0c56a;
  --bg: #0a0c10;
  --card-bg: rgba(0,0,0,0.50);
  --text: #ffffff;
  --text-dim: #ffffff;
  --radius: 14px;
  --shadow-d: 0 4px 20px rgba(0,0,0,.5);
  --shadow-l: 0 2px 12px rgba(201,168,76,.08);
  --font-h: 'Montserrat', sans-serif;
  --font-b: 'Inter', sans-serif;
  --ts: 3px 3px 8px rgba(0,0,0,1),-3px -3px 8px rgba(0,0,0,1),0 4px 16px rgba(0,0,0,1),0 0 20px rgba(0,0,0,0.8);
}

@keyframes border-spin {
  to { --border-angle: 1turn; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(201,168,76,.15); }
  50%      { box-shadow: 0 0 40px rgba(201,168,76,.3); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-b);color:var(--text);background:var(--bg);overflow-x:hidden;line-height:1.6;-webkit-font-smoothing:antialiased;text-shadow:var(--ts)}
::selection{background:var(--gold);color:#000}

/* PRELOADER */
.preloader{position:fixed;inset:0;z-index:9999;background:var(--bg);display:flex;align-items:center;justify-content:center;transition:opacity .6s,visibility 0s .6s}
.preloader.hidden{opacity:0;visibility:hidden}
.preloader-logo{width:160px;height:160px;animation:pulse-glow 2s ease-in-out infinite,float 3s ease-in-out infinite}

/* CANVAS */
#scrollCanvas{position:fixed;inset:0;width:100%;height:100%;z-index:0;display:block;background:var(--bg)}

/* HEADER */
.site-header{position:fixed;top:max(14px,env(safe-area-inset-top));left:50%;transform:translateX(-50%);width:calc(100% - 48px);max-width:1200px;z-index:1000;background:rgba(10,12,16,0.80);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(201,168,76,0.15);border-radius:var(--radius);transition:transform .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;white-space:nowrap}
.logo-img{width:auto;height:36px;object-fit:contain}
.logo-text{font-family:var(--font-h);font-size:26px;color:#fff;letter-spacing:2px;font-weight:700;text-transform:uppercase}
.desktop-nav{display:flex;gap:20px}
.nav-link{color:#ffffff !important;text-decoration:none;font-size:12px;font-weight:600;transition:color .3s;white-space:nowrap;letter-spacing:.5px;cursor:pointer}
.nav-link:hover,.nav-link.active{color:var(--gold) !important}
.header-cta{background:var(--gold);color:#000 !important;padding:9px 20px;border-radius:8px;font-weight:700;font-size:13px;text-decoration:none;white-space:nowrap;transition:transform .2s,background .3s;box-shadow:var(--shadow-d);font-family:var(--font-h);text-shadow:none !important;border:none;position:relative;isolation:isolate}
.header-cta::before{content:"";position:absolute;inset:-2px;border-radius:10px;padding:2px;background:conic-gradient(from var(--border-angle),#F6F8FE,#F9F64B,#EB4964,#54667E,#6884C0,#DAFAFF,#F9F9FD,#EDB675,#571E1B,#20191B,#3A3E57,#898FA2,#F6F8FE);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;animation:border-spin 3s linear infinite;z-index:-1;pointer-events:none}
.header-cta:hover{background:var(--gold-dark);transform:translateY(-1px)}
.burger{display:none;background:none;border:none;cursor:pointer;padding:4px}
.burger span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:transform .3s,opacity .3s}
.burger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.mobile-nav{display:none;flex-direction:column;padding:0 24px 16px;gap:12px}
.mobile-nav .nav-link{font-size:15px;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.07)}

/* UI LAYER */
#ui-layer{position:relative;z-index:10}
.page{position:relative;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:90px 24px 30px;background:transparent;scroll-snap-align:start}
.page .page-inner{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.page.is-active .page-inner{opacity:1;transform:translateY(0)}
.page-inner{width:100%;max-width:1100px;margin:0 auto}

/* TITLES */
.section-label{display:inline-block;padding:6px 18px;border:none;border-radius:30px;font-size:11px;letter-spacing:3px;color:#c9a84c !important;margin-bottom:14px;font-family:var(--font-h);font-weight:600;text-transform:uppercase;background:rgba(0,0,0,0.50);position:relative;isolation:isolate;text-shadow:var(--ts)}
.section-label::before{content:"";position:absolute;inset:-1px;border-radius:31px;padding:1px;background:conic-gradient(from var(--border-angle),#F6F8FE,#F9F64B,#EB4964,#54667E,#6884C0,#DAFAFF,#F9F9FD,#EDB675,#571E1B,#20191B,#3A3E57,#898FA2,#F6F8FE);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;animation:border-spin 3s linear infinite;z-index:-1;pointer-events:none}
.section-title{font-family:var(--font-h);font-size:clamp(28px,5vw,48px);text-align:center;color:#fff;letter-spacing:1px;margin-bottom:8px;font-weight:900;text-shadow:var(--ts)}
.section-sub{text-align:center;color:#ffffff;font-size:clamp(13px,1.8vw,16px);margin-bottom:24px;max-width:700px;margin-left:auto;margin-right:auto;text-shadow:var(--ts)}

