/* VP Energy — self-serve estimate
   Direction: one question on screen at a time, set large and calm.
   Nothing competes with the question you are being asked. The whole
   surface is quiet so the single number at the end lands hard. */

:root{
  --paper:#FBFAF8;
  --paper-2:#FFFFFF;
  --ink:#140E0C;
  --ink-2:#3A3330;
  --muted:#6B635C;
  --muted-2:#544E48;
  --line:#E3DED5;
  --line-2:#CFC7BB;
  --gold:#F4BF0A;
  --gold-dk:#755A00;
  --tint:#FDF7E6;
  --flag:#8C2B18;

  --disp:"IBM Plex Sans Condensed",system-ui,sans-serif;
  --body:"IBM Plex Sans",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;

  --wrap:660px;
  --pad:clamp(20px,5vw,40px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font:400 17px/1.66 var(--body);-webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;min-height:100vh}
img{max-width:100%;display:block}
[hidden]{display:none !important}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}

/* ---------- chrome ---------- */
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px var(--pad);border-bottom:1px solid var(--line)}
.bar__logo{--logo-h:48px}
.seg{display:inline-flex;border:1px solid var(--line-2);border-radius:3px;overflow:hidden}
.seg__btn{appearance:none;border:0;background:transparent;color:var(--muted);cursor:pointer;
  font:600 12.5px/1 var(--body);letter-spacing:.05em;text-transform:uppercase;padding:9px 12px}
.seg__btn + .seg__btn{border-left:1px solid var(--line-2)}
.seg__btn.is-on{background:var(--ink);color:var(--paper-2)}

.rail{height:3px;background:var(--line);position:sticky;top:0;z-index:5}
.rail__fill{display:block;height:100%;width:0;background:var(--gold);
  transition:width .45s cubic-bezier(.4,0,.2,1)}

/* ---------- steps ---------- */
.stage{flex:1;display:flex;align-items:flex-start;justify-content:center;
  padding:clamp(32px,7vw,74px) var(--pad) 60px}
.step{display:none;width:100%;max-width:var(--wrap)}
.step.is-on{display:block;animation:step-in .42s cubic-bezier(.16,.84,.28,1) both}
.step--wide{max-width:800px}
@keyframes step-in{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

.kicker{font:600 12.5px/1 var(--body);letter-spacing:.09em;text-transform:uppercase;
  color:var(--gold-dk);margin:0 0 18px}
.kicker b{font-family:var(--mono);font-weight:600}
.h1{font:700 clamp(31px,5.4vw,50px)/1.06 var(--disp);letter-spacing:-.018em;
  margin:0 0 18px;text-wrap:balance}
.h2{font:700 clamp(26px,4.2vw,38px)/1.1 var(--disp);letter-spacing:-.015em;
  margin:0 0 14px;text-wrap:balance}
.h3{font:700 clamp(20px,2.6vw,25px)/1.2 var(--disp);margin:38px 0 14px}
.lede{font-size:clamp(16.5px,1.6vw,18.5px);color:var(--ink-2);margin:0 0 30px;max-width:52ch}
.hint{font-size:15.5px;color:var(--muted-2);margin:0 0 28px;max-width:54ch}
.micro{font-size:13.5px;color:var(--muted);margin:18px 0 0;max-width:52ch}

/* ---------- inputs ---------- */
.fld{display:block;margin-bottom:18px}
.fld__k{display:block;font:600 12px/1.3 var(--body);letter-spacing:.05em;
  text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.fld input{width:100%;padding:16px 16px;border:1.5px solid var(--line-2);border-radius:3px;
  background:var(--paper-2);color:var(--ink);font:400 17px/1.3 var(--body)}
.fld input::placeholder{color:#A79F97}
.fld input:focus{border-color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(244,191,10,.35)}
.fld input[aria-invalid="true"]{border-color:var(--flag)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* the bill slider — deliberately the most tactile thing here */
.bigno{display:block;font:600 clamp(56px,12vw,96px)/1 var(--mono);letter-spacing:-.03em;
  margin:8px 0 22px;font-variant-numeric:tabular-nums}
.slider{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:99px;
  background:linear-gradient(to right,var(--gold) 0%,var(--gold) var(--pct,33%),
             var(--line) var(--pct,33%),var(--line) 100%);outline:none}
.slider::-webkit-slider-thumb{-webkit-appearance:none;width:38px;height:38px;border-radius:50%;
  background:var(--ink);border:4px solid var(--paper);cursor:grab;
  box-shadow:0 2px 10px rgba(20,14,12,.28)}
.slider::-moz-range-thumb{width:34px;height:34px;border-radius:50%;background:var(--ink);
  border:4px solid var(--paper);cursor:grab}
.slider__ends{display:flex;justify-content:space-between;margin-top:12px;
  font:500 13px/1 var(--mono);color:var(--muted)}

