:root{
  --bg:#05060f;
  --bg-2:#0a0d1e;
  --card:rgba(17,22,42,.55);
  --card-hover:rgba(20,27,52,.72);
  --border:rgba(255,255,255,.07);
  --border-strong:rgba(255,255,255,.14);
  --txt:#eef1fa;
  --txt-soft:#98a2b8;
  --txt-dim:#626b82;
  --accent:#5b8cff;
  --accent-2:#8a5cff;
  --cyan:#22d3ee;
  --grad:linear-gradient(135deg,#5b8cff 0%,#8a5cff 45%,#22d3ee 100%);
  --grad-anim:linear-gradient(120deg,#5b8cff,#8a5cff,#22d3ee,#5b8cff);
  --shadow:0 12px 48px rgba(0,0,0,.5);
  --glow:0 0 44px rgba(91,140,255,.35);
  --glow-cyan:0 0 44px rgba(34,211,238,.3);
  --radius:20px;
  --r-sm:12px;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);background:var(--bg);color:var(--txt);
  line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  min-height:100vh;
}
a{color:var(--txt);text-decoration:none}
a:hover{color:var(--cyan)}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px;position:relative;z-index:2}
::selection{background:rgba(91,140,255,.35);color:#fff}

/* ============ SCROLL PROGRESS ============ */
#scrollbar{position:fixed;top:0;left:0;height:2px;width:0;background:var(--grad);z-index:100;box-shadow:0 0 12px rgba(91,140,255,.7)}

/* ============ BACKGROUND LAYERS ============ */
.bg-canvas{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.orb{position:absolute;border-radius:50%;filter:blur(95px);opacity:.5;will-change:transform}
.orb-1{width:620px;height:620px;background:radial-gradient(circle,#5b8cff,transparent 68%);top:-160px;left:-140px;animation:drift1 26s ease-in-out infinite}
.orb-2{width:560px;height:560px;background:radial-gradient(circle,#8a5cff,transparent 68%);top:14%;right:-180px;animation:drift2 32s ease-in-out infinite}
.orb-3{width:520px;height:520px;background:radial-gradient(circle,#22d3ee,transparent 70%);bottom:-140px;left:20%;animation:drift3 38s ease-in-out infinite}
.orb-4{width:420px;height:420px;background:radial-gradient(circle,rgba(138,92,255,.75),transparent 70%);bottom:4%;right:12%;animation:drift1 30s ease-in-out infinite reverse}
@keyframes drift1{0%,100%{transform:translate(0,0)}50%{transform:translate(60px,40px)}}
@keyframes drift2{0%,100%{transform:translate(0,0)}50%{transform:translate(-70px,50px)}}
@keyframes drift3{0%,100%{transform:translate(0,0)}50%{transform:translate(50px,-60px)}}
.grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);background-size:54px 54px;mask-image:radial-gradient(ellipse at 50% 0%,#000 25%,transparent 74%)}
#stars{position:absolute;inset:0;z-index:0}

/* ============ CURSOR GLOW ============ */
#cursorGlow{position:fixed;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(91,140,255,.10),transparent 65%);pointer-events:none;z-index:1;transform:translate(-50%,-50%);transition:opacity .3s;opacity:0}
@media(hover:hover) and (pointer:fine){#cursorGlow{opacity:1}}

