/* ArcDev — styles.css */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --blue:#0070f3;
  --blue-dim:#aec6ff;
  --bg:#000;
  --surface:#131313;
  --surface-low:#0e0e0e;
  --surface-mid:#1f1f1f;
  --surface-high:#2a2a2a;
  --border:rgba(65,71,84,.15);
  --text:#e2e2e2;
  --text-muted:#8b90a0;
  --white:#fff;
}

html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,sans-serif;line-height:1.6;overflow-x:hidden}
::selection{background:var(--blue);color:#fff}
a{color:inherit;text-decoration:none}
button{cursor:pointer;border:none;font-family:inherit}
img{display:block;max-width:100%}
ul{list-style:none}

/* ---- Utility ---- */
.container{max-width:1280px;margin:0 auto;padding:0 2rem}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

/* ---- Animations ---- */
.fade-up{opacity:0;transform:translateY(32px);transition:opacity .7s ease,transform .7s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.pulse{animation:pulse 2s ease-in-out infinite}

/* ---- Nav ---- */
.nav{position:fixed;top:0;width:100%;z-index:50;background:rgba(0,0,0,.72);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.nav-inner{display:flex;justify-content:space-between;align-items:center;max-width:1280px;margin:0 auto;padding:1.5rem 2rem}
.nav-logo{font-size:1.5rem;font-weight:900;letter-spacing:-.05em;color:var(--white)}
.nav-links{display:flex;align-items:center;gap:2rem}
.nav-links a{color:#999;font-size:.875rem;font-weight:500;letter-spacing:-.01em;transition:color .2s}
.nav-links a:hover{color:var(--white)}
.btn-primary{background:var(--blue);color:#fff;padding:.625rem 1.5rem;font-size:.8125rem;font-weight:700;transition:transform .15s,background .2s}
.btn-primary:hover{background:#005bd4}
.btn-primary:active{transform:scale(.95)}
.btn-outline{border:1px solid rgba(65,71,84,.3);background:transparent;color:#fff;padding:.875rem 2rem;font-size:.8125rem;font-weight:700;transition:background .2s}
.btn-outline:hover{background:rgba(255,255,255,.05)}
.btn-large{padding:.875rem 2.5rem;font-size:.875rem}
.nav-toggle{display:none;background:none;color:#fff;font-size:1.5rem;padding:.25rem}

/* ---- Hero ---- */
.hero{padding:10rem 0 5rem;display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.25rem .75rem;background:var(--surface-low);border:1px solid var(--border);font-size:.6875rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;margin-bottom:2rem;color:var(--text-muted)}
.hero-badge .dot{width:6px;height:6px;background:var(--blue);border-radius:50%}
.hero h1{font-size:clamp(2.5rem,5.5vw,4.5rem);font-weight:900;letter-spacing:-.04em;line-height:1.08;margin-bottom:2rem;color:var(--white)}
.hero h1 .accent{color:var(--blue-dim);text-shadow:0 0 30px rgba(174,198,255,.3)}
.hero p{color:var(--text-muted);font-size:1.05rem;max-width:540px;margin-bottom:2.5rem;line-height:1.7}
.hero-buttons{display:flex;gap:1rem}
.hero-visual{position:relative}
.hero-glow{position:absolute;inset:0;background:rgba(0,112,243,.18);filter:blur(120px);border-radius:50%;transition:background .7s}
.hero-visual:hover .hero-glow{background:rgba(0,112,243,.28)}
.hero-image-wrap{position:relative;aspect-ratio:1;background:var(--surface-mid);border:1px solid var(--border);overflow:hidden}
.hero-image-wrap img{width:100%;height:100%;object-fit:cover;opacity:.6}
.hero-overlay{position:absolute;bottom:2rem;left:2rem;padding:1.5rem;background:rgba(0,0,0,.8);backdrop-filter:blur(12px);border-left:2px solid var(--blue)}
.hero-overlay .label{font-size:.6875rem;color:var(--blue-dim);letter-spacing:.2em;font-weight:700;text-transform:uppercase;margin-bottom:.5rem}
.hero-overlay .title{font-size:1.25rem;font-weight:700;letter-spacing:-.02em;color:var(--white)}

/* ---- Stats ---- */
.stats{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--surface-low)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;padding:3rem 0}
.stat-item .number{font-size:2.5rem;font-weight:900;letter-spacing:-.04em;color:var(--white)}
.stat-item .label{font-size:.6875rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.15em;font-weight:700;margin-top:.25rem}

/* ---- Services ---- */
.services{padding:8rem 0}
.section-label{font-size:.6875rem;color:var(--blue-dim);font-weight:700;letter-spacing:.3em;text-transform:uppercase;margin-bottom:1rem}
.section-title{font-size:2.25rem;font-weight:900;letter-spacing:-.04em;color:var(--white);margin-bottom:5rem}
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid var(--border)}
.service-card{background:var(--bg);padding:2.5rem;transition:transform .25s cubic-bezier(.4,0,.2,1)}
.service-card:hover{transform:translateY(-4px)}
.service-card .icon{font-size:1.75rem;color:var(--blue-dim);margin-bottom:2rem;display:block;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:rgba(0,112,243,.08);border-radius:8px}
.service-card h3{font-size:1.2rem;font-weight:700;color:var(--white);margin-bottom:1rem;letter-spacing:-.02em}
.service-card p{font-size:.875rem;color:var(--text-muted);line-height:1.7;margin-bottom:2rem}
.service-card .link{font-size:.6875rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--white);display:inline-flex;align-items:center;gap:.5rem;transition:color .2s}
.service-card:hover .link{color:var(--blue-dim)}
.service-card .link svg{width:14px;height:14px;transition:transform .2s}
.service-card:hover .link svg{transform:translateX(4px)}

