:root{
  --byr-blue:#2E9DC4;
  --byr-blue-dark:#1e7a9a;
  --byr-blue-light:#4db8dc;
  --byr-dark:#0D1117;
  --byr-dark-2:#141B24;
  --byr-dark-3:#1C2733;
  --byr-dark-card:#1a2332;
  --byr-white:#FFFFFF;
  --byr-text-muted:#8B9BAD;
  --byr-border:rgba(46,157,196,0.15);
  --byr-border-light:rgba(255,255,255,0.06);
  --font-display:'Barlow Condensed',sans-serif;
  --font-body:'DM Sans',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--byr-dark);color:var(--byr-white);overflow-x:hidden;line-height:1.6}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 5%;height:72px;background:rgba(13,17,23,0.85);backdrop-filter:blur(16px);border-bottom:1px solid var(--byr-border-light);transition:background 0.3s}
.nav-logo img{height:36px;width:auto}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{font-size:14px;font-weight:500;color:var(--byr-text-muted);text-decoration:none;transition:color 0.2s;letter-spacing:0.01em}
.nav-links a:hover,.nav-links a.active{color:var(--byr-white)}
.nav-cta{background:var(--byr-blue)!important;color:var(--byr-white)!important;padding:10px 22px;border-radius:4px;font-weight:600!important;letter-spacing:0.02em}
.nav-cta:hover{background:var(--byr-blue-dark)!important;color:var(--byr-white)!important}
.nav-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none}
.nav-hamburger span{display:block;width:24px;height:2px;background:var(--byr-white);border-radius:2px;transition:all 0.3s}
.nav-mobile{display:none;position:fixed;top:72px;left:0;right:0;background:var(--byr-dark-2);border-bottom:1px solid var(--byr-border-light);padding:24px 5%;z-index:99;flex-direction:column;gap:20px}
.nav-mobile.open{display:flex}
.nav-mobile a{font-size:16px;font-weight:500;color:var(--byr-text-muted);text-decoration:none;padding:8px 0;border-bottom:1px solid var(--byr-border-light)}
.nav-mobile a:last-child{border-bottom:none;color:var(--byr-blue);font-weight:600}

/* FOOTER */
footer{background:var(--byr-dark);border-top:1px solid var(--byr-border-light);padding:72px 5% 40px}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:60px;margin-bottom:60px}
.footer-brand img{height:32px;margin-bottom:20px}
.footer-brand p{font-size:14px;color:var(--byr-text-muted);line-height:1.7;max-width:280px}
.footer-col h4{font-size:11px;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;color:var(--byr-white);margin-bottom:20px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;color:var(--byr-text-muted);text-decoration:none;transition:color 0.2s}
.footer-col ul li a:hover{color:var(--byr-blue)}
.footer-bottom{border-top:1px solid var(--byr-border-light);padding-top:32px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-legal{font-size:13px;color:var(--byr-text-muted)}
.footer-legal span{margin:0 10px;opacity:0.3}
.footer-legal a{color:var(--byr-text-muted);text-decoration:none}
.footer-legal a:hover{color:var(--byr-blue)}
.footer-copy{font-size:13px;color:var(--byr-text-muted)}

/* UTILS */
section{position:relative;z-index:1}
.container{padding-left:5%;padding-right:5%}
.section-label{font-size:11px;font-weight:600;letter-spacing:0.15em;text-transform:uppercase;color:var(--byr-blue);margin-bottom:16px}
.section-title{font-family:var(--font-display);font-size:clamp(36px,5vw,64px);font-weight:800;line-height:1;letter-spacing:-0.01em;text-transform:uppercase;margin-bottom:20px}
.section-subtitle{font-size:17px;color:var(--byr-text-muted);font-weight:300;line-height:1.7;max-width:560px}
.btn-primary{display:inline-flex;align-items:center;gap:10px;background:var(--byr-blue);color:var(--byr-white);font-family:var(--font-body);font-size:15px;font-weight:600;padding:14px 28px;border-radius:4px;text-decoration:none;letter-spacing:0.02em;transition:background 0.2s,transform 0.2s;border:none;cursor:pointer}
.btn-primary:hover{background:var(--byr-blue-dark);transform:translateY(-1px)}
.btn-outline{display:inline-flex;align-items:center;gap:10px;background:transparent;color:var(--byr-white);font-family:var(--font-body);font-size:15px;font-weight:600;padding:13px 28px;border-radius:4px;text-decoration:none;letter-spacing:0.02em;transition:all 0.2s;border:1px solid rgba(255,255,255,0.2);cursor:pointer}
.btn-outline:hover{border-color:var(--byr-blue);color:var(--byr-blue)}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;color:var(--byr-white);font-size:15px;font-weight:500;text-decoration:none;padding:14px 0;border-bottom:1px solid rgba(255,255,255,0.2);transition:border-color 0.2s,color 0.2s}
.btn-secondary:hover{border-color:var(--byr-blue);color:var(--byr-blue)}

