/* Rotunda Scientific Technologies LLC — Dark theme */
:root {
    --bg-primary: #0b0f0c; --bg-secondary: #101410; --bg-card: #161e18; --bg-card-hover: #1c281f;
    --bg-elevated: #1a221c; --border-color: #2a3e30; --border-active: #3f6a4a;
    --text-primary: #f0f8f2; --text-secondary: #a0c0a8; --text-muted: #60886a;
    --accent-primary: #34d399; --accent-secondary: #a78bfa;
    --accent-glow: rgba(52, 211, 153, 0.12);
    --gradient-1: linear-gradient(135deg, #34d399, #a78bfa);
    --gradient-2: linear-gradient(135deg, #34d399, #22d3ee);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --shadow-card: 0 4px 20px rgba(0,0,0,0.4);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px;
    --nav-height: 72px; --max-width: 1200px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-primary);background:var(--bg-primary);color:var(--text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--accent-primary);text-decoration:none;transition:color .3s ease}
a:hover{color:var(--accent-secondary)}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--text-primary)}
.gradient-text{background:var(--gradient-1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section{padding:100px 0;position:relative}
.section-dark{background:var(--bg-secondary)}
.section-header{text-align:center;margin-bottom:60px;max-width:640px;margin-left:auto;margin-right:auto}
.section-tag{display:inline-block;font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:2px;color:var(--accent-primary);background:rgba(52,211,153,0.1);border:1px solid rgba(52,211,153,0.2);padding:6px 16px;border-radius:100px;margin-bottom:16px}
.section-header h2{font-size:2.5rem;margin-bottom:16px}
.section-header p{color:var(--text-secondary);font-size:1.1rem}
.section-footer{text-align:center;margin-top:48px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;font-family:var(--font-primary);font-size:.95rem;font-weight:600;border-radius:var(--radius-sm);border:none;cursor:pointer;transition:all .3s ease;text-decoration:none;white-space:nowrap}
.btn-primary{background:var(--gradient-1);color:#0b0f0c!important;box-shadow:0 4px 15px rgba(52,211,153,0.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(52,211,153,0.4)}
.btn-outline{background:transparent;color:var(--text-primary)!important;border:1px solid var(--border-color)}
.btn-outline:hover{border-color:var(--accent-primary);background:rgba(52,211,153,0.05);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:.85rem}
.btn-lg{padding:18px 36px;font-size:1.05rem}
.btn-block{width:100%;justify-content:center}
.header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(11,15,12,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,0.05);height:var(--nav-height);transition:background .3s ease}
.header.scrolled{background:rgba(11,15,12,0.95);border-bottom-color:var(--border-color)}
.nav{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height)}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none!important;color:var(--text-primary)!important}
.logo-icon{font-size:1.8rem;color:var(--accent-primary)}
.logo-text{display:flex;flex-direction:column}
.logo-name{font-size:1.1rem;font-weight:800;letter-spacing:1px;line-height:1.2}
.logo-sub{font-size:.65rem;font-weight:500;color:var(--text-muted);letter-spacing:.5px}
.nav-menu{display:flex;list-style:none;gap:8px}
.nav-menu a{padding:8px 16px;color:var(--text-secondary)!important;font-size:.9rem;font-weight:500;border-radius:var(--radius-sm);transition:all .3s ease}
.nav-menu a:hover,.nav-menu a.active{color:var(--text-primary)!important;background:rgba(255,255,255,0.05)}
.nav-menu a.active{color:var(--accent-primary)!important}
.nav-actions{display:flex;align-items:center;gap:12px}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.hamburger span{display:block;width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:all .3s ease}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding-top:var(--nav-height);overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(52,211,153,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(52,211,153,0.03) 1px,transparent 1px);background-size:60px 60px;opacity:.5}
.hero-glow{position:absolute;top:20%;left:50%;transform:translateX(-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(52,211,153,0.06) 0%,transparent 70%);pointer-events:none}