/* ============ HEADER ============ */
header{position:sticky;top:0;z-index:90;backdrop-filter:blur(20px) saturate(160%);-webkit-backdrop-filter:blur(20px) saturate(160%);background:rgba(5,6,15,.55);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{font-weight:800;font-size:19px;letter-spacing:-.4px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:flex;align-items:center;gap:9px}
.logo .mark{width:30px;height:30px;border-radius:9px;background:var(--grad);display:flex;align-items:center;justify-content:center;box-shadow:var(--glow);flex:none}
.logo .mark svg{width:16px;height:16px;color:#fff}
.logo .dot{color:var(--txt);-webkit-text-fill-color:var(--txt)}
.nav-links{display:flex;gap:6px;font-size:14px;align-items:center}
.nav-links a{color:var(--txt-soft);font-weight:500;padding:8px 14px;border-radius:10px;transition:background .15s,color .15s}
.nav-links a:hover{color:var(--txt);background:rgba(255,255,255,.06)}
.theme-btn,.menu-btn{cursor:pointer;background:var(--card);border:1px solid var(--border);border-radius:11px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--txt);transition:border .15s,background .15s}
.theme-btn:hover,.menu-btn:hover{border-color:var(--border-strong);background:var(--card-hover)}
.menu-btn{display:none}
@media(max-width:760px){
  .nav-links{display:none}
  .menu-btn{display:flex}
  .nav-links.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;background:rgba(7,9,18,.97);padding:16px 24px;border-bottom:1px solid var(--border);gap:6px;backdrop-filter:blur(20px)}
  .nav-links.open a{padding:12px 14px;width:100%}
  .nav-links.open .theme-btn{margin-top:6px}
}

/* ============ HERO ============ */
.hero{padding:80px 0 40px;text-align:center;position:relative}
.hero .eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:99px;background:var(--card);border:1px solid var(--border);font-size:13px;color:var(--txt-soft);margin-bottom:22px;backdrop-filter:blur(10px)}
.hero .eyebrow .badge{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}
.hero h1{font-size:clamp(32px,6vw,58px);font-weight:850;letter-spacing:-1.8px;line-height:1.06;margin-bottom:18px}
.hero h1 .grad{background:var(--grad-anim);background-size:300% 300%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:gradshift 8s ease infinite}
@keyframes gradshift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.hero p{font-size:17px;color:var(--txt-soft);max-width:640px;margin:0 auto;line-height:1.7}
.hero .search{max-width:540px;margin:28px auto 0;position:relative}
.hero .search input{width:100%;padding:16px 22px 16px 50px;border-radius:16px;border:1px solid var(--border-strong);background:var(--card);color:var(--txt);font-size:15px;backdrop-filter:blur(12px);transition:border .2s,box-shadow .2s}
.hero .search input::placeholder{color:var(--txt-dim)}
.hero .search input:focus{outline:none;border-color:var(--accent);box-shadow:var(--glow)}
.hero .search .icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--cyan);display:flex}

/* ============ TRUST STATS ============ */
.trust{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:34px}
.trust .stat{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:15px 26px;text-align:center;backdrop-filter:blur(12px);min-width:140px}
.trust .stat .n{font-size:24px;font-weight:850;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.trust .stat .l{font-size:12px;color:var(--txt-soft);margin-top:2px}

/* ============ FEATURES ============ */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;padding:10px 0 40px}
.feature{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;backdrop-filter:blur(14px);position:relative;overflow:hidden;transition:transform .2s,border-color .2s}
.feature:hover{transform:translateY(-4px);border-color:var(--border-strong)}
.feature .fi{width:46px;height:46px;border-radius:13px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px;box-shadow:var(--glow)}
.feature .fi svg{width:22px;height:22px}
.feature h3{font-size:15px;margin-bottom:6px;letter-spacing:-.2px}
.feature p{font-size:13px;color:var(--txt-soft)}

/* ============ SECTION LABEL ============ */
.sec-label{font-size:12px;text-transform:uppercase;letter-spacing:2.5px;color:var(--txt-dim);margin:48px 0 18px;display:flex;align-items:center;gap:14px;font-weight:600}
.sec-label::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--border-strong),transparent)}

