:root {
  --bg: #0b1020;
  --bg2: #10162e;
  --panel: #161d38;
  --panel2: #1c2648;
  --border: #2a3660;
  --txt: #e8ecff;
  --muted: #8a95c4;
  --accent: #5b8cff;
  --accent2: #8a5bff;
  --net: #ffb020;
  --host: #2ee6a6;
  --err: #ff5c7a;
  --ok: #2ee6a6;
  --warn: #ffb020;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
}
body.light {
  --bg: #eef1fb;
  --bg2: #e2e8fb;
  --panel: #ffffff;
  --panel2: #f4f6ff;
  --border: #d3dbf5;
  --txt: #14203f;
  --muted: #5b6690;
  --accent: #2f5fe0;
  --accent2: #7b3fe4;
}
body.fa { --sans: 'Vazirmatn', sans-serif; }

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--txt);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(91,140,255,0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(138,91,255,0.15), transparent 55%),
    var(--bg);
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
}
.mono { font-family: var(--mono); }
.accent-txt { color: var(--accent); }

.app-wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 18px 48px;
  position: relative;
}
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 6px;
}
.icon-btn {
  background: var(--panel); border: 1px solid var(--border);
  color: var(--txt); border-radius: 10px; padding: 8px 12px;
  cursor: pointer; font-size: 15px; font-weight: 600;
  transition: transform 0.15s, background 0.2s;
}
.icon-btn:hover { transform: translateY(-2px); background: var(--panel2); }
.lang-btn { min-width: 62px; }

.app-header { text-align: center; margin: 6px 0 22px; }
.app-title {
  font-size: clamp(30px, 6vw, 46px);
  font-weight: 800; margin: 0;
  letter-spacing: -1px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: rise 0.6s ease both;
}
.app-sub { color: var(--muted); margin: 6px 0 0; font-weight: 300; font-size: 15px;
  animation: rise 0.6s 0.1s ease both; }

.tabs {
  display: flex; gap: 10px; justify-content: center; margin-bottom: 22px;
  animation: rise 0.6s 0.15s ease both;
}
.tab {
  padding: 11px 26px; border-radius: 999px;
  border: 1.5px solid var(--border); background: transparent;
  color: var(--muted); font-family: var(--sans); font-weight: 600;
  font-size: 15px; cursor: pointer; transition: all 0.2s;
}
.tab:hover { border-color: var(--accent); color: var(--txt); }
.tab-active {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #fff; border-color: transparent;
  box-shadow: 0 6px 20px rgba(91,140,255,0.35);
}

.main-area { animation: fade 0.35s ease; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 780px) { .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}
.panel { animation: rise 0.4s ease both; }

.fld-label {
  display: block; font-size: 13px; color: var(--muted);
  margin: 14px 0 6px; font-weight: 600;
}
.fld-label:first-child { margin-top: 0; }
.txt-in {
  width: 100%; padding: 11px 13px; border-radius: 10px;
  border: 1.5px solid var(--border); background: var(--panel2);
  color: var(--txt); font-size: 15px; outline: none;
  transition: border 0.2s;
}
.txt-in:focus { border-color: var(--accent); }
select.txt-in { cursor: pointer; }

.cidr-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.cidr-tag {
  background: var(--accent); color: #fff; padding: 5px 12px;
  border-radius: 8px; font-weight: 700; font-size: 15px; min-width: 52px; text-align: center;
}
.slider { flex: 1; min-width: 120px; accent-color: var(--accent); cursor: pointer; }
.mask-preview { color: var(--muted); font-size: 14px; }
.newprefix { margin-top: 12px; font-size: 14px; color: var(--muted); }
.hint { margin-top: 16px; font-size: 12px; color: var(--muted); opacity: 0.8; }

.out-panel { background: linear-gradient(160deg, var(--panel), var(--panel2)); }
.out-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.net-big { font-size: 20px; font-weight: 700; color: var(--accent); }
.badge { padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge-priv { background: rgba(46,230,166,0.15); color: var(--host); }
.badge-pub { background: rgba(91,140,255,0.18); color: var(--accent); }

.divider { height: 1px; background: var(--border); margin: 14px 0; }

.res-row {
  display: flex; justify-content: space-between; align-items: center;
  gap: 10px; padding: 6px 0; font-size: 14px;
}
.res-label { color: var(--muted); flex-shrink: 0; }
.res-val-wrap { display: flex; align-items: center; gap: 6px; }
.res-val { font-weight: 600; word-break: break-all; }
.copy-btn {
  background: transparent; border: none; cursor: pointer;
  font-size: 13px; opacity: 0.6; padding: 2px 4px; color: var(--txt);
  transition: opacity 0.2s, transform 0.15s;
}
.copy-btn:hover { opacity: 1; transform: scale(1.2); }

.bin-block { margin-top: 6px; }
.bin-label { font-size: 12px; color: var(--muted); margin-bottom: 8px; font-weight: 600; }
.binbar {
  display: flex; flex-wrap: wrap; gap: 2px;
  font-family: var(--mono); font-size: 12px;
}
.bitcell {
  padding: 3px 5px; border-radius: 4px; font-weight: 700;
}
.netbit { background: rgba(255,176,32,0.2); color: var(--net); }
.hostbit { background: rgba(46,230,166,0.18); color: var(--host); }
.bitdot { color: var(--muted); align-self: center; padding: 0 1px; }
.bin-legend { display: flex; gap: 16px; margin-top: 10px; font-size: 12px; color: var(--muted); }
.lg { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-inline-end: 4px; vertical-align: middle; }

.err { color: var(--err); font-weight: 600; }

.table-card { margin-top: 18px; }
.table-title { font-weight: 700; margin-bottom: 6px; font-size: 15px; }
.trunc-note { font-size: 12px; color: var(--warn); margin-bottom: 8px; }
.table-scroll { overflow-x: auto; max-height: 460px; overflow-y: auto; border-radius: 10px; }
.sub-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.sub-table th {
  position: sticky; top: 0; background: var(--panel2); color: var(--muted);
  padding: 9px 10px; text-align: start; font-weight: 600;
  border-bottom: 1.5px solid var(--border); white-space: nowrap;
}
.sub-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.sub-table tbody tr:hover { background: var(--panel2); }

.net-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; flex-wrap: nowrap; }
.net-idx { color: var(--muted); font-size: 12px; min-width: 54px; }
.net-ip { flex: 1; min-width: 90px; }
.slash { color: var(--muted); }
.net-cidr { width: 66px; flex-shrink: 0; }
.del-btn {
  background: transparent; border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer; padding: 8px 10px; font-size: 13px; color: var(--txt);
  transition: background 0.2s;
}
.del-btn:hover { background: rgba(255,92,122,0.15); border-color: var(--err); }
.add-btn {
  margin-top: 6px; width: 100%; padding: 11px; border-radius: 10px;
  border: 1.5px dashed var(--border); background: transparent; color: var(--accent);
  font-family: var(--sans); font-weight: 600; cursor: pointer; font-size: 14px;
  transition: all 0.2s;
}
.add-btn:hover { border-color: var(--accent); background: var(--panel2); }

.contig-ok { color: var(--ok); font-size: 13px; font-weight: 600; margin-bottom: 14px; }
.contig-warn { color: var(--warn); font-size: 13px; font-weight: 600; margin-bottom: 14px; }

.app-footer {
  text-align: center; margin-top: 40px; color: var(--muted);
  font-size: 13px; font-weight: 300;
}
.foot-sep { opacity: 0.5; }
.remix-link { color: var(--accent); text-decoration: none; font-weight: 600; }
.remix-link:hover { text-decoration: underline; }

@keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }