/* ============================================================
   PureTax AI — shared design system
   Ledger aesthetic: paper, pine ink, money green, savings gold
   ============================================================ */
:root{
  --paper:#F3F5EF; --card:#FBFCF8; --ink:#15261E; --ink-2:#3E4F46; --ink-soft:#6B7A71;
  --line:#DBE0D5; --line-strong:#C7CFBF;
  --green:#157A55; --green-deep:#0D5A3E; --green-glow:#5BD39A;
  --gold:#B6841A; --gold-soft:#E9C462; --gold-glow:#F4D98A;
  --receipt:#16271F; --radius:18px; --maxw:1140px;
  --shadow:0 1px 0 rgba(21,38,30,.04), 0 18px 40px -24px rgba(21,38,30,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(1200px 540px at 88% -10%, rgba(91,211,154,.10), transparent 60%),
    radial-gradient(900px 480px at 4% 0%, rgba(233,196,98,.10), transparent 55%),
    var(--paper);
  color:var(--ink);
  font-family:"Hanken Grotesk", system-ui, -apple-system, sans-serif;
  font-size:17px; line-height:1.6; -webkit-font-smoothing:antialiased;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.narrow{max-width:820px}
a{color:var(--green-deep);text-decoration-thickness:1px;text-underline-offset:3px}
img{max-width:100%}

/* ---- top bar ---- */
.topbar{border-bottom:1px solid var(--line);background:rgba(243,245,239,.88);backdrop-filter:blur(8px);position:sticky;top:0;z-index:50}
.topbar .row{display:flex;align-items:center;justify-content:space-between;height:62px;gap:16px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:-.02em;text-decoration:none;color:var(--ink)}
.brand .mark{width:34px;height:34px;border-radius:9px;background:var(--receipt);color:var(--green-glow);display:grid;place-items:center;font-family:"Space Mono",monospace;font-weight:700;font-size:14px;flex:none}
.brand b{font-family:"Bricolage Grotesque",sans-serif;font-size:18px}
.brand span{color:var(--ink-soft);font-weight:500}
.topnav{display:flex;gap:22px;font-size:14.5px;font-weight:600;align-items:center}
.topnav a{color:var(--ink-2);text-decoration:none}
.topnav a:hover,.topnav a[aria-current="page"]{color:var(--green-deep)}
.menu-btn{display:none;background:none;border:1.5px solid var(--line-strong);border-radius:9px;padding:7px 9px;cursor:pointer;color:var(--ink)}
@media(max-width:820px){
  .menu-btn{display:inline-flex}
  .topnav{position:absolute;top:62px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:0;background:var(--paper);border-bottom:1px solid var(--line);padding:6px 22px 14px;display:none}
  .topnav.open{display:flex}
  .topnav a{padding:11px 0;width:100%;border-bottom:1px solid var(--line)}
}

/* ---- hero / generic page head ---- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:"Space Mono",monospace;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--green-deep);background:rgba(21,122,85,.10);border:1px solid rgba(21,122,85,.22);border-radius:999px;padding:5px 12px;margin-bottom:14px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(21,122,85,.16)}
.h1{font-family:"Bricolage Grotesque",sans-serif;font-weight:800;font-size:clamp(28px,4.4vw,46px);line-height:1.04;letter-spacing:-.025em;margin:0 0 10px}
.h1 .hl{background:linear-gradient(180deg,transparent 62%, var(--gold-glow) 62%);padding:0 .06em}
.sub{color:var(--ink-2);max-width:64ch;margin:0 0 22px;font-size:17px}
.crumbs{font-size:13px;color:var(--ink-soft);margin:26px 0 12px;font-family:"Space Mono",monospace}
.crumbs a{color:var(--ink-soft);text-decoration:none}
.crumbs a:hover{color:var(--green-deep)}

/* ---- panels / cards ---- */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.section-pad{padding:30px 0 8px}
.content{padding:48px 0}

/* ---- forms ---- */
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:7px}
.field label .hint{font-weight:500;color:var(--ink-soft);font-size:12.5px}
.control{display:flex;align-items:center;border:1.5px solid var(--line-strong);border-radius:12px;background:#fff;overflow:hidden;transition:border-color .15s, box-shadow .15s}
.control:focus-within{border-color:var(--green);box-shadow:0 0 0 4px rgba(21,122,85,.13)}
.control .pre{padding:0 13px;color:var(--ink-soft);font-family:"Space Mono",monospace;font-size:16px;border-right:1.5px solid var(--line);align-self:stretch;display:flex;align-items:center;background:#F7F9F4}
.control input,.control select,.control textarea{border:0;outline:0;background:transparent;width:100%;padding:13px 14px;font-family:"Space Mono",monospace;font-size:18px;color:var(--ink);font-weight:700}
.control textarea{font-family:"Hanken Grotesk";font-weight:500;font-size:16px;min-height:120px;resize:vertical}
.control .suf{padding:0 14px;color:var(--ink-soft);font-size:13px;white-space:nowrap}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:420px){.two{grid-template-columns:1fr}}

