/* Payback Lab shared shell — override :root on tool pages for category tint */
:root{
  --bg:#f6f3ee;--card:#fffdf9;--ink:#1a1a1a;--mut:#5c534a;--line:#e5dfd4;
  --pri:#1a3a2a;--pri2:#2d5a40;--accent:#8fbc9a;--cream:#f3f7f4;
  --ok:#2f6b4f;--warn:#b45309;--bad:#b91c1c;--gold:#d4a017;
  --r:14px;--shadow:0 1px 2px rgba(26,58,42,.04),0 8px 24px rgba(26,58,42,.06);
  --hero-from:#0f2418;--hero-via:#1a3a2a;--hero-to:#2d5a40;
  --hero-glow:rgba(143,188,154,.35);
}
*{box-sizing:border-box}
body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--pri2)}
.wrap{max-width:980px;margin:0 auto;padding:0 16px}

header.hero{
  background:linear-gradient(135deg,var(--hero-from) 0%,var(--hero-via) 45%,var(--hero-to) 100%);
  color:#fff;padding:28px 0 64px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,var(--hero-glow),transparent 70%);pointer-events:none;
}
.hero h1{margin:0 0 6px;font-size:clamp(1.45rem,4vw,2.1rem);letter-spacing:-.02em}
.hero p{margin:0;opacity:.9;max-width:640px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;margin-bottom:18px;opacity:.95}
.brand img{width:28px;height:28px}
.brand a{color:inherit;text-decoration:none}

main{margin-top:-44px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:20px;margin-bottom:16px;box-shadow:var(--shadow);
}
.card h2{margin:0 0 12px;font-size:1.1rem}
.card h2 small{font-weight:400;color:var(--mut);font-size:.85rem}

.grid{display:grid;gap:16px}
@media(min-width:820px){.grid.two{grid-template-columns:1.1fr .9fr}.grid.three{grid-template-columns:repeat(3,1fr)}}

label{font-size:.8rem;color:var(--mut);font-weight:600;display:block;margin-bottom:4px}
input[type=number],input[type=text],select{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;
  font:inherit;background:#fff;color:var(--ink);min-height:44px;
}
input:focus,select:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
.hint{font-size:.75rem;color:var(--mut);margin-top:4px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  padding:9px 14px;border-radius:10px;font:inherit;font-weight:600;cursor:pointer;min-height:42px;
}
.btn:hover{border-color:#d4c4b4;background:var(--cream)}
.btn.pri{background:var(--pri2);border-color:var(--pri2);color:#fff}
.btn.pri:hover{background:var(--pri)}
.btn.sm{padding:5px 10px;min-height:34px;font-size:.85rem}
.btn.ghost{border-color:transparent;background:transparent;color:var(--mut)}
.btn.ghost:hover{color:var(--bad);background:#fef2f2}
.btn.active{border-color:var(--pri2);color:var(--pri);background:var(--cream)}

.row{display:flex;gap:10px;flex-wrap:wrap;align-items:end}
.row>div{flex:1 1 140px}

.chips{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 14px}
.chip{
  border:1px solid var(--line);background:var(--cream);border-radius:999px;
  padding:6px 12px;font-size:.82rem;cursor:pointer;color:var(--ink);font-weight:600;
}
.chip:hover,.chip.active{border-color:var(--pri2);color:var(--pri);background:color-mix(in srgb,var(--cream) 70%,var(--accent))}

.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:14px 0}
@media(min-width:560px){.stats.four{grid-template-columns:repeat(4,1fr)}}
.stat{background:var(--cream);border-radius:12px;padding:12px}
.stat b{display:block;font-size:1.45rem;line-height:1.15;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat span{font-size:.78rem;color:var(--mut)}
.stat.hl{background:linear-gradient(135deg,var(--cream),color-mix(in srgb,var(--cream) 60%,var(--accent)));border:1px solid var(--line)}
.stat.hl b{color:var(--pri)}