.hero-content{position:relative;z-index:1;text-align:center;padding:40px 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(52,211,153,0.1);border:1px solid rgba(52,211,153,0.2);padding:8px 20px;border-radius:100px;font-size:.85rem;color:var(--accent-primary);margin-bottom:24px}
.hero-title{font-size:3.5rem;font-weight:800;line-height:1.2;margin-bottom:24px;letter-spacing:-.5px}
.hero-description{font-size:1.15rem;color:var(--text-secondary);max-width:620px;margin:0 auto 40px;line-height:1.8}
.hero-actions{display:flex;gap:16px;justify-content:center;margin-bottom:60px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative;z-index:1;max-width:900px;margin:0 auto}
.stat-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px;text-align:center;transition:all .3s ease}
.stat-card:hover{background:var(--bg-card-hover);border-color:var(--border-active);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.stat-number{font-size:2.5rem;font-weight:800;background:var(--gradient-1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.stat-plus,.stat-percent{font-size:1.5rem;font-weight:700;color:var(--accent-primary);margin-left:2px}
.stat-label{display:block;font-size:.8rem;color:var(--text-muted);margin-top:8px;text-transform:uppercase;letter-spacing:.5px}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:32px;transition:all .3s ease;position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-1);opacity:0;transition:opacity .3s ease}
.service-card:hover{background:var(--bg-card-hover);border-color:var(--border-active);transform:translateY(-6px);box-shadow:var(--shadow-card)}
.service-card:hover::before{opacity:1}
.service-icon{width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:rgba(52,211,153,0.1);border-radius:var(--radius-sm);margin-bottom:20px;font-size:1.4rem;color:var(--accent-primary)}
.service-card h3{font-size:1.15rem;margin-bottom:12px}
.service-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.7}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-item{text-align:center;padding:32px 20px;background:var(--bg-card);border-radius:var(--radius-md);border:1px solid var(--border-color);transition:all .3s ease}
.feature-item:hover{background:var(--bg-card-hover);border-color:var(--border-active);transform:translateY(-4px)}
.feature-icon{width:56px;height:56px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;background:rgba(52,211,153,0.1);border-radius:50%;font-size:1.3rem;color:var(--accent-primary)}
.feature-item h3{font-size:1.05rem;margin-bottom:10px}
.feature-item p{color:var(--text-secondary);font-size:.85rem;line-height:1.6}
.tech-scroll{display:flex;flex-wrap:wrap;justify-content:center;gap:20px;padding:20px 0}
.tech-item{display:flex;align-items:center;gap:10px;padding:14px 24px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;color:var(--text-secondary);transition:all .3s ease}
.tech-item:hover{border-color:var(--accent-primary);color:var(--text-primary);transform:translateY(-3px);box-shadow:var(--shadow-card)}
.tech-item i{font-size:1.4rem;color:var(--accent-primary)}
.cta-section{padding:100px 0;background:var(--bg-secondary);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:500px;height:500px;background:radial-gradient(circle,rgba(52,211,153,0.06) 0%,transparent 70%);pointer-events:none}
.cta-content{text-align:center;position:relative;z-index:1}
.cta-content h2{font-size:2.5rem;margin-bottom:16px}
.cta-content p{color:var(--text-secondary);font-size:1.1rem;margin-bottom:32px;max-width:520px;margin-left:auto;margin-right:auto}
.page-banner{padding:140px 0 60px;text-align:center;background:linear-gradient(180deg,rgba(52,211,153,0.05),transparent);position:relative}
.page-banner-sm{padding:120px 0 40px}
.page-banner-tag{display:inline-block;font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:2px;color:var(--accent-primary);background:rgba(52,211,153,0.1);border:1px solid rgba(52,211,153,0.2);padding:6px 16px;border-radius:100px;margin-bottom:16px}
.page-banner h1{font-size:3rem;margin-bottom:12px}
.page-banner p{color:var(--text-secondary);font-size:1.1rem;max-width:600px;margin:0 auto}
.services-detail-grid{display:flex;flex-direction:column;gap:24px}
