:root {
  --bg: #0b1220;
  --card: #131c2e;
  --card2: #1b2740;
  --line: #263453;
  --text: #e6ecf5;
  --muted: #93a2c0;
  --accent: #2f8fff;
  --accent2: #1567d3;
  --ok: #2ecc71;
  --warn: #ffb020;
  --err: #ff5c5c;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, #0a1120, #0b1220 40%);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}
.langbar { position: absolute; top: 14px; right: 16px; display: flex; gap: 4px; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.lang { background: transparent; border: none; color: var(--muted); padding: 5px 12px; border-radius: 999px; font-size: .78rem; font-weight: 600; cursor: pointer; }
.lang.active { background: var(--accent); color: #fff; }
.lang:hover { color: var(--text); }

header { padding: 28px 20px 8px; text-align: center; }
header h1 { margin: 0; font-size: 1.5rem; }
header .sub { color: var(--muted); margin: 6px 0 0; font-size: .95rem; }

.tabs { display: flex; gap: 8px; justify-content: center; padding: 16px; flex-wrap: wrap; }
.tab {
  background: var(--card); color: var(--muted); border: 1px solid var(--line);
  padding: 10px 22px; border-radius: 999px; cursor: pointer; font-size: .95rem;
}
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }

.tab-panel { display: none; max-width: 860px; margin: 0 auto; padding: 0 16px 40px; }
.tab-panel.active { display: block; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin-bottom: 18px;
}
.card h2 { margin: 0 0 6px; font-size: 1.1rem; }
.hint { color: var(--muted); font-size: .85rem; margin: 2px 0 14px; }

.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 14px; }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
label { display: flex; flex-direction: column; gap: 6px; font-size: .82rem; color: var(--muted); }
label.inline { flex-direction: row; align-items: center; gap: 6px; color: var(--muted); }

input, select {
  background: var(--card2); border: 1px solid var(--line); color: var(--text);
  padding: 10px 12px; border-radius: 9px; font-size: .95rem; width: 100%;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 8px; }
.row input { flex: 1; min-width: 180px; }

button {
  background: var(--card2); color: var(--text); border: 1px solid var(--line);
  padding: 10px 18px; border-radius: 9px; cursor: pointer; font-size: .92rem; font-weight: 500;
}
button:hover { border-color: var(--accent); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; margin-top: 4px; }
button.primary:hover { background: var(--accent2); }
button.danger { background: transparent; border-color: var(--err); color: var(--err); padding: 6px 12px; font-size: .82rem; }

.status, .result { margin-top: 12px; font-size: .9rem; }
.status.ok, .result.ok { color: var(--ok); }
.err { color: var(--err); font-size: .85rem; margin-top: 8px; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: .72rem; font-weight: 600; }
.badge.active { background: rgba(46,204,113,.15); color: var(--ok); }
.badge.new { background: rgba(255,176,32,.15); color: var(--warn); }

.result .box {
  background: var(--card2); border: 1px solid var(--line); border-radius: 9px;
  padding: 14px; margin-top: 10px;
}
.result code, .mono { font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.copy { cursor: pointer; color: var(--accent); font-size: .78rem; margin-left: 8px; }

.list { margin-top: 12px; }
.dp {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: var(--card2); border: 1px solid var(--line); border-radius: 9px;
  padding: 12px 14px; margin-bottom: 8px; flex-wrap: wrap;
}
.dp .info { font-size: .85rem; }
.dp .info b { font-size: .95rem; }
.dp .meta { color: var(--muted); font-size: .78rem; }

.adv { margin: 8px 0 14px; }
.adv summary { cursor: pointer; color: var(--accent); font-size: .85rem; }
.adv .grid { margin-top: 12px; }

.progress { background: var(--card2); border-radius: 999px; height: 12px; overflow: hidden; border: 1px solid var(--line); }
.bar { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), #57b0ff); transition: width .6s ease; }
.note { margin: 10px 0; font-size: .9rem; }
.log {
  background: #06090f; border: 1px solid var(--line); border-radius: 9px; color: #9fe6b0;
  padding: 12px; font-size: .78rem; max-height: 220px; overflow: auto; white-space: pre-wrap; margin: 0;
}

footer { text-align: center; color: var(--muted); font-size: .78rem; padding: 10px 20px 30px; max-width: 640px; margin: 0 auto; }

.gate { position: fixed; inset: 0; background: rgba(6,9,15,.92); display: flex; align-items: center; justify-content: center; z-index: 50; }
.gate-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; width: min(360px, 90vw); text-align: center; }
.gate-box input { margin: 10px 0; }

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--card2); border: 1px solid var(--accent); color: var(--text);
  padding: 10px 18px; border-radius: 9px; font-size: .88rem; z-index: 60; box-shadow: 0 6px 20px rgba(0,0,0,.4);
}