/* ==========================================================================
   SEOWebChecker.com — SVG Editor Viewer Free
   Design tokens: dark navy base, electric-cyan "node" accent (vector anchor
   points), Outfit (display) + Inter (body/UI).
   ========================================================================== */

:root{
  --navy-950:#070c16;
  --navy-900:#0b1220;
  --navy-850:#0f1830;
  --navy-800:#131f3a;
  --navy-700:#1b2c4f;
  --navy-600:#243a64;
  --line:#22314f;
  --ink-0:#f4f7ff;
  --ink-1:#c4cde3;
  --ink-2:#8a97b8;
  --node:#33e0c7;       /* anchor-point / signature accent */
  --node-dim:#1c8a79;
  --path:#7c8cff;       /* bezier handle / secondary accent */
  --warn:#ffb14e;
  --danger:#ff6b6b;
  --ok:#3ee089;

  --font-display:'Outfit',sans-serif;
  --font-body:'Inter',sans-serif;

  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:22px;
  --shadow-1:0 4px 18px rgba(0,0,0,.35);
  --shadow-2:0 14px 40px rgba(0,0,0,.45);

  --bg:var(--navy-950);
  --surface:var(--navy-900);
  --surface-2:var(--navy-850);
  --border:var(--line);
  --text:var(--ink-0);
  --text-dim:var(--ink-1);
  --text-mute:var(--ink-2);
}

[data-theme="light"]{
  --bg:#f3f5fb;
  --surface:#ffffff;
  --surface-2:#eef1f9;
  --border:#dde3f2;
  --text:#0d1526;
  --text-dim:#3a4560;
  --text-mute:#6b7590;
  --node-dim:#0f8f7c;
  --shadow-1:0 4px 18px rgba(20,30,60,.08);
  --shadow-2:0 14px 40px rgba(20,30,60,.12);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  transition:background .25s ease,color .25s ease;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
h1,h2,h3,h4{font-family:var(--font-display);margin:0 0 .5em;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--node);outline-offset:2px}
@media (prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important}}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--node);color:#00251f;padding:10px 16px;border-radius:0 0 8px 0;z-index:9999}
.skip-link:focus{left:0}

/* ---------------- Top utility / cookie / GTAG bar ---------------- */
.cookie-banner{
  position:fixed;bottom:0;left:0;right:0;z-index:1000;
  background:var(--surface);border-top:1px solid var(--border);
  box-shadow:var(--shadow-2);
  padding:16px 20px;display:none;gap:16px;align-items:center;flex-wrap:wrap;
}
.cookie-banner.show{display:flex}
.cookie-banner p{margin:0;font-size:.88rem;color:var(--text-dim);flex:1;min-width:240px}
.cookie-banner a{color:var(--node);text-decoration:underline}
.cookie-actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-sm);border:1px solid transparent;
  padding:10px 18px;font-weight:600;font-size:.9rem;transition:.18s ease;white-space:nowrap;
}
.btn-primary{background:var(--node);color:#04241f}
.btn-primary:hover{background:#5cf0da;transform:translateY(-1px)}
.btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--node);color:var(--node)}
.btn-sm{padding:7px 12px;font-size:.8rem}

/* ---------------- Header ---------------- */
header.site-header{
  position:sticky;top:0;z-index:900;background:rgba(7,12,22,.86);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border);
}
[data-theme="light"] header.site-header{background:rgba(255,255,255,.88)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:18px}
.logo{font-family:var(--font-display);font-weight:800;font-size:1.25rem;display:flex;align-items:center;gap:8px}
.logo span{color:var(--node)}
nav.primary-nav{display:flex;align-items:center;gap:6px}
.nav-list{display:flex;list-style:none;margin:0;padding:0;gap:2px;align-items:center}
.nav-list>li{position:relative}
.nav-list>li>a,.nav-list>li>button.nav-top{
  display:flex;align-items:center;gap:6px;padding:10px 14px;border-radius:var(--radius-sm);
  font-size:.9rem;font-weight:500;color:var(--text-dim);background:transparent;border:none;
}
.nav-list>li>a:hover,.nav-list>li>button.nav-top:hover,.nav-list>li>a.active{color:var(--text);background:var(--surface-2)}
.caret{width:9px;height:9px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-top:-3px;transition:.2s}
li.has-mega:hover .caret{transform:rotate(225deg);margin-top:3px}