.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{flex:1;min-width:96px;cursor:pointer;border:1.5px solid var(--line-strong);background:#fff;border-radius:12px;padding:11px 10px;text-align:center;transition:.15s}
.chip .x{font-family:"Space Mono",monospace;font-weight:700;font-size:17px;display:block;line-height:1.1}
.chip .t{font-size:11.5px;color:var(--ink-soft);display:block;margin-top:2px}
.chip:hover{border-color:var(--green)}
.chip.active{border-color:var(--green);background:rgba(21,122,85,.08);box-shadow:0 0 0 3px rgba(21,122,85,.1)}
.chip.active .x{color:var(--green-deep)}

.btn{cursor:pointer;border-radius:11px;font-weight:600;font-size:13.5px;padding:10px 14px;border:1.5px solid var(--line-strong);background:#fff;color:var(--ink);transition:.15s;display:inline-flex;align-items:center;gap:7px;text-decoration:none;font-family:inherit}
.btn:hover{border-color:var(--green);color:var(--green-deep)}
.btn.ghost{border-style:dashed}
.btn.solid{background:var(--green);border-color:var(--green);color:#fff}
.btn.solid:hover{background:var(--green-deep);border-color:var(--green-deep);color:#fff}
.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:6px}

/* ---- prose pages (legal/about) ---- */
.prose{color:var(--ink-2)}
.prose h2{font-family:"Bricolage Grotesque";font-weight:800;font-size:clamp(22px,3vw,28px);letter-spacing:-.02em;color:var(--ink);margin:34px 0 10px}
.prose h3{font-family:"Bricolage Grotesque";font-weight:700;font-size:18px;color:var(--ink);margin:22px 0 6px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 16px;padding-left:20px}
.prose li{margin-bottom:7px}
.prose .meta{font-family:"Space Mono",monospace;font-size:12.5px;color:var(--ink-soft);margin-bottom:24px}
.prose a{font-weight:600}
.prose strong{color:var(--ink)}

/* ---- content sections (kicker/h2) ---- */
.sec{margin:0 auto 52px;max-width:860px}
.kicker{font-family:"Space Mono",monospace;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--green);margin:0 0 8px}
.sec h2{font-family:"Bricolage Grotesque";font-weight:800;font-size:clamp(24px,3.4vw,32px);letter-spacing:-.02em;line-height:1.1;margin:0 0 14px}
.sec h3{font-family:"Bricolage Grotesque";font-weight:700;font-size:19px;margin:26px 0 8px}
.sec p{color:var(--ink-2);margin:0 0 14px}
.formula{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--green);border-radius:12px;padding:16px 18px;font-family:"Space Mono",monospace;font-size:15px;color:var(--ink);margin:8px 0 18px;overflow-x:auto}
.formula b{color:var(--green-deep)}

/* ---- tables ---- */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:14.5px;margin:10px 0 6px;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
caption{caption-side:bottom;font-size:12.5px;color:var(--ink-soft);text-align:left;padding:8px 2px}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line)}
thead th{background:#EEF2E9;font-weight:700;font-size:13px;color:var(--ink)}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:rgba(238,242,233,.45)}
.ref td:not(:first-child){font-family:"Space Mono",monospace;font-weight:700}
.ref td:first-child{font-weight:700}
.tag{display:inline-block;font-size:11.5px;font-weight:700;padding:2px 8px;border-radius:6px;font-family:"Space Mono",monospace}
.tag.day{background:rgba(21,122,85,.14);color:var(--green-deep)}
.tag.dbl{background:rgba(182,132,26,.16);color:var(--gold)}
.tag.fed{background:#EEF2E9;color:var(--ink-2)}

