:root{
  --bg:#061120;
  --bg-2:#0b1730;
  --surface:#101b33;
  --surface-2:#152342;
  --surface-3:#1b2b50;
  --line:rgba(148,163,184,.16);
  --text:#f8fafc;
  --muted:#9fb0cc;
  --primary:#4f8df7;
  --primary-2:#70a3ff;
  --success:#16c784;
  --danger:#ef4444;
  --warning:#f59e0b;
  --shadow:0 18px 42px rgba(2,6,23,.36);
  --radius-xl:28px;
  --radius-lg:22px;
  --radius-md:18px;
  --radius-sm:14px;
  --max:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(79,141,247,.16), transparent 24%),
    radial-gradient(circle at top right, rgba(34,197,94,.10), transparent 18%),
    linear-gradient(180deg, var(--bg) 0%, #06101f 100%);
  line-height:1.6;
  font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
.container{width:min(var(--max), calc(100% - 32px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(16px);
  background:rgba(3,10,24,.78);
  border-bottom:1px solid rgba(148,163,184,.08);
}
.nav{
  min-height:78px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.brand{
  display:inline-flex;align-items:center;gap:12px;
  font-weight:800;font-size:18px;letter-spacing:-.03em;
}
.brand-mark{
  width:44px;height:44px;border-radius:16px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),#33c38f);
  box-shadow:0 10px 28px rgba(79,141,247,.28);
  color:#fff;font-weight:800;font-size:22px;
}
.nav-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.nav-links a{color:#d4deef;font-size:15px;font-weight:600}
.nav-links a:hover{color:#fff}

.hero{padding:56px 0 28px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:center}
.breadcrumbs{color:var(--muted);font-size:14px;margin-bottom:14px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  min-height:40px;padding:0 14px;border-radius:999px;
  background:rgba(79,141,247,.14);
  border:1px solid rgba(112,163,255,.18);
  color:#dbeafe;font-size:14px;font-weight:700;
}
.hero h1{
  margin:18px 0 12px;
  font-size:clamp(38px,6vw,60px);
  line-height:1.05;
  letter-spacing:-.05em;
}
.hero p{
  margin:0;
  max-width:760px;
  color:#d2dff3;
  font-size:clamp(17px,2.2vw,20px);
}
.hero-points,.hero-actions,.cta-actions,.action-bar,.mini-actions,.mode-row,.tool-actions,.category-tabs,.search-grid{
  display:flex;gap:12px;flex-wrap:wrap
}
.hero-points{margin-top:24px;color:var(--muted);font-size:15px}
.hero-points span{display:inline-flex;align-items:center;gap:8px}
.hero-actions{margin-top:28px}
.hero-card,.panel,.card,.tool-card,.search-shell,.cta-box,.stat-card,.result-card,.hash-card{
  background:linear-gradient(180deg, rgba(16,27,51,.96), rgba(14,24,45,.84));
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.hero-card,.panel,.card,.tool-card,.search-shell,.cta-box{border-radius:var(--radius-xl)}
.panel,.card,.tool-card,.search-shell{padding:24px}
.preview-toolbar{display:flex;gap:8px;margin-bottom:14px}
.preview-dot{width:10px;height:10px;border-radius:999px;background:rgba(255,255,255,.26)}
.preview-box{padding:18px;border-radius:22px;background:rgba(255,255,255,.03);border:1px solid rgba(148,163,184,.12)}
.preview-label{font-size:14px;color:var(--muted);margin-bottom:12px}
.output-chip-wrap{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.output-chip,.chip{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:38px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(148,163,184,.16);
  background:rgba(255,255,255,.03);
  color:#dbeafe;font-size:14px;font-weight:700;
}
.preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.preview-grid div{
  padding:14px;border-radius:18px;background:rgba(255,255,255,.03);border:1px solid rgba(148,163,184,.10)
}
.preview-grid strong{display:block;font-size:16px;margin-bottom:6px}
.preview-grid span{font-size:14px;color:var(--muted)}
.trust-bar{
  margin-top:24px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px
}
.trust-item{
  padding:18px;border-radius:20px;background:rgba(255,255,255,.03);border:1px solid rgba(148,163,184,.12)
}
.trust-item strong{display:block;font-size:28px;line-height:1;letter-spacing:-.04em;margin-bottom:8px}
.trust-item span{color:var(--muted);font-size:14px}

