/* ============================================================
   CxO Tools — Shared Design System
   Self-contained dark UI (no Tailwind dependency).
   ============================================================ */
:root{
  --bg:#0f0f10;
  --bg-2:#131313;
  --card:#1a1a1c;
  --card-2:#202023;
  --border:#2a2a2e;
  --border-2:#36363b;
  --text:#e8e8ea;
  --muted:#9a9aa2;
  --muted-2:#6c6c75;
  --blue:#0066cc;
  --blue-600:#0a73e0;
  --blue-400:#3b9bff;
  --green:#2ecc71;
  --amber:#f5a623;
  --red:#ff5252;
  --radius:14px;
  --radius-sm:10px;
  --maxw:1200px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --mono:'JetBrains Mono','SFMono-Regular',ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  line-height:1.55;
}
a{color:var(--blue-400);text-decoration:none}
a:hover{color:var(--blue)}
img{max-width:100%}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .4em}
h1{font-size:2rem;font-weight:800;letter-spacing:-.02em}
h2{font-size:1.4rem;font-weight:700}
h3{font-size:1.1rem;font-weight:700}
p{margin:0 0 1rem;color:var(--muted)}
code,kbd,pre{font-family:var(--mono)}
hr{border:none;border-top:1px solid var(--border);margin:2rem 0}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.narrow{max-width:860px}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.center{text-align:center}
.mono{font-family:var(--mono)}
.nowrap{white-space:nowrap}
.hidden{display:none!important}

/* ---------- Top Nav ---------- */
.cxo-nav{position:sticky;top:0;z-index:60;background:rgba(15,15,16,.82);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.cxo-nav .inner{display:flex;align-items:center;gap:18px;height:64px;
  max-width:var(--maxw);margin:0 auto;padding:0 20px}
.cxo-nav .brand{display:flex;align-items:center;gap:9px;font-weight:800;color:#fff;font-size:1.05rem}
.cxo-nav .brand b{color:var(--blue-400)}
.cxo-nav .links{display:flex;gap:4px;margin-left:8px}
.cxo-nav .links a{color:var(--muted);padding:8px 12px;border-radius:8px;font-size:.9rem;font-weight:500}
.cxo-nav .links a:hover{color:#fff;background:var(--card)}
.cxo-nav .spacer{flex:1}
.nav-search{display:flex;align-items:center;gap:10px;background:var(--bg-2);
  border:1px solid var(--border);color:var(--muted);border-radius:10px;
  padding:9px 12px;min-width:200px;cursor:pointer;font-size:.88rem}
.nav-search:hover{border-color:var(--border-2)}
.nav-search .kbd{margin-left:auto;border:1px solid var(--border-2);border-bottom-width:2px;
  border-radius:6px;padding:1px 6px;font-size:.72rem;color:var(--muted)}
.nav-burger{display:none;background:none;border:none;color:#fff;font-size:1.2rem;cursor:pointer}
.it-dot{color:var(--blue-400);font-weight:800}
@media(max-width:820px){
  .cxo-nav .links{display:none}
  .nav-search span.label{display:none}
  .nav-search{min-width:auto}
  .nav-burger{display:block}
}

/* ---------- Hero ---------- */
.hero{padding:64px 0 36px;border-bottom:1px solid var(--border);
  background:radial-gradient(900px 400px at 70% -10%,rgba(0,102,204,.18),transparent 60%)}
.hero h1{font-size:clamp(2rem,4vw,3rem)}
.hero p{font-size:1.1rem;max-width:640px}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--blue-400);margin-bottom:14px}

/* ---------- Layout helpers ---------- */
.section{padding:40px 0}
.grid{display:grid;gap:16px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.cols-3,.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.cols-2,.cols-3,.cols-4{grid-template-columns:1fr}}

/* ---------- Tool cards (catalog) ---------- */
.tool-card{display:block;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px;transition:.18s;height:100%}
.tool-card:hover{border-color:var(--blue);transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(0,0,0,.4)}
.tool-card .ic{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;
  justify-content:center;background:rgba(0,102,204,.12);color:var(--blue-400);font-size:1.05rem;margin-bottom:12px}
.tool-card h3{color:#fff;font-size:1rem;margin:0 0 4px}
.tool-card p{font-size:.86rem;margin:0;color:var(--muted)}
.tool-card .tag{display:inline-block;margin-top:10px;font-size:.72rem;color:var(--muted-2);
  border:1px solid var(--border);border-radius:999px;padding:1px 9px}