.progress-wrap{margin:12px 0 4px}
.progress-label{display:flex;justify-content:space-between;font-size:.82rem;color:var(--mut);margin-bottom:6px}
.progress{
  height:14px;background:color-mix(in srgb,var(--cream) 80%,var(--line));border-radius:999px;overflow:hidden;position:relative;
}
.progress>i{
  display:block;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--pri2),var(--accent));width:0;transition:width .35s ease;
}
.progress.done>i{background:linear-gradient(90deg,#2f6b4f,#5a9a78)}
.progress.never>i{background:linear-gradient(90deg,#b91c1c,#f87171);width:8%!important}

.alert{border-radius:12px;padding:12px 14px;font-size:.93rem;margin:10px 0}
.alert.ok{background:#ecfdf5;color:#065f46}
.alert.warn{background:#fffbeb;color:#92400e}
.alert.bad{background:#fef2f2;color:#991b1b}
.alert.info{background:var(--cream);color:var(--ink)}

.bars{display:grid;gap:8px;margin-top:8px}
.bar-row{display:grid;grid-template-columns:120px 1fr 72px;gap:8px;align-items:center;font-size:.85rem}
.bar-row .track{height:10px;background:color-mix(in srgb,var(--cream) 80%,var(--line));border-radius:999px;overflow:hidden}
.bar-row .track>i{display:block;height:100%;border-radius:999px;background:var(--pri2)}
.bar-row .track>i.alt{background:var(--accent)}
.bar-row .track>i.muted{background:#cbb8a6}
.bar-row .val{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}

.compare{display:grid;gap:12px}
@media(min-width:700px){.compare{grid-template-columns:repeat(3,1fr)}}
.machine-card{
  border:1px solid var(--line);border-radius:12px;padding:14px;background:#fff;
  display:flex;flex-direction:column;gap:8px;
}
.machine-card.winner{border-color:var(--ok);box-shadow:0 0 0 2px rgba(47,107,79,.15)}
.machine-card h3{margin:0;font-size:1rem}
.machine-card .badge{font-size:.7rem;background:#ecfdf5;color:#065f46;border-radius:6px;padding:2px 8px;font-weight:700;width:fit-content}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}

.toggle-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:10px}
.seg{
  display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;
}
.seg button{
  border:0;background:transparent;padding:8px 12px;font:inherit;font-weight:600;cursor:pointer;
  color:var(--mut);min-height:40px;
}
.seg button+button{border-left:1px solid var(--line)}
.seg button.on{background:var(--pri2);color:#fff}

.advanced{border-top:1px dashed var(--line);margin-top:12px;padding-top:12px}
.advanced summary{cursor:pointer;font-weight:600;color:var(--mut);font-size:.9rem}
.sens{display:grid;gap:8px;margin-top:8px}
.sens-item{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;background:var(--cream);border-radius:10px;font-size:.9rem;flex-wrap:wrap}
.sens-item b{font-variant-numeric:tabular-nums}

.mini{font-size:.85rem;color:var(--mut)}
.cite{font-size:.9rem;color:var(--mut);margin:0 0 8px}
.cite li{margin-bottom:4px}
details.faq-item{border-top:1px solid var(--line);padding:12px 0}
details.faq-item:first-of-type{border-top:0}
summary{cursor:pointer;font-weight:600;list-style:none}
summary::after{content:"+";float:right;color:var(--mut)}
details[open] summary::after{content:"–"}
details.faq-item p{margin:8px 0 0;color:#3a342e}

.answer-block{
  background:var(--cream);border-left:4px solid var(--pri2);border-radius:0 12px 12px 0;
  padding:14px 16px;margin-bottom:16px;font-size:.95rem;
}
.answer-block strong{color:var(--pri)}