.service-detail-card{display:flex;gap:32px;padding:36px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:all .3s ease}
.service-detail-card:hover{background:var(--bg-card-hover);border-color:var(--border-active);transform:translateY(-3px);box-shadow:var(--shadow-card)}
.sd-icon{flex-shrink:0;width:64px;height:64px;display:flex;align-items:center;justify-content:center;background:rgba(52,211,153,0.1);border-radius:var(--radius-md);font-size:1.6rem;color:var(--accent-primary)}
.sd-content h3{font-size:1.2rem;margin-bottom:12px}
.sd-content p{color:var(--text-secondary);font-size:.92rem;line-height:1.7;margin-bottom:16px}
.sd-features{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.sd-features li{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-secondary)}
.sd-features li i{color:var(--accent-primary);font-size:.9rem}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-step{text-align:center;padding:36px 24px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all .3s ease}
.process-step:hover{border-color:var(--border-active);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.step-number{font-family:var(--font-mono);font-size:2rem;font-weight:800;color:var(--accent-primary);margin-bottom:16px;opacity:.5}
.process-step h3{font-size:1.05rem;margin-bottom:10px}
.process-step p{color:var(--text-secondary);font-size:.85rem;line-height:1.6}
.about-intro{display:grid;grid-template-columns:1.3fr 0.7fr;gap:48px;align-items:start}
.about-intro-text h2{font-size:2rem;margin-bottom:16px}
.about-tagline{font-size:1.15rem;color:var(--accent-primary);margin-bottom:20px;font-weight:500}
.about-intro-text p{color:var(--text-secondary);margin-bottom:16px;line-height:1.8}
.about-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{display:inline-block;padding:6px 16px;font-size:.8rem;font-weight:500;color:var(--accent-primary);background:rgba(52,211,153,0.08);border:1px solid rgba(52,211,153,0.2);border-radius:100px}
.about-intro-stats{display:flex;flex-direction:column;gap:16px}
.stat-block{padding:24px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);text-align:center;transition:all .3s ease}
.stat-block:hover{border-color:var(--border-active);transform:translateY(-3px)}
.stat-big{font-size:2.2rem;font-weight:800;background:var(--gradient-1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-unit{font-size:1.2rem;font-weight:600;color:var(--accent-primary)}
.stat-block p{color:var(--text-muted);font-size:.85rem;margin-top:4px}
.expertise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.expertise-item{text-align:center;padding:40px 24px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all .3s ease}
.expertise-item:hover{border-color:var(--border-active);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.expertise-item i{font-size:2rem;color:var(--accent-primary);margin-bottom:16px}
.expertise-item h3{font-size:1.1rem;margin-bottom:10px}
.expertise-item p{color:var(--text-secondary);font-size:.88rem;line-height:1.6}
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value-card{text-align:center;padding:32px 20px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all .3s ease}
.value-card:hover{border-color:var(--border-active);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.value-icon{width:56px;height:56px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;background:rgba(52,211,153,0.1);border-radius:50%;font-size:1.3rem;color:var(--accent-primary)}
.value-card h3{font-size:1.05rem;margin-bottom:10px}
.value-card p{color:var(--text-secondary);font-size:.85rem;line-height:1.6}
.contact-grid{display:grid;grid-template-columns:0.8fr 1.2fr;gap:48px}
.contact-info-panel{display:flex;flex-direction:column;gap:16px}
.contact-info-card{padding:24px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all .3s ease}
.contact-info-card:hover{border-color:var(--border-active);transform:translateY(-2px)}
.ci-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:rgba(52,211,153,0.1);border-radius:var(--radius-sm);font-size:1.1rem;color:var(--accent-primary);margin-bottom:12px}
.contact-info-card h3{font-size:.95rem;margin-bottom:8px}
.contact-info-card p,.contact-info-card a{color:var(--text-secondary);font-size:.9rem;line-height:1.6}
