/* ============================================================
   SEOptimizer — stylesheet
   Light theme matched to the brand logo:
   deep blue → bright blue wordmark, orange arrow accent, teal bars.
   ============================================================ */
:root{
  /* brand palette (sampled from logo) */
  --blue-900:#123a7a;   /* deep navy "SEO"        */
  --blue-700:#1c4c9c;
  --blue-600:#1e5fc0;
  --blue-500:#2e7ff0;   /* bright "ptimizer"      */
  --blue-400:#4f97ff;
  --teal:#16b3c6;       /* chart bars             */
  --orange:#f7801e;     /* arrow                  */
  --orange-600:#ee6c12;
  --orange-400:#ffa62b;

  /* surfaces */
  --bg:#eef2f9;         /* page background        */
  --bg-2:#f6f8fc;
  --panel:#ffffff;
  --panel-2:#f4f7fc;
  --border:#e1e8f2;
  --border-2:#d3dcea;

  /* text */
  --text:#16233c;       /* dark navy ink          */
  --muted:#64748b;
  --muted-2:#8a97a8;

  /* semantic */
  --primary:var(--blue-500);
  --primary-d:var(--blue-600);
  --green:#22b364; --amber:#f59e0b; --red:#e5484d;

  --radius:14px;
  --shadow-sm:0 1px 2px rgba(20,40,80,.06);
  --shadow:0 8px 30px rgba(28,76,156,.10);
  --grad-brand:linear-gradient(135deg,var(--blue-700),var(--blue-500));
  --grad-arrow:linear-gradient(135deg,var(--orange-400),var(--orange-600));
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.55;
  -webkit-font-smoothing:antialiased;
  background-image:radial-gradient(1100px 500px at 80% -8%,rgba(46,127,240,.10),transparent 60%),
                   radial-gradient(900px 480px at 0% 0%,rgba(247,128,30,.07),transparent 55%);
  background-attachment:fixed;
}
a{color:var(--blue-600);text-decoration:none}
a:hover{text-decoration:underline}
code{font-family:var(--mono);background:rgba(28,76,156,.08);color:var(--blue-700);padding:.1em .35em;border-radius:5px;font-size:.9em}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}

/* Header / nav */
.site-header{border-bottom:1px solid var(--border);background:rgba(255,255,255,.82);backdrop-filter:blur(10px);position:sticky;top:0;z-index:20;box-shadow:var(--shadow-sm)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:66px;gap:24px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center}
.brand:hover{text-decoration:none}
.brand-logo{height:42px;width:auto;display:block}
.main-nav{display:flex;gap:4px;flex-wrap:wrap}
.main-nav a{color:var(--muted);padding:8px 13px;border-radius:9px;font-size:14px;font-weight:600}
.main-nav a:hover{color:var(--blue-700);background:var(--panel-2);text-decoration:none}
.main-nav a.active{color:#fff;background:var(--grad-brand);box-shadow:0 3px 10px rgba(28,76,156,.28)}

.page{padding:36px 20px 90px}
.page-intro h1{font-size:32px;margin:0 0 8px;letter-spacing:-.02em;
  background:linear-gradient(120deg,var(--blue-900),var(--blue-500));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-intro p{color:var(--muted);max-width:780px;margin:0 0 26px;font-size:15.5px}