/* HERO */
.hero-content{text-align:center}
.hero-logo{width:20%;max-width:210px;height:auto;margin-bottom:20px;filter:drop-shadow(0 4px 20px rgba(201,168,76,.3));animation:float 4s ease-in-out infinite}
.hero-title{margin-bottom:12px;line-height:1.1}
.hero-line1{font-family:var(--font-h);font-size:clamp(22px,4vw,42px);color:var(--gold);display:block;letter-spacing:4px;font-weight:900;text-shadow:var(--ts);text-transform:uppercase}
.hero-line2{font-family:var(--font-h);font-size:clamp(14px,2.5vw,24px);color:#fff;display:block;letter-spacing:6px;font-weight:300;margin-top:6px;text-shadow:var(--ts);text-transform:uppercase}
.hero-sub{font-size:clamp(13px,1.6vw,16px);color:#ffffff;max-width:620px;margin:0 auto 24px;line-height:1.65;text-shadow:var(--ts)}
.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}

/* BUTTONS */
.btn{padding:14px 32px;border-radius:10px;font-weight:700;font-size:14px;text-decoration:none;cursor:pointer;transition:transform .2s,box-shadow .2s;font-family:var(--font-h);letter-spacing:.5px;border:none;position:relative;isolation:isolate;text-shadow:var(--ts)}
.btn::before{content:"";position:absolute;inset:-2px;border-radius:12px;padding:2px;background:conic-gradient(from var(--border-angle),#F6F8FE,#F9F64B,#EB4964,#54667E,#6884C0,#DAFAFF,#F9F9FD,#EDB675,#571E1B,#20191B,#3A3E57,#898FA2,#F6F8FE);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;animation:border-spin 3s linear infinite;z-index:-1;pointer-events:none}
.btn-primary{background:var(--gold);color:#000 !important;box-shadow:var(--shadow-d);text-shadow:none !important}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(201,168,76,.4)}
.btn-outline{background:rgba(10,12,16,0.60);color:#fff !important;box-shadow:var(--shadow-l)}
.btn-outline:hover{background:rgba(201,168,76,.12);transform:translateY(-2px)}

/* STATS */
.hero-stats{display:flex;gap:28px;justify-content:center;flex-wrap:wrap}
.stat{text-align:center;min-width:100px}
.stat-num{font-family:var(--font-h);font-size:clamp(28px,4vw,42px);display:block;font-weight:900;color:var(--gold);text-shadow:var(--ts)}
.stat-label{font-size:11px;color:#ffffff;text-transform:uppercase;letter-spacing:1px;text-shadow:var(--ts)}

/* CARDS */
.card{background:var(--card-bg);border:none;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-l);transition:transform .3s,box-shadow .3s;position:relative;isolation:isolate}
.card::before{content:"";position:absolute;inset:-1px;border-radius:15px;padding:1px;background:conic-gradient(from var(--border-angle),#F6F8FE,#F9F64B,#EB4964,#54667E,#6884C0,#DAFAFF,#F9F9FD,#EDB675,#571E1B,#20191B,#3A3E57,#898FA2,#F6F8FE);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;animation:border-spin 3s linear infinite;z-index:-1;pointer-events:none}
.card:hover{transform:translateY(-4px);box-shadow:0 8px 28px rgba(201,168,76,.15)}
.card-icon{font-size:32px;margin-bottom:10px}
.card h3{font-family:var(--font-h);font-size:clamp(16px,2vw,20px);color:#fff;margin-bottom:6px;font-weight:700;text-shadow:var(--ts)}
.card p{font-size:13px;color:#ffffff;line-height:1.6;text-shadow:var(--ts)}

/* ABOUT */
.about-layout{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.about-lead{font-size:clamp(15px,1.8vw,18px);color:#ffffff;line-height:1.7;margin-bottom:12px;font-weight:400;text-shadow:var(--ts)}
.about-text{font-size:14px;color:#ffffff;line-height:1.6;text-shadow:var(--ts)}
.about-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.about-cards .card{padding:16px}

/* DIRECTIONS */
.directions-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.direction-card{min-height:180px;display:flex;flex-direction:column}
.direction-card .card-icon{font-size:36px}

/* ADVANTAGES */
.advantages-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.advantage-num{font-family:var(--font-h);font-size:36px;color:#c9a84c;font-weight:900;margin-bottom:4px;opacity:1}

