/* Theme Variables */
/* Dark Theme (Default) */
:root,
[data-theme="dark"]{
  --bg:#0b0e1a;
  --panel:#0e1324;
  --text:#e9edff;
  --muted:#a7b0d4;
  --brand1:#667eea;
  --brand2:#764ba2;
  --accent:#ff6b35;
  --border:rgba(255,255,255,0.08);
  --primary:#667eea;
}

/* Light Theme */
[data-theme="light"]{
  --bg:#ffffff;
  --panel:#f8f9fa;
  --text:#1a1a2e;
  --muted:#6c757d;
  --brand1:#667eea;
  --brand2:#764ba2;
  --accent:#ff6b35;
  --border:rgba(0,0,0,0.1);
  --primary:#667eea;
}

/* Theme Toggle Button */
.theme-toggle{
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 14px;
  cursor:pointer;
  font-size:18px;
  transition:all 0.3s ease;
  display:flex;
  align-items:center;
  justify-content:center;
  min-width:48px;
  position:relative;
  font-weight:700;
}
.theme-toggle:hover{
  background:rgba(255,255,255,.09);
  transform:scale(1.05);
}
.theme-toggle:active{
  transform:scale(0.95);
}
.theme-toggle:hover::after{
  content:attr(data-tooltip);
  position:absolute;
  top:calc(100% + 8px);
  right:0;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:8px;
  padding:6px 12px;
  font-size:12px;
  white-space:nowrap;
  z-index:1000;
  box-shadow:0 4px 12px rgba(0,0,0,0.3);
}
.theme-icon{
  display:block;
  line-height:1;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle{
  display:none;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 14px;
  cursor:pointer;
  font-size:24px;
  transition:all 0.3s ease;
  align-items:center;
  justify-content:center;
  min-width:48px;
  font-weight:700;
}
.mobile-menu-toggle:hover{
  background:rgba(255,255,255,.09);
}


*{box-sizing:border-box}
html,body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  line-height:1.6;
  transition:background-color 0.3s ease, color 0.3s ease;
}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:24px}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 24px;
  border-bottom:1px solid var(--border);
  background:linear-gradient(135deg,rgba(102,126,234,.08),rgba(118,75,162,.08));
  transition:background 0.3s ease, border-color 0.3s ease;
}
.nav nav{
  display:flex;
  align-items:center;
  gap:8px;
}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:36px;height:36px;object-fit:contain;border-radius:6px}
.brand h1{font-size:18px;margin:0;font-weight:800;letter-spacing:.3px}
.nav a.btn{
  padding:10px 14px;
  border-radius:10px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.04);
  font-weight:700;
  transition:background 0.3s ease, border-color 0.3s ease;
}
.nav a.btn:hover{background:rgba(255,255,255,.09)}

/* Mobile Navigation */
@media (max-width: 768px){
  .mobile-menu-toggle{
    display:flex;
  }
  .nav nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:var(--panel);
    border-bottom:1px solid var(--border);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    display:none;
    box-shadow:0 8px 24px rgba(0,0,0,0.3);
  }
  .nav nav.active{
    display:flex;
  }
  .nav{
    position:relative;
  }
  .nav a.btn{
    border-radius:0;
    border-left:none;
    border-right:none;
    border-top:none;
    padding:16px 24px;
  }
  .nav .theme-toggle{
    border-radius:0;
    border-left:none;
    border-right:none;
    border-top:none;
    padding:16px 24px;
  }
}

.hero{padding:60px 24px 24px;text-align:center}
.hero h2{font-size:42px;line-height:1.15;margin:0 0 10px}
.hero p{color:var(--muted);max-width:760px;margin:8px auto 0}
.cta{display:flex;gap:12px;justify-content:center;margin-top:22px;flex-wrap:wrap}
.btn-primary{background:linear-gradient(135deg,var(--brand1),var(--brand2));border:1px solid var(--border);color:#fff;padding:12px 18px;border-radius:12px;font-weight:800}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 28px rgba(102,126,234,.35)}
.btn-ghost{border:1px solid var(--border);padding:12px 18px;border-radius:12px;color:var(--text)}
.section{padding:34px 24px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
  transition:background 0.3s ease, border-color 0.3s ease;
}
.card h3{margin:4px 0 8px}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--border);color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.3px}
.features{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-top:12px}
.feat{background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:14px;padding:14px}
.footer{border-top:1px solid var(--border);padding:28px 24px;color:var(--muted);text-align:center}
.hero .sub{display:inline-block;margin-top:8px}
img.responsive{max-width:100%;height:auto;border-radius:12px;border:1px solid var(--border)}
.kicker{color:var(--accent);font-weight:800;letter-spacing:.4px;text-transform:uppercase;font-size:12px}
.note{color:var(--muted);font-size:14px}
.list{margin:0;padding-left:18px}
.list li{margin:6px 0}