@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  --bg:#fafafa;
  --card:rgba(255,255,255,0.72);
  --card-border:rgba(24,24,27,0.08);
  --text:#18181b;
  --text-dim:#71717a;
  --primary:#5b5bf0;
  --primary-2:#8b7ff5;
  --success:#0ea968;
  --warning:#d97706;
  --danger:#e11d48;
  --mono-bg:#f4f4f7;
  --byte1:#c7c7d1;
  --byte2:#d97706;
  --byte3:#5b5bf0;
  --byte4:#ec4899;
  --shadow: 0 20px 60px -20px rgba(24,24,27,0.15);
}
html[data-theme="dark"]{
  --bg:#0a0a0d;
  --card:rgba(24,24,30,0.6);
  --card-border:rgba(255,255,255,0.08);
  --text:#f4f4f6;
  --text-dim:#a1a1aa;
  --primary:#818cf8;
  --primary-2:#a78bfa;
  --mono-bg:#131318;
  --byte1:#3f3f4a;
  --byte2:#f0b350;
  --byte3:#a5a6ff;
  --byte4:#f472b6;
  --shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
}

*{box-sizing:border-box;}
body{
  margin:0;
  min-height:100vh;
  background:
    radial-gradient(1200px 500px at 15% -10%, color-mix(in srgb, var(--primary) 12%, transparent), transparent),
    radial-gradient(900px 500px at 100% 0%, color-mix(in srgb, var(--primary-2) 10%, transparent), transparent),
    var(--bg);
  color:var(--text);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  transition:background .3s ease, color .3s ease;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);}
.wrap{max-width:780px;margin:0 auto;padding:56px 20px 100px;}

.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:36px;gap:10px;flex-wrap:wrap;}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;letter-spacing:-.01em;}
.brand .dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-2));box-shadow:0 0 14px color-mix(in srgb, var(--primary) 60%, transparent);}
.controls{display:flex;align-items:center;gap:8px;}
.lang-group{display:flex;flex-wrap:wrap;border:1px solid var(--card-border);border-radius:10px;overflow:hidden;background:var(--card);backdrop-filter:blur(12px);}
.lang-group a{
  color:var(--text-dim);font-family:inherit;font-size:12px;font-weight:600;
  padding:8px 10px;cursor:pointer;transition:all .15s;text-decoration:none;
}
.lang-group a.active{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;}
.lang-group a:not(.active):hover{color:var(--text);}
.theme-btn{
  border:1px solid var(--card-border);background:var(--card);backdrop-filter:blur(12px);
  color:var(--text-dim);width:36px;height:36px;border-radius:10px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:15px;transition:all .2s;flex-shrink:0;
}
.theme-btn:hover{color:var(--text);border-color:var(--primary);}

.eyebrow{
  font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--primary);
  margin-bottom:10px;
}
h1{font-size:28px;font-weight:800;letter-spacing:-.03em;line-height:1.2;margin:0 0 10px;}
.lede{color:var(--text-dim);font-size:15px;line-height:1.6;margin:0 0 32px;max-width:60ch;}

.card{
  background:var(--card);
  border:1px solid var(--card-border);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  border-radius:20px;
  box-shadow:var(--shadow);
  padding:28px;
  transition:background .3s ease, border-color .3s ease;
}

label{display:block;font-size:12px;font-weight:600;color:var(--text-dim);margin-bottom:8px;letter-spacing:.02em;}
select{
  width:100%;padding:11px 14px;border-radius:11px;border:1px solid var(--card-border);
  background:var(--mono-bg);color:var(--text);font-size:14px;font-family:inherit;
  appearance:none;cursor:pointer;transition:border-color .2s;
}
select:focus{outline:none;border-color:var(--primary);}
.field-note{font-size:11.5px;color:var(--text-dim);margin-top:6px;line-height:1.5;}

