/* ---- Light (Standard) ---- */
:root{
  --bg:#f4f6ff; --panel:rgba(255,255,255,.78); --line:rgba(15,18,45,.12);
  --txt:#141633; --muted:#5c6180; --acc:#7c5cff; --acc2:#00b8d9;
  --shadow:0 26px 60px rgba(40,44,110,.16);
  --glowA:rgba(124,92,255,.28); --glowB:rgba(0,184,217,.22);
  --dur:.5s;
}
/* ---- Dark ---- */
:root[data-theme=dark]{
  --bg:#0a0b14; --panel:rgba(255,255,255,.05); --line:rgba(255,255,255,.13);
  --txt:#eef0ff; --muted:#9599bb; --acc:#7c5cff; --acc2:#00e5ff;
  --shadow:0 30px 70px rgba(0,0,0,.6);
  --glowA:rgba(124,92,255,.4); --glowB:rgba(0,229,255,.28);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Space Grotesk',system-ui,sans-serif;color:var(--txt);background:var(--bg);
  min-height:100vh;transition:background var(--dur) ease, color var(--dur) ease;overflow-x:hidden}
body.noSmooth{transition:none!important}
body.noSmooth *{transition:none!important}
.glow{position:fixed;inset:0;pointer-events:none;background:
  radial-gradient(640px 380px at 14% 8%, var(--glowA), transparent 65%),
  radial-gradient(640px 380px at 88% 92%, var(--glowB), transparent 65%);
  transition:background var(--dur) ease;animation:drift 18s ease-in-out infinite alternate}
@keyframes drift{to{transform:scale(1.14) translate(22px,-18px)}}
code{background:rgba(124,92,255,.16);color:var(--acc);padding:2px 7px;border-radius:6px;font-size:13px}

/* Header */
.top{position:sticky;top:0;z-index:40;display:flex;justify-content:space-between;align-items:center;
  padding:18px clamp(16px,4vw,42px);background:var(--panel);border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px);transition:background var(--dur), border-color var(--dur)}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:.16em;font-size:15px;
  color:var(--txt);text-decoration:none}
.logo{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;color:#fff;
  background:linear-gradient(135deg,var(--acc),var(--acc2));box-shadow:0 10px 26px var(--glowA)}

.theme-wrap{display:flex;align-items:center;gap:14px}
.mode-label{font-size:13.5px;font-weight:600;min-width:44px;color:var(--muted)}
.theme-btn{border:none;background:none;cursor:pointer;padding:0}
.track{position:relative;display:flex;align-items:center;justify-content:space-between;
  width:96px;height:46px;padding:0 8px;border-radius:99px;background:rgba(124,92,255,.18);
  border:1px solid var(--line);transition:background var(--dur)}
:root[data-theme=dark] .track{background:rgba(0,229,255,.16)}
.icon{width:26px;height:26px;display:grid;place-items:center;z-index:2;transition:transform .5s cubic-bezier(.34,1.56,.64,1), opacity .4s}
.icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round}
.sun{color:#ffb703}
.moon{color:#9aa4ff;opacity:.45;transform:rotate(-90deg) scale(.7)}
:root[data-theme=dark] .sun{opacity:.45;transform:rotate(90deg) scale(.7)}
:root[data-theme=dark] .moon{opacity:1;transform:none}
.knob{position:absolute;left:4px;top:4px;width:36px;height:36px;border-radius:50%;
  background:linear-gradient(135deg,#fff,#ffe9b8);box-shadow:0 8px 20px rgba(0,0,0,.35);
  transition:transform .55s cubic-bezier(.34,1.56,.64,1), background .5s}
:root[data-theme=dark] .knob{transform:translateX(50px);
  background:linear-gradient(135deg,#2b2f55,#4b52a8)}
.theme-btn:hover .knob{box-shadow:0 10px 26px var(--glowA)}

