/* ============================================
   SRN D.O.O. — Corporate Light Theme v3
   ============================================ */
:root {
    --bg-deep: #ffffff;
    --bg-primary: #f5f7fa;
    --bg-card: #ffffff;
    --bg-card-hover: #fafbfc;
    --surface: rgba(0,0,0,0.03);
    --border: rgba(0,0,0,0.08);
    --border-accent: rgba(30,64,120,0.2);
    --text: #1a2332;
    --text-2: #4a5568;
    --text-3: #8896a6;
    --accent: #1e4078;
    --accent-l: #2b5ea7;
    --accent-glow: rgba(30,64,120,0.08);
    --gold: #c8952e;
    --gold-l: #d4a843;
    --gold-glow: rgba(200,149,46,0.1);
    --container: 1200px;
    --nav-h: 72px;
    --radius: 10px;
    --ease: cubic-bezier(.4,0,.2,1);
    --t: .3s var(--ease);
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}
body{font-family:'Inter',-apple-system,sans-serif;background:var(--bg-deep);color:var(--text);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.text-accent{color:var(--accent)}

/* ===== NAV ===== */
.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:1000;transition:var(--t);background:rgba(255,255,255,.85);backdrop-filter:blur(20px);border-bottom:1px solid transparent}
.navbar.scrolled{background:rgba(255,255,255,.97);backdrop-filter:blur(24px);border-bottom:1px solid var(--border);box-shadow:0 1px 20px rgba(0,0,0,.06)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:100%}
.nav-logo{display:flex;align-items:center;gap:12px;z-index:100}
.logo-mark{width:46px;height:46px;background:#1a2332;border:none;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:var(--t);position:relative;overflow:hidden;box-shadow:var(--shadow-md);padding:8px}
.logo-mark::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.08),transparent);opacity:1;transition:var(--t)}
.nav-logo:hover .logo-mark{box-shadow:var(--shadow-lg);transform:translateY(-1px)}
.logo-mark svg{width:100%;height:100%}
.logo-mark.sm{width:36px;height:36px;border-radius:6px;padding:6px}
.logo-mark.sm svg{width:100%;height:100%}
.logo-info{display:flex;flex-direction:column;line-height:1.2}
.logo-name{font-family:'Outfit',sans-serif;font-size:1.4rem;font-weight:800;letter-spacing:-.5px;color:var(--text)}
.logo-doo{font-weight:500;color:var(--text-3);font-size:.85em}
.logo-sub{font-size:.65rem;color:var(--text-3);letter-spacing:.5px;text-transform:uppercase}
.nav-right{display:flex;align-items:center;gap:8px}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{padding:8px 14px;font-size:.88rem;font-weight:500;color:var(--text-2);border-radius:8px;transition:var(--t);position:relative}
.nav-link:hover,.nav-link.active{color:var(--text);background:var(--surface)}
.nav-link.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:18px;height:2px;background:var(--accent);border-radius:2px}
.nav-cta{background:var(--accent)!important;color:#fff!important;font-weight:600!important;padding:8px 18px!important;box-shadow:0 2px 8px rgba(30,64,120,.2)}
.nav-cta:hover{background:var(--accent-l)!important;transform:translateY(-1px);box-shadow:0 4px 16px rgba(30,64,120,.25)}
.lang-toggle{display:flex;align-items:center;gap:6px;padding:6px 12px;background:var(--bg-primary);border:1px solid var(--border);border-radius:8px;color:var(--text-2);font-size:.8rem;font-weight:600;cursor:pointer;transition:var(--t);font-family:inherit}
.lang-toggle:hover{border-color:var(--accent);color:var(--accent)}
.lang-flag{font-size:1rem}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;z-index:100;padding:4px}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:var(--t)}

