:root{
  --bg:#111827;
  --bg2:#172033;
  --panel:#1f2937;
  --panel2:#243044;
  --border:#374151;
  --text:#f9fafb;
  --muted:#aeb8c8;
  --brand:#8b5cf6;
  --brand2:#06b6d4;
  --success:#22c55e;
  --danger:#ef4444;
  --warning:#f59e0b;
  --radius:20px;
  --shadow:0 18px 55px rgba(0,0,0,.28);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  font-family:Inter,Segoe UI,system-ui,-apple-system,Roboto,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(139,92,246,.25), transparent 38%),
    radial-gradient(circle at top right, rgba(6,182,212,.18), transparent 30%),
    linear-gradient(135deg,var(--bg),var(--bg2));
}
a{color:inherit;text-decoration:none}
.app-shell{width:min(1120px,100%);margin:0 auto;padding:18px 16px 36px}
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 16px;margin-bottom:22px;border:1px solid rgba(255,255,255,.08);
  border-radius:24px;background:rgba(31,41,55,.72);backdrop-filter:blur(14px);box-shadow:var(--shadow);
  position:sticky;top:12px;z-index:10;
}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand2));font-size:22px}
.brand strong{display:block;font-size:17px;line-height:1.1}.brand small{display:block;color:var(--muted);font-size:12px;margin-top:3px}
.nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.nav a{padding:9px 11px;border-radius:999px;color:var(--muted);font-size:14px;border:1px solid transparent}
.nav a:hover{color:var(--text);background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.08)}
.main{display:block}.narrow{width:min(760px,100%);margin:0 auto}
.hero{display:flex;align-items:center;gap:18px;margin:16px 0 20px}.hero-icon{display:grid;place-items:center;width:64px;height:64px;border-radius:22px;background:linear-gradient(135deg,rgba(139,92,246,.95),rgba(6,182,212,.9));font-size:30px;box-shadow:0 12px 35px rgba(6,182,212,.16)}
h1{margin:0;font-size:clamp(28px,4vw,44px);letter-spacing:-.04em}.hero p{margin:6px 0 0;color:var(--muted);font-size:16px;line-height:1.5}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.tool-card,.card{background:rgba(31,41,55,.82);border:1px solid rgba(255,255,255,.09);border-radius:var(--radius);box-shadow:var(--shadow)}
.tool-card{padding:20px;display:flex;flex-direction:column;gap:12px;transition:.16s transform,.16s border-color,.16s background}.tool-card:hover{transform:translateY(-3px);border-color:rgba(139,92,246,.45);background:rgba(36,48,68,.92)}
.tool-icon{font-size:34px}.tool-card h2{font-size:20px;margin:0}.tool-card p{margin:0;color:var(--muted);line-height:1.45;font-size:14px}.tool-card .open{margin-top:auto;color:#c4b5fd;font-weight:700;font-size:14px}
.card{padding:22px;margin-bottom:14px}.section-title{font-weight:800;font-size:18px;margin:0 0 14px}.hint{color:var(--muted);line-height:1.55;margin:0 0 16px}.small{font-size:13px;color:var(--muted)}
.form-grid{display:grid;gap:14px}.two{grid-template-columns:repeat(2,minmax(0,1fr))}.three{grid-template-columns:repeat(3,minmax(0,1fr))}
label{display:grid;gap:8px;color:var(--muted);font-weight:700;font-size:14px}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:16px;background:#111827;color:var(--text);padding:13px 14px;font:inherit;outline:none}textarea{font-family:var(--mono);line-height:1.45;resize:vertical;min-height:72px}input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(139,92,246,.16)}
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.check{display:flex;align-items:center;gap:10px;padding:12px 13px;border:1px solid var(--border);border-radius:16px;background:#111827;color:var(--text);font-weight:650}.check input{width:18px;height:18px;accent-color:var(--brand);box-shadow:none}.check label{display:block;color:var(--text);font-weight:650;margin:0;cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--border);background:#111827;color:var(--text);padding:12px 16px;border-radius:16px;cursor:pointer;font-weight:800;font-size:14px;min-height:46px}.btn:hover{background:#182235}.btn.primary{background:linear-gradient(135deg,var(--brand),#7c3aed);border-color:transparent;color:white}.btn.success{background:linear-gradient(135deg,var(--success),#16a34a);border-color:transparent;color:white}.btn.danger{border-color:rgba(239,68,68,.45);color:#fecaca}.btn.full{width:100%}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.logout{color:#fecaca;border:1px solid rgba(239,68,68,.35);padding:9px 12px;border-radius:999px;font-size:13px}.title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}.title-row h2{margin:0;font-size:24px}.title-row h2 a:hover{color:#c4b5fd}
.alert{border-radius:16px;padding:13px 14px;margin-bottom:14px;border:1px solid rgba(255,255,255,.08);line-height:1.45}.alert.success{background:rgba(34,197,94,.12);border-color:rgba(34,197,94,.28);color:#bbf7d0}.alert.danger{background:rgba(239,68,68,.12);border-color:rgba(239,68,68,.28);color:#fecaca}.alert.warning{background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.28);color:#fde68a}
.preview{background:#090f1d;border:1px solid var(--border);border-radius:18px;padding:18px;font-family:var(--mono);font-size:14px;line-height:1.5;white-space:pre;overflow:auto;min-height:120px;color:#e5e7eb}.list{display:grid;gap:10px}.row-2,.row-3{display:grid;gap:10px}.row-2{grid-template-columns:1fr 50px}.row-3{grid-template-columns:1fr 1fr 50px}.remove{padding:0;min-height:48px}.footer{text-align:center;color:var(--muted);font-size:13px;margin-top:34px}.footer a{color:#c4b5fd;font-weight:800}.footer a:hover{text-decoration:underline}
@media(max-width:820px){.topbar{align-items:flex-start;flex-direction:column;position:static}.nav{justify-content:flex-start}.grid{grid-template-columns:1fr 1fr}.two,.three,.check-grid{grid-template-columns:1fr}.row-3{grid-template-columns:1fr}.row-2{grid-template-columns:1fr 50px}.hero{align-items:flex-start}.card{padding:18px}}
@media(max-width:560px){.app-shell{padding:12px 10px 28px}.grid{grid-template-columns:1fr}.hero-icon{width:54px;height:54px;border-radius:18px}.brand small{display:none}.nav a{font-size:13px;padding:8px 9px}.actions .btn{width:100%}}