/* ===========================================================
   BAKSORBIT — Cost Calculator (self-contained, brand palette)
   =========================================================== */
:root{
    --primary:#fd7e14; --primary-dark:#e56f10; --tint:#ffe3c6;
    --bg:#000; --surface:#0c0c0c; --surface-2:#131313;
    --line:rgba(255,255,255,.09); --line-2:rgba(255,255,255,.16);
    --text:rgba(255,255,255,.94); --muted:rgba(255,255,255,.56); --faint:rgba(255,255,255,.34);
    --radius:16px; --ease:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:'Space Grotesk',sans-serif}
a{text-decoration:none;color:inherit}
.accent{color:var(--primary)}
::selection{background:var(--primary);color:#000}
.calc-shell{width:100%;max-width:920px;margin:0 auto;padding:0 24px}

/* header */
.calc-header{position:sticky;top:0;z-index:20;background:rgba(0,0,0,.6);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.calc-header .nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
/* .brand-logo is rendered by the shared site header (style.css) — no override here */
.back-link{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:8px;transition:color .25s}
.back-link:hover{color:var(--primary)}

/* intro */
.calc-main{padding:130px 0 90px}
.calc-intro{text-align:center;margin-bottom:40px}
.kicker{display:inline-flex;align-items:center;gap:12px;font-family:'JetBrains Mono',monospace;font-size:12.5px;letter-spacing:2px;text-transform:uppercase;color:var(--primary);margin-bottom:18px}
.kicker-line{width:34px;height:1px;background:linear-gradient(90deg,transparent,var(--primary))}
.calc-intro h1{font-size:clamp(30px,5vw,48px);font-weight:700;letter-spacing:-1.5px;line-height:1.08}
.calc-intro p{color:var(--muted);font-size:17px;max-width:620px;margin:16px auto 0}

/* card */
.calc-card{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:clamp(24px,4vw,44px);box-shadow:0 30px 80px rgba(0,0,0,.5)}

/* progress */
.calc-progress{margin-bottom:30px}
.cp-meta{display:flex;justify-content:space-between;font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--faint);margin-bottom:10px}
.cp-bar{height:6px;background:rgba(255,255,255,.08);border-radius:6px;overflow:hidden}
.cp-bar span{display:block;height:100%;width:7%;background:linear-gradient(90deg,var(--primary),var(--tint));border-radius:6px;transition:width .5s var(--ease);box-shadow:0 0 14px rgba(253,126,20,.5)}

/* steps */
.calc-step{display:none;animation:fade .45s var(--ease)}
.calc-step.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.step-title{font-size:clamp(21px,2.6vw,28px);font-weight:700;letter-spacing:-.5px;line-height:1.2}
.step-hint{color:var(--muted);font-size:14.5px;margin-top:8px}
.sub-title{font-size:16px;color:var(--text);margin:22px 0 12px;font-weight:600}

/* option grids */
.opt-grid{display:grid;gap:12px;margin-top:24px}
.opt-grid.cols-1{grid-template-columns:1fr}
.opt-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.opt-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.opt{position:relative;cursor:pointer}
.opt input{position:absolute;opacity:0;inset:0;cursor:pointer}
.opt-box{display:flex;align-items:center;gap:10px;padding:16px 18px;border:1.5px solid var(--line-2);border-radius:14px;background:var(--surface-2);
    font-size:15px;font-weight:500;color:var(--text);transition:all .25s var(--ease);min-height:56px}
.opt-box i{color:var(--primary);font-size:18px;flex:none}
.opt:hover .opt-box{border-color:rgba(253,126,20,.5);transform:translateY(-2px)}
.opt input:checked+.opt-box{border-color:var(--primary);background:rgba(253,126,20,.12);box-shadow:0 0 0 3px rgba(253,126,20,.12)}
.opt input:focus-visible+.opt-box{outline:2px solid var(--primary);outline-offset:2px}
.opt-grid.list .opt-box{justify-content:flex-start}