/* category pill row */
.cat-row{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 28px}
.cat-pill{border:1px solid var(--border);background:var(--card);color:var(--muted);
  border-radius:999px;padding:7px 15px;font-size:.85rem;cursor:pointer;font-weight:500}
.cat-pill:hover{color:#fff;border-color:var(--border-2)}
.cat-pill.active{background:var(--blue);border-color:var(--blue);color:#fff}

.cat-head{display:flex;align-items:center;gap:10px;margin:34px 0 4px}
.cat-head i{color:var(--blue-400)}
.cat-head h2{margin:0}
.cat-head .count{color:var(--muted-2);font-size:.85rem;font-weight:500}

/* ---------- Tool page scaffolding ---------- */
.tool-head{padding:34px 0 26px;border-bottom:1px solid var(--border);
  background:radial-gradient(700px 300px at 80% -40%,rgba(0,102,204,.14),transparent 60%)}
.breadcrumb{font-size:.82rem;color:var(--muted-2);margin-bottom:12px}
.breadcrumb a{color:var(--muted)}
.tool-head .ic{width:48px;height:48px;border-radius:12px;display:inline-flex;align-items:center;
  justify-content:center;background:rgba(0,102,204,.14);color:var(--blue-400);font-size:1.3rem;margin-bottom:14px}
.tool-body{padding:30px 0 60px}

/* panel / card */
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.panel + .panel{margin-top:18px}
.panel h2,.panel h3{color:#fff}

/* ---------- Forms ---------- */
label{display:block;font-size:.85rem;font-weight:600;color:var(--text);margin:0 0 6px}
.hint{font-size:.78rem;color:var(--muted-2);font-weight:400;margin-top:4px}
input[type=text],input[type=number],input[type=url],input[type=email],input[type=password],
input[type=search],select,textarea{
  width:100%;background:var(--bg-2);border:1px solid var(--border);color:var(--text);
  border-radius:var(--radius-sm);padding:11px 13px;font-size:.95rem;font-family:inherit;outline:none;transition:.15s}
textarea{resize:vertical;min-height:120px;font-family:var(--mono);font-size:.88rem;line-height:1.5}
input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,102,204,.2)}
input::placeholder,textarea::placeholder{color:var(--muted-2)}
select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239a9aa2' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:34px}
.field{margin-bottom:16px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.row > *{flex:1;min-width:140px}
.inline{display:flex;gap:10px;align-items:center}
.check{display:flex;align-items:center;gap:9px;font-weight:500;cursor:pointer;color:var(--text);font-size:.9rem}
.check input{width:auto}

/* range */
input[type=range]{width:100%;accent-color:var(--blue)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--blue);color:#fff;border:none;
  border-radius:var(--radius-sm);padding:11px 20px;font-size:.92rem;font-weight:600;cursor:pointer;
  font-family:inherit;transition:.15s}
.btn:hover{background:var(--blue-600)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.secondary{background:var(--card-2);border:1px solid var(--border-2);color:var(--text)}
.btn.secondary:hover{background:var(--card);border-color:var(--blue)}
.btn.ghost{background:transparent;border:1px solid var(--border-2);color:var(--muted)}
.btn.sm{padding:7px 13px;font-size:.82rem}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

/* copy button */
.copy-btn{background:var(--card-2);border:1px solid var(--border);color:var(--muted);
  border-radius:8px;padding:5px 10px;font-size:.78rem;cursor:pointer;font-family:inherit}
.copy-btn:hover{color:#fff;border-color:var(--blue)}

/* ---------- Results / output ---------- */
.result{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:16px;margin-top:16px}
.result-big{font-size:1.8rem;font-weight:800;color:#fff;font-family:var(--mono)}
output,.out{font-family:var(--mono)}
pre.out{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px;overflow:auto;white-space:pre-wrap;word-break:break-word;font-size:.85rem;color:var(--text);margin:0}

/* stat grid */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.stat{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px}
.stat .k{font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted-2)}
.stat .v{font-size:1.3rem;font-weight:700;color:#fff;font-family:var(--mono);margin-top:3px;word-break:break-all}

/* tables */
table.data{width:100%;border-collapse:collapse;font-size:.88rem}
table.data th,table.data td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}
table.data th{color:var(--muted-2);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}
table.data td{color:var(--text);vertical-align:top}
table.data td.mono,table.data .mono{font-family:var(--mono);font-size:.84rem;word-break:break-all}
table.data tr:last-child td{border-bottom:none}

