:root {
  --bg: #071710;
  --bg2: #0a2018;
  --card: #0e241b;
  --pane: #081b13;
  --line: #1c3d2e;
  --text: #eafff2;
  --muted: #86b8a0;
  --accent: #4ade80;
  --accent2: #a3e635;
  --shadow: 0 20px 60px rgba(0,0,0,.5);
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 28px 16px;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 15% -10%, #103d28 0%, transparent 55%),
    radial-gradient(900px 500px at 110% 20%, #1a4d1f 0%, transparent 50%),
    linear-gradient(160deg, var(--bg), var(--bg2));
}

.card {
  width: min(880px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px 26px 18px;
}

.head { text-align: center; margin-bottom: 18px; }
.logo { font-size: 40px; line-height: 1; }
h1 {
  margin: 6px 0 2px;
  font-size: 30px;
  letter-spacing: .5px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.sub { margin: 0; color: var(--muted); font-size: 14px; }

.direction {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--pane);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 14px;
  margin-bottom: 14px;
  font-weight: 600;
  font-size: 15px;
}
.swap {
  border: none;
  cursor: pointer;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  padding: 8px 14px;
  border-radius: 10px;
  transition: transform .12s ease, filter .12s ease;
}
.swap:hover { transform: translateY(-1px); filter: brightness(1.08); }
.swap:active { transform: translateY(0); }

.panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 620px) { .panes { grid-template-columns: 1fr; } }

.pane { display: flex; flex-direction: column; gap: 6px; }
.pane-head { display: flex; align-items: center; justify-content: space-between; }
label { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }

textarea {
  width: 100%;
  min-height: 190px;
  resize: vertical;
  background: var(--pane);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  padding: 14px;
  font-size: 16px;
  line-height: 1.5;
  font-family: inherit;
  outline: none;
  transition: border-color .15s ease;
}
textarea:focus { border-color: var(--accent); }
#output { background: #12331f0d; color: var(--accent2); font-weight: 600; }

.foot {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.stats { color: var(--muted); font-size: 13px; margin-right: auto; }
.dict { color: var(--muted); font-size: 13px; }
.dict b { color: var(--text); }

.ghost {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  padding: 7px 12px;
  border-radius: 9px;
  cursor: pointer;
  font-size: 13px;
  transition: all .12s ease;
}
.ghost:hover { color: var(--text); border-color: var(--accent); }

.lexicon {
  margin-top: 16px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
.lexicon summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  list-style: none;
  user-select: none;
}
.lexicon summary:hover { color: var(--text); }
.lexicon summary::-webkit-details-marker { display: none; }
.lex-body {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 6px 18px;
  margin-top: 12px;
}
.lex-row { display: flex; align-items: baseline; gap: 8px; font-size: 14px; }
.lex-human { color: var(--muted); min-width: 96px; }
.lex-arrow { color: var(--line); }
.lex-alien { color: var(--accent); font-weight: 700; letter-spacing: .3px; }

.credit { color: var(--muted); font-size: 12px; opacity: .8; text-align: center; margin: 0; }