/* chips */
.chip-grid{display:flex;flex-wrap:wrap;gap:10px}
.chip{position:relative;cursor:pointer}
.chip input{position:absolute;opacity:0;inset:0;cursor:pointer}
.chip span{display:inline-block;padding:10px 16px;border:1.5px solid var(--line-2);border-radius:50px;background:var(--surface-2);font-size:14px;transition:all .25s var(--ease)}
.chip:hover span{border-color:rgba(253,126,20,.5)}
.chip input:checked+span{border-color:var(--primary);background:rgba(253,126,20,.14);color:var(--primary)}

/* inputs */
.conditional{margin-top:20px}
.calc-input{width:100%;padding:14px 16px;background:var(--surface-2);border:1.5px solid var(--line-2);border-radius:12px;color:var(--text);
    font-family:inherit;font-size:15px;transition:.25s;resize:vertical}
.calc-input::placeholder{color:var(--faint)}
.calc-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(253,126,20,.12)}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.calc-consent{color:var(--faint);font-size:13px;margin-top:18px}

/* error + nav */
.calc-error{margin-top:22px;padding:12px 16px;border-radius:12px;background:rgba(253,126,20,.1);border:1px solid rgba(253,126,20,.4);color:var(--tint);font-size:14px}
.calc-nav{display:flex;gap:12px;justify-content:space-between;margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}
.cbtn{display:inline-flex;align-items:center;gap:9px;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:15px;padding:14px 26px;border-radius:50px;border:1.5px solid transparent;cursor:pointer;transition:.25s var(--ease)}
.cbtn.primary{background:var(--primary);color:#000;margin-left:auto;box-shadow:0 10px 28px rgba(253,126,20,.3)}
.cbtn.primary:hover{background:var(--tint);transform:translateY(-2px)}
.cbtn.primary:disabled{opacity:.6;cursor:not-allowed;transform:none}
.cbtn.ghost{background:transparent;color:var(--text);border-color:var(--line-2)}
.cbtn.ghost:hover{border-color:var(--primary);color:var(--primary)}
.cbtn.ghost[hidden]{display:none}

/* success */
.calc-success{text-align:center;padding:20px 0}
.success-ico{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;margin:0 auto 24px;background:var(--primary);color:#000;font-size:44px;box-shadow:0 0 50px rgba(253,126,20,.5);animation:pop .5s var(--ease)}
@keyframes pop{from{transform:scale(.6);opacity:0}to{transform:scale(1);opacity:1}}
.calc-success h2{font-size:clamp(24px,3.4vw,34px);font-weight:700;letter-spacing:-1px}
.calc-success>p{color:var(--muted);font-size:17px;max-width:520px;margin:14px auto 0}
.est-box{display:inline-flex;flex-direction:column;gap:4px;margin:28px auto 26px;padding:22px 34px;border:1px solid rgba(253,126,20,.4);border-radius:16px;background:rgba(253,126,20,.08)}
.est-label{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:1px;text-transform:uppercase;color:var(--faint)}
.est-range{font-family:'Space Grotesk';font-size:clamp(28px,5vw,42px);font-weight:700;color:var(--primary);letter-spacing:-1px}
.est-note{font-size:12.5px;color:var(--faint)}
.calc-success .cbtn.primary{margin:0 auto}

/* footer */
.calc-footer{border-top:1px solid var(--line);padding:28px 0;text-align:center;color:var(--faint);font-size:13.5px}

/* responsive */
@media (max-width:680px){
    .opt-grid.cols-3{grid-template-columns:1fr 1fr}
    .field-grid{grid-template-columns:1fr}
    .calc-nav{flex-wrap:wrap}
    .cbtn{flex:1;justify-content:center}
}
@media (max-width:420px){ .opt-grid.cols-2,.opt-grid.cols-3{grid-template-columns:1fr} }