/* badges */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:.74rem;font-weight:600;
  padding:2px 9px;border-radius:999px;border:1px solid var(--border-2);color:var(--muted)}
.badge.ok{background:rgba(46,204,113,.12);border-color:rgba(46,204,113,.4);color:#5fe39b}
.badge.warn{background:rgba(245,166,35,.12);border-color:rgba(245,166,35,.4);color:#ffc15e}
.badge.bad{background:rgba(255,82,82,.12);border-color:rgba(255,82,82,.4);color:#ff8585}
.badge.info{background:rgba(59,155,255,.12);border-color:rgba(59,155,255,.4);color:#7bbcff}

/* alert */
.alert{border-radius:var(--radius-sm);padding:12px 14px;font-size:.88rem;border:1px solid var(--border);margin-top:14px}
.alert.error{background:rgba(255,82,82,.08);border-color:rgba(255,82,82,.35);color:#ff9d9d}
.alert.success{background:rgba(46,204,113,.08);border-color:rgba(46,204,113,.35);color:#7fe6ad}
.alert.note{background:rgba(59,155,255,.07);border-color:rgba(59,155,255,.3);color:#9fccff}

/* spinner */
.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.25);
  border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px}
@keyframes spin{to{transform:rotate(360deg)}}

/* meter bar */
.meter{height:8px;border-radius:999px;background:var(--card-2);overflow:hidden}
.meter > span{display:block;height:100%;border-radius:999px;transition:.3s}

/* related tools */
.related{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:14px}
.related a{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:13px 15px;color:var(--text);font-size:.9rem;font-weight:500;display:flex;align-items:center;gap:10px}
.related a:hover{border-color:var(--blue);color:#fff}
.related a i{color:var(--blue-400)}

/* ---------- Footer ---------- */
.cxo-footer{border-top:1px solid var(--border);background:var(--bg-2);margin-top:40px}
.cxo-footer .inner{max-width:var(--maxw);margin:0 auto;padding:40px 20px}
.cxo-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
@media(max-width:760px){.cxo-footer .cols{grid-template-columns:1fr 1fr}}
.cxo-footer h5{color:#fff;font-size:.95rem;margin:0 0 12px}
.cxo-footer a{display:block;color:var(--muted);font-size:.88rem;padding:3px 0}
.cxo-footer a:hover{color:#fff}
.cxo-footer .copy{border-top:1px solid var(--border);margin-top:28px;padding-top:20px;
  color:var(--muted-2);font-size:.82rem;text-align:center}

/* ---------- Command palette ---------- */
.cxo-palette-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);
  z-index:200;display:none;align-items:flex-start;justify-content:center;padding-top:12vh}
.cxo-palette-overlay.show{display:flex}
.cxo-palette{width:min(600px,94vw);background:var(--card);border:1px solid var(--border-2);
  border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.cxo-palette .pi{display:flex;align-items:center;gap:12px;padding:15px 18px;border-bottom:1px solid var(--border)}
.cxo-palette .pi i{color:var(--muted)}
.cxo-palette .pi input{border:none;background:none;padding:0;font-size:1.05rem}
.cxo-palette .pi input:focus{box-shadow:none}
.cxo-pres{max-height:54vh;overflow:auto}
.cxo-pres a{display:flex;gap:12px;align-items:center;padding:11px 18px;border-bottom:1px solid var(--border);color:var(--text)}
.cxo-pres a:hover,.cxo-pres a.sel{background:var(--card-2)}
.cxo-pres a .pic{width:30px;height:30px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:rgba(0,102,204,.12);color:var(--blue-400);font-size:.85rem;flex-shrink:0}
.cxo-pres a .pt{font-weight:600;font-size:.92rem}
.cxo-pres a .pd{font-size:.78rem;color:var(--muted-2)}
.cxo-pres a .pcat{margin-left:auto;font-size:.72rem;color:var(--muted-2);border:1px solid var(--border);
  border-radius:999px;padding:1px 9px;white-space:nowrap}
.cxo-pres .empty{padding:24px;text-align:center;color:var(--muted-2)}

/* back-to-top */
#cxoTop{position:fixed;bottom:22px;right:22px;width:44px;height:44px;border-radius:50%;
  background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.25s;z-index:50;border:none;cursor:pointer}
#cxoTop.show{opacity:1;pointer-events:auto}
#cxoTop:hover{background:var(--blue-600)}

/* utility spacing */
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}
.mb-0{margin-bottom:0}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}
.flex{display:flex}.gap{gap:12px}.wrap{flex-wrap:wrap}.aic{align-items:center}.jcb{justify-content:space-between}
.w-auto{width:auto}