/* Buttons / forms */
.btn{display:inline-block;cursor:pointer;border:1px solid var(--border-2);background:var(--panel);color:var(--blue-700);
  padding:9px 16px;border-radius:10px;font-size:14px;font-weight:600;transition:.15s;box-shadow:var(--shadow-sm)}
.btn:hover{border-color:var(--blue-400);color:var(--blue-600);transform:translateY(-1px)}
.btn-primary{background:var(--grad-brand);border-color:transparent;color:#fff;box-shadow:0 6px 16px rgba(30,95,192,.30)}
.btn-primary:hover{color:#fff;filter:brightness(1.05)}
.field{margin-bottom:16px;display:flex;flex-direction:column}
.field.align-end{justify-content:flex-end}
label{font-size:13px;font-weight:600;margin-bottom:6px;color:#33445e}
label small{font-weight:400;color:var(--muted)}
input,textarea,select{font-family:inherit;font-size:14px;background:var(--bg-2);color:var(--text);
  border:1px solid var(--border-2);border-radius:10px;padding:10px 12px;width:100%;outline:none;transition:.15s}
input::placeholder,textarea::placeholder{color:var(--muted-2)}
input:focus,textarea:focus,select:focus{border-color:var(--blue-400);background:#fff;box-shadow:0 0 0 3px rgba(46,127,240,.18)}
textarea{resize:vertical}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0 16px}
.inline-form{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:24px}
.inline-form input,.inline-form select{width:auto;flex:1;min-width:220px}
.stacked-form{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:24px;box-shadow:var(--shadow)}
.advanced{margin-top:8px;border-top:1px solid var(--border);padding-top:8px}
.advanced summary{cursor:pointer;font-weight:600;font-size:14px;color:var(--blue-600);padding:6px 0}

/* Editor layout */
.editor{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:24px;align-items:start}
.editor-form{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.count{float:right;font-weight:500;color:var(--muted)}
.count.over{color:var(--red)}
.meter{height:5px;border-radius:3px;background:var(--border);margin-top:7px;position:relative;overflow:hidden}
.meter::after{content:"";position:absolute;inset:0;width:var(--w,0);border-radius:3px;transition:width .2s}
.meter.good::after{background:var(--green)}
.meter.warn::after{background:var(--orange)}
.meter.bad::after{background:var(--red)}

/* Previews */
.previews{position:sticky;top:86px}
.preview-tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.preview-tabs .tab{cursor:pointer;border:1px solid var(--border-2);background:var(--panel);color:var(--muted);
  padding:6px 13px;border-radius:20px;font-size:13px;font-weight:600;box-shadow:var(--shadow-sm)}
.preview-tabs .tab:hover{color:var(--blue-600);border-color:var(--blue-400)}
.preview-tabs .tab.active{background:var(--grad-brand);border-color:transparent;color:#fff}
.preview-panel{display:none}
.preview-panel.active{display:block;animation:fade .25s}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1}}
[data-bg]{background-size:cover;background-position:center;background-color:#dfe6f0}
[data-bg].empty{background:repeating-linear-gradient(45deg,#e9eef6,#e9eef6 12px,#dfe6f0 12px,#dfe6f0 24px)}

/* Google preview */
.g-card{background:#fff;color:#202124;border:1px solid var(--border);border-radius:12px;padding:18px 20px;font-family:arial,sans-serif;max-width:600px;box-shadow:var(--shadow)}
.g-url{display:flex;align-items:center;gap:6px;font-size:13px;color:#202124}
.g-fav{width:18px;height:18px;border-radius:50%;background:var(--grad-brand);display:inline-block}
.g-path{color:#5f6368}
.g-title{color:#1a0dab;font-size:20px;line-height:1.3;margin:4px 0 2px;overflow:hidden}
.g-desc{color:#4d5156;font-size:14px}

/* Facebook */
.fb-card{max-width:524px;border:1px solid #dadde1;border-radius:10px;overflow:hidden;background:#fff;color:#1c1e21;box-shadow:var(--shadow)}
.fb-img{aspect-ratio:1.91/1;width:100%}
.fb-meta{background:#f2f3f5;padding:10px 12px}
.fb-domain{font-size:12px;color:#606770;text-transform:uppercase}
.fb-title{font-weight:700;font-size:16px;margin:3px 0;line-height:1.3}
.fb-desc{font-size:14px;color:#606770;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}

/* Twitter / X */
.tw-card{position:relative;max-width:500px;border:1px solid #cfd9de;border-radius:16px;overflow:hidden;background:#000;box-shadow:var(--shadow)}
.tw-img{aspect-ratio:1.91/1;width:100%}
.tw-overlay{position:absolute;left:12px;bottom:34px;background:rgba(0,0,0,.77);color:#fff;font-size:13px;padding:2px 8px;border-radius:6px;max-width:90%}
.tw-meta{padding:8px 12px;background:#000}
.tw-domain{color:#71767b;font-size:13px}

