/* ═══════════════════════════════════════════════════════════════════
   中式英语修理厂 Chinglish Fixer (E9) — /chs/English/ChinglishFixer
   主色：琥珀 #b45309 → #f59e0b，和 Stress Beat 的靛蓝、
   Preposition Pictures 的青绿区分开。
   ═══════════════════════════════════════════════════════════════════ */

/* ── 等级选择 ─────────────────────────────────────────────────────── */
.cf-level-btn {
    border: 2px solid var(--bs-border-color);
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    border-radius: 0.5rem;
    padding: 0.4rem 0.9rem;
    font-weight: 600;
    line-height: 1.2;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}

.cf-level-btn:hover { border-color: #f59e0b; }

.cf-level-btn.active {
    background: #b45309;
    border-color: #b45309;
    color: #fff;
}

/* ── 句子（每个词一个按钮） ───────────────────────────────────────── */
.cf-sentence {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.2rem 0.15rem;
    padding: 0.75rem 0.5rem;
    background: rgba(245, 158, 11, 0.08);
    border-radius: 0.6rem;
}

.cf-token {
    padding: 0.35rem 0.5rem;
    font-size: clamp(1rem, 4.2vw, 1.35rem);
    font-weight: 600;
    line-height: 1.25;
    border: 2px solid transparent;
    background: transparent;
    color: var(--bs-body-color);
    border-radius: 0.4rem;
    cursor: pointer;
    transition: background-color 0.12s, border-color 0.12s;
}

.cf-token:hover:not(:disabled) {
    border-color: #f59e0b;
    background: rgba(245, 158, 11, 0.18);
}

.cf-token:disabled { cursor: default; }

/* 病灶：用下划波浪线标出来，和「选错了」的红底分开表示。 */
.cf-token-answer {
    background: rgba(220, 53, 69, 0.16);
    border-color: #dc3545;
    text-decoration: underline wavy #dc3545 2px;
    text-underline-offset: 4px;
}

.cf-token-wrong {
    background: rgba(108, 117, 125, 0.25);
    border-color: #6c757d;
    opacity: 0.8;
}

.cf-punct {
    font-size: clamp(1rem, 4.2vw, 1.35rem);
    font-weight: 600;
    margin-left: -0.15rem;
    margin-right: 0.15rem;
}

/* ── 改法选项 ─────────────────────────────────────────────────────── */
.cf-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
}

@media (min-width: 768px) {
    .cf-options { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.cf-option {
    padding: 0.7rem 0.5rem;
    font-size: 1rem;
    font-weight: 700;
    border: 2px solid #fcd34d;
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    border-radius: 0.6rem;
    cursor: pointer;
    transition: transform 0.1s, background-color 0.15s, border-color 0.15s;
}

.cf-option:hover:not(:disabled) {
    border-color: #f59e0b;
    transform: translateY(-2px);
}

.cf-option:disabled { cursor: default; }

.cf-option-correct {
    background: #198754;
    border-color: #198754;
    color: #fff;
}

.cf-option-wrong {
    background: #dc3545;
    border-color: #dc3545;
    color: #fff;
    opacity: 0.85;
}

/* ── 反馈与复盘 ───────────────────────────────────────────────────── */
.cf-fixed {
    font-size: 1.2rem;
    font-weight: 700;
}

.cf-review-bad {
    font-weight: 600;
    text-decoration: line-through;
    opacity: 0.7;
}

.cf-review-good {
    font-weight: 700;
    color: #198754;
}

/* ── 深色模式 ─────────────────────────────────────────────────────── */
[data-bs-theme="dark"] .cf-sentence { background: rgba(245, 158, 11, 0.14); }
[data-bs-theme="dark"] .cf-option { border-color: #6b5322; }
[data-bs-theme="dark"] .cf-option:hover:not(:disabled) { border-color: #fbbf24; }
[data-bs-theme="dark"] .cf-level-btn.active { background: #d97706; border-color: #d97706; }
[data-bs-theme="dark"] .cf-token-answer { background: rgba(220, 53, 69, 0.28); }
[data-bs-theme="dark"] .cf-review-good { color: #4ade80; }