/* ============================================================
   Text Diff Checker — tool-specific styles on base.css.
   No :root / theme; consumes base tokens only.
   ============================================================ */

.tdf-tool { background: var(--bg); transition: background 0.5s; }
.tdf-tool .tool-instructions-wrapper { text-align: center; margin-bottom: 24px; }
.tdf-tool .tool-section-title {
    font-family: var(--font-head); font-weight: 800;
    font-size: clamp(1.6rem, 4vw, 2.4rem); color: var(--text);
    margin: 0 0 12px; letter-spacing: -0.3px;
}
.tdf-tool .text-primary-red { color: var(--accent-2); }
.tdf-tool .tool-section-texte {
    color: var(--text-muted); font-size: 0.95rem; line-height: 1.7;
    max-width: 720px; margin: 0 auto;
}

.tdf-panel {
    background: var(--panel-bg); border: 1px solid var(--panel-border);
    border-radius: var(--radius); box-shadow: var(--shadow-soft);
    padding: 24px; max-width: 960px; margin: 0 auto;
}

.tdf-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
@media (max-width: 640px) { .tdf-inputs { grid-template-columns: 1fr; } }
.tdf-field { display: flex; flex-direction: column; gap: 8px; }
.tdf-textarea {
    width: 100%; box-sizing: border-box; padding: 12px 14px;
    background: var(--card-bg); color: var(--text);
    border: 1.5px solid var(--border-color); border-radius: var(--radius-sm);
    font-family: var(--font-mono); font-size: 0.9rem; line-height: 1.6; resize: vertical;
    min-height: 200px;
}
.tdf-textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(231,76,60,0.15); }

.tdf-options { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 16px; }
.tdf-check { display: inline-flex; align-items: center; gap: 8px; color: var(--text); font-size: 0.88rem; font-weight: 600; cursor: pointer; }
.tdf-check input { accent-color: var(--purple); cursor: pointer; }

.tdf-summary { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0 12px; }
.tdf-badge { font-size: 0.8rem; font-weight: 800; padding: 4px 12px; border-radius: 999px; }
.tdf-badge--add { background: rgba(46,204,113,0.16); color: #2ecc71; }
.tdf-badge--del { background: rgba(231,76,60,0.16); color: var(--accent); }
.tdf-badge--eq  { background: var(--card-bg); color: var(--text-muted); }
.tdf-badge--same { background: rgba(46,204,113,0.16); color: #2ecc71; }

/* Diff output */
.tdf-output { margin-top: 8px; }
.tdf-empty { color: var(--text-muted); text-align: center; padding: 30px 0; margin: 0; }
.tdf-diff {
    border: 1px solid var(--border-color); border-radius: var(--radius-sm);
    overflow: hidden; font-family: var(--font-mono); font-size: 0.85rem;
}
.tdf-line { display: grid; grid-template-columns: 46px 46px 20px 1fr; align-items: start; }
.tdf-line--add { background: rgba(46,204,113,0.12); }
.tdf-line--del { background: rgba(231,76,60,0.12); }
.tdf-line--eq  { background: transparent; }
.tdf-ln { color: var(--text-muted); opacity: 0.6; text-align: right; padding: 3px 6px; font-size: 0.75rem; user-select: none; }
.tdf-sign { text-align: center; font-weight: 800; padding: 3px 0; }
.tdf-line--add .tdf-sign { color: #2ecc71; }
.tdf-line--del .tdf-sign { color: var(--accent); }
.tdf-text { color: var(--text); padding: 3px 8px; white-space: pre-wrap; word-break: break-word; }
.tdf-blank { color: var(--text-muted); opacity: 0.5; }