/* LinkedIn */
.li-card{max-width:520px;border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;background:#fff;color:#000;box-shadow:var(--shadow)}
.li-img{aspect-ratio:1.91/1;width:100%}
.li-meta{padding:10px 12px}
.li-title{font-weight:700;font-size:15px;line-height:1.3}
.li-domain{font-size:12px;color:#666;margin-top:3px}

/* Slack / Discord shared card */
.sl-card,.dc-card{display:flex;gap:0;max-width:520px;box-shadow:var(--shadow);border-radius:8px}
.sl-bar{width:4px;background:#1264a3;border-radius:8px 0 0 8px;flex:0 0 4px}
.dc-bar{width:4px;background:#5865f2;border-radius:8px 0 0 8px;flex:0 0 4px}
.sl-body,.dc-body{background:#f8f8f8;border:1px solid #e0e0e0;border-left:none;border-radius:0 8px 8px 0;padding:10px 14px;color:#1d1c1d;flex:1}
.dc-body{background:#2b2d31;border-color:#202225;color:#dbdee1}
.sl-site,.dc-site{font-size:13px;color:#616061;font-weight:600}
.dc-site{color:#949ba4}
.sl-title{color:#1264a3;font-weight:700;margin:2px 0}
.dc-title{color:#00a8fc;font-weight:600;margin:2px 0}
.sl-desc,.dc-desc{font-size:14px}
.sl-img,.dc-img{margin-top:10px;border-radius:8px;aspect-ratio:1.91/1;max-width:360px}

/* Pinterest */
.pin-card{max-width:240px;background:#fff;border-radius:16px;overflow:hidden;color:#111;box-shadow:var(--shadow)}
.pin-img{aspect-ratio:2/3;width:100%}
.pin-title{font-weight:700;font-size:15px;padding:10px 12px 2px}
.pin-domain{font-size:12px;color:#767676;padding:0 12px 12px}

/* WhatsApp */
.wa-bubble{max-width:330px;background:#005c4b;border-radius:10px;padding:6px;color:#e9edef;box-shadow:var(--shadow)}
.wa-card{background:rgba(0,0,0,.25);border-radius:8px;overflow:hidden}
.wa-img{aspect-ratio:1.91/1;width:100%}
.wa-meta{padding:8px 10px}
.wa-title{font-weight:600;font-size:14px}
.wa-desc{font-size:13px;color:#cfd6da;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.wa-domain{font-size:12px;color:#8fa8a0;margin-top:3px}
.wa-text{padding:6px 8px 2px;font-size:14px}

/* Code output — dark slate panel for contrast on the light UI */
.codegen{margin-top:32px;background:#0f1b30;border:1px solid #16264a;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.codegen-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid #16264a;background:#0c1626}
.codegen-head h2{font-size:16px;margin:0;color:#e6eefc}
.codegen-head .btn{background:#16264a;border-color:#25406f;color:#cfe0ff}
.codegen-head .btn:hover{border-color:var(--blue-400)}
.code-out{margin:0;padding:18px;overflow:auto;max-height:460px}
.code-out code{display:block;background:none;padding:0;font-size:13px;line-height:1.65;color:#8ecbff;white-space:pre}

