/* Shared design system for every page. Calculator-specific styles live in their own files. */
:root{
  --bg:#f4f6f3; --surface:#ffffff; --sunk:#eef1ed; --line:#dbe1da; --fg:#16201b; --muted:#5a6760;
  --accent:#1d6a51; --accent-ink:#ffffff; --accent-soft:#e1efe8; --edit:#fff4d6; --edit-line:#e3c56d;
  --good:#1d7a4f; --bad:#b23b2a; --warn:#8a5a10; --warn-soft:#fbf1e0;
  --s1:#1d6a51; --s2:#3a56c9; --s3:#a86d12; --s4:#963a73; --s5:#c24c2a;
  --f-display:"Bricolage Grotesque","Avenir Next",system-ui,sans-serif;
  --f-body:"Public Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;
  --r:10px; --max:1180px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0f1412; --surface:#161d1a; --sunk:#121816; --line:#2a3430; --fg:#e4ebe7; --muted:#93a29a;
  --accent:#4fb38e; --accent-ink:#0b1410; --accent-soft:#1c2e27; --edit:#3a3218; --edit-line:#8a7430;
  --good:#5cc48f; --bad:#ef7a66; --warn:#e8b062; --warn-soft:#2c2416;
  --s1:#4fb38e; --s2:#7e95f2; --s3:#e0a647; --s4:#d27bb0; --s5:#f08a62;
  color-scheme:dark;
}}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:15px;line-height:1.5}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(1.6rem,3.4vw,2.3rem);font-weight:700}
h2{font-size:1.25rem;font-weight:700}
h3{font-size:1.02rem;font-weight:700}
a{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
[hidden]{display:none!important}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:10;background:var(--surface);padding:6px 10px;border-radius:6px}

/* Header / footer */
.site-head{border-bottom:1px solid var(--line);background:var(--surface)}
.site-head-in{max-width:var(--max);margin:0 auto;padding:12px 20px;display:flex;gap:10px 24px;align-items:center;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-family:var(--f-display);font-weight:700;font-size:1.1rem;color:var(--fg);text-decoration:none}
.site-nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.site-nav a{color:var(--muted);text-decoration:none;padding:6px 10px;border-radius:8px;font-size:.92rem;font-weight:500}
.site-nav a:hover{color:var(--fg);background:var(--sunk)}
.site-nav a[aria-current=page]{color:var(--fg);background:var(--accent-soft)}
@media (max-width:640px){.site-nav{margin-left:0;width:100%;overflow-x:auto;flex-wrap:nowrap}.site-nav a{white-space:nowrap}}
.site-foot{border-top:1px solid var(--line);margin-top:48px}
.site-foot-in{max-width:var(--max);margin:0 auto;padding:20px;color:var(--muted);font-size:.85rem}
.site-foot p{margin:4px 0}

/* Page structure */
.wrap{max-width:var(--max);margin:0 auto;padding:28px 20px 24px;display:flex;flex-direction:column;gap:24px}
.wrap.narrow{max-width:880px}
.page-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px}
.sub{color:var(--muted);margin:6px 0 0;max-width:68ch}
.eyebrow{font-size:.72rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);font-weight:600}
.num{font-family:var(--f-num);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
.pos{color:var(--good)}.neg{color:var(--bad)}

.card,.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:flex;flex-direction:column;gap:14px;min-width:0}
.card-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:12px}
.hero{background:var(--accent-soft);border-color:transparent}
.big{font-family:var(--f-display);font-size:2.4rem;font-weight:700;color:var(--accent);letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1}