.mega{
  position:absolute;top:100%;left:50%;transform:translateX(-50%);
  width:min(760px,90vw);background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-md);box-shadow:var(--shadow-2);
  padding:22px;display:none;grid-template-columns:repeat(2,1fr);gap:22px 28px;z-index:950;
}
li.has-mega:hover .mega,li.has-mega:focus-within .mega{display:grid}
.mega-col h4{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--node);margin:0 0 10px}
.mega-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.mega-col a{font-size:.86rem;color:var(--text-dim);padding:4px 0;display:block}
.mega-col a:hover{color:var(--node)}

.header-actions{display:flex;align-items:center;gap:10px}
.theme-toggle{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--border);
  background:var(--surface-2);display:flex;align-items:center;justify-content:center;color:var(--text);
}
.theme-toggle svg{width:18px;height:18px}
.hamburger{display:none;width:42px;height:42px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface-2);flex-direction:column;justify-content:center;align-items:center;gap:4px}
.hamburger span{width:20px;height:2px;background:var(--text);border-radius:2px}

/* Mobile nav */
@media (max-width:980px){
  .hamburger{display:flex}
  nav.primary-nav{
    position:fixed;inset:68px 0 0 0;background:var(--bg);border-top:1px solid var(--border);
    transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;padding:14px 0 90px;
  }
  nav.primary-nav.open{transform:translateX(0)}
  .nav-list{flex-direction:column;align-items:stretch;padding:0 16px;gap:2px}
  .nav-list>li>a,.nav-list>li>button.nav-top{width:100%;justify-content:space-between}
  .mega{position:static;transform:none;width:100%;display:none;grid-template-columns:1fr;box-shadow:none;border:none;background:var(--surface-2);margin-top:4px}
  li.has-mega.open .mega{display:grid}
  li.has-mega:hover .mega{display:none}
  li.has-mega.open:hover .mega{display:grid}
}

/* ---------------- Breadcrumb ---------------- */
.breadcrumb{padding:14px 0;font-size:.82rem;color:var(--text-mute)}
.breadcrumb a{color:var(--text-mute)}
.breadcrumb a:hover{color:var(--node)}
.breadcrumb .sep{margin:0 6px;opacity:.6}
.breadcrumb .current{color:var(--text-dim)}

/* ---------------- Hero ---------------- */
.hero{padding:36px 0 56px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.76rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--node);background:rgba(51,224,199,.08);border:1px solid rgba(51,224,199,.25);padding:6px 12px;border-radius:99px;margin-bottom:16px}
.hero h1{font-size:clamp(2rem,4vw,2.9rem);line-height:1.12}
.hero h1 em{font-style:normal;color:var(--node)}
.hero p.lead{color:var(--text-dim);font-size:1.05rem;max-width:52ch;margin-bottom:22px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px}
.hero-stats{display:flex;gap:26px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats strong{font-family:var(--font-display);font-size:1.3rem;color:var(--node)}
.hero-stats span{font-size:.78rem;color:var(--text-mute)}

.hero-visual{position:relative;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-2);padding:18px;overflow:hidden}
.hero-visual .node-dot{fill:var(--node);cursor:grab}
.hero-visual .handle-line{stroke:var(--path);stroke-dasharray:4 4}
.hero-visual figcaption{font-size:.72rem;color:var(--text-mute);text-align:center;margin-top:8px}

/* ---------------- Editor ---------------- */
.editor-section{padding:40px 0 60px;scroll-margin-top:80px}
.section-head{max-width:640px;margin:0 auto 30px;text-align:center}
.section-head h2{font-size:clamp(1.5rem,3vw,2rem)}
.section-head p{color:var(--text-dim)}

.editor-shell{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-2);overflow:hidden}
.editor-tabs{display:flex;border-bottom:1px solid var(--border);background:var(--surface-2);overflow-x:auto}
.editor-tab{padding:13px 20px;font-size:.86rem;font-weight:600;color:var(--text-mute);border:none;background:transparent;border-bottom:2px solid transparent;white-space:nowrap}
.editor-tab.active{color:var(--node);border-bottom-color:var(--node)}
.editor-panel{display:none;padding:18px}
.editor-panel.active{display:block}