.related{display:flex;flex-wrap:wrap;gap:10px}
.related a{
  display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:10px;
  border:1px solid var(--line);background:#fff;text-decoration:none;color:var(--ink);font-weight:600;font-size:.9rem;
}
.related a:hover{border-color:var(--pri2);color:var(--pri)}

.ad-slot{min-height:0;margin:0 0 16px;text-align:center}
.ad-slot:empty{display:none}
.ad-slot[data-show]{
  min-height:90px;border:1px dashed var(--line);border-radius:var(--r);
  display:flex;align-items:center;justify-content:center;color:#c4b8a8;
  font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;
}

footer{color:var(--mut);font-size:.82rem;padding:24px 0 40px}
.toast{
  position:fixed;left:50%;bottom:20px;transform:translateX(-50%) translateY(80px);
  background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;transition:.25s;
  font-size:.9rem;z-index:9;
}
.toast.show{transform:translateX(-50%)}
.sr{position:absolute;left:-9999px}
.currency-prefix{position:relative;display:block}
.currency-prefix input{padding-left:28px}
.currency-prefix::after{
  content:attr(data-sym);position:absolute;left:12px;bottom:11px;
  color:var(--mut);font-weight:600;font-size:.9rem;pointer-events:none;line-height:1;
}

.compare-table{width:100%;border-collapse:collapse;font-size:.9rem;margin-top:8px}
.compare-table th,.compare-table td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left}
.compare-table th{color:var(--mut);font-size:.78rem;font-weight:600}
.compare-table td{font-variant-numeric:tabular-nums}

/* —— Shared chrome: sticky tool switcher (long-termist, calm) —— */
.site-chrome{
  position:sticky;top:0;z-index:40;
  background:rgba(255,253,249,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.tool-nav{
  position:sticky;top:0;z-index:40;
  background:rgba(255,253,249,.94);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(255,255,255,.8);
}
.tool-nav-inner{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding-top:10px;padding-bottom:10px;
}
.tool-nav-brand{
  display:flex;flex-direction:column;gap:0;text-decoration:none;color:var(--ink);
  flex:0 0 auto;min-width:7.5rem;margin-right:4px;
}
.tool-nav-brand .mark{font-weight:700;font-size:.95rem;letter-spacing:-.01em;color:var(--pri)}
.tool-nav-brand .tag{font-size:.68rem;color:var(--mut);font-weight:500;letter-spacing:.02em}
.tool-tabs{
  display:flex;gap:4px;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;flex:1;padding:2px 0;
}
.tool-tabs::-webkit-scrollbar{display:none}
.tool-tabs .tab{
  flex:0 0 auto;text-decoration:none;color:var(--mut);
  font-size:.8rem;font-weight:600;padding:7px 12px;border-radius:999px;
  border:1px solid transparent;white-space:nowrap;transition:background .15s,color .15s,border-color .15s;
}
.tool-tabs .tab:hover{color:var(--pri);background:var(--cream);border-color:var(--line)}
.tool-tabs .tab.on{
  color:var(--pri);background:var(--cream);
  border-color:color-mix(in srgb,var(--pri2) 35%,var(--line));
  box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 40%,transparent);
}
/* Hub tool grid */
.tool-grid{display:grid;gap:12px}
@media(min-width:640px){.tool-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.tool-grid{grid-template-columns:repeat(3,1fr)}}
.tool-tile{
  display:flex;flex-direction:column;gap:6px;padding:16px 18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  text-decoration:none;color:var(--ink);box-shadow:var(--shadow);
  transition:border-color .15s,box-shadow .15s;
}
.tool-tile:hover{border-color:var(--pri2);box-shadow:0 4px 20px rgba(26,58,42,.08)}
.tool-tile h3{margin:0;font-size:1.02rem}
.tool-tile p{margin:0;font-size:.85rem;color:var(--mut)}
.tool-tile .cluster{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--pri2)}

/* hidden attribute must win over .row display */
[hidden]{display:none!important}