/* ===== HERO ===== */
.hero{min-height:100vh;position:relative;display:flex;flex-direction:column}
.hero-slider{position:absolute;inset:0;z-index:0}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1s ease,transform 8s ease;transform:scale(1.05)}
.hero-slide.active{opacity:1;transform:scale(1)}
.hero-slide .slide-content{position:absolute;bottom:120px;right:60px;text-align:right;z-index:3;opacity:0;transform:translateY(20px);transition:opacity .6s ease .5s,transform .6s ease .5s}
.hero-slide.active .slide-content{opacity:1;transform:translateY(0)}
.slide-content h2{font-family:'Outfit',sans-serif;font-size:1.1rem;font-weight:700;color:#fff;text-transform:uppercase;letter-spacing:2px;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.slide-content p{font-size:.85rem;color:rgba(255,255,255,.8);text-shadow:0 1px 4px rgba(0,0,0,.3)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,35,50,.88)0%,rgba(30,64,120,.65)50%,rgba(26,35,50,.8)100%);z-index:1}

/* Slider controls */
.slider-btn{position:absolute;top:50%;z-index:5;width:48px;height:48px;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.12);backdrop-filter:blur(8px);border-radius:50%;color:#fff;font-size:1rem;cursor:pointer;transition:var(--t);display:flex;align-items:center;justify-content:center}
.slider-btn:hover{background:#fff;border-color:#fff;color:var(--accent)}
.slider-prev{left:24px;transform:translateY(-50%)}
.slider-next{right:24px;transform:translateY(-50%)}
.slider-dots{position:absolute;bottom:100px;left:50%;transform:translateX(-50%);z-index:5;display:flex;gap:10px}
.slider-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.3);border:none;cursor:pointer;transition:var(--t)}
.slider-dot.active{background:#fff;box-shadow:0 0 12px rgba(255,255,255,.5)}
.slider-progress{position:absolute;bottom:80px;left:50%;transform:translateX(-50%);width:200px;height:3px;background:rgba(255,255,255,.15);border-radius:3px;z-index:5;overflow:hidden}
.slider-progress-bar{height:100%;background:#fff;width:0;border-radius:3px;transition:none}
.slider-progress-bar.animate{transition:width 6s linear}

.hero-content{position:relative;z-index:2;flex:1;display:flex;flex-direction:column;justify-content:center;padding-top:calc(var(--nav-h) + 40px);padding-bottom:120px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:50px;font-size:.82rem;font-weight:600;color:#fff;margin-bottom:24px;width:fit-content;animation:fadeUp .7s ease;backdrop-filter:blur(8px)}
.hero-title{font-family:'Outfit',sans-serif;font-size:clamp(2.8rem,7vw,5.5rem);font-weight:900;line-height:1.05;letter-spacing:-3px;margin-bottom:24px;color:#fff}
.hero-line{display:block;animation:fadeUp .7s ease both}
.hero-line:nth-child(2){animation-delay:.1s}
.hero-highlight{background:linear-gradient(135deg,var(--gold),var(--gold-l));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:1.05rem;color:rgba(255,255,255,.8);max-width:560px;margin-bottom:36px;line-height:1.8;animation:fadeUp .7s ease .2s both}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;animation:fadeUp .7s ease .3s both}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;font-size:.92rem;font-weight:600;border-radius:8px;border:none;cursor:pointer;transition:var(--t);font-family:inherit}
.btn-primary{background:#fff;color:var(--accent);box-shadow:0 4px 24px rgba(0,0,0,.15)}
.btn-primary:hover{background:#fff;transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,0,0,.2)}
.btn-glass{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.25);backdrop-filter:blur(8px)}
.btn-glass:hover{border-color:#fff;background:rgba(255,255,255,.18);color:#fff}
.btn-full{width:100%;justify-content:center}

/* Stats bar */
.stats-bar{position:relative;z-index:3;background:#fff;border-top:1px solid var(--border);padding:32px 0;box-shadow:0 -4px 20px rgba(0,0,0,.04)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{display:flex;align-items:center;gap:14px;justify-content:center}
.stat-item i{font-size:1.3rem;color:var(--accent);opacity:.6}
.stat-num{font-family:'Outfit',sans-serif;font-size:2.2rem;font-weight:800;color:var(--accent);line-height:1}
.stat-plus{font-family:'Outfit',sans-serif;font-size:1.2rem;font-weight:700;color:var(--accent)}
.stat-lbl{font-size:.78rem;color:var(--text-3);text-transform:uppercase;letter-spacing:.8px}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

