/* ==========================================================================
   LazyTools — design system. No external fonts, images or scripts.
   Everything is inline/system so the site loads instantly anywhere.
   ========================================================================== */
:root{
  --bg:#0a0f1e; --surface:#111831; --surface-2:#182142; --border:#263252;
  --text:#e9edf7; --muted:#a3aec9; --accent:#f5b53f; --accent-2:#8fa4ff;
  --success:#4ade80; --warning:#fbbf24; --danger:#f87171;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --radius:14px; --radius-sm:9px;
}
html.light{
  --bg:#f6f8fc; --surface:#ffffff; --surface-2:#eef2fa; --border:#dfe5f1;
  --text:#111827; --muted:#5b6577;
  --shadow:0 10px 24px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--text); line-height:1.65;
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
.container{max-width:1080px;margin:0 auto;padding:0 20px}
a{color:var(--accent-2);text-decoration:none}
a:hover{text-decoration:underline}
p{margin:.6em 0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;border-bottom:1px solid var(--border);
  background:rgba(10,15,30,.86);backdrop-filter:blur(10px);
}
html.light .site-header{background:rgba(246,248,252,.88)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 20px;max-width:1080px;margin:0 auto}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.12rem;color:var(--text)}
.logo svg{display:block}
.logo .dot{color:var(--accent)}
.nav{display:flex;align-items:center;gap:6px}
.nav a{color:var(--muted);font-weight:600;font-size:.92rem;padding:8px 12px;border-radius:99px}
.nav a:hover{color:var(--text);background:var(--surface-2);text-decoration:none}
.nav a.nav-a-active{color:var(--accent)}
.theme-btn{
  background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  border-radius:99px;padding:7px 13px;cursor:pointer;font-size:.95rem;line-height:1;
}
.theme-btn:hover{border-color:var(--accent)}

/* ---------- hero ---------- */
.hero{padding:58px 0 26px;text-align:center}
.hero h1{font-size:clamp(1.9rem,4.5vw,2.7rem);line-height:1.15;margin:0 0 12px;font-weight:800}
.hero h1 .grad{
  background:linear-gradient(90deg,var(--accent),#f2920b);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{color:var(--muted);max-width:640px;margin:0 auto 22px;font-size:1.05rem}
.searchbox{position:relative;max-width:520px;margin:0 auto}
.searchbox input{
  width:100%;padding:14px 18px 14px 44px;border-radius:99px;font-size:1rem;
  border:1px solid var(--border);background:var(--surface);color:var(--text);
}
.searchbox .mag{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:1.05rem}
.hero-stats{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:22px;color:var(--muted);font-size:.88rem}
.hero-stats b{color:var(--accent)}

/* ---------- chips ---------- */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0 14px}
.chip{
  background:var(--surface);border:1px solid var(--border);color:var(--muted);
  padding:7px 15px;border-radius:99px;cursor:pointer;font:inherit;font-size:.88rem;font-weight:600;
}
.chip:hover{border-color:var(--accent);color:var(--text)}
.chip.active{background:var(--accent);border-color:var(--accent);color:#1a1205}

/* ---------- tool grid ---------- */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:15px;margin:16px 0 8px}
.tool-card{
  display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px;color:var(--text);transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.tool-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow);text-decoration:none}
.tool-card .ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:22px;background:linear-gradient(135deg,rgba(245,181,63,.18),rgba(143,164,255,.18));
  border:1px solid var(--border);margin-bottom:12px;
}
.tool-card h3{margin:0 0 6px;font-size:1.02rem;font-weight:700}
.tool-card p{margin:0;color:var(--muted);font-size:.88rem}
.no-results{display:none;text-align:center;color:var(--muted);padding:34px 0}

/* ---------- page / tool layout ---------- */
.breadcrumb{font-size:.85rem;color:var(--muted);margin:20px 0 4px}
.breadcrumb a{color:var(--muted)}
.tool-hero h1{margin:2px 0 8px;font-size:clamp(1.5rem,3.4vw,2.1rem);font-weight:800}
.tool-hero p.lead{color:var(--muted);max-width:760px;margin:0 0 6px}
.badge{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.04em;
  padding:3px 11px;border-radius:999px;background:rgba(245,181,63,.14);color:var(--accent);
  margin-bottom:8px;
}