/* GEOGRAPHY */
.geo-layout{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:center}
.geo-text{font-size:15px;color:#ffffff;line-height:1.7;margin-bottom:16px;text-shadow:var(--ts)}
.geo-regions{display:flex;flex-wrap:wrap;gap:8px}
.geo-tag{padding:8px 18px;border:none;border-radius:24px;font-size:12px;color:#fff;font-weight:600;background:rgba(0,0,0,0.50);position:relative;isolation:isolate;font-family:var(--font-h);letter-spacing:1px;text-shadow:var(--ts)}
.geo-tag::before{content:"";position:absolute;inset:-1px;border-radius:25px;padding:1px;background:conic-gradient(from var(--border-angle),#F6F8FE,#F9F64B,#EB4964,#54667E,#6884C0,#DAFAFF,#F9F9FD,#EDB675,#571E1B,#20191B,#3A3E57,#898FA2,#F6F8FE);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;animation:border-spin 3s linear infinite;z-index:-1;pointer-events:none}
.geo-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:16px}
.geo-stat-card{text-align:center;padding:16px}
.geo-stat-num{font-family:var(--font-h);font-size:28px;font-weight:900;color:var(--gold);text-shadow:var(--ts)}
.geo-stat-label{font-size:12px;color:#ffffff;margin-top:4px;text-shadow:var(--ts)}

/* 3D CAROUSEL */
.gallery-page .page-inner{max-width:1200px;padding:0 24px}
.carousel-container{width:100%;height:clamp(300px,50vw,450px);position:relative;perspective:1000px;overflow:hidden}
.carousel-track{width:100%;height:100%;display:flex;justify-content:center;align-items:center;position:relative;transform-style:preserve-3d}
.carousel-card{position:absolute;width:clamp(220px,30vw,320px);height:clamp(260px,45vw,420px);border-radius:16px;overflow:hidden;box-shadow:0 20px 40px rgba(0,0,0,0.4);transition:all 0.8s cubic-bezier(0.25,0.46,0.45,0.94);cursor:pointer;border:1px solid rgba(201,168,76,0.15)}
.carousel-card img{width:100%;height:100%;object-fit:cover;transition:all 0.8s cubic-bezier(0.25,0.46,0.45,0.94)}
.carousel-card.center{z-index:10;transform:scale(1.1) translateZ(0)}
.carousel-card.center img{filter:none}
.carousel-card.left-1{z-index:5;transform:translateX(clamp(-180px,-22vw,-240px)) scale(0.9) translateZ(-100px);opacity:0.9}
.carousel-card.left-1 img{filter:grayscale(80%) brightness(0.7)}
.carousel-card.left-2{z-index:1;transform:translateX(clamp(-320px,-42vw,-450px)) scale(0.75) translateZ(-300px);opacity:0.6}
.carousel-card.left-2 img{filter:grayscale(100%) brightness(0.5)}
.carousel-card.right-1{z-index:5;transform:translateX(clamp(180px,22vw,240px)) scale(0.9) translateZ(-100px);opacity:0.9}
.carousel-card.right-1 img{filter:grayscale(80%) brightness(0.7)}
.carousel-card.right-2{z-index:1;transform:translateX(clamp(320px,42vw,450px)) scale(0.75) translateZ(-300px);opacity:0.6}
.carousel-card.right-2 img{filter:grayscale(100%) brightness(0.5)}
.carousel-card.c-hidden{opacity:0;pointer-events:none;transform:scale(0.5) translateZ(-500px)}
.carousel-arrow{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,0.5);backdrop-filter:blur(8px);color:#fff;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:20;transition:all 0.3s;font-size:1.8rem;border:1px solid rgba(201,168,76,0.2);text-shadow:none;padding-bottom:3px}
.carousel-arrow:hover{background:rgba(201,168,76,0.3);transform:translateY(-50%) scale(1.1)}
.carousel-arrow-left{left:8px}
.carousel-arrow-right{right:8px}
.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:20px}
.carousel-dots .c-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,0.2);cursor:pointer;transition:all 0.3s;border:none;padding:0}
.carousel-dots .c-dot.active{background:var(--gold);transform:scale(1.3)}
.carousel-dots .c-dot.c-hidden{display:none}

/* LIGHTBOX */
.lightbox{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,0.92);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s;backdrop-filter:blur(10px)}
.lightbox.active{opacity:1;pointer-events:auto}
.lightbox-img{max-width:95vw;max-height:90vh;object-fit:contain;border-radius:8px;cursor:zoom-in;transition:transform .3s ease;transform-origin:center center;touch-action:none}
.lightbox-img.zoomed{cursor:zoom-out;max-width:none;max-height:none}
.lightbox-close{position:absolute;top:20px;right:24px;width:44px;height:44px;border-radius:50%;border:none;background:rgba(255,255,255,0.1);color:#fff;font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .3s;text-shadow:none;z-index:10001}
.lightbox-close:hover{background:rgba(255,255,255,0.25)}
.lightbox-nav{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;border:none;background:rgba(255,255,255,0.1);color:#fff;font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .3s;text-shadow:none}
.lightbox-nav:hover{background:rgba(255,255,255,0.25)}
.lightbox-prev{left:16px}
.lightbox-next{right:16px}

