:root{
  --bg1: #0f172a;
  --bg2: #0b1220;
  --glass: rgba(255,255,255,0.06);
  --accent1: #6EE7B7;
  --accent2: #60A5FA;
  --muted: rgba(255,255,255,0.7);
  --card-radius: 14px;
  --shadow: 0 6px 18px rgba(2,6,23,0.6);
  --glass-border: rgba(255,255,255,0.06);
  --glass-line: rgba(255,255,255,0.04);
  font-family: "Vazir", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(135deg,var(--bg1),var(--bg2));
  color:#e6eef8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:28px;
  direction:rtl;
}

/* container */
.container{
  max-width:920px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
}

/* cards */
.card{
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:var(--card-radius);
  padding:18px;
  box-shadow:var(--shadow);
  border:1px solid var(--glass-border);
  backdrop-filter: blur(8px) saturate(120%);
}

.header-card{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
}
.header-card h1{margin:0;font-size:20px}
.muted{opacity:.85;color:var(--muted)}

.form-card label{
  display:block;
  margin-bottom:12px;
  font-size:14px;
}
input[type="text"], input[type="number"], select{
  width:100%;
  padding:10px 12px;
  margin-top:6px;
  border-radius:10px;
  border:1px solid var(--glass-line);
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  color:inherit;
  outline:none;
  box-shadow: 0 2px 6px rgba(2,6,23,0.4) inset;
}

/* row */
.row{
  display:flex;
  gap:12px;
}
.row label{flex:1}

/* DNS row */
.dns-row{
  display:flex;
  gap:8px;
}
.dns-row select{width:35%}
.dns-row input{flex:1}
.dns-row .small{padding:8px 10px}

/* buttons */
.btn{
  padding:10px 14px;
  border-radius:999px;
  background:transparent;
  border:1px solid rgba(255,255,255,0.06);
  cursor:pointer;
  font-weight:600;
  backdrop-filter: blur(6px);
}
.btn.primary{
  background:linear-gradient(90deg,var(--accent1),var(--accent2));
  color:#04203a;
  border:0;
  box-shadow: 0 8px 24px rgba(14,98,255,0.12);
}
.btn.small{padding:8px 10px;font-size:13px}

/* result */
.result-card .output{
  min-height:220px;
  max-height:420px;
  overflow:auto;
  background:linear-gradient(180deg, rgba(2,6,23,0.4), rgba(2,6,23,0.2));
  padding:12px;
  border-radius:10px;
  font-family:monospace;
  font-size:13px;
  white-space:pre-wrap;
  word-break:break-all;
}

/* footer */
.footer-card{text-align:center;font-size:12px}
@media (max-width:640px){
  .row{flex-direction:column}
  .dns-row{flex-direction:column}
}