.toolbar{display:flex;flex-wrap:wrap;gap:6px;padding:12px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.tool-btn{
  width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--surface);color:var(--text-dim);display:flex;align-items:center;justify-content:center;
}
.tool-btn svg{width:18px;height:18px}
.tool-btn:hover{border-color:var(--node);color:var(--node)}
.tool-btn.active{background:var(--node);color:#04241f;border-color:var(--node)}
.toolbar .divider{width:1px;background:var(--border);margin:4px 6px}

.workspace{display:grid;grid-template-columns:1fr 260px;gap:0;min-height:520px}
.canvas-wrap{position:relative;background:
  linear-gradient(45deg,var(--surface-2) 25%,transparent 25%) -8px 0/16px 16px,
  linear-gradient(-45deg,var(--surface-2) 25%,transparent 25%) -8px 0/16px 16px,
  linear-gradient(45deg,transparent 75%,var(--surface-2) 75%) -8px 0/16px 16px,
  linear-gradient(-45deg,transparent 75%,var(--surface-2) 75%) -8px 0/16px 16px;
  background-color:var(--surface);
  overflow:auto;padding:20px;display:flex;align-items:center;justify-content:center;min-height:520px;
}
#svg-canvas{background:#fff;box-shadow:0 0 0 1px var(--border),var(--shadow-1);max-width:100%;touch-action:none}
.canvas-zoom{position:absolute;bottom:14px;right:14px;display:flex;gap:6px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:5px}
.canvas-zoom button{width:30px;height:30px;border:none;background:transparent;color:var(--text-dim);border-radius:6px}
.canvas-zoom button:hover{background:var(--surface-2);color:var(--node)}
.canvas-zoom span{align-self:center;font-size:.78rem;color:var(--text-mute);min-width:42px;text-align:center}

.side-panel{border-left:1px solid var(--border);padding:16px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;max-height:600px}
.side-panel h4{font-size:.74rem;text-transform:uppercase;letter-spacing:.07em;color:var(--text-mute);margin:0 0 8px}
.field-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}
.field-row label{font-size:.82rem;color:var(--text-dim)}
.field-row input[type="color"]{width:38px;height:28px;border:1px solid var(--border);border-radius:6px;padding:0;background:none}
.field-row input[type="range"]{width:110px}
.field-row input[type="number"],.field-row select,.field-row input[type="text"]{
  width:110px;background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  border-radius:6px;padding:5px 8px;font-size:.82rem;
}
.layers-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px;max-height:180px;overflow-y:auto}
.layers-list li{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;border-radius:6px;font-size:.8rem;color:var(--text-dim);border:1px solid transparent}
.layers-list li:hover{background:var(--surface-2)}
.layers-list li.active{border-color:var(--node);color:var(--node)}
.layers-list button{background:none;border:none;color:var(--text-mute);font-size:.9rem}

.empty-hint{color:var(--text-mute);font-size:.82rem;text-align:center;padding:20px 10px}

/* Paste-code / upload panel */
.upload-drop{
  border:2px dashed var(--border);border-radius:var(--radius-md);padding:34px 20px;text-align:center;
  color:var(--text-mute);cursor:pointer;transition:.2s;
}
.upload-drop.drag{border-color:var(--node);color:var(--node);background:rgba(51,224,199,.06)}
.upload-drop svg{width:34px;height:34px;margin:0 auto 10px;color:var(--node)}
textarea#svg-code-input{
  width:100%;min-height:260px;background:var(--navy-950);color:#c8f5ec;border:1px solid var(--border);
  border-radius:var(--radius-md);padding:14px;font-family:'SFMono-Regular',Consolas,monospace;font-size:.82rem;
  resize:vertical;line-height:1.5;
}
[data-theme="light"] textarea#svg-code-input{background:#0d1526;color:#7ef4dc}
.validation-msg{margin-top:8px;font-size:.82rem;padding:8px 12px;border-radius:8px;display:none}
.validation-msg.error{display:block;background:rgba(255,107,107,.1);color:var(--danger);border:1px solid rgba(255,107,107,.3)}
.validation-msg.ok{display:block;background:rgba(62,224,137,.1);color:var(--ok);border:1px solid rgba(62,224,137,.3)}

