/* ═══════════════════════════════════════════
   Text Diff Checker
   Shared component styles come from css/tool-base.css.
   ═══════════════════════════════════════════ */

.tdc-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: start;
}
.tdc-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}
.tdc-card {
  padding: 1.05rem 1.15rem;
  border: 1px solid var(--t-border-glass);
  border-radius: var(--t-radius);
  background: var(--t-bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.tdc-label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-tertiary, #888);
}
.tdc-textarea {
  width: 100%;
  box-sizing: border-box;
  min-height: 150px;
  resize: vertical;
  padding: 0.85rem 1rem;
  border: 1.5px solid var(--t-border);
  border-radius: var(--t-radius-sm);
  background: var(--t-bg);
  color: var(--text);
  font-family: var(--t-mono);
  font-size: 0.8rem;
  line-height: 1.55;
}
.tdc-textarea:focus {
  outline: none;
  border-color: var(--t-accent);
  box-shadow: 0 0 0 3px var(--t-accent-light);
}
.tdc-mode-pills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
  margin-bottom: 0.5rem;
}
.tdc-pill {
  padding: 0.6rem 0.4rem;
  border: 1.5px solid var(--t-border);
  border-radius: 100px;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--t-font);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color .2s, color .2s, background .2s;
}
.tdc-pill:hover { border-color: var(--t-accent); color: var(--t-accent); background: var(--t-accent-light); }
.tdc-pill.active {
  background: linear-gradient(135deg, var(--t-accent), var(--t-accent-2));
  color: #fff;
  border-color: transparent;
}
.tdc-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.6rem;
}
.tdc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.66rem 1.15rem;
  border-radius: 100px;
  font-family: var(--t-font);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  border: 1.5px solid var(--t-border);
  background: var(--t-bg);
  color: var(--text-secondary);
  transition: transform .2s, filter .2s, border-color .2s, color .2s, background .2s;
}
.tdc-btn:hover { transform: translateY(-1px); }
.tdc-btn-primary {
  flex: 1;
  border-color: transparent;
  background: linear-gradient(135deg, var(--t-accent), var(--t-accent-2));
  color: #fff;
}
.tdc-btn-primary:hover { filter: brightness(1.08); }
.tdc-btn-ghost:hover {
  border-color: var(--t-accent);
  color: var(--t-accent);
  background: var(--t-accent-light);
}
.tdc-stats {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.9rem;
}
.tdc-stat {
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  font-family: var(--t-mono);
  font-size: 0.78rem;
  font-weight: 800;
}
.tdc-stat-added { background: var(--t-green-light); color: var(--t-green); }
.tdc-stat-removed { background: var(--t-red-light); color: var(--t-red); }
.tdc-stat-same { background: var(--t-border); color: var(--text-tertiary, #888); }
.tdc-legend {
  display: flex;
  gap: 1rem;
  margin-top: 0.65rem;
  font-size: 0.72rem;
  color: var(--text-tertiary, #888);
}
.tdc-legend span::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  margin-right: 0.35rem;
}
.tdc-legend-added::before { background: var(--t-green); }
.tdc-legend-removed::before { background: var(--t-red); }
.tdc-legend-same::before { background: var(--t-border); }
.tdc-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}
.tdc-card-title { margin: 0; font-size: 0.92rem; font-weight: 800; color: var(--text); }
.tdc-mini-btn {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--t-border);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  font-size: 0.85rem;
  transition: border-color .2s, background .2s;
}
.tdc-mini-btn:hover { border-color: var(--t-accent); background: var(--t-accent-light); }
.tdc-output {
  padding: 0.9rem 1rem;
  border: 1px solid var(--t-border);
  border-radius: var(--t-radius-sm);
  background: var(--t-bg);
  font-family: var(--t-mono);
  font-size: 0.78rem;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 420px;
  overflow: auto;
  color: var(--text);
}
.tdc-output .tdc-ins {
  background: var(--t-green-light);
  color: var(--t-green);
  border-radius: 3px;
  padding: 0 2px;
  font-weight: 700;
}
.tdc-output .tdc-del {
  background: var(--t-red-light);
  color: var(--t-red);
  text-decoration: line-through;
  border-radius: 3px;
  padding: 0 2px;
}
.tdc-empty { color: var(--text-tertiary, #888); }
.tdc-notice {
  margin: 0;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--t-border);
  border-radius: var(--t-radius-sm);
  background: var(--t-bg);
  color: var(--text-tertiary, #888);
  font-size: 0.75rem;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .tdc-layout { grid-template-columns: 1fr; }
}