:root{
  --bg:#ffffff;
  --surface:#ffffff;
  --muted:#6b7280;
  --text:#0f172a;
  --primary:linear-gradient(90deg,#0ea5e9,#3b82f6);
  --primary-color:#0ea5e9;
  --link-color:#0ea5e9;
  --link-hover:#2563eb;
  --glass: rgba(14,165,233,0.06);
  --card-shadow: 0 8px 24px rgba(16,24,40,0.06);
}
:root[data-theme='dark']{
  --bg:#071029;
  --surface:#0b1220;
  --muted:#9ca3af;
  --text:#e6eef8;
  --primary-color:#3b82f6;
  --link-color:#3b82f6;
  --link-hover:#60a5fa;
  --glass: rgba(59,130,246,0.06);
  --card-shadow: 0 10px 30px rgba(2,6,23,0.6);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;font-family:Inter,system-ui,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;scroll-behavior:smooth;transition:background .35s,color .35s
}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.site-header{position:sticky;top:0;backdrop-filter: blur(6px);z-index:40;background:linear-gradient(180deg,rgba(255,255,255,0.6),rgba(255,255,255,0));box-shadow:0 1px 0 rgba(16,24,40,0.04)}
:root[data-theme='dark'] .site-header{background:linear-gradient(180deg,rgba(7,16,41,0.6),transparent)}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text)}
.logo-mark{width:46px;height:46px;border-radius:10px;background:var(--primary-color);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}
.brand{font-weight:700;letter-spacing:1px}
.sub{font-size:12px;color:var(--muted)}
.nav{margin-left:auto}
.nav ul{display:flex;gap:18px;list-style:none;margin:0;padding:0}
.nav a{color:var(--text);text-decoration:none;padding:8px 6px;border-radius:8px;transition:all .15s}
.nav a:hover{background:var(--glass);transform:translateY(-2px)}

/* Global link colors (theme-aware) */
a, a:link, a:visited{
  color:var(--link-color);
  text-decoration:underline dotted 1px;
}
a:hover, a:focus{
  color:var(--link-hover);
  text-decoration:underline;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:10px;text-decoration:none;border:1px solid transparent;cursor:pointer}
.btn{text-decoration:none}
.btn, .btn *{text-decoration:none}
.btn-primary{background:var(--primary-color);color:#fff;border:none;box-shadow:var(--card-shadow)}
.btn-primary{color:#fff !important}
.btn-outline{background:transparent;border:1px solid rgba(15,23,42,0.08);color:var(--link-color)}
.btn-outline:hover{color:var(--link-hover)}
.btn-primary:hover{transform:translateY(-3px)}
.btn-ghost{background:transparent;border:1px solid rgba(15,23,42,0.06)}
.btn-outline{background:transparent;border:1px solid rgba(15,23,42,0.08)}
.btn-lg{padding:12px 20px}
.hamburger{display:none;background:transparent;border:none;font-size:20px}

.hero{padding:56px 0}
.hero-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
.eyebrow{color:var(--primary-color);font-weight:600;margin:0}
h1{font-size:2.1rem;margin:8px 0 12px}
.lead{color:var(--muted);max-width:56ch}
.hero-ctas{margin-top:18px;display:flex;gap:12px}
.stats{display:flex;gap:18px;margin-top:26px}
.stat{background:var(--surface);padding:12px 14px;border-radius:10px;box-shadow:var(--card-shadow);min-width:110px;text-align:center}
.stat .num{display:block;font-size:1.1rem;color:var(--primary-color)}
.hero-media{display:flex;justify-content:center}
.hero-media-placeholder{width:100%;max-width:460px;height:320px;border-radius:16px;background:linear-gradient(180deg,rgba(59,130,246,0.12),rgba(14,165,233,0.06));box-shadow:var(--card-shadow);position:relative;overflow:hidden}
/* removed decorative pseudo-element to keep placeholder clean */

.section{padding:56px 0}
.section-label{color:var(--primary-color);font-weight:700;margin-bottom:8px}
.section-lead{color:var(--muted);max-width:78ch}
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:18px}
.card{background:var(--surface);padding:18px;border-radius:12px;box-shadow:var(--card-shadow);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-6px)}
/* Ensure card text is visible in dark mode (override Bootstrap defaults) */
.card{color:var(--text)}
.card h2,.card h3,.card h4{color:var(--text);margin:0 0 8px}
.card p,.card .category{color:var(--muted)}
.service-card .icon{color:var(--primary-color);font-size:28px;margin-bottom:8px}
.feature h3{margin:0 0 8px}