.submit-row{display:flex;gap:12px;justify-content:center;margin-top:16px;flex-wrap:wrap}

/* Result section */
.result-section{padding:20px;border-top:1px solid var(--border);display:none}
.result-section.show{display:block}
.result-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:14px}
.result-actions{display:flex;gap:8px;flex-wrap:wrap}
.result-preview{background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;display:flex;align-items:center;justify-content:center;min-height:200px}
.result-code{margin-top:14px;background:var(--navy-950);color:#c8f5ec;border-radius:var(--radius-md);padding:14px;font-family:Consolas,monospace;font-size:.78rem;max-height:220px;overflow:auto;white-space:pre-wrap;word-break:break-all}
[data-theme="light"] .result-code{background:#0d1526;color:#7ef4dc}
.post-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap;justify-content:center}

/* Toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);opacity:0;background:var(--surface);border:1px solid var(--border);color:var(--text);padding:12px 18px;border-radius:var(--radius-sm);box-shadow:var(--shadow-2);font-size:.86rem;z-index:1200;transition:.25s ease;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.error{border-color:var(--danger);color:var(--danger)}

/* ---------------- Reference links strip ---------------- */
.ref-strip{padding:40px 0}
.ref-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.ref-grid a{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;font-size:.84rem;color:var(--text-dim)}
.ref-grid a:hover{border-color:var(--node);color:var(--node)}

/* ---------------- Generic sections ---------------- */
.features{padding:50px 0}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:22px}
.feature-card .icon{width:42px;height:42px;border-radius:10px;background:rgba(51,224,199,.1);color:var(--node);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.feature-card .icon svg{width:22px;height:22px}
.feature-card h3{font-size:1.02rem}
.feature-card p{font-size:.88rem;color:var(--text-dim);margin:0}

.how-it-works{padding:50px 0;background:var(--surface)}
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;counter-reset:step}
.step{position:relative;padding-left:44px}
.step::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;background:var(--node);color:#04241f;font-family:var(--font-display);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:.9rem}
.step h3{font-size:.98rem}
.step p{font-size:.86rem;color:var(--text-dim);margin:0}

.about-copy{padding:50px 0}
.about-copy .container{max-width:820px}
.about-copy p{color:var(--text-dim);font-size:.95rem}
.about-copy h2{font-size:1.5rem}

.faq{padding:50px 0}
.faq-list{max-width:780px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:18px 0;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:var(--text);font-size:.96rem}
.faq-q .plus{font-size:1.3rem;color:var(--node);transition:.2s}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a p{color:var(--text-dim);font-size:.9rem;padding-bottom:16px;margin:0}

.cta{padding:56px 0;text-align:center;background:linear-gradient(135deg,var(--navy-850),var(--navy-800));border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.cta h2{font-size:clamp(1.4rem,3vw,1.9rem)}
.cta p{color:var(--text-dim);max-width:540px;margin:0 auto 22px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------------- Footer ---------------- */
footer.site-footer{background:var(--navy-950);border-top:1px solid var(--border);padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px;margin-bottom:34px}
.footer-brand p{color:var(--text-mute);font-size:.84rem;max-width:32ch}
.footer-col h4{font-size:.76rem;text-transform:uppercase;letter-spacing:.07em;color:var(--node);margin-bottom:12px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px}
.footer-col a{font-size:.82rem;color:var(--text-mute)}
.footer-col a:hover{color:var(--node)}
.footer-bottom{border-top:1px solid var(--border);padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.78rem;color:var(--text-mute)}
.footer-bottom .legal-links{display:flex;gap:14px;flex-wrap:wrap}
.disclaimer{font-size:.74rem;color:var(--text-mute);max-width:900px;margin:14px 0 0}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .workspace{grid-template-columns:1fr}
  .side-panel{border-left:none;border-top:1px solid var(--border);max-height:none}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .header-inner{height:60px}
  .hero{padding:24px 0 40px}
}

.share-feedback-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:18px}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}