/* ---------- panel & forms ---------- */
.panel{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);margin-top:18px;
}
.panel-title{font-weight:700;font-size:1.02rem;margin:0 0 14px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:15px}
.field label{display:block;font-size:.83rem;font-weight:700;margin-bottom:6px;color:var(--muted)}
input,select,textarea{
  width:100%;padding:11px 13px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--surface-2);color:var(--text);font:inherit;
}
textarea{resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);border-color:transparent}
input[type="range"]{padding:0;accent-color:var(--accent);background:transparent;border:none}
.check{display:flex;align-items:center;gap:9px;font-size:.93rem;color:var(--text);margin:8px 0}
.check input{width:auto}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.btn-primary{
  background:linear-gradient(135deg,#f5b53f,#f2920b);color:#1a1205;font-weight:800;border:none;
  cursor:pointer;padding:12px 22px;border-radius:var(--radius-sm);font-size:.98rem;
}
.btn-primary:hover{filter:brightness(1.07)}
.btn-ghost{
  background:var(--surface-2);border:1px solid var(--border);color:var(--text);cursor:pointer;
  padding:11px 17px;border-radius:var(--radius-sm);font-size:.93rem;font-weight:600;
}
.btn-ghost:hover{border-color:var(--accent)}

/* ---------- results ---------- */
.results{display:none;margin-top:22px}
.results.show{display:block}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.stat{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 10px;text-align:center}
.stat b{display:block;font-size:1.35rem;color:var(--accent);line-height:1.3;word-break:break-word}
.stat span{font-size:.78rem;color:var(--muted)}
.big-result{font-size:1.3rem;font-weight:800;color:var(--accent);margin:6px 0 0}
.note{font-size:.84rem;color:var(--muted);margin-top:12px}
.output-box{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:1.12rem;font-weight:600;
  background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:15px;word-break:break-all;text-align:center;
}
.strength-bar{height:9px;border-radius:99px;background:var(--surface-2);overflow:hidden;margin-top:12px;border:1px solid var(--border)}
.strength-bar i{display:block;height:100%;width:0;transition:width .3s,background .3s;background:var(--danger)}
.bar-stack{display:flex;height:26px;border-radius:8px;overflow:hidden;margin-top:16px;border:1px solid var(--border)}
.bar-stack i{display:block;height:100%}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:.82rem;color:var(--muted);margin-top:8px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px}
table.simple{width:100%;border-collapse:collapse;font-size:.92rem;margin-top:14px}
table.simple th,table.simple td{padding:8px 10px;border-bottom:1px solid var(--border);text-align:left}
table.simple th{color:var(--muted);font-size:.76rem;text-transform:uppercase;letter-spacing:.05em}
.sleep-list{list-style:none;margin:0;padding:0}
.sleep-list li{
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  padding:12px 15px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--surface-2);margin-bottom:9px;
}
.sleep-list b{font-size:1.15rem;color:var(--accent)}
.sleep-list span{color:var(--muted);font-size:.88rem}
.gauge{position:relative;height:11px;border-radius:99px;margin-top:18px;
  background:linear-gradient(90deg,#60a5fa 0 18.5%,#4ade80 18.5% 25%,#fbbf24 25% 30%,#f87171 30% 100%)}
.gauge i{position:absolute;top:-4px;width:4px;height:19px;background:var(--text);border-radius:2px;left:50%;transition:left .25s}
.gauge-labels{display:flex;justify-content:space-between;font-size:.74rem;color:var(--muted);margin-top:6px}
.mini{width:74px;padding:6px 8px;display:inline-block}

/* ---------- content sections ---------- */
h2.section{margin:38px 0 10px;font-size:1.28rem;font-weight:800}
.content{max-width:780px;color:var(--text)}
.content p{opacity:.93}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700}
.faq details p{color:var(--muted);margin:10px 0 0}
.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:15px;margin-top:16px}
.why{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.why b{display:block;margin-bottom:6px;font-size:1rem}
.why p{margin:0;color:var(--muted);font-size:.9rem}