/* PAGE HERO (inner pages) */
.page-hero{padding:140px 5% 80px;background:var(--byr-dark-2);border-bottom:1px solid var(--byr-border-light);position:relative;overflow:hidden}
.page-hero-glow{position:absolute;top:-200px;right:-100px;width:600px;height:600px;background:radial-gradient(ellipse,rgba(46,157,196,0.1) 0%,transparent 70%);pointer-events:none}
.page-hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(46,157,196,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(46,157,196,0.03) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black 30%,transparent 100%)}
.page-hero-content{position:relative;z-index:1;max-width:700px}
.page-hero h1{font-family:var(--font-display);font-size:clamp(48px,7vw,88px);font-weight:800;line-height:0.95;text-transform:uppercase;letter-spacing:-0.01em;margin-bottom:20px}
.page-hero h1 .accent{color:var(--byr-blue)}
.page-hero p{font-size:18px;font-weight:300;color:var(--byr-text-muted);line-height:1.7;max-width:520px;margin-bottom:36px}

/* CARDS */
.card-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:2px;border-radius:8px;overflow:hidden}
.card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;border-radius:8px;overflow:hidden}
.dark-card{background:var(--byr-dark-3);padding:40px;transition:background 0.3s}
.dark-card:hover{background:var(--byr-dark-card)}
.icon-box{width:52px;height:52px;background:rgba(46,157,196,0.1);border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:24px;flex-shrink:0}
.icon-box svg{color:var(--byr-blue);width:24px;height:24px}
.icon-box.lg{width:64px;height:64px}
.icon-box.lg svg{width:28px;height:28px}
.tag{display:inline-block;background:rgba(46,157,196,0.08);border:1px solid rgba(46,157,196,0.2);color:var(--byr-blue-light);font-size:11px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;padding:4px 12px;border-radius:100px;margin-right:6px;margin-bottom:6px}

/* MARQUEE */
.marquee-section{padding:26px 0;background:var(--byr-dark-2);border-top:1px solid var(--byr-border-light);border-bottom:1px solid var(--byr-border-light);overflow:hidden}
.marquee-track{display:flex;gap:60px;animation:marquee 24s linear infinite;width:max-content}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.marquee-item{display:flex;align-items:center;gap:12px;font-family:var(--font-display);font-size:15px;font-weight:600;letter-spacing:0.06em;text-transform:uppercase;color:var(--byr-text-muted);white-space:nowrap}
.marquee-dot{width:5px;height:5px;border-radius:50%;background:var(--byr-blue);flex-shrink:0}

/* WHATSAPP */
.whatsapp-float{position:fixed;bottom:28px;right:28px;z-index:200;width:56px;height:56px;background:#25D366;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(37,211,102,0.35);text-decoration:none;transition:transform 0.2s}
.whatsapp-float:hover{transform:scale(1.08)}
.whatsapp-float svg{width:28px;height:28px;color:white}

/* FORMS */
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:12px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--byr-text-muted);margin-bottom:8px}
.form-group input,.form-group select,.form-group textarea{width:100%;background:var(--byr-dark-3);border:1px solid var(--byr-border-light);border-radius:6px;color:var(--byr-white);font-family:var(--font-body);font-size:15px;padding:12px 16px;outline:none;transition:border-color 0.2s;-webkit-appearance:none;appearance:none}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--byr-text-muted);opacity:0.6}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--byr-blue)}
.form-group select option{background:var(--byr-dark-3)}
.form-group textarea{resize:vertical;min-height:110px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}

/* FADE ANIMATION */
.fade-up{opacity:0;transform:translateY(28px);transition:opacity 0.65s ease,transform 0.65s ease;animation:fadeUpAnim 0.8s ease forwards}
.fade-up.visible{opacity:1;transform:translateY(0)}
@keyframes fadeUpAnim{to{opacity:1;transform:translateY(0)}}

/* BADGE */
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(46,157,196,0.1);border:1px solid rgba(46,157,196,0.3);color:var(--byr-blue-light);font-size:12px;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;padding:6px 14px;border-radius:100px;margin-bottom:24px}
.hero-badge::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--byr-blue);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.5;transform:scale(0.8)}}

/* RESPONSIVE */
@media(max-width:1024px){
  .footer-top{grid-template-columns:1fr 1fr;gap:40px}
  .card-grid-3{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-hamburger{display:flex}
  .card-grid-2,.card-grid-3{grid-template-columns:1fr}
  .form-row,.form-row-3{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .page-hero{padding:120px 5% 60px}
}