/* ============ TOOL GRID ============ */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:16px;padding:0 0 30px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;position:relative;overflow:hidden;backdrop-filter:blur(14px);
  transition:transform .22s cubic-bezier(.2,.7,.3,1.2),border-color .22s,box-shadow .22s,background .22s;
  display:block;will-change:transform;
}
.card::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:0;transition:opacity .3s;border-radius:inherit}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-5px) scale(1.01);border-color:transparent;box-shadow:var(--shadow);background:var(--card-hover)}
.card:hover::before{opacity:.05}
.card:hover::after{opacity:1}
.card .ico{width:48px;height:48px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--txt);position:relative;z-index:1;transition:all .25s}
.card:hover .ico{color:#fff;background:var(--grad);border-color:transparent;box-shadow:var(--glow)}
.card .ico svg{width:23px;height:23px}
.card h3{font-size:16px;margin-bottom:6px;letter-spacing:-.2px;position:relative;z-index:1}
.card p{font-size:13px;color:var(--txt-soft);position:relative;z-index:1}
.tag{display:inline-block;font-size:11px;font-weight:600;padding:3px 11px;border-radius:99px;margin-top:14px;position:relative;z-index:1;background:rgba(91,140,255,.14);color:#9db8ff;border:1px solid rgba(91,140,255,.25);transition:all .2s}
.card:hover .tag{background:rgba(91,140,255,.22);color:#bcd2ff}
.tag.health{background:rgba(34,211,238,.13);color:#7ce7f7;border-color:rgba(34,211,238,.25)}
.tag.general{background:rgba(138,92,255,.14);color:#c2acff;border-color:rgba(138,92,255,.28)}

/* ============ TOOL PAGE ============ */
.crumbs{font-size:13px;color:var(--txt-dim);padding:24px 0 0}
.crumbs a{color:var(--txt-dim)}
.crumbs a:hover{color:var(--cyan)}
.tool-head{padding:46px 0 8px;text-align:center}
.tool-ico{width:64px;height:64px;border-radius:18px;background:var(--grad);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;color:#fff;box-shadow:var(--glow);animation:floaty 5s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.tool-ico svg{width:30px;height:30px}
.tool-head h1{font-size:clamp(26px,4.5vw,42px);font-weight:850;letter-spacing:-1.2px;margin-bottom:14px}
.tool-head h1 .grad{background:var(--grad-anim);background-size:300% 300%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:gradshift 8s ease infinite}
.tool-head .sub{color:var(--txt-soft);max-width:660px;margin:0 auto;font-size:15.5px}

.layout{display:grid;grid-template-columns:1fr;gap:22px;padding:30px 0 30px}
@media(min-width:960px){.layout{grid-template-columns:minmax(0,1fr) 330px}}
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(18px);overflow:hidden;position:relative}
.panel::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);opacity:.7}
.calc{padding:28px}
.side{padding:24px;align-self:start}
.side h3{font-size:14px;margin-bottom:12px;color:var(--txt);text-transform:uppercase;letter-spacing:1.5px;font-size:12px;color:var(--txt-dim)}
.side ul{list-style:none}
.side li{padding:9px 0;border-bottom:1px solid var(--border);font-size:13.5px}
.side li:last-child{border-bottom:none}
.side a{color:var(--txt-soft)}
.side a:hover{color:var(--cyan)}

/* ============ FORM ============ */
.field{margin-bottom:20px}
.field label{display:flex;justify-content:space-between;font-size:13px;font-weight:600;margin-bottom:9px;color:var(--txt)}
.field .hint{font-size:12px;color:var(--txt-dim);font-weight:400}
input,select{
  width:100%;padding:13px 15px;font-size:15px;border-radius:var(--r-sm);
  border:1px solid var(--border-strong);background:rgba(8,11,24,.65);color:var(--txt);
  transition:border .18s,box-shadow .18s;
}
input:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,140,255,.18)}
select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2398a2b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;cursor:pointer}
input[type=range]{width:100%;-webkit-appearance:none;appearance:none;height:6px;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--cyan));outline:none;padding:0;border:none;margin-top:12px;cursor:pointer}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:#fff;border:4px solid var(--accent);box-shadow:0 0 16px rgba(91,140,255,.7);cursor:pointer;transition:transform .15s}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.15)}
input[type=range]::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:#fff;border:4px solid var(--accent);box-shadow:0 0 16px rgba(91,140,255,.7);cursor:pointer}
.range-val{font-size:12px;color:var(--cyan);font-weight:600}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:520px){.row{grid-template-columns:1fr}}

