/* TDEE Calculator – minimalist stylesheet (no dependencies) */
:root{
  --bg:#ffffff; --ink:#1a1a1a; --muted:#6b6b6b; --line:#e6e6e6; --soft:#f6f6f5;
  --accent:#1e6f4f; --accent-soft:#eef5f1;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --w:720px; --r:8px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.65;color:var(--ink);background:var(--bg);overflow-wrap:break-word}
a{color:var(--accent);text-underline-offset:2px}
img,svg{max-width:100%;height:auto}
code{font-family:inherit;font-size:.95em;background:var(--soft);padding:.1em .35em;border-radius:4px}
[hidden]{display:none!important}

.wrap,.container{max-width:var(--w);margin:0 auto;padding:0 1.25rem}
.container{padding-top:3rem;padding-bottom:4rem}

/* header */
.site-header{border-bottom:1px solid var(--line)}
.header-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem 1.5rem;padding-top:1rem;padding-bottom:1rem}
.brand{font-weight:700;color:var(--ink);text-decoration:none}
.nav{display:flex;flex-wrap:wrap;gap:.25rem 1.1rem}
.nav a{color:var(--muted);text-decoration:none;font-size:.95rem}
.nav a:hover,.nav a[aria-current="page"]{color:var(--accent)}
.nav a[aria-current="page"]{font-weight:600}

/* type */
h1{font-size:2.1rem;line-height:1.2;margin:0 0 .75rem;letter-spacing:-.01em}
h2{font-size:1.35rem;line-height:1.3;margin:2.75rem 0 .75rem}
h3{font-size:1.05rem;margin:1.75rem 0 .5rem}
p{margin:0 0 1rem}
.hero{margin-bottom:2rem}
.lede{color:var(--muted);font-size:1.05rem}
@media (max-width:600px){h1{font-size:1.7rem}.container{padding-top:2rem}}

/* calculator: form + results stacked */
.tool{display:grid;gap:1.5rem}
.card,.results{border:1px solid var(--line);border-radius:var(--r);padding:1.5rem;min-width:0}
.results h2:first-child,.results [data-out] > h2:first-child{margin-top:0}

fieldset{border:0;margin:0 0 1.25rem;padding:0;min-width:0}
legend,label{display:block;font-size:.9rem;font-weight:600;margin:0 0 .4rem;padding:0}
.field{margin-bottom:1.25rem;min-width:0}
.row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.row.pair{gap:.5rem}
@media (max-width:480px){.row:not(.pair){grid-template-columns:1fr;gap:0}}
input[type="number"],select{width:100%;min-width:0;font:inherit;font-size:1rem;padding:.65rem .75rem;border:1px solid #d4d4d4;border-radius:6px;background:#fff;color:var(--ink)}
input[type="number"]:focus,select:focus{outline:2px solid var(--accent);outline-offset:0;border-color:var(--accent)}
.radio-row{display:flex;flex-wrap:wrap;gap:.5rem}
.radio-row label{display:flex;align-items:center;gap:.45rem;margin:0;font-weight:500;font-size:.95rem;border:1px solid #d4d4d4;border-radius:6px;padding:.45rem .85rem;cursor:pointer}
.radio-row input{accent-color:var(--accent);margin:0}
.radio-row label:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
.help{font-size:.85rem;color:var(--muted);margin:.4rem 0 0}
.btn{display:block;width:100%;font:inherit;font-weight:600;color:#fff;background:var(--accent);border:0;border-radius:6px;padding:.8rem 1rem;cursor:pointer}
.btn:hover{filter:brightness(.92)}

/* results */
.results{background:var(--soft);border-color:var(--soft)}
.results-empty{color:var(--muted);text-align:center;margin:0;padding:1rem 0}
.big-number{font-size:2.25rem;font-weight:700;line-height:1.2;color:var(--accent);display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem}
.unit-note{font-size:.9rem;font-weight:400;color:var(--muted)}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:.75rem;margin:1rem 0 1.5rem}
.stat{background:#fff;border-radius:6px;padding:.9rem;text-align:center}
.stat .v{font-size:1.3rem;font-weight:700;color:var(--accent)}
.stat .k{font-size:.8rem;color:var(--muted)}
#tdee-table,#bmr-table,#def-table{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.data{width:100%;border-collapse:collapse;margin:.5rem 0 1rem;font-size:.92rem}
table.data th,table.data td{padding:.55rem .5rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.data th{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
@media (max-width:480px){table.data{font-size:.82rem}table.data th,table.data td{padding:.45rem .3rem}}
.macro-bar{display:flex;height:10px;border-radius:5px;overflow:hidden;margin:.5rem 0 .75rem;background:var(--line)}
.macro-bar span{display:block;height:100%}
.mb-p,.lg-p{background:var(--accent)}.mb-f,.lg-f{background:#9bbfae}.mb-c,.lg-c{background:#c9c9c9}
.legend{display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;font-size:.85rem;color:var(--muted);margin-bottom:1rem}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:.35rem}
.badge{display:inline-block;border-radius:999px;padding:.15rem .7rem;font-size:.85rem;font-weight:600;background:#fff;color:var(--ink)}
.badge.healthy{color:var(--accent)}.badge.over{color:#9a6200}.badge.obese,.badge.under{color:#b3261e}

/* content */
.prose{margin-top:1rem}
.prose ul{padding-left:1.25rem}.prose li{margin-bottom:.4rem}
.faq details{border-bottom:1px solid var(--line);padding:1rem 0}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{margin:.6rem 0 0;color:#333}
.note{background:var(--soft);border-radius:6px;padding:.9rem 1rem;font-size:.9rem;color:var(--muted)}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:2rem 0;font-size:.9rem;color:var(--muted)}
.footer-nav{display:flex;flex-wrap:wrap;gap:.25rem 1.25rem;margin-bottom:.5rem}
.footer-nav a{color:var(--muted);text-decoration:none}
.footer-nav a:hover{color:var(--accent)}
.copy{margin:0}
/* Visible keyboard focus for all interactive elements */
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}