:root{
  --bg1:#142e84;
  --bg2:#07122f;
  --card: rgba(176, 24, 24, 0.08);
  --card2: rgba(255,255,255,0.06);
  --border: rgba(129, 27, 27, 0.14);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --shadow: 0 20px 60px rgba(0,0,0,0.45);
  --radius: 18px;
}

*{ box-sizing:border-box; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue";
  color: var(--text);
  background: radial-gradient(1200px 600px at 20% 0%, #1c2b5a 0%, transparent 55%),
              radial-gradient(1000px 600px at 90% 10%, #3a1b5a 0%, transparent 60%),
              linear-gradient(180deg, var(--bg1), var(--bg2));
  min-height:100vh;
}

.bg{
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(800px 400px at 30% 20%, rgba(102, 174, 255, 0.22), transparent 60%),
    radial-gradient(700px 420px at 80% 30%, rgba(255, 112, 184, 0.18), transparent 60%);
  filter: blur(0px);
  opacity:0.9;
}

.container{
  width: min(980px, 92vw);
  margin: 0 auto;
  padding: 34px 0 40px;
  position:relative;
  z-index:1;
}

.header{
  margin-bottom: 18px;
}
.header.row{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 16px;
}
.header h1{
  margin: 10px 0 8px;
  font-size: clamp(28px, 4vw, 44px);
  line-height:1.1;
  letter-spacing: -0.02em;
}
.sub{
  margin:0;
  color: var(--muted);
  font-size: 15px;
  max-width: 720px;
}

.badge{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.10);
  border: 1px solid var(--border);
  color: rgba(255,255,255,0.86);
  font-size: 12px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.card{
  background: linear-gradient(180deg, var(--card), var(--card2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.form .grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field label{
  display:block;
  font-size: 12px;
  color: rgba(255,255,255,0.78);
  margin: 2px 0 6px;
}
.field input{
  width:100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(10, 14, 30, 0.40);
  color: var(--text);
  outline:none;
}
.field input::placeholder{ color: rgba(255,255,255,0.45); }
.field input:focus{
  border-color: rgba(255,255,255,0.28);
  box-shadow: 0 0 0 4px rgba(120, 170, 255, 0.12);
}

.actions{
  margin-top: 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  flex-wrap:wrap;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  border:none;
  cursor:pointer;
  padding: 12px 16px;
  border-radius: 14px;
  color: rgba(255,255,255,0.95);
  background: linear-gradient(90deg, rgba(102,174,255,0.95), rgba(255,112,184,0.90));
  box-shadow: 0 16px 40px rgba(0,0,0,0.25);
  font-weight: 650;
}
.btn:active{ transform: translateY(1px); }
.arrow{ font-size: 18px; }

.hint{
  margin:0;
  color: rgba(255,255,255,0.62);
  font-size: 12px;
}

.right{ display:flex; gap: 10px; }

.linkbtn{
  text-decoration:none;
  color: rgba(255,255,255,0.88);
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
}
.linkbtn:hover{ background: rgba(255,255,255,0.09); }

.toolbar{
  display:flex;
  gap: 10px;
  justify-content:flex-end;
  margin-bottom: 12px;
}

.ghost{
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.88);
  border-radius: 12px;
  padding: 10px 12px;
  cursor:pointer;
}
.ghost:hover{ background: rgba(255,255,255,0.09); }

.result{
  white-space: pre-wrap;
  word-wrap: break-word;
  margin:0;
  font-size: 14px;
  line-height: 1.6;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.25);
}

.footer{
  margin-top: 16px;
  color: rgba(255,255,255,0.55);
  font-size: 12px;
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
  justify-content:center;
}

@media (max-width: 720px){
  .form .grid{ grid-template-columns: 1fr; }
  .header.row{ flex-direction:column; }
  .toolbar{ justify-content:flex-start; }
}

@media print{
  .bg, .toolbar, .right, .footer{ display:none !important; }
  body{ background:#fff; color:#111; }
  .card{ box-shadow:none; background:#fff; border:1px solid #ddd; }
  .result{ background:#fff; border:1px solid #ddd; color:#111; }
}

.spinner{
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: rgba(255,255,255,0.95);
  display: none;
  animation: spin 0.9s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.btn-disabled{
  opacity: 0.8;
  cursor: not-allowed;
}