/* ===== SECTIONS ===== */
.section{padding:100px 0}
.section-header{text-align:center;margin-bottom:60px}
.section-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:var(--accent-glow);border:1px solid rgba(30,64,120,.1);border-radius:50px;font-size:.75rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:16px}
.section-title{font-family:'Outfit',sans-serif;font-size:clamp(2rem,4vw,3rem);font-weight:800;letter-spacing:-1px;margin-bottom:12px;color:var(--text)}
.section-desc{font-size:1rem;color:var(--text-2);max-width:520px;margin:0 auto}

/* ===== ABOUT ===== */
.about{background:var(--bg-primary)}
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:start}
.about-text .lead{font-size:1.12rem;font-weight:500;color:var(--text);margin-bottom:16px;line-height:1.8}
.about-text p{color:var(--text-2);margin-bottom:14px;font-size:.93rem}
.about-tools{margin-top:28px;padding:24px;background:#fff;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.about-tools h4{margin-bottom:14px;display:flex;align-items:center;gap:8px;color:var(--accent);font-size:.88rem}
.tool-tags{display:flex;flex-wrap:wrap;gap:8px}
.tool-tag{padding:6px 14px;background:var(--accent-glow);border:1px solid rgba(30,64,120,.1);border-radius:6px;font-size:.8rem;font-weight:600;color:var(--accent)}
.about-features{display:flex;flex-direction:column;gap:16px}
.feature-card{padding:24px;background:#fff;border-radius:var(--radius);border:1px solid var(--border);display:flex;gap:18px;align-items:flex-start;transition:var(--t);box-shadow:var(--shadow-sm)}
.feature-card:hover{border-color:var(--border-accent);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.feature-icon{width:44px;height:44px;background:var(--accent-glow);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--accent);flex-shrink:0}
.feature-card h3{font-size:.98rem;font-weight:700;margin-bottom:4px;color:var(--text)}
.feature-card p{font-size:.84rem;color:var(--text-2);line-height:1.6}

/* ===== SERVICES ===== */
.services{background:#fff}
.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.service-card{padding:32px 24px;background:var(--bg-primary);border-radius:12px;border:1px solid var(--border);transition:var(--t);position:relative;overflow:hidden}
.service-card:hover{border-color:var(--border-accent);transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.service-num{position:absolute;top:20px;right:20px;font-family:'Outfit',sans-serif;font-size:2.2rem;font-weight:900;color:rgba(0,0,0,.04);line-height:1}
.service-icon{width:52px;height:52px;background:var(--accent);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;color:#fff;margin-bottom:18px;box-shadow:0 4px 12px rgba(30,64,120,.2)}
.service-card h3{font-size:1.02rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.service-card p{font-size:.87rem;color:var(--text-2);line-height:1.7}

/* ===== PORTFOLIO ===== */
.portfolio{background:var(--bg-primary)}
.portfolio-filters{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:36px}
.filter-btn{padding:8px 18px;background:#fff;border:1px solid var(--border);color:var(--text-2);border-radius:8px;font-size:.83rem;font-weight:500;cursor:pointer;transition:var(--t);font-family:inherit;box-shadow:var(--shadow-sm)}
.filter-btn:hover,.filter-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 4px 12px rgba(30,64,120,.2)}
.portfolio-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(275px,1fr));gap:16px}
.portfolio-item{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;cursor:pointer;transition:var(--t);box-shadow:var(--shadow-md)}
.portfolio-item.hidden{display:none}
.portfolio-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.portfolio-item:hover img{transform:scale(1.08)}
.portfolio-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(26,35,50,.95)0%,rgba(26,35,50,.3)50%,transparent 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:20px;opacity:0;transition:var(--t)}
.portfolio-item:hover .portfolio-overlay{opacity:1}
.portfolio-cat{display:inline-block;padding:3px 10px;background:var(--gold);color:#fff;border-radius:4px;font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;margin-bottom:6px;width:fit-content}
.portfolio-overlay h3{font-size:1.05rem;font-weight:700;margin-bottom:3px;color:#fff}
.portfolio-overlay p{font-size:.8rem;color:rgba(255,255,255,.7)}

