:root{
	--bg:#0f1724;
	--card:#0b1220;
	--muted:#9aa4b2;
	--accent:#1e90ff;
	--glass: rgba(255,255,255,0.04);
}
*{box-sizing:border-box;font-family:Inter,Segoe UI,Helvetica,Arial,sans-serif}
body{margin:0;background:linear-gradient(120deg,#071021 0%, #0f1724 50%, #07152a 100%);color:#e6eef8;min-height:100vh}
.container{max-width:980px;margin:40px auto;padding:0 18px}
.hero{text-align:center;padding:36px 12px;border-radius:12px;background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);backdrop-filter:blur(6px);box-shadow:0 8px 30px rgba(2,6,23,0.6)}
.hero h1{font-size:2.1rem;margin:0 0 6px;letter-spacing:0.4px}
.hero p{color:var(--muted);margin:0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin:26px 0}
.card{background:linear-gradient(180deg,rgba(255,255,255,0.02),var(--glass));border-radius:12px;padding:20px;box-shadow:0 10px 30px rgba(2,6,23,0.6);transition:transform .36s cubic-bezier(.2,.9,.2,1),box-shadow .36s;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.card:hover{transform:translateY(-8px) scale(1.01);box-shadow:0 20px 40px rgba(2,6,23,0.7)}
.btn{display:inline-block;background:linear-gradient(180deg,var(--accent),#0666d6);color:#fff;padding:10px 16px;border-radius:10px;text-decoration:none;box-shadow:0 8px 20px rgba(16,24,40,.35);transition:transform .15s ease,box-shadow .15s}
.btn:active{transform:scale(.98)}
.btn:focus{outline:2px solid rgba(30,144,255,.18);outline-offset:2px}
.link{display:inline-block;margin-left:12px;color:var(--muted);text-decoration:underline}
.actions{margin-top:14px}
.converter input[type=number]{width:100%;padding:10px;margin-top:8px;margin-bottom:8px;border-radius:8px;border:none;background:rgba(255,255,255,0.03);color:inherit}
.result{margin-top:12px}
form label{display:block;margin:10px 0}
form input,form textarea{width:100%;padding:10px;border-radius:8px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:inherit}
.foot{text-align:center;color:var(--muted);margin-top:24px}

/* reveal animation */
.reveal{opacity:0;transform:translateY(12px) scale(.995);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.9,.2,1)}
.reveal.visible{opacity:1;transform:none}

/* small floating accent */
@keyframes floaty{0%{transform:translateY(0)}50%{transform:translateY(-6px)}100%{transform:translateY(0)}}
.hero .float{display:inline-block;animation:floaty 6s ease-in-out infinite}

/* pulse for result */
.pulse{animation:pulse 700ms ease}
@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.06)}100%{transform:scale(1)}}

/* subtle gradient background animation */
body::before{content:"";position:fixed;inset:0;z-index:-1;opacity:.45;background:radial-gradient(800px 400px at 10% 10%, rgba(30,144,255,0.08), transparent 8%),radial-gradient(600px 300px at 90% 90%, rgba(58,200,255,0.06), transparent 6%)}

@media (max-width:640px){.hero h1{font-size:1.6rem}.container{margin:20px auto;padding:0 12px}}

@media(prefers-color-scheme:light){
	:root{--bg:#f6f8fb;--card:#ffffff;--muted:#586066;--accent:#0b6efd;--glass:rgba(0,0,0,0.03)}
	body{background:var(--bg);color:#111}
	.card{box-shadow:0 6px 18px rgba(16,24,40,.06)}
	.hero{box-shadow:0 6px 24px rgba(2,6,23,0.04)}
}

/* Navigation */
.nav{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;background:rgba(255,255,255,0.02);padding:8px 12px;border-radius:10px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--muted);text-decoration:none}
.logo svg{width:36px;height:36px}
.logo-img{width:48px;height:48px;object-fit:contain;border-radius:8px}
.nav-links{display:flex;gap:14px;align-items:center}

/* Animated brand color */
.brand{font-weight:800;font-size:1.05rem;display:inline-block;margin-left:4px;background:linear-gradient(90deg,#38c2ff,#7ef3c5,#ffb86b);background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:brandShift 6s linear infinite}
@keyframes brandShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}

/* Particles canvas */
#particles{position:fixed;inset:0;z-index:0;pointer-events:none}
.container{max-width:980px;margin:40px auto;padding:0 18px;position:relative;z-index:1}
.nav-links a{color:var(--muted);text-decoration:none;padding:6px 8px;border-radius:8px;transition:background .15s}
.nav-links a:hover{background:rgba(255,255,255,0.02)}

/* Hero enhancements */
.hero .kicker{display:inline-block;background:rgba(255,255,255,0.03);padding:6px 10px;border-radius:999px;color:var(--muted);font-size:.86rem;margin-bottom:10px}
.hero h1{display:flex;align-items:baseline;gap:12px;justify-content:center}
.hero p.lead{max-width:760px;margin:12px auto;color:var(--muted);font-size:1.02rem}

/* Feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:8px}
.feature{padding:16px;border-radius:12px;background:linear-gradient(180deg,rgba(255,255,255,0.01),transparent);box-shadow:inset 0 0 0 1px rgba(255,255,255,0.02);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}
.feature h4{margin:0 0 8px}
.feature p{margin:0;color:var(--muted)}

/* CTA */
.cta-row{display:flex;gap:12px;justify-content:center;align-items:center;margin-top:18px}
.btn.cta{padding:14px 20px;font-size:1rem;border-radius:12px}

/* Footer */
footer.foot{font-size:.92rem;color:var(--muted);padding:28px 0 40px;text-align:center}

/* Small utility */
.muted{color:var(--muted)}

/* ensure ripples don't overflow */
.btn{overflow:hidden}