.btn{
  display:block;width:100%;padding:16px;font-size:15px;font-weight:700;border:none;border-radius:14px;
  background:var(--grad);background-size:200% 200%;color:#fff;cursor:pointer;position:relative;overflow:hidden;
  box-shadow:0 8px 28px rgba(91,140,255,.4);transition:transform .15s,box-shadow .15s,background-position .3s;
  letter-spacing:.2px;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 36px rgba(91,140,255,.6);background-position:100% 50%}
.btn:active{transform:translateY(0)}
.btn::after{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:rgba(255,255,255,.25);transform:translate(-50%,-50%);transition:width .5s,height .5s}
.btn:active::after{width:400px;height:400px}

/* ============ RESULT ============ */
.result{margin-top:24px;padding:24px;border-radius:18px;background:rgba(8,11,24,.55);border:1px solid var(--border-strong);display:none;position:relative;overflow:hidden}
.result.show{display:block;animation:pop .4s cubic-bezier(.2,.8,.3,1.2)}
.result::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad)}
.result .big{font-size:34px;font-weight:850;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.6px;line-height:1.2}
.result .lbl{font-size:12px;color:var(--txt-dim);text-transform:uppercase;letter-spacing:1.2px;margin-bottom:5px}
.result .line{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px dashed var(--border);font-size:14px;color:var(--txt-soft)}
.result .line:last-child{border-bottom:none}
.result .line span:last-child{color:var(--txt);font-weight:600}
@keyframes pop{0%{transform:scale(.96) translateY(6px);opacity:0}100%{transform:scale(1) translateY(0);opacity:1}}

/* ============ CONTENT ============ */
.content{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;margin:0 0 44px;backdrop-filter:blur(14px)}
.content h2{font-size:21px;margin:26px 0 12px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:inline-block;letter-spacing:-.4px}
.content h2:first-child{margin-top:0}
.content p{font-size:15px;color:var(--txt-soft);margin-bottom:14px}
.content ul,.content ol{margin:0 0 14px 22px;font-size:15px;color:var(--txt-soft)}
.content li{margin-bottom:8px}
.content strong{color:var(--txt)}

/* ============ AD ============ */
.ad-unit{margin:26px 0;min-height:60px;border-radius:16px;overflow:hidden;border:1px solid var(--border)}

/* ============ FOOTER ============ */
footer{border-top:1px solid var(--border);background:rgba(5,6,15,.7);padding:38px 0;margin-top:40px;backdrop-filter:blur(14px)}
footer .foot{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;font-size:13px;color:var(--txt-dim)}
footer a{color:var(--txt-dim)}
footer a:hover{color:var(--cyan)}

/* ============ REVEAL (staggered) ============ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.visible{opacity:1;transform:none}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar{width:11px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#1e2540;border-radius:99px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#2c355a}

/* ============ LIGHT THEME ============ */
body.light{
  --bg:#eef1f8;--bg-2:#fff;--card:rgba(255,255,255,.72);--card-hover:rgba(255,255,255,.92);
  --border:rgba(15,23,42,.08);--border-strong:rgba(15,23,42,.16);
  --txt:#0f172a;--txt-soft:#475569;--txt-dim:#94a3b8;
  --accent:#4f7cff;--accent-2:#7a5cff;--cyan:#0891b2;
  --shadow:0 12px 40px rgba(15,23,42,.10);
  --glow:0 0 40px rgba(79,124,255,.25);
}
body.light .orb{opacity:.18}
body.light .grid-overlay{background-image:linear-gradient(rgba(15,23,42,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(15,23,42,.04) 1px,transparent 1px)}
body.light .tag{background:rgba(79,124,255,.12);color:#3157c9;border-color:rgba(79,124,255,.3)}
body.light header{background:rgba(238,241,248,.7)}
body.light .card .ico{background:rgba(15,23,42,.05)}
body.light input,body.light select{background:rgba(255,255,255,.9)}
body.light .result{background:rgba(255,255,255,.7)}
body.light footer{background:rgba(238,241,248,.8)}

/* ============ REDUCED MOTION ============ */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important}
  .orb{animation:none}
}