/* ---- Process ---- */
.process{background:var(--surface-low);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:8rem 0}
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:4rem}
.process-step{position:relative}
.process-step .bg-number{position:absolute;top:-.75rem;left:-.25rem;font-size:8rem;font-weight:900;color:rgba(255,255,255,.03);line-height:1;user-select:none;pointer-events:none}
.process-step .content{position:relative;z-index:1}
.process-step h3{font-size:1.5rem;font-weight:700;color:var(--white);margin-bottom:1.5rem;letter-spacing:-.02em}
.process-step p{color:var(--text-muted);font-size:.95rem;line-height:1.7}

/* ---- Testimonials ---- */
.testimonials{padding:8rem 0}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.testimonial-card{padding:2rem;border:1px solid var(--border);background:var(--surface-mid);transition:border-color .3s}
.testimonial-card:hover{border-color:rgba(0,112,243,.3)}
.testimonial-card blockquote{font-size:1.1rem;font-style:italic;line-height:1.7;margin-bottom:2rem;color:var(--text)}
.testimonial-author{display:flex;align-items:center;gap:1rem}
.testimonial-avatar{width:48px;height:48px;background:var(--surface-high);border:1px solid var(--border);overflow:hidden}
.testimonial-avatar img{width:100%;height:100%;object-fit:cover}
.testimonial-name{font-size:.875rem;font-weight:700;color:var(--white)}
.testimonial-role{font-size:.6875rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;margin-top:.125rem}

/* ---- CTA ---- */
.cta{padding:0 0 8rem}
.cta-box{background:var(--blue);padding:6rem 4rem;text-align:center;position:relative;overflow:hidden}
.cta-box .glow{position:absolute;top:-12rem;right:-12rem;width:24rem;height:24rem;background:rgba(255,255,255,.1);filter:blur(100px);transition:transform .5s}
.cta-box:hover .glow{transform:scale(1.1)}
.cta-box h2{font-size:clamp(2rem,4vw,3.5rem);font-weight:900;letter-spacing:-.04em;color:var(--white);margin-bottom:2rem;position:relative;z-index:1}
.cta-box p{color:rgba(255,255,255,.8);font-size:1.05rem;max-width:640px;margin:0 auto 3rem;position:relative;z-index:1}
.btn-cta{background:#fff;color:#000;padding:1.125rem 3rem;font-weight:900;font-size:.8125rem;text-transform:uppercase;letter-spacing:.2em;transition:background .2s;position:relative;z-index:1}
.btn-cta:hover{background:#f0f0f0}

/* ---- Contact ---- */
.contact{padding:8rem 0;border-top:1px solid var(--border)}
.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:start}
.contact-info h2{font-size:2.25rem;font-weight:900;letter-spacing:-.04em;color:var(--white);margin-bottom:1.5rem}
.contact-info p{color:var(--text-muted);font-size:1rem;line-height:1.7;margin-bottom:2rem;max-width:480px}
.contact-info .email-link{display:inline-flex;align-items:center;gap:.75rem;color:var(--blue-dim);font-size:1.1rem;font-weight:600;transition:color .2s}
.contact-info .email-link:hover{color:var(--white)}
.contact-form{display:flex;flex-direction:column;gap:1rem}
.contact-form input,.contact-form textarea{background:var(--surface-mid);border:1px solid var(--border);color:var(--text);padding:1rem;font-size:.875rem;font-family:inherit;outline:none;transition:border-color .2s}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--blue)}
.contact-form textarea{min-height:140px;resize:vertical}
.contact-form .btn-primary{align-self:flex-start}

/* ---- Footer ---- */
.footer{border-top:1px solid rgba(255,255,255,.06);padding:5rem 0 0;background:var(--bg)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:3rem}
.footer-brand{font-size:1.25rem;font-weight:700;letter-spacing:-.04em;color:var(--white);margin-bottom:1.5rem}
.footer-brand-desc{color:#666;font-size:.875rem;line-height:1.6}
.footer-heading{color:var(--white);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.15em;margin-bottom:1.5rem}
.footer-links li+li{margin-top:1rem}
.footer-links a{color:#555;font-size:.875rem;transition:color .2s}
.footer-links a:hover{color:var(--blue-dim)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:5rem;padding:2rem 0;border-top:1px solid rgba(255,255,255,.06)}
.footer-bottom-text{color:#555;font-size:.8125rem}
.footer-bottom-links{display:flex;gap:2rem}
.footer-bottom-links a{color:#555;font-size:.8125rem;transition:color .2s}
.footer-bottom-links a:hover{color:#fff}

/* ---- Responsive ---- */
@media(max-width:1024px){
  .hero{grid-template-columns:1fr;text-align:center}
  .hero p{margin-left:auto;margin-right:auto}
  .hero-buttons{justify-content:center}
  .hero-visual{max-width:500px;margin:0 auto}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:1fr;gap:3rem}
  .testimonials-grid{grid-template-columns:1fr}
  .contact-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:768px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:rgba(0,0,0,.95);backdrop-filter:blur(20px);padding:2rem;gap:1.5rem}
  .hero{padding:8rem 0 3rem}
  .hero h1{font-size:2.25rem}
  .services-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cta-box{padding:3rem 2rem}
  .footer-grid{grid-template-columns:1fr}
}