/* ── LAYOUT ── */
.df-main { max-width: 1240px; margin: 0 auto; padding: 24px 24px 60px; }
.df-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ── INPUT PANES ── */
.df-pane { padding: 16px; display: flex; flex-direction: column; }
.df-textarea {
  width: 100%; min-height: 240px; resize: vertical; margin-top: 8px;
  border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px;
  font-family: var(--font-mono); font-size: 13px; line-height: 1.55; color: var(--text); background: var(--bg);
}
.df-textarea:focus { outline: none; border-color: var(--text-muted); }

/* ── TOOLBAR ── */
.df-toolbar { display: flex; align-items: center; gap: 10px; margin: 14px 0; flex-wrap: wrap; }
.df-stats { display: inline-flex; gap: 8px; }
.df-badge { font-family: var(--font-mono); font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 99px; }
.df-badge--add { background: #e3f6e6; color: #1b7a2e; }
.df-badge--del { background: #fde8e8; color: #b3261e; }
.df-note { margin-left: auto; }

/* ── RESULT ── */
.df-result-card { padding: 16px; }
.df-result { font-family: var(--font-mono); font-size: 13px; line-height: 1.55; overflow-x: auto; }
.df-line { white-space: pre-wrap; word-break: break-word; padding: 1px 8px; border-radius: 3px; display: flex; gap: 8px; }
.df-line__sign { flex-shrink: 0; width: 12px; opacity: .6; user-select: none; }
.df-line--add { background: #e3f6e6; color: #14531f; }
.df-line--del { background: #fde8e8; color: #7a1c16; text-decoration: line-through; text-decoration-color: rgba(179,38,30,.35); }
.df-identical { font-size: 14px; color: var(--text-muted); margin: 0; }

/* ── LANG SWITCHER ── */
.lang-switcher { position: relative; }
.lang-current { display:flex;align-items:center;gap:5px;padding:5px 10px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);font-size:12px;font-weight:500;color:var(--text);cursor:pointer;font-family:var(--font-sans); }
.lang-code { font-family:var(--font-mono);font-size:11px;color:var(--text-muted); }
.lang-menu { display:none;position:absolute;top:calc(100% + 6px);right:0;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:0 8px 24px rgba(0,0,0,.10);z-index:200;padding:6px;width:210px;max-height:340px;overflow-y:auto; }
.lang-menu.open { display:flex;flex-direction:column; }
.lang-option { display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius);font-size:13px;color:var(--text);text-decoration:none;transition:background .12s; }
.lang-option:hover { background:var(--bg-muted); }
.lang-option.active { background:var(--accent);font-weight:500; }

/* ── RESPONSIVE ── */
@media (max-width: 800px) {
  .df-inputs { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .df-main { padding: 16px 14px 40px; }
  .df-note { margin-left: 0; }
}