/* ---- grids / mini cards ---- */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:8px 0}
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:8px 0}
@media(max-width:740px){.cols,.cols-3{grid-template-columns:1fr}}
.mini{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.mini h3{margin-top:0;font-family:"Bricolage Grotesque";font-weight:700;font-size:18px}
.mini ul{margin:6px 0 0;padding-left:18px;color:var(--ink-2)}
.mini li{margin-bottom:6px}
.mini p{color:var(--ink-2);margin:6px 0 0}
.tool-card{display:block;text-decoration:none;color:inherit;transition:.15s}
.tool-card:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow)}
.tool-card .ico{font-family:"Space Mono",monospace;font-weight:700;font-size:15px;color:var(--green-deep);background:rgba(21,122,85,.1);width:40px;height:40px;border-radius:10px;display:grid;place-items:center;margin-bottom:10px}
.tool-card .go{color:var(--green-deep);font-weight:700;font-size:13.5px;margin-top:8px;display:inline-block}
.pill-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.pill{font-size:12.5px;font-weight:600;background:#EEF2E9;border:1px solid var(--line);border-radius:999px;padding:4px 11px;color:var(--ink-2)}

/* ---- callouts ---- */
.callout{background:linear-gradient(180deg, rgba(182,132,26,.10), rgba(233,196,98,.05));border:1px solid rgba(182,132,26,.32);border-radius:14px;padding:18px 20px}
.callout .kicker{color:var(--gold)}
.note-green{background:linear-gradient(180deg, rgba(21,122,85,.08), rgba(91,211,154,.04));border:1px solid rgba(21,122,85,.28);border-radius:14px;padding:16px 18px}

/* ---- daily tip ---- */
.tip{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--gold-soft);border-radius:14px;padding:15px 18px;margin:18px 0 4px}
.tip .lab{font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);white-space:nowrap;padding-top:2px}
.tip .txt{margin:0;color:var(--ink-2);font-size:15.5px}

/* ---- faq ---- */
.faq details{border:1px solid var(--line);border-radius:12px;background:var(--card);margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;padding:15px 18px;font-weight:700;font-family:"Bricolage Grotesque";font-size:16.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:"Space Mono",monospace;font-size:22px;color:var(--green);transition:transform .2s;flex:none}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 18px 16px;color:var(--ink-2)}

.disclaimer{font-size:13px;color:var(--ink-soft);border-top:1px dashed var(--line-strong);padding-top:16px;margin-top:6px}

/* ---- footer ---- */
footer.site{border-top:1px solid var(--line);background:#EEF1EA;margin-top:50px;padding:38px 0 30px;font-size:14px}
.fcols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:26px}
@media(max-width:780px){.fcols{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.fcols{grid-template-columns:1fr}}
footer.site h4{font-family:"Space Mono",monospace;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);margin:0 0 12px}
footer.site ul{list-style:none;margin:0;padding:0}
footer.site li{margin-bottom:8px}
footer.site a{color:var(--ink-2);text-decoration:none}
footer.site a:hover{color:var(--green-deep)}
footer.site .blurb{color:var(--ink-soft);font-size:13.5px;max-width:34ch;margin:10px 0 0}
.fbot{border-top:1px solid var(--line-strong);margin-top:28px;padding-top:18px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--ink-soft);font-size:12.5px}

/* ---- cookie banner ---- */
.cookie{position:fixed;left:16px;right:16px;bottom:16px;z-index:100;max-width:560px;margin:0 auto;background:var(--receipt);color:#EAF0EB;border-radius:16px;padding:18px 20px;box-shadow:0 24px 50px -20px rgba(21,38,30,.6);display:none}
.cookie.show{display:block}
.cookie p{margin:0 0 14px;font-size:13.5px;color:#C9D6CE;line-height:1.5}
.cookie a{color:var(--green-glow)}
.cookie .row{display:flex;gap:9px;flex-wrap:wrap}
.cookie .btn{border-color:rgba(255,255,255,.25);background:transparent;color:#EAF0EB}
.cookie .btn:hover{border-color:var(--green-glow);color:var(--green-glow)}
.cookie .btn.solid{background:var(--green-glow);border-color:var(--green-glow);color:#16271F}
.cookie .btn.solid:hover{background:#7fe0b3;color:#16271F}

/* ---- a11y ---- */
:focus-visible{outline:3px solid var(--green);outline-offset:2px;border-radius:6px}
.visually-hidden{position:absolute;width:1px;height:1px;clip:rect(0 0 0 0);overflow:hidden}
.skip{position:absolute;left:-999px;top:0;background:var(--green);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:200}
.skip:focus{left:0}
@media (prefers-reduced-motion: reduce){*{scroll-behavior:auto !important;transition:none !important;animation:none !important}}