/* Shared feature controls for all layouts */
*{box-sizing:border-box}
html,body{margin:0;background:#0d1117;color:#e5e9ef;font:14px/1.4 system-ui,Segoe UI,Roboto,sans-serif;min-height:100vh}

.back{position:fixed;top:10px;right:14px;z-index:200;background:rgba(0,0,0,.5);color:#60a5fa;text-decoration:none;padding:6px 12px;border-radius:4px;font-size:11px;border:1px solid #1f2a37}

/* Brand */
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:inherit}
.brand img{width:22px;height:22px}
.brand-text{font-weight:700;letter-spacing:1px;font-size:15px}
.brand-text b{color:#60a5fa}

/* Nav item base */
.nav-item{
  display:flex;align-items:center;gap:10px;background:transparent;border:0;color:#7c8794;
  padding:10px 12px;border-radius:6px;cursor:pointer;text-align:left;font-size:13px;text-decoration:none;
}
.nav-item:hover{background:#151f2c;color:#e5e9ef}
.nav-item.active{background:#152234;color:#60a5fa}
.nav-item .ico{width:16px;text-align:center}

/* Card */
.card{background:#131c26;border:1px solid #1e2937;border-radius:10px;padding:18px;margin-bottom:14px}
.card h3{margin:0 0 14px;font-size:13px;font-weight:600;color:#e5e9ef}

/* Checkboxes */
.chk{display:flex;align-items:center;gap:10px;padding:5px 0;cursor:pointer;font-size:13px}
.chk.big{font-size:15px;font-weight:600;margin-bottom:12px}
.chk input[type=checkbox]{
  appearance:none;width:16px;height:16px;border:1px solid #1e2937;border-radius:3px;
  background:#0b1220;cursor:pointer;position:relative;flex-shrink:0;
}
.chk input[type=checkbox]:checked{background:#3b82f6;border-color:#3b82f6}
.chk input[type=checkbox]:checked::after{content:"✓";position:absolute;color:#fff;font-size:11px;top:-2px;left:2px;font-weight:700}
.help{display:inline-flex;width:14px;height:14px;align-items:center;justify-content:center;border:1px solid #1e2937;border-radius:50%;color:#7c8794;font-style:normal;font-size:9px}

/* Dropdowns */
.dd-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-top:6px}
select,input[type=text],input:not([type]){
  width:100%;background:#0b1220;color:#e5e9ef;border:1px solid #1e2937;
  border-radius:6px;padding:9px 11px;font-size:13px;
}

/* Sliders */
.slider-row{display:grid;grid-template-columns:1fr auto;column-gap:12px;row-gap:5px;align-items:center;margin-bottom:12px}
.slider-row label{font-size:13px}
.slider-row .val{color:#7c8794;font-size:13px;text-align:right}
.slider-row input[type=range]{grid-column:1/-1;width:100%;accent-color:#3b82f6;height:4px;-webkit-appearance:none;background:#1e2937;border-radius:4px}
.slider-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:#fff;border:2px solid #3b82f6;cursor:pointer}

/* Buttons */
.btn{background:#1e293b;color:#e2e8f0;border:1px solid #1e2937;border-radius:6px;padding:9px 14px;font-size:12px;cursor:pointer;text-decoration:none;display:inline-block}
.btn:hover{background:#243447}
.btn.primary{background:#3b82f6;border-color:#3b82f6;color:#fff}
.btn.ghost{background:transparent}

.key{background:#0b1220;border:1px solid #1e2937;color:#60a5fa;padding:5px 12px;border-radius:4px;font-family:monospace;font-size:11px;cursor:pointer}

.kb-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid #1e2937}
.kb-row:last-child{border-bottom:0}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}

.page{display:none}
.page.active{display:block}

hr{border:0;border-top:1px solid #1e2937;margin:12px 0}

.muted{color:#7c8794}