/* Global resets & type */
:root{
  --bg:#fbfbfb;
  --card:#ffffff;
  --muted:#6b7280;
  --text:#0f172a;
  --accent:#2563eb;
  --accent-2:#0ea5a4;
  --border:rgba(15,23,42,0.06);
  --radius:10px;
  --max-width:1100px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.45;
}
.container{max-width:var(--max-width);margin:0 auto;padding:0 1rem}
.page{display:flex;flex-direction:column;min-height:100vh}
.site-header{background:transparent;padding:1rem 0}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:700;color:var(--text);text-decoration:none;font-size:1.05rem}
.nav a{margin-left:1rem;color:var(--muted);text-decoration:none;font-weight:600}
.nav a:hover{color:var(--text)}
.hero{padding:4rem 0 2.5rem;background:linear-gradient(180deg, rgba(37,99,235,0.06), transparent);border-bottom:1px solid var(--border)}
.hero h1{margin:0 0 .5rem;font-size:clamp(1.6rem, 3.2vw, 2.4rem);line-height:1.05}
.tag{color:var(--muted);margin:0 0 1rem}
.cta-row{margin-top:1rem}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:.6rem .9rem;border-radius:8px;border:none;text-decoration:none;font-weight:700;cursor:pointer}
.btn:hover{filter:brightness(.95)}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid rgba(37,99,235,0.12)}
.projects{padding:2rem 0}
.projects h2{margin-top:.25rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem;margin-top:1rem;align-items:stretch}
.card{background:var(--card);padding:1rem;border-radius:var(--radius);box-shadow:0 6px 18px rgba(15,23,42,0.06);border:1px solid var(--border);height:100%}
.card h3{margin:0 0 .5rem;font-size:1.05rem;line-height:1.25}
.card p{margin:.25rem 0}
.muted{color:var(--muted);font-size:.95rem}
.more{margin-top:1rem}
.about,.contact{padding:1.5rem 0}
.site-footer{margin-top:auto;padding:1.5rem 0;border-top:1px solid var(--border);background:transparent}
.footer-inner{display:flex;align-items:center;justify-content:space-between;color:var(--muted)}
.nav-footer a{margin-left:1rem;color:var(--muted);text-decoration:none}
.nav-footer a:hover{color:var(--text)}
.card form label{display:block;margin-bottom:.75rem;color:var(--text)}
input[type=number],input[type=text],input[type=email],select,textarea{
  width:100%;padding:.6rem .75rem;border-radius:8px;border:1px solid var(--border);background:transparent;font-size:1rem;color:var(--text)
}
input::placeholder{color:#9ca3af}
#results strong{color:var(--text)}
.term-buttons{display:flex;gap:.5rem}
.term-btn{background:transparent;border:1px solid var(--border);padding:.4rem .6rem;border-radius:8px;cursor:pointer;font-weight:700;color:var(--muted)}
.term-btn:hover{color:var(--text);border-color:rgba(15,23,42,0.12)}
.term-btn:active{transform:translateY(1px)}
.down-toggle{display:flex;border:1px solid var(--border);border-radius:8px;overflow:hidden}
.toggle-btn{padding:.45rem .7rem;background:transparent;border:0;cursor:pointer;font-weight:700;color:var(--muted)}
.toggle-btn.is-active{background:var(--accent);color:#fff}
.term-btn.is-active{background:var(--accent);color:#fff;border-color:transparent}
.currency-input{text-align:right;font-variant-numeric:tabular-nums}
.currency-input-left{text-align:left;font-variant-numeric:tabular-nums}
.num-input-left{text-align:left;font-variant-numeric:tabular-nums}

/* Responsive */
@media (max-width:900px){
  .grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .header-inner{flex-direction:row;gap:.5rem}
  .nav{display:none}
  .grid{grid-template-columns:1fr}
  .hero{padding:3rem 0}
}
/* Small utilities */
.tag{font-size:1rem}
.card small{color:var(--muted)}
a{color:var(--accent)}
/* make forms and buttons consistent in mortgage page */
form.card{display:block}
form.card p{margin:1rem 0}
label{font-weight:600}
button.btn{appearance:none}

/* small form tweaks */
label small{display:block;margin-top:.35rem}
input[type=number]{max-width:100%}

/* tool category headings inside grid */
.category-heading{grid-column:1/-1;margin:1.35rem 0 .25rem;font-size:.8rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.category-heading:first-child{margin-top:.25rem}

/* inline unit select (file-size, etc.) */
.input-with-unit{display:flex;gap:.5rem;margin-top:.4rem}
.input-with-unit input{flex:1}
.input-with-unit select,.unit-select{padding:.6rem .5rem;border-radius:8px;border:1px solid var(--border);background:transparent;font-size:.95rem;color:var(--text)}

/* result table (unit converter) */
.result-table{width:100%;border-collapse:collapse;margin-top:.5rem;font-size:.95rem}
.result-table td{padding:.2rem .5rem}
.result-table td:last-child{text-align:right;font-variant-numeric:tabular-nums}