.section{padding:72px 0 0}
.section-head{text-align:center;max-width:820px;margin:0 auto 34px}
.section-head h2{margin:18px 0 10px;font-size:clamp(30px,5vw,44px);line-height:1.1;letter-spacing:-.04em}
.section-head p{margin:0;color:var(--muted);font-size:17px}
.grid-2,.grid-3,.admin-grid,.kpi-grid{
  display:grid;gap:20px
}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card h2,.card h3,.tool-card h3{margin:0 0 10px;letter-spacing:-.03em;line-height:1.2}
.card p,.card li,.tool-card p,.tool-card li{color:var(--muted)}
.helper-list{margin:12px 0 0;padding-left:20px}

.tool-card{
  display:flex;flex-direction:column;min-height:100%;
}
.tool-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}
.icon-badge{
  width:56px;height:56px;border-radius:18px;
  display:grid;place-items:center;font-size:24px;
  background:rgba(79,141,247,.14);border:1px solid rgba(112,163,255,.14)
}
.status-badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:30px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:800;letter-spacing:.02em
}
.status-live{background:rgba(22,199,132,.12);border:1px solid rgba(22,199,132,.2);color:#d1fae5}
.tool-card p{margin:0 0 18px}
.tool-actions{margin-top:auto}

.btn{
  border:0;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 18px;border-radius:16px;
  font-size:17px;font-weight:700;letter-spacing:-.02em;
  transition:transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{
  color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 14px 28px rgba(79,141,247,.26)
}
.btn-secondary{
  color:#f1f5f9;background:rgba(255,255,255,.03);border:1px solid rgba(148,163,184,.16)
}
.btn-danger{
  color:#fff;background:rgba(239,68,68,.16);border:1px solid rgba(239,68,68,.24)
}

.search-shell{margin-top:26px}
.search-grid{display:grid;grid-template-columns:1fr auto;gap:12px}
.search-input,
input[type="text"], input[type="password"], input[type="number"], input[type="date"], input[type="month"], select, textarea{
  width:100%;
  border:1px solid rgba(148,163,184,.18);
  background:rgba(4,11,24,.72);
  color:#fff;outline:none;
  transition:border-color .18s ease, box-shadow .18s ease;
}
input[type="text"], input[type="password"], input[type="number"], input[type="date"], input[type="month"], select{
  min-height:50px;padding:0 16px;border-radius:16px;font-size:16px
}
textarea{
  min-height:220px;padding:18px;border-radius:22px;resize:vertical;font-size:16px;line-height:1.7
}
textarea:focus,input:focus,select:focus,.search-input:focus{
  border-color:rgba(112,163,255,.48);
  box-shadow:0 0 0 4px rgba(79,141,247,.12)
}
input::placeholder,textarea::placeholder{color:#90a3bf}
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="month"]::-webkit-calendar-picker-indicator{filter:invert(1);opacity:.92}

.empty-state{
  display:none;margin-top:24px;padding:20px;border-radius:20px;
  background:rgba(255,255,255,.03);border:1px solid rgba(148,163,184,.12);
  color:var(--muted);text-align:center
}