/* ---------- ads ---------- */
.ad-slot{
  margin:26px auto;min-height:92px;border:1.5px dashed var(--border);border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;color:var(--muted);
  font-size:.75rem;letter-spacing:.09em;text-transform:uppercase;overflow:hidden;
}
.ad-slot .ad-demo{opacity:.65}
.ad-slot.live{border:none;min-height:0;display:block}
/* An unfilled slot collapses completely. Without this the dashed placeholder box and its
   "add code in assets/ads.js" caption would render on every page of the live site. */
.ad-slot.empty{display:none}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--border);margin-top:56px;padding:38px 0 30px}
.footer-grid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.footer-grid h4{margin:0 0 10px;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.footer-grid ul{list-style:none;margin:0;padding:0}
.footer-grid li{margin:7px 0}
.footer-grid a{color:var(--muted);font-size:.93rem}
.footer-grid a:hover{color:var(--text)}
.footer-bottom{margin-top:26px;padding-top:18px;border-top:1px solid var(--border);color:var(--muted);font-size:.83rem;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---------- invoice (printable) ---------- */
.invoice-sheet{
  background:#fff;color:#111;border-radius:var(--radius);padding:34px;margin-top:18px;
  box-shadow:var(--shadow);font-size:.95rem;
}
.invoice-sheet label{display:block;font-size:.78rem;font-weight:800;color:#667;letter-spacing:.05em;text-transform:uppercase;margin-bottom:4px}
.invoice-sheet input,.invoice-sheet textarea{
  background:transparent;border:none;border-radius:4px;color:#111;padding:4px 6px;
}
.invoice-sheet input:focus,.invoice-sheet textarea:focus{outline:2px solid #f5b53f;background:#fffdf3}
.inv-head{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;border-bottom:3px solid #111;padding-bottom:16px}
.inv-logo{font-size:1.9rem;font-weight:900;letter-spacing:.12em}
.inv-dates{text-align:right}
.inv-dates input{width:150px;font-size:.95rem}
.inv-parties{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:20px 0}
.inv-parties textarea{width:100%;resize:vertical}
.inv-table{width:100%;border-collapse:collapse;margin-top:6px}
.inv-table th{font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;color:#667;text-align:left;border-bottom:2px solid #111;padding:8px 6px}
.inv-table td{padding:6px;border-bottom:1px solid #e5e7eb;vertical-align:top}
.inv-table input{width:100%;font-size:.95rem}
.inv-table td:nth-child(2) input,.inv-table td:nth-child(3) input{text-align:right}
.inv-table td:nth-child(2) input{width:70px}
.inv-table td:nth-child(3) input{width:100px}
.inv-amt{text-align:right;font-weight:600;white-space:nowrap;padding-top:12px}
.inv-x{background:none;border:none;color:#b45;color:#c0392b;cursor:pointer;font-size:1rem;padding:4px}
.inv-totals{margin-left:auto;max-width:290px;margin-top:14px}
.inv-totals>div{display:flex;justify-content:space-between;align-items:center;padding:7px 6px;border-bottom:1px solid #e5e7eb}
.inv-totals .inv-total{border-top:3px solid #111;border-bottom:none;font-size:1.15rem;font-weight:800}
.inv-notes{margin-top:18px}
@media print{
  body *{visibility:hidden}
  #invoice-sheet,#invoice-sheet *{visibility:visible}
  #invoice-sheet{position:absolute;left:0;top:0;width:100%;border-radius:0;box-shadow:none;margin:0;padding:0}
  .no-print{display:none!important}
  .invoice-sheet input,.invoice-sheet textarea{background:transparent!important}
}

/* ---------- recommended gear (Amazon Associates) ---------- */
/* Only rendered on tools that define a "gear" list — see gear_block() in _generator/build.py.
   The disclosure sits ABOVE the links on purpose: Amazon's Operating Agreement and the FTC both
   require the affiliate relationship to be clear before the reader clicks, not buried below. */
.gear-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.gear-list li{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px 18px;
}
.gear-link{font-weight:700}
.gear-why{display:block;color:var(--muted);font-size:.88rem;margin-top:4px}
.gear-disclosure{color:var(--muted);font-size:.84rem;margin:0 0 12px}

/* ---------- misc ---------- */
.center{text-align:center}
.mt0{margin-top:0}
@media (max-width:640px){
  .hero{padding:40px 0 18px}
  .panel{padding:20px}
  .inv-parties{grid-template-columns:1fr}
}