/* ===== PARTNERS ===== */
.partners{background:#fff}
.partners-marquee{overflow:hidden;mask-image:linear-gradient(to right,transparent 0%,black 10%,black 90%,transparent 100%);-webkit-mask-image:linear-gradient(to right,transparent 0%,black 10%,black 90%,transparent 100%)}
.partners-track{display:flex;align-items:center;gap:56px;animation:marquee 30s linear infinite;width:max-content}
.partners-track img{height:44px;width:auto;opacity:.45;filter:grayscale(100%);transition:var(--t);flex-shrink:0}
.partners-track img:hover{opacity:1;filter:grayscale(0)}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ===== CONTACT ===== */
.contact{background:var(--bg-primary)}
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:40px}
.contact-info{display:flex;flex-direction:column;gap:14px}
.contact-card{display:flex;align-items:center;gap:14px;padding:18px;background:#fff;border-radius:var(--radius);border:1px solid var(--border);transition:var(--t);box-shadow:var(--shadow-sm)}
.contact-card:hover{border-color:var(--border-accent);box-shadow:var(--shadow-md)}
.contact-icon{width:44px;height:44px;background:var(--accent-glow);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1rem;color:var(--accent);flex-shrink:0}
.contact-card h4{font-size:.82rem;font-weight:600;margin-bottom:2px;color:var(--text)}
.contact-card p{font-size:.88rem;color:var(--text-2)}
.contact-form-wrap{padding:32px;background:#fff;border-radius:12px;border:1px solid var(--border);box-shadow:var(--shadow-md)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:.82rem;font-weight:600;color:var(--text-2);margin-bottom:5px}
.form-group input,.form-group textarea{width:100%;padding:11px 14px;background:var(--bg-primary);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:.88rem;font-family:inherit;transition:var(--t);outline:none}
.form-group input:focus,.form-group textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.form-group textarea{resize:vertical;min-height:110px}

/* ===== FOOTER ===== */
.footer{background:#1a2332;padding:56px 0 28px;border-top:none}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand p{color:rgba(255,255,255,.55);font-size:.88rem;line-height:1.7}
.footer-links h4{font-size:.85rem;font-weight:700;margin-bottom:14px;color:#fff}
.footer-links a{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.5);font-size:.85rem;padding:5px 0;transition:var(--t)}
.footer-links a:hover{color:var(--gold);transform:translateX(4px)}
.footer .logo-name{color:#fff}
.footer .logo-doo{color:rgba(255,255,255,.5)}
.footer-bottom{text-align:center;padding-top:28px;border-top:1px solid rgba(255,255,255,.08)}
.footer-bottom p{color:rgba(255,255,255,.35);font-size:.82rem}

/* ===== REVEAL ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
    .about-grid{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:768px){
    .nav-toggle{display:flex}
    .nav-menu{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:#fff;flex-direction:column;padding:90px 28px 28px;gap:4px;transition:right .3s var(--ease);border-left:1px solid var(--border);box-shadow:-4px 0 20px rgba(0,0,0,.08)}
    .nav-menu.active{right:0}
    .nav-link{width:100%;padding:12px 14px;font-size:.95rem}
    .nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
    .nav-toggle.active span:nth-child(2){opacity:0}
    .nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
    .stat-item{flex-direction:column;gap:6px;text-align:center}
    .section{padding:64px 0}
    .form-row{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .portfolio-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
    .filter-btn{padding:6px 12px;font-size:.78rem}
    .slider-btn{width:38px;height:38px;font-size:.85rem}
    .slider-prev{left:12px}.slider-next{right:12px}
    .hero-slide .slide-content{display:none}
}
@media(max-width:480px){
    .hero-actions{flex-direction:column}.btn{width:100%;justify-content:center}
    .stat-num{font-size:1.8rem}
    .contact-form-wrap{padding:22px 18px}
    .hero-title{letter-spacing:-1.5px}
}