.tool-shell{margin-top:30px}
.tool-top,.editor-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;flex-wrap:wrap}
.tool-title,.editor-title{font-size:20px;font-weight:800;letter-spacing:-.03em;line-height:1.2}
.mode-pill,.option{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:44px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(148,163,184,.16);
  background:rgba(255,255,255,.03);color:#dbeafe;font-size:15px;font-weight:700;
}
.option{justify-content:flex-start;border-radius:16px;padding:12px 14px}
.mode-pill.active{background:rgba(79,141,247,.16);border-color:rgba(112,163,255,.28)}
.workspace{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:16px 0}
.form-grid.two{grid-template-columns:repeat(2,1fr)}
.form-stack{display:grid;gap:14px}
.field{display:grid;gap:8px}
.field label{font-size:14px;font-weight:700;color:#dbeafe}
.result-card,.stat-card,.hash-card{
  padding:16px;border-radius:20px;background:rgba(255,255,255,.03);border:1px solid rgba(148,163,184,.12)
}
.result-label,.stat-label{font-size:14px;color:var(--muted);margin-bottom:8px}
.result-value{font-size:16px;font-weight:700;color:#eaf1ff;word-break:break-word}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
.stat-value{font-size:clamp(26px,4vw,34px);font-weight:800;line-height:1;letter-spacing:-.04em}
.feedback{margin-top:12px;min-height:22px;color:#bfd7ff;font-size:14px}
.feedback.success{color:#9ff0c5}
.feedback.error{color:#ffb4b4}
.qr-preview{
  min-height:330px;display:grid;place-items:center;padding:22px;
  border-radius:22px;background:rgba(255,255,255,.04);border:1px solid rgba(148,163,184,.12)
}
.qr-preview img,.qr-preview canvas{max-width:100%;height:auto;border-radius:14px;background:#fff;padding:12px}
.qr-placeholder{max-width:280px;text-align:center;color:var(--muted)}
.hash-name{font-size:14px;font-weight:800;color:#dbeafe}
.hash-value{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.7;word-break:break-all}
.cta-box{margin-top:56px;padding:34px;text-align:center}
.cta-box h2{margin:0 0 10px;font-size:clamp(28px,4vw,40px);letter-spacing:-.04em}
.cta-box p{max-width:740px;margin:0 auto;color:#d0ddef}

.site-footer{padding:36px 0 44px;color:var(--muted);border-top:1px solid rgba(148,163,184,.08);margin-top:72px}
.footer-grid{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}
.footer-links a:hover{color:#fff}
.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
}

/* Admin */
.admin-shell{padding:42px 0 70px}
.admin-toolbar{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;flex-wrap:wrap}
.filter-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:20px}
.filter-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
.kpi-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.admin-table-wrap{
  overflow:auto;border-radius:20px;border:1px solid rgba(148,163,184,.12);background:rgba(255,255,255,.03)
}
table{width:100%;border-collapse:collapse;min-width:720px}
th,td{padding:14px 16px;border-bottom:1px solid rgba(148,163,184,.12);text-align:left;font-size:14px}
th{color:#e7efff;font-weight:800;background:rgba(255,255,255,.02)}
td{color:#d4deef}
.muted{color:var(--muted)}
.section-title{margin:0 0 12px;font-size:24px;line-height:1.2;letter-spacing:-.03em}
.login-card{max-width:520px;margin:18px auto 0}
.error-box{
  margin-top:12px;padding:12px 14px;border-radius:14px;
  background:rgba(239,68,68,.10);border:1px solid rgba(239,68,68,.18);color:#fecaca
}
.inline-note{font-size:13px;color:var(--muted)}

@media (max-width:1100px){
  .hero-grid,.workspace,.grid-3,.stats-grid,.kpi-grid,.form-grid,.filter-grid{grid-template-columns:repeat(2,1fr)}
  .preview-grid,.grid-2{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .hero-grid,.workspace,.grid-2,.grid-3,.stats-grid,.kpi-grid,.form-grid,.filter-grid,.search-grid,.trust-bar,.preview-grid{
    grid-template-columns:1fr
  }
}
@media (max-width:760px){
  .nav{flex-direction:column;align-items:stretch;padding:14px 0}
  .nav-links{justify-content:center}
  .hero{padding-top:38px}
  .panel,.card,.tool-card,.search-shell,.cta-box{padding:20px}
  .btn,.mode-pill,.option{width:100%}
  .hero-actions,.action-bar,.mini-actions,.mode-row,.tool-actions,.category-tabs,.cta-actions,.filter-actions{flex-direction:column}
  .tool-top,.editor-head,.admin-toolbar{flex-direction:column;align-items:stretch}
  .footer-grid{flex-direction:column;align-items:flex-start}
}