/* ToolWillow — mobile-first, no frameworks. */
:root{
  --bg:#ffffff; --bg-soft:#f6f8fa; --card:#ffffff;
  --text:#0f172a; --muted:#526075; --line:#e3e9f0;
  --accent:#0f766e; --accent-dark:#0b5e58; --accent-soft:#e6f4f2;
  --warn:#b45309; --danger:#be123c; --ok:#15803d;
  --radius:12px; --shadow:0 1px 3px rgba(15,23,42,.08),0 4px 14px rgba(15,23,42,.06);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0c1220; --bg-soft:#111a2e; --card:#131c31;
    --text:#e8eef7; --muted:#9fb0c7; --line:#243049;
    --accent:#2dd4bf; --accent-dark:#5eead4; --accent-soft:#123b38;
    --shadow:0 1px 3px rgba(0,0,0,.4),0 4px 14px rgba(0,0,0,.3);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.6;font-size:1rem}
.wrap{max-width:1080px;margin:0 auto;padding:0 1.1rem}
main{padding-bottom:3rem}
h1,h2,h3{line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(1.7rem,4vw,2.5rem);margin:.4em 0}
h2{font-size:clamp(1.25rem,3vw,1.6rem);margin-top:2.2em}
a{color:var(--accent-dark)}
@media (prefers-color-scheme:dark){a{color:var(--accent)}}
img{max-width:100%;height:auto}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* header */
.site-header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;gap:1rem;padding:.7rem 1.1rem;max-width:1080px;margin:0 auto}
.brand{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--text);font-weight:800;font-size:1.15rem}
.brand-mark{color:var(--accent);display:inline-flex}
.main-nav{margin-left:auto}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:.4rem .6rem;color:var(--text);cursor:pointer}
.nav-menu{display:flex;gap:1.1rem;list-style:none;margin:0;padding:0;align-items:center}
.nav-menu a{text-decoration:none;color:var(--text);font-weight:600}
.nav-menu a:hover{color:var(--accent-dark)}
.has-sub{position:relative}
.sub-menu{display:none;position:absolute;top:100%;left:0;background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);list-style:none;margin:.4rem 0 0;padding:.5rem;min-width:220px}
.has-sub:hover .sub-menu,.has-sub:focus-within .sub-menu{display:block}
.sub-menu a{display:block;padding:.5rem .8rem;border-radius:8px}
.sub-menu a:hover{background:var(--bg-soft)}
.header-search{display:flex;gap:.3rem}
.header-search input{border:1px solid var(--line);border-radius:8px;padding:.45rem .7rem;width:170px;background:var(--bg);color:var(--text)}
.header-search button{border:1px solid var(--line);background:var(--bg-soft);border-radius:8px;padding:.3rem .55rem;cursor:pointer;color:var(--text)}

/* hero */
.hero{background:linear-gradient(180deg,var(--accent-soft),transparent);padding:3rem 0 2.5rem;text-align:center}
.kicker{text-transform:uppercase;font-size:.78rem;letter-spacing:.08em;color:var(--accent-dark);font-weight:700;margin:0}
@media (prefers-color-scheme:dark){.kicker{color:var(--accent)}}
.lede{font-size:1.12rem;color:var(--muted);max-width:640px;margin:1rem auto}
.hero-search{display:flex;gap:.5rem;justify-content:center;margin:1.5rem 0;flex-wrap:wrap}
.hero-search input{border:1px solid var(--line);border-radius:10px;padding:.7rem 1rem;font-size:1rem;min-width:min(320px,80vw);background:var(--card);color:var(--text)}
.btn{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:.7rem 1.3rem;font-size:1rem;font-weight:700;cursor:pointer;text-decoration:none;display:inline-block}
.btn:hover{background:var(--accent-dark)}
.btn-ghost{background:transparent;color:var(--accent-dark);border:1px solid var(--line)}
@media (prefers-color-scheme:dark){.btn-ghost{color:var(--accent)}}
.trust{display:flex;gap:2rem;justify-content:center;list-style:none;padding:0;margin:1.5rem 0 0;color:var(--muted);font-size:.95rem}
.trust strong{color:var(--text);font-size:1.2rem;display:block}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem;margin:1.5rem 0}
.tool-card,.cat-card{display:flex;gap:.9rem;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .12s ease}
.tool-card:hover,.cat-card:hover{transform:translateY(-2px)}
.tool-tile{flex:0 0 44px;width:44px;height:44px;border-radius:10px;background:var(--tile,#0f766e);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.3rem}
.tool-card-text strong,.cat-card strong{display:block;font-size:1.02rem}
.tool-card-text span,.cat-card span{color:var(--muted);font-size:.88rem}