/* Content */
.wrap{width:min(1040px,100%);margin:0 auto;padding:34px 16px 70px}
.hero{text-align:center;margin-bottom:34px;animation:up .7s cubic-bezier(.2,.8,.2,1) both}
.tag{font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--acc2);
  border:1px solid var(--line);padding:8px 16px;border-radius:99px;background:var(--panel)}
h1{font-size:clamp(34px,7vw,60px);letter-spacing:-.03em;margin:20px 0 12px}
h1 span{background:linear-gradient(90deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:16px;max-width:60ch;margin:0 auto}
@keyframes up{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
.btns{display:flex;gap:14px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.cta,.ghost{padding:15px 30px;border-radius:15px;font-family:inherit;font-weight:700;font-size:15px;
  cursor:pointer;transition:.35s cubic-bezier(.34,1.56,.64,1)}
.cta{border:none;color:#fff;background:linear-gradient(90deg,var(--acc),var(--acc2));
  box-shadow:0 16px 38px var(--glowA)}
.cta:hover{transform:translateY(-4px);box-shadow:0 22px 48px var(--glowA)}
.ghost{background:transparent;border:1px solid var(--line);color:var(--txt)}
.ghost:hover{transform:translateY(-4px);border-color:var(--acc2)}
.ghost.on{background:rgba(124,92,255,.16);border-color:var(--acc)}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin-bottom:24px}
.card{padding:26px;border-radius:22px;background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(16px);box-shadow:var(--shadow);transition:transform .45s cubic-bezier(.2,.8,.2,1),
  background var(--dur), border-color var(--dur), box-shadow var(--dur);
  animation:up .7s cubic-bezier(.2,.8,.2,1) both}
.card:nth-child(2){animation-delay:.08s}.card:nth-child(3){animation-delay:.16s}
.card:hover{transform:translateY(-8px);border-color:var(--acc)}
.ico{font-size:26px;display:block;margin-bottom:12px}
.card h3{font-size:19px;margin-bottom:9px}
.card p{color:var(--muted);font-size:14.4px;line-height:1.65}

.glass{background:var(--panel);border:1px solid var(--line);border-radius:24px;
  backdrop-filter:blur(18px);box-shadow:var(--shadow);transition:background var(--dur), border-color var(--dur)}
.settings{padding:26px;animation:up .7s .24s cubic-bezier(.2,.8,.2,1) both}
.settings h2{font-size:20px;margin-bottom:18px}
.row{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:16px 0;
  border-bottom:1px dashed var(--line);flex-wrap:wrap}
.row:last-child{border-bottom:none}
.row b{display:block;font-size:15.5px}
.row small{color:var(--muted);font-size:13.2px}
.sw{width:56px;height:31px;border:none;border-radius:99px;background:rgba(120,124,160,.32);
  position:relative;cursor:pointer;transition:.35s;flex:none}
.sw i{position:absolute;top:3px;left:3px;width:25px;height:25px;border-radius:50%;background:#fff;
  transition:.45s cubic-bezier(.34,1.56,.64,1);box-shadow:0 4px 10px rgba(0,0,0,.3)}
.sw[aria-checked=true]{background:linear-gradient(90deg,var(--acc),var(--acc2))}
.sw[aria-checked=true] i{left:28px}
.swatches{display:flex;gap:10px}
.sw-c{width:34px;height:34px;border-radius:50%;border:2px solid transparent;background:var(--c);
  cursor:pointer;transition:.3s cubic-bezier(.34,1.56,.64,1)}
.sw-c:hover{transform:scale(1.15)}
.sw-c.on{border-color:var(--txt);transform:scale(1.12);box-shadow:0 0 0 4px rgba(124,92,255,.22)}

/* View Transitions (Chromium) */
::view-transition-old(root),::view-transition-new(root){animation-duration:.5s}
::view-transition-old(root){animation:vtOut .45s ease both}
::view-transition-new(root){animation:vtIn .45s ease both}
@keyframes vtOut{to{opacity:0;filter:blur(8px)}}
@keyframes vtIn{from{opacity:0;filter:blur(8px)}}

@media (max-width:640px){
  .settings{padding:20px}
  .mode-label{display:none}
  .track{width:88px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition-duration:.01ms!important}}