/* tap-to-answer options */
.picks{display:grid;gap:12px;margin-bottom:8px}
.pick{appearance:none;text-align:left;width:100%;cursor:pointer;
  background:var(--paper-2);border:1.5px solid var(--line-2);border-radius:4px;
  padding:20px 22px;font:500 17.5px/1.35 var(--body);color:var(--ink);
  transition:border-color .14s,background .14s,transform .1s}
.pick:hover{border-color:var(--ink);background:#fff}
.pick:active{transform:translateY(1px)}
.pick.is-on{border-color:var(--ink);background:var(--tint);box-shadow:inset 0 0 0 1px var(--ink)}

/* ---------- buttons ---------- */
.btn{appearance:none;border:2px solid var(--ink);border-radius:3px;cursor:pointer;
  font:600 14px/1 var(--body);letter-spacing:.06em;text-transform:uppercase;
  padding:17px 30px;background:var(--ink);color:var(--paper-2);transition:background .15s,transform .1s}
.btn:hover{background:#2B2320}
.btn:active{transform:translateY(1px)}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--paper-2)}
.btn--go{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn--go:hover{background:#E0AE05;border-color:#E0AE05}
.btn[disabled]{opacity:.55;cursor:progress}
.nav{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}

/* ---------- result ---------- */
.figs{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:4px;overflow:hidden;margin:26px 0 20px}
.fig{background:var(--paper-2);padding:24px 22px}
.fig--hero{background:var(--ink)}
.fig__k{font:600 12px/1.4 var(--body);letter-spacing:.05em;text-transform:uppercase;
  color:var(--muted);margin:0 0 12px;min-height:2.8em}
.fig--hero .fig__k{color:#B8B0A8}
.fig__v{font:600 clamp(30px,5vw,44px)/1 var(--mono);margin:0;letter-spacing:-.025em;
  font-variant-numeric:tabular-nums}
.fig--hero .fig__v{color:var(--gold)}

.flags{display:grid;gap:10px;margin-bottom:22px}
.flag{border-left:4px solid var(--gold);background:var(--tint);padding:14px 18px;
  border-radius:0 3px 3px 0;font-size:15.5px;line-height:1.55;color:var(--ink-2)}
.flag--warn{border-color:var(--flag);background:#FBEDE9;color:#6E2314}

.fine{font-size:13.5px;line-height:1.65;color:var(--muted);margin:0 0 8px;max-width:76ch}

.wedge{border:1px solid var(--line-2);border-radius:4px;padding:22px 24px;margin:24px 0 0;background:var(--paper-2)}
.wedge__h{font:700 16.5px/1.35 var(--disp);margin:0 0 8px}
.wedge__b{font-size:15px;line-height:1.6;color:var(--ink-2);margin:0;max-width:72ch}

/* the two ways out */
.choose{display:grid;gap:14px}
.choice{appearance:none;text-align:left;cursor:pointer;background:var(--paper-2);
  border:1.5px solid var(--line-2);border-radius:4px;padding:24px 26px;
  transition:border-color .14s,background .14s,transform .1s}
.choice:hover{border-color:var(--ink)}
.choice:active{transform:translateY(1px)}
.choice--a{background:var(--tint);border-color:var(--gold-dk)}
.choice__k{display:block;font:700 19px/1.3 var(--disp);margin-bottom:6px}
.choice__d{display:block;font-size:15px;line-height:1.5;color:var(--muted-2)}

/* consent */
.chk{display:flex;gap:12px;align-items:flex-start;cursor:pointer;margin:6px 0 4px;
  border:1px solid var(--line-2);border-radius:3px;padding:16px 18px;background:var(--paper-2)}
.chk input{margin-top:3px;width:19px;height:19px;flex:0 0 auto;accent-color:var(--ink)}
.chk__txt{font-size:13.5px;line-height:1.55;color:var(--ink-2)}

.msg{padding:14px 17px;border-radius:3px;font-size:14.5px;margin:16px 0 0;
  border-left:4px solid var(--flag);background:#FBEDE9;color:#6E2314}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:#C7C0B9;padding:clamp(28px,5vw,44px) var(--pad)}
.foot__lic{font:500 13px/1 var(--mono);color:var(--paper-2);margin:0 0 12px}
.foot__disc{font-size:13.5px;line-height:1.65;max-width:70ch;margin:0 0 16px}
.foot__nav{display:flex;flex-wrap:wrap;gap:8px 22px;margin-bottom:16px}
.foot__nav a{color:var(--gold);text-decoration:none;font-size:13.5px;border-bottom:1px solid transparent}
.foot__nav a:hover{border-bottom-color:var(--gold)}
.foot__cr{font-size:12.5px;color:#98918A;margin:0}

/* ---------- responsive ---------- */
@media (max-width:620px){
  .bar__logo{--logo-h:42px}
  .row{grid-template-columns:1fr;gap:0}
  .figs{grid-template-columns:1fr}
  .fig__k{min-height:0}
  .nav .btn{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}