/* page head, prose */
.page-head{margin:1.5rem 0}
.breadcrumbs ol{display:flex;gap:.5rem;list-style:none;padding:0;margin:1rem 0;font-size:.88rem;color:var(--muted);flex-wrap:wrap}
.breadcrumbs a{color:var(--muted);text-decoration:none}
.breadcrumbs a:hover{text-decoration:underline}
.breadcrumbs li+li::before{content:"›";margin-right:.5rem;color:var(--muted)}
.prose{max-width:720px}
.prose ul,.prose ol{padding-left:1.4rem}
.privacy-badge{background:var(--accent-soft);border:1px solid var(--line);border-radius:10px;padding:.8rem 1rem;font-size:.92rem;max-width:720px}
.note{font-size:.88rem;color:var(--muted)}

/* widget */
.widget{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.4rem;margin:1.5rem 0;max-width:720px}
.field{margin-bottom:1rem}
.field label,.field legend{display:block;font-weight:600;margin-bottom:.35rem;font-size:.95rem}
.field input[type=number],.field input[type=text],.field input[type=date],.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:.6rem .75rem;font-size:1rem;background:var(--bg);color:var(--text)}
.field input[type=range]{width:100%}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:.4rem;margin:.6rem 0}
.check,.radio{display:flex;align-items:center;gap:.5rem;font-weight:500;font-size:.95rem;margin:.3rem 0;cursor:pointer}
.check input,.radio input{width:1.1rem;height:1.1rem;accent-color:var(--accent)}
.result{margin-top:1.2rem;background:var(--bg-soft);border-radius:10px;padding:1rem;min-height:3rem}
.result:empty{display:none}
.result .big{font-size:1.6rem;font-weight:800;color:var(--accent-dark)}
@media (prefers-color-scheme:dark){.result .big{color:var(--accent)}}
.result table{width:100%;border-collapse:collapse;font-size:.95rem}
.result td{padding:.3rem 0;border-bottom:1px dashed var(--line)}
.result td:last-child{text-align:right;font-weight:700}
.sep{border:none;border-top:1px solid var(--line);margin:1.4rem 0}
.swatch{width:100%;height:64px;border-radius:10px;border:1px solid var(--line);margin:.8rem 0}
.pw-output{font-size:1.15rem;word-break:break-all;display:block;margin-bottom:.6rem}
.pw-actions{display:flex;gap:.6rem;margin-top:.8rem}
.strength{height:8px;background:var(--line);border-radius:99px;overflow:hidden;margin-top:.6rem}
.strength-bar{height:100%;width:0;background:var(--danger);transition:width .2s}
.gpa-row{display:grid;grid-template-columns:1fr 100px 40px;gap:.6rem;margin-bottom:.6rem;align-items:end}
.gpa-row .btn{padding:.5rem}
.ic-preview{margin-top:1rem}
.ic-preview img{border:1px solid var(--line);border-radius:10px;max-height:260px}
.steps{padding-left:1.4rem}
.steps li{margin-bottom:.4rem}
.guide{background:var(--bg-soft);border-radius:var(--radius);padding:1.2rem 1.4rem;margin:1.5rem 0;max-width:720px}
.guide h2{margin-top:0}
.faqs{max-width:720px}
.faqs details{border:1px solid var(--line);border-radius:10px;margin-bottom:.6rem;background:var(--card)}
.faqs summary{padding:.9rem 1.1rem;font-weight:700;cursor:pointer}
.faqs details p{padding:0 1.1rem 1rem;margin:0;color:var(--muted)}
.related{margin-top:2.5rem}
.contact-form{max-width:560px}

/* why grid */
.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;margin:1.5rem 0}
.why-grid>div{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem;box-shadow:var(--shadow)}
.why-grid h3{margin-top:0}

/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--bg-soft);margin-top:3rem;padding:2.5rem 0 1.5rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem}
.site-footer h2{font-size:.95rem;text-transform:uppercase;letter-spacing:.05em;margin-top:0}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:.4rem}
.site-footer a{color:var(--muted);text-decoration:none}
.site-footer a:hover{color:var(--accent-dark);text-decoration:underline}
.footer-brand p{color:var(--muted);font-size:.92rem}
.footer-bottom{margin-top:2rem;padding-top:1rem;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}

:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

@media (max-width:760px){
  .header-search{display:none}
  .nav-toggle{display:block}
  .main-nav{margin-left:0}
  .nav-menu{display:none;position:absolute;top:100%;right:1rem;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;padding:.8rem;min-width:220px;z-index:60}
  .nav-menu.open{display:flex}
  .sub-menu{position:static;box-shadow:none;border:none;display:block;padding:0 0 0 1rem}
  .header-inner{position:relative}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .trust{gap:1.2rem}
}
@media print{.site-header,.site-footer,.hero-search{display:none}}