/* Finance Calculators — shared stylesheet. Plain CSS, system fonts, no external requests. */
:root{--navy:#0f2a44;--blue:#1668b4;--blue-dark:#0d4d86;--green:#0e7a4c;--bg:#f4f7fa;--card:#fff;--text:#1c2733;--muted:#5a6b7a;--border:#d8e2ea;--radius:12px;--max:1080px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.65;font-size:17px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:2rem;line-height:1.25;margin:.4em 0 .5em;color:var(--navy)}
h2{font-size:1.45rem;color:var(--navy);margin:1.8em 0 .5em;border-bottom:2px solid var(--border);padding-bottom:.3em}
h3{font-size:1.15rem;color:var(--navy);margin:1.4em 0 .4em}
p{margin:.6em 0}
ul,ol{margin:.5em 0 .8em;padding-left:1.4em}
li{margin:.3em 0}
.container{max-width:var(--max);margin:0 auto;padding:0 18px}
header.site{background:var(--navy);color:#fff}
header.site .container{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px;padding:14px 18px}
.logo{font-size:1.35rem;font-weight:800;color:#fff;letter-spacing:-.02em}
.logo span{color:#7cc4ff}
nav.main{display:flex;flex-wrap:wrap;gap:4px 18px}
nav.main a{color:#d6e6f5;font-size:.95rem}
nav.main a:hover{color:#fff}
.breadcrumb{font-size:.88rem;color:var(--muted);margin:16px 0 0}
.breadcrumb a{color:var(--muted)}
main{background:#fff}
main .container{padding-top:10px;padding-bottom:48px}
.hero{background:linear-gradient(135deg,#0f2a44,#1668b4);color:#fff;border-radius:0 0 16px 16px}
.hero .container{padding:38px 18px 34px}
.hero h1{color:#fff;margin-top:0}
.hero p{color:#d6e6f5;max-width:720px}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin:24px 0}
.tool-card{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;color:var(--text)}
.tool-card:hover{border-color:var(--blue);box-shadow:0 4px 16px rgba(15,42,68,.12);text-decoration:none}
.tool-card h3{margin:0 0 6px;color:var(--navy)}
.tool-card p{margin:0;color:var(--muted);font-size:.95rem}
.tool-card .cta{color:var(--blue);font-weight:700;margin-top:10px;display:block}
.calculator{background:#f0f6fb;border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin:20px 0}
.calculator label{display:block;font-weight:700;margin:14px 0 5px;font-size:.95rem}
.calculator label small{font-weight:400;color:var(--muted)}
.calculator input,.calculator select{width:100%;padding:11px 12px;font-size:1rem;border:1px solid #b9c9d6;border-radius:8px;background:#fff;color:var(--text)}
.calculator input:focus,.calculator select:focus{outline:3px solid #bcd9f2;border-color:var(--blue)}
.input-row{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
@media(max-width:640px){.input-row{grid-template-columns:1fr}}
button.calc-btn,.btn{display:inline-block;background:var(--blue);color:#fff;border:0;border-radius:8px;padding:13px 26px;font-size:1.05rem;font-weight:700;cursor:pointer;margin-top:18px}
button.calc-btn:hover,.btn:hover{background:var(--blue-dark);text-decoration:none}
.results{background:#eaf6ee;border:1px solid #bfe3cc;border-radius:var(--radius);padding:20px;margin:20px 0;display:none}
.results.visible{display:block}
.results h2{margin-top:0;border:0;padding:0}
.big-result{font-size:2rem;font-weight:800;color:var(--green);margin:4px 0}
.result-row{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #d5e8dc;font-size:.98rem}
.result-row:last-child{border-bottom:0}
.result-row span:first-child{color:var(--muted)}
.result-row strong{text-align:right}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.95rem}
th,td{padding:9px 10px;border-bottom:1px solid var(--border);text-align:left}
th{background:#eef3f7;color:var(--navy)}
td.num,th.num{text-align:right}
.faq details{border:1px solid var(--border);border-radius:8px;padding:12px 16px;margin:10px 0;background:#fff}
.faq summary{font-weight:700;cursor:pointer;color:var(--navy)}
.faq p{margin:.5em 0 0}
.ad-slot{background:#eef3f7;border:1px dashed #b9c9d6;border-radius:8px;min-height:250px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.9rem;text-align:center;margin:28px 0;padding:16px}
.related{background:#f0f6fb;border-radius:var(--radius);padding:20px;margin:28px 0}
.related ul{margin:.4em 0}
.disclaimer{background:#fff8e6;border:1px solid #f0d48a;border-radius:8px;padding:14px 18px;font-size:.92rem;margin:24px 0}
footer.site{background:var(--navy);color:#c9d9e8;margin-top:0}
footer.site .container{padding:28px 18px;font-size:.92rem}
footer.site a{color:#a8cdf0}
footer.site nav{display:flex;flex-wrap:wrap;gap:6px 20px;margin-bottom:12px}
.callout{background:#e8f1fa;border-left:4px solid var(--blue);padding:14px 18px;border-radius:0 8px 8px 0;margin:18px 0}
@media(max-width:640px){body{font-size:16px}h1{font-size:1.6rem}.big-result{font-size:1.6rem}.calculator{padding:16px}}
/* ---- Responsive: mobile-first, no horizontal overflow ---- */
html,body{overflow-x:hidden}
img,table,canvas,video{max-width:100%}
table{display:block;overflow-x:auto}
.menu-toggle{display:none;background:transparent;border:1px solid #7cc4ff;color:#fff;border-radius:8px;padding:10px 14px;font-size:1rem;font-weight:700;cursor:pointer;min-height:44px}
@media(max-width:760px){
  .menu-toggle{display:block}
  header.site .container{justify-content:space-between}
  nav.main{display:none;width:100%;flex-direction:column;gap:0;padding:6px 0 10px}
  nav.main.open{display:flex}
  nav.main a{display:block;padding:12px 4px;border-top:1px solid rgba(255,255,255,.15);min-height:44px}
  .tool-grid{grid-template-columns:1fr}
  .calculator input,.calculator select,button.calc-btn,.btn{min-height:48px}
  button.calc-btn{width:100%}
  .ad-slot{min-height:250px}
}
@media(min-width:761px) and (max-width:1020px){
  .tool-grid{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:1021px){
  .tool-grid{grid-template-columns:repeat(3,1fr)}
}
/* Category hubs */
.hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin:24px 0}
@media(max-width:760px){.hub-grid{grid-template-columns:1fr}}
.category-block{margin:28px 0}
.category-block h2{margin-bottom:4px}
.category-block h2 a{color:var(--navy)}
.dropzone{border:2px dashed var(--blue);border-radius:var(--radius);padding:28px 18px;text-align:center;background:#f0f6fb;margin:18px 0;cursor:pointer}
.dropzone.dragover{background:#dcebfb}
.file-list{font-size:.95rem;margin:12px 0}
.progress{height:10px;background:#e3ebf1;border-radius:6px;overflow:hidden;margin:10px 0}
.progress > div{height:100%;background:var(--green);width:0%}
textarea.code-output{width:100%;min-height:160px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.88rem;padding:10px;border:1px solid #b9c9d6;border-radius:8px}
pre.code-output{white-space:pre-wrap;word-break:break-word;background:#0f2a44;color:#dff0ff;padding:14px;border-radius:8px;font-size:.85rem;overflow-x:auto}
canvas.preview{max-width:100%;border:1px solid var(--border);border-radius:8px}