:root {
  --bg: #0b1220;
  --panel: #111827;
  --panel-2: #0f172a;
  --line: #1f2a3d;
  --text: #e5eef7;
  --muted: #93a4bb;
  --teal: #14b8a6;
  --teal-dim: #0f766e;
  --warn: #f59e0b;
  --bad: #f87171;
  --ok: #34d399;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { min-height: 100vh; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 28px 20px 60px; }

.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 55%, #0f766e 100%);
  border-radius: 18px;
  padding: 28px 28px 22px;
  box-shadow: var(--shadow);
}
.hero h1 { margin: 0 0 8px; font-size: 1.85rem; letter-spacing: -0.03em; }
.hero p { margin: 0; color: #d5e3f0; line-height: 1.5; }
.stats { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.stat {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  padding: 8px 12px;
  min-width: 140px;
}
.stat .k { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: #99f6e4; }
.stat .v { font-family: "IBM Plex Mono", ui-monospace, monospace; font-weight: 600; margin-top: 2px; }

.tabs { display: flex; gap: 8px; margin: 22px 0 16px; }
.tab {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
}
.tab.active { background: var(--teal-dim); color: white; border-color: var(--teal-dim); }

.grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 1.05rem; }
textarea {
  width: 100%;
  min-height: 280px;
  resize: vertical;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 13px;
  line-height: 1.45;
}
.row { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
button, .file-btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 600;
}
.primary { background: var(--teal); color: #042f2e; }
.ghost { background: #1e293b; color: var(--text); }
button:disabled { opacity: .45; cursor: not-allowed; }
input[type="file"] { display: none; }
label.file-btn { background: #1e293b; color: var(--text); display: inline-block; }
input[type="range"] { width: 100%; }
.hint { color: var(--muted); font-size: 13px; line-height: 1.45; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 16px 0 10px; }
@media (max-width: 700px) { .metrics { grid-template-columns: 1fr 1fr; } }
.metric {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}
.metric b { display: block; font-size: 1.2rem; }
.metric span { color: var(--muted); font-size: 12px; }

.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 14px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { background: #0b1628; position: sticky; top: 0; }
tr.unmatched td { color: #fca5a5; }
.badge { font-size: 11px; padding: 2px 7px; border-radius: 999px; background: #134e4a; }
.badge.off { background: #7f1d1d; }

.hidden { display: none; }
footer { margin-top: 28px; color: var(--muted); font-size: 13px; }
code { background: #1e293b; padding: 1px 5px; border-radius: 5px; }