.row{display:flex;gap:10px;margin:16px 0;flex-wrap:wrap;}
button.action{
  flex:1;min-width:150px;
  padding:11px 16px;border-radius:11px;border:none;cursor:pointer;
  font-family:inherit;font-size:13.5px;font-weight:600;letter-spacing:-.01em;
  display:flex;align-items:center;justify-content:center;gap:7px;
  transition:transform .15s, box-shadow .15s, opacity .2s;
}
button.action:active{transform:scale(.97);}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;
  box-shadow:0 8px 20px -6px color-mix(in srgb, var(--primary) 70%, transparent);
}
.btn-primary:hover{box-shadow:0 10px 26px -6px color-mix(in srgb, var(--primary) 80%, transparent);}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;box-shadow:none;}
.btn-secondary{
  background:var(--mono-bg);color:var(--text);border:1px solid var(--card-border);
}
.btn-secondary:hover{border-color:var(--primary);}

textarea{
  width:100%;min-height:150px;padding:14px;border-radius:12px;
  border:1px solid var(--card-border);background:var(--mono-bg);color:var(--text);
  font-family:'JetBrains Mono',monospace;font-size:13.5px;line-height:1.6;resize:vertical;
  transition:border-color .2s;
}
textarea:focus{outline:none;border-color:var(--primary);}
textarea::placeholder{color:var(--text-dim);}

.ruler-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-dim);margin:18px 0 6px;font-family:'JetBrains Mono',monospace;gap:10px;}
.ruler-label span:first-child{flex:1;}
.ruler-label b{color:var(--text);font-weight:600;white-space:nowrap;}
.ruler{
  position:relative;height:26px;border-radius:8px;overflow:hidden;
  background:var(--mono-bg);border:1px solid var(--card-border);
  display:flex;
}
.ruler .seg{height:100%;flex-shrink:0;}
.ruler .seg.b1{background:var(--byte1);}
.ruler .seg.b2{background:var(--byte2);}
.ruler .seg.b3{background:var(--byte3);}
.ruler .seg.b4{background:var(--byte4);}
.ruler .limit-line{
  position:absolute;top:-3px;bottom:-3px;width:2px;background:var(--danger);z-index:2;
}
.ruler .limit-line::after{
  content:attr(data-label);position:absolute;top:-16px;left:50%;transform:translateX(-50%);
  font-size:9px;color:var(--danger);font-weight:700;white-space:nowrap;letter-spacing:.03em;
}
.legend{display:flex;gap:14px;margin-top:8px;font-size:11px;color:var(--text-dim);flex-wrap:wrap;}
.legend span{display:flex;align-items:center;gap:5px;}
.legend i{width:8px;height:8px;border-radius:2px;display:inline-block;}

.status-row{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-size:13px;font-family:'JetBrains Mono',monospace;}
.status-pill{padding:3px 10px;border-radius:999px;font-weight:600;font-size:12px;}
.status-safe{background:color-mix(in srgb, var(--success) 16%, transparent);color:var(--success);}
.status-warn{background:color-mix(in srgb, var(--warning) 16%, transparent);color:var(--warning);}
.status-danger{background:color-mix(in srgb, var(--danger) 16%, transparent);color:var(--danger);}

.alert{
  margin-top:16px;padding:14px 16px;border-radius:12px;font-size:13px;line-height:1.6;
  background:color-mix(in srgb, var(--warning) 10%, transparent);
  border:1px solid color-mix(in srgb, var(--warning) 30%, transparent);
  display:none;
}
.alert.show{display:block;}
.alert .item{margin-bottom:6px;}
.alert .item:last-child{margin-bottom:0;}
.badge{
  display:inline-block;padding:1px 7px;border-radius:5px;font-size:10.5px;font-weight:700;
  background:var(--danger);color:#fff;margin-right:6px;letter-spacing:.02em;
}

.hint{font-size:11.5px;color:var(--text-dim);margin-top:10px;line-height:1.5;}

.seo{margin-top:64px;}
.seo h2{font-size:19px;font-weight:700;letter-spacing:-.02em;margin:0 0 10px;}
.seo p{color:var(--text-dim);font-size:14.5px;line-height:1.7;margin:0 0 28px;}
.faq-item{padding:20px 0;border-top:1px solid var(--card-border);}
.faq-item h3{font-size:15px;font-weight:600;margin:0 0 8px;letter-spacing:-.01em;}
.faq-item p{margin:0;font-size:14px;color:var(--text-dim);line-height:1.7;}

footer{margin-top:50px;padding-top:20px;border-top:1px solid var(--card-border);font-size:12px;color:var(--text-dim);text-align:center;}