/* Forms */
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field label,.lbl{font-size:.8rem;font-weight:600;color:var(--muted)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px 18px}
.inp{display:flex;align-items:center;border:1px solid var(--line);border-radius:8px;background:var(--sunk);padding:0 10px;min-width:0}
.inp:focus-within{border-color:var(--accent)}
.inp>span{color:var(--muted);font-size:.85rem}
.inp input,.inp select{border:0;background:transparent;padding:8px 4px;width:100%;min-width:0;outline:none;font-family:var(--f-num);font-variant-numeric:tabular-nums}
.inp input[type=text]{font-family:var(--f-body)}
.inp select{font-family:var(--f-body)}
.hint{font-size:.78rem;color:var(--muted)}
.warn{font-size:.8rem;color:var(--bad)}
.check{display:flex;gap:8px;align-items:flex-start;font-size:.88rem}
.check input{margin-top:3px}
.divider{border-top:1px solid var(--line)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:transparent;border-radius:999px;padding:2px 10px;font-size:.8rem;cursor:pointer}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.live{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}

/* Buttons */
.btn{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:7px 12px;cursor:pointer;font-size:.88rem;font-weight:500;text-decoration:none;color:var(--fg);display:inline-flex;align-items:center;gap:6px}
.btn:hover{border-color:var(--muted)}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.ghost{background:transparent}
.btn.danger{color:var(--bad)}
.btn.danger.armed{background:var(--bad);color:#fff;border-color:var(--bad)}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;display:flex;flex-direction:column;gap:4px;min-width:0}
.hero .stat{background:transparent;border:0;padding:0}
.stat .v{font-family:var(--f-display);font-size:1.4rem;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.15}
.stat .d,.stat .k{font-size:.8rem;color:var(--muted)}

/* Tables */
.scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.9rem}
th{font-size:.72rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);font-weight:600;text-align:right;padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
th:first-child,td:first-child{text-align:left}
td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap;font-family:var(--f-num);font-variant-numeric:tabular-nums}

/* Notices */
.notice{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--accent-soft);border:1px solid var(--line);border-radius:var(--r);padding:10px 14px;font-size:.9rem}
.notice.warnbox{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.callout{background:var(--warn-soft);color:var(--warn);border-radius:8px;padding:10px 12px;font-size:.86rem}

/* Share / save bar (core.js) */
.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:9px 14px;border-radius:8px;font-size:.88rem;z-index:20;box-shadow:0 8px 24px rgba(0,0,0,.2);max-width:calc(100vw - 32px)}
.sharebox{width:100%;font-family:var(--f-num);font-size:.75rem;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--sunk)}

/* Tax profile panel (profile.js) */
.profile-sum{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.profile-sum .txt{font-size:.9rem}
.rates{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.rate{background:var(--sunk);border-radius:8px;padding:8px 6px;text-align:center}
.rate b{display:block;font:500 1.05rem var(--f-num)}
.rate span{font-size:.7rem;color:var(--muted)}
.rate.total{background:var(--accent-soft)}

/* Treasury strip (rates.js) */
.curve{display:grid;grid-template-columns:repeat(auto-fit,minmax(74px,1fr));gap:8px}
.curve div{background:var(--sunk);border-radius:8px;padding:8px;text-align:center}
.curve b{display:block;font:500 1.05rem var(--f-num)}
.curve span{font-size:.72rem;color:var(--muted)}
.curve small{display:block;font:400 .7rem var(--f-num)}

/* Long-form explanation under each calculator */
.prose{max-width:72ch}
.prose h2{margin:8px 0 6px}
.prose h3{margin:18px 0 4px}
.prose p,.prose li{color:var(--fg)}
.prose ul{padding-left:20px}.prose li{margin-bottom:6px}
.prose code{font-family:var(--f-num);font-size:.88em;background:var(--sunk);padding:1px 5px;border-radius:4px}

/* Home */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;text-decoration:none;color:var(--fg);display:flex;flex-direction:column;gap:8px}
.tile:hover{border-color:var(--accent)}
.tile p{margin:0;color:var(--muted);font-size:.92rem}
.tile .go{color:var(--accent);font-weight:600;font-size:.9rem;margin-top:auto}

@media (prefers-reduced-motion:no-preference){.btn,.chip,.tile{transition:border-color .15s,background .15s}}
@media print{.site-head,.site-foot,.toolbar,.actions{display:none!important}body{background:#fff}}