.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:18px}
.service-card .icon{font-size:28px;margin-bottom:8px}

.tech-grid{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.tech{background:var(--glass);padding:8px 12px;border-radius:999px;color:var(--primary-color);font-weight:600}

.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}

.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.project-card{overflow:hidden}
.project-body{padding:14px}
.category{display:inline-block;font-size:12px;color:var(--muted);margin-bottom:8px}

.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step{background:var(--surface);padding:16px;border-radius:12px;text-align:center}
.step .num{display:block;font-weight:800;color:var(--primary-color);font-size:20px}

.contact-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px}
.contact-form .field-row{display:flex;gap:12px}
label{display:block;font-size:14px;color:var(--muted)}
input,textarea,select{width:100%;padding:10px;margin-top:6px;border-radius:8px;border:1px solid rgba(15,23,42,0.06);background:transparent;color:var(--text)}
.form-actions{display:flex;gap:12px;align-items:center;margin-top:12px}
.form-success{color:green}

.cta-hero{background:linear-gradient(90deg,rgba(14,165,233,0.1),rgba(59,130,246,0.07));padding:36px;border-radius:12px;margin:28px 0}
.cta-grid{display:flex;justify-content:space-between;align-items:center}

.site-footer{padding:40px 0 20px;background:transparent}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.logo-footer{font-weight:800}
.bottom-footer{display:flex;justify-content:space-between;padding-top:18px;border-top:1px solid rgba(15,23,42,0.04);margin-top:18px}

/* responsive */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr 360px}
  .features{grid-template-columns:repeat(2,1fr)}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .projects-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .nav ul{display:none}
  .hamburger{display:block}
  .nav-actions .btn-primary{display:none}
  .hero-grid{grid-template-columns:1fr;gap:24px}
  h1{font-size:1.6rem}
  .container{padding:0 16px}
  .features{grid-template-columns:1fr}
  .services-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr}
  .projects-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .cta-grid{flex-direction:column;gap:12px}

  /* Mobile nav overlay */
  .nav{
    position:fixed;top:72px;right:0;left:0;background:var(--surface);padding:20px;display:none;z-index:50;border-top:1px solid rgba(255,255,255,0.02);
  }
  .nav.open{display:block}
  .nav ul{display:flex;flex-direction:column;gap:12px}
  .nav a{padding:12px 8px}

  /* Stats wrap for small screens */
  .stats{flex-wrap:wrap}
  .stat{min-width:calc(50% - 12px)}

  /* Footer stack */
  .footer-grid{grid-template-columns:1fr}
  .bottom-footer{flex-direction:column;gap:8px}
}

/* Mobile fixes: prevent horizontal overflow and restore heading readability */
html,body{max-width:100%;overflow-x:hidden}

/* Ensure headings keep readable sizes and theme color across Bootstrap resets */
h1,h2,h3,h4,h5,h6{color:var(--text) !important;line-height:1.15}

@media (max-width:480px){
  h1{font-size:1.4rem}
  h2{font-size:1.15rem}
  h3{font-size:1rem}
  .hero .lead{font-size:0.95rem}
  .logo-text{max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
}

/* Constrain large fixed-width hero grid at mid-breakpoints */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr}
}

/* fade-in animations */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.active{opacity:1;transform:none}

/* Remove underline from all links while preserving color and focus behavior */
a, a:link, a:visited, a:hover, a:focus {
  text-decoration: none !important;
}

/* Footer spacing improvements: prevent cramped copyright/links */
.site-footer .bottom-footer{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
  align-items:center;
  padding-top:20px;
  padding-bottom:18px;
  border-top:1px solid rgba(15,23,42,0.04);
  margin-top:18px;
}
.site-footer .bottom-footer p{margin:0;display:inline-block}
.site-footer .bottom-footer a{margin-left:8px}

@media (max-width:720px){
  .site-footer .bottom-footer{justify-content:center;text-align:center}
  .site-footer .bottom-footer p{width:100%}
}