/* CONTACTS */
.contacts-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.contact-info-card{background:var(--card-bg);border:none;border-radius:var(--radius);padding:28px;position:relative;isolation:isolate}
.contact-info-card::before{content:"";position:absolute;inset:-1px;border-radius:15px;padding:1px;background:conic-gradient(from var(--border-angle),#F6F8FE,#F9F64B,#EB4964,#54667E,#6884C0,#DAFAFF,#F9F9FD,#EDB675,#571E1B,#20191B,#3A3E57,#898FA2,#F6F8FE);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;animation:border-spin 3s linear infinite;z-index:-1;pointer-events:none}
.contact-info{display:flex;flex-direction:column;gap:16px}
.contact-item{display:flex;align-items:flex-start;gap:12px}
.contact-icon{font-size:24px;min-width:32px;text-align:center}
.contact-label{font-size:11px;color:var(--gold);text-transform:uppercase;letter-spacing:1px;font-family:var(--font-h);font-weight:600;text-shadow:var(--ts)}
.contact-value{font-size:15px;color:#fff;margin-top:2px;text-shadow:var(--ts)}
.contact-value a{color:#fff;text-decoration:none;transition:color .3s}
.contact-value a:hover{color:var(--gold)}
.contact-form{display:flex;flex-direction:column;gap:12px}
.form-group{display:flex;flex-direction:column;gap:4px}
.form-group label{font-size:11px;color:var(--gold);text-transform:uppercase;letter-spacing:1px;font-family:var(--font-h);font-weight:600;text-shadow:var(--ts)}
.form-group input,.form-group textarea{background:rgba(255,255,255,0.06);border:1px solid rgba(201,168,76,0.2);border-radius:8px;padding:12px 16px;color:#fff;font-size:14px;font-family:var(--font-b);transition:border-color .3s;outline:none;text-shadow:none}
.form-group input::placeholder,.form-group textarea::placeholder{color:#ffffff;opacity:0.6}
.form-group input:focus,.form-group textarea:focus{border-color:var(--gold)}
.form-group textarea{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* FOOTER */
.site-footer{padding:24px;text-align:center;font-size:11px;color:rgba(255,255,255,.35);position:relative;z-index:10;text-shadow:var(--ts)}

/* SCROLL INDICATOR */
.scroll-indicator{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);z-index:100;display:flex;flex-direction:column;align-items:center;gap:6px;opacity:.6;transition:opacity .4s;pointer-events:none}
.scroll-indicator.hide{opacity:0}
.scroll-arrow{width:20px;height:20px;border-right:2px solid var(--gold);border-bottom:2px solid var(--gold);transform:rotate(45deg);animation:bounce-arrow 2s ease-in-out infinite}
@keyframes bounce-arrow{0%,100%{transform:rotate(45deg) translateY(0)}50%{transform:rotate(45deg) translateY(6px)}}
.scroll-text{font-size:9px;color:var(--gold);letter-spacing:3px;text-transform:uppercase;font-family:var(--font-h)}

/* RESPONSIVE */
@media(max-width:960px){
  .about-layout,.geo-layout,.contacts-layout{grid-template-columns:1fr}
  .directions-grid{grid-template-columns:1fr}
  .advantages-grid{grid-template-columns:repeat(2,1fr)}
  .desktop-nav,.header-cta{display:none}
  .burger{display:block}
  .mobile-nav.open{display:flex}
  .logo-text{font-size:20px;letter-spacing:1px}
  .hero-line1{font-size:clamp(18px,5vw,30px)}
  .hero-logo{width:33%;max-width:185px}
  .carousel-card{width:clamp(180px,45vw,260px);height:clamp(220px,55vw,340px)}
  .carousel-card.left-2{transform:translateX(-55vw) scale(0.7) translateZ(-300px)}
  .carousel-card.left-1{transform:translateX(-28vw) scale(0.85) translateZ(-100px)}
  .carousel-card.right-1{transform:translateX(28vw) scale(0.85) translateZ(-100px)}
  .carousel-card.right-2{transform:translateX(55vw) scale(0.7) translateZ(-300px)}
}
@media(max-width:600px){
  .advantages-grid{grid-template-columns:1fr}
  .about-cards{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .geo-stats{grid-template-columns:1fr}
  .hero-stats{gap:16px}
  .stat{min-width:80px}
}