/* Analyzer */
.alert{padding:12px 16px;border-radius:10px;margin-bottom:20px;border:1px solid}
.alert-error{background:#fdECEC;border-color:#f6bcbe;color:#b42328}
.score-row{display:flex;gap:28px;align-items:center;flex-wrap:wrap;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:24px;box-shadow:var(--shadow)}
.score-dial{--score:0;width:120px;height:120px;border-radius:50%;display:grid;place-items:center;flex:0 0 120px;
  background:conic-gradient(var(--blue-500) calc(var(--score)*1%),var(--border) 0);position:relative}
.score-dial::before{content:"";position:absolute;inset:10px;border-radius:50%;background:var(--panel)}
.score-num{position:relative;font-size:34px;font-weight:800;color:var(--blue-700)}
.score-label{position:relative;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-top:-4px}
.score-summary{flex:1;min-width:260px}
.quickstats{list-style:none;display:flex;flex-wrap:wrap;gap:18px;padding:0;margin:12px 0 0}
.quickstats li{display:flex;flex-direction:column;font-size:12px;color:var(--muted);max-width:200px}
.quickstats li span{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.check{display:flex;gap:12px;align-items:flex-start;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:13px 15px;box-shadow:var(--shadow-sm)}
.check-icon{width:18px;height:18px;border-radius:50%;flex:0 0 18px;margin-top:2px}
.check-pass{border-left:3px solid var(--green)} .check-pass .check-icon{background:var(--green)}
.check-warn{border-left:3px solid var(--orange)} .check-warn .check-icon{background:var(--orange)}
.check-fail{border-left:3px solid var(--red)} .check-fail .check-icon{background:var(--red)}
.check-label{font-weight:600;font-size:14px}
.check-detail{font-size:13px;color:var(--muted);word-break:break-word}
.raw{margin-top:24px}
.raw summary{cursor:pointer;font-weight:600;padding:8px 0;color:var(--blue-600)}
.kv{width:100%;border-collapse:collapse;font-size:13px}
.kv th{text-align:left;color:var(--muted);font-weight:600;padding:5px 10px 5px 0;vertical-align:top;white-space:nowrap}
.kv td{padding:5px 0;word-break:break-word}

/* Recommendations */
.suggestions{margin-top:32px}
.suggestions h2{font-size:20px;margin:0 0 14px;color:var(--blue-700)}
.suggestion-list{list-style:none;counter-reset:sug;padding:0;margin:0;display:grid;gap:12px}
.suggestion{display:flex;gap:14px;align-items:flex-start;background:var(--panel);border:1px solid var(--border);
  border-radius:12px;padding:15px 17px;box-shadow:var(--shadow-sm);border-left:4px solid var(--border-2)}
.suggestion.prio-high{border-left-color:var(--red)}
.suggestion.prio-medium{border-left-color:var(--orange)}
.suggestion.prio-low{border-left-color:var(--green)}
.prio-tag{flex:0 0 auto;font-size:10px;font-weight:800;letter-spacing:.06em;color:#fff;padding:3px 8px;border-radius:20px;margin-top:2px;background:var(--muted-2)}
.prio-high .prio-tag{background:var(--red)}
.prio-medium .prio-tag{background:var(--orange)}
.prio-low .prio-tag{background:var(--green)}
.suggestion-title{font-weight:700;font-size:15px;margin-bottom:3px}
.suggestion-advice{font-size:13.5px;color:var(--muted)}

/* Report download */
.report-download{margin-top:26px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:linear-gradient(135deg,rgba(46,127,240,.08),rgba(247,128,30,.08));
  border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px}
.report-download h3{margin:0 0 4px;color:var(--blue-700);font-size:17px}
.report-download p{margin:0}
.report-download .btn{font-size:15px;padding:11px 22px}

/* Keyword density */
.density{width:100%;border-collapse:collapse;margin-top:16px;font-size:14px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.density th,.density td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border)}
.density tbody tr:last-child td{border-bottom:none}
.density tbody tr:hover{background:var(--panel-2)}
.density thead th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em;background:var(--panel-2)}
.density .bar{height:8px;border-radius:5px;background:var(--grad-brand);width:var(--w,0)}

/* misc form bits */
.tabs-radio{display:flex;gap:18px;margin-bottom:8px}
.tabs-radio label{display:flex;align-items:center;gap:6px;font-weight:500}
.tabs-radio input{width:auto}
.custom-rules{border:1px solid var(--border);border-radius:12px;padding:16px;margin:16px 0;background:var(--panel-2)}
.custom-rules legend{padding:0 8px;color:var(--muted);font-size:13px}

/* Footer */
.site-footer{border-top:1px solid var(--border);padding:26px 0;color:var(--muted);font-size:13px;background:var(--panel);margin-top:20px}
.site-footer p{margin:2px 0}
.site-footer .slogan{font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:linear-gradient(120deg,var(--blue-700),var(--orange));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* Responsive */
@media (max-width:900px){
  .editor{grid-template-columns:1fr}
  .previews{position:static}
  .checks{grid-template-columns:1fr}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .brand-logo{height:36px}
}