.contact-form-panel{padding:36px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg)}
.contact-form-panel h2{font-size:1.5rem;margin-bottom:8px}
.contact-form-panel>p{color:var(--text-secondary);margin-bottom:24px}
.contact-form{display:flex;flex-direction:column;gap:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{display:flex;flex-direction:column;gap:8px}
.form-group label{font-size:.85rem;font-weight:500;color:var(--text-secondary)}
.form-group input,.form-group textarea{padding:14px 16px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-primary);font-size:.9rem;transition:all .3s ease;outline:none}
.form-group input:focus,.form-group textarea:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(52,211,153,0.1)}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}
.form-success{text-align:center;padding:48px 24px}
.form-success i{font-size:3rem;color:#4caf50;margin-bottom:16px}
.form-success h3{margin-bottom:8px}
.form-success p{color:var(--text-secondary)}
.hidden{display:none}
.legal-container{max-width:800px;margin:0 auto}
.legal-content h2{font-size:1.5rem;margin-top:48px;margin-bottom:16px;color:var(--text-primary)}
.legal-content h3{font-size:1.15rem;margin-top:28px;margin-bottom:12px;color:var(--text-primary)}
.legal-content h2:first-of-type{margin-top:0}
.legal-content p{color:var(--text-secondary);margin-bottom:16px;line-height:1.8}
.legal-content ul{margin-bottom:20px;padding-left:24px}
.legal-content ul li{color:var(--text-secondary);margin-bottom:8px;line-height:1.7}
.legal-content strong{color:var(--text-primary)}
.footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--text-muted);font-size:.85rem;line-height:1.7;margin-bottom:16px}
.footer-contact{display:flex;flex-direction:column;gap:8px}
.footer-contact a{color:var(--text-secondary)!important;font-size:.85rem;display:flex;align-items:center;gap:8px}
.footer-contact a:hover{color:var(--accent-primary)!important}
.footer-links h4{font-size:.85rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:16px}
.footer-links a{display:block;color:var(--text-secondary)!important;font-size:.9rem;margin-bottom:10px;transition:all .3s ease}
.footer-links a:hover{color:var(--accent-primary)!important;padding-left:4px}
.footer-bottom{border-top:1px solid var(--border-color);padding:20px 0;text-align:center}
.footer-bottom p{color:var(--text-muted);font-size:.8rem}
.error-page{min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;margin-top:40px}
.error-content{padding:60px 40px}
.error-code{font-family:var(--font-mono);font-size:8rem;font-weight:800;background:var(--gradient-1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1;display:block;margin-bottom:16px}
.error-content h1{font-size:2rem;margin-bottom:12px}
.error-content p{color:var(--text-secondary);margin-bottom:32px;font-size:1.05rem}
@media (max-width:1024px){
.hero-title{font-size:2.8rem}
.services-grid,.features-grid,.values-grid{grid-template-columns:repeat(2,1fr)}
.process-steps,.expertise-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
.about-intro,.contact-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
.nav-menu{position:fixed;top:var(--nav-height);left:0;right:0;background:rgba(11,15,12,0.98);backdrop-filter:blur(20px);flex-direction:column;padding:24px;gap:4px;border-bottom:1px solid var(--border-color);transform:translateY(-100%);opacity:0;pointer-events:none;transition:all .3s ease}
.nav-menu.active{transform:translateY(0);opacity:1;pointer-events:all}
.hamburger{display:flex}
.hero-title{font-size:2.2rem}
.hero-stats{grid-template-columns:repeat(2,1fr)}
.section{padding:60px 0}
.section-header h2,.cta-content h2{font-size:1.8rem}
.services-grid,.features-grid,.values-grid,.process-steps,.expertise-grid,.footer-grid,.form-row{grid-template-columns:1fr}
.service-detail-card,.hero-actions{flex-direction:column;align-items:center}
.sd-features{grid-template-columns:1fr}
.service-detail-card{padding:24px;gap:20px}
.contact-form-panel{padding:24px}
.page-banner h1{font-size:2rem}
.error-code{font-size:5rem}
.nav-actions .btn-sm{display:none}
}
@media (max-width:480px){
.hero-stats{grid-template-columns:1fr 1fr;gap:10px}
.stat-card{padding:16px}
.stat-number{font-size:1.8rem}
}