/**
 * story-box.css — 故事盒子 + 教教我 通用样式
 *
 * 用法：页面 <head> 中引用本文件后，通过 CSS 变量设置主题色：
 *
 *   :root {
 *       --story-accent: #e67e22;   /* 主色（徽章、按钮、高亮） */
 *       --story-bg: #fff8f0;       /* 故事卡背景 */
 *       --story-border: #f0d9b5;   /* 故事卡边框 */
 *       --story-hover: #d35400;    /* 按钮悬停 */
 *       --story-input-border: #d4a56a; /* 输入框边框 */
 *       --story-btn-text: #fff;    /* 按钮文字色 */
 *   }
 *
 * 不设置则使用默认值（金色主题）。
 */

:root {
    --story-accent: #e67e22;
    --story-bg: #fff8f0;
    --story-border: #f0d9b5;
    --story-hover: #d35400;
    --story-input-border: #d4a56a;
    --story-btn-text: #fff;
    --teach-accent: #667eea;
}

/* ===== 故事盒子 ===== */
.story-box {
    background: var(--story-bg);
    border: 2px solid var(--story-border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 14px;
}
.story-box .story-badge {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--story-accent);
    margin-bottom: 8px;
}
.story-box .story-text {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #444;
    padding: 10px 14px;
    background: #fff;
    border-radius: 8px;
    border-left: 4px solid var(--story-border);
    margin-bottom: 14px;
    white-space: pre-wrap;
}
.story-box .story-extract {
    border-top: 1px dashed var(--story-border);
    padding-top: 12px;
}
.story-box .extract-item {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
    padding: 6px 0;
}
.story-box .extract-item .extract-label {
    font-size: 0.92rem;
    font-weight: 500;
    color: #555;
    min-width: 80px;
}
.story-box .extract-item .extract-input {
    padding: 6px 12px;
    border: 2px solid var(--story-input-border);
    border-radius: 6px;
    font-size: 1rem;
    width: 80px;
    font-family: 'Consolas', monospace;
}
.story-box .extract-item .extract-input:focus {
    border-color: var(--story-accent);
    outline: none;
}
.story-box .extract-item .extract-input.correct {
    background: #d4edda;
    border-color: #27ae60;
}
.story-box .extract-item .extract-input.wrong {
    background: #fff5f5;
    border-color: #e74c3c;
}
.story-box .extract-item .extract-unit {
    font-size: 0.9rem;
    color: #888;
}
.story-box .extract-item .extract-hint-btn {
    padding: 3px 12px;
    border: 1px solid var(--story-accent);
    border-radius: 14px;
    background: #fff;
    color: var(--story-accent);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}
.story-box .extract-item .extract-hint-btn:hover {
    background: var(--story-accent);
    color: var(--story-btn-text);
}
.story-box .extract-item .extract-hint-text {
    display: none;
    font-size: 0.82rem;
    color: var(--story-accent);
    margin: 2px 0 0 80px;
    width: 100%;
}
.story-box .extract-item .extract-hint-text.show { display: block; }
.story-box .extract-actions {
    margin-top: 10px;
    display: flex;
    gap: 8px;
    align-items: center;
}
.story-box .extract-btn {
    padding: 8px 24px;
    background: var(--story-accent);
    color: var(--story-btn-text);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}
.story-box .extract-btn:hover { background: var(--story-hover); }
.story-box .extract-btn:disabled { background: #bbb; cursor: not-allowed; }
.story-box .extract-feedback { font-size: 0.9rem; min-height: 1.4em; }
.story-box .extract-feedback.correct { color: #27ae60; }
.story-box .extract-feedback.wrong { color: #e74c3c; }
.story-box .extract-done-badge {
    text-align: center;
    padding: 8px;
    background: #d4edda;
    border-radius: 8px;
    color: #155724;
    font-weight: 600;
    margin-bottom: 10px;
}
.extract-area-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: #555;
    margin-bottom: 10px;
}

/* ===== 教教我安全出口 ===== */
.teach-me-area { margin: 6px 0 0 34px; }
.teach-me-btn {
    padding: 3px 12px;
    border: 1px solid #ccc;
    border-radius: 12px;
    background: #fff;
    color: #999;
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.2s;
}
.teach-me-btn:hover { border-color: var(--teach-accent); color: var(--teach-accent); }
.teach-me-btn.hidden { display: none; }
.teach-me-content {
    margin-top: 8px;
    padding: 10px 14px;
    background: var(--story-bg);
    border: 1px solid var(--story-border);
    border-radius: 8px;
    font-size: 0.95rem;
    display: none;
    line-height: 1.7;
}
.teach-me-content.show { display: block; }
.teach-me-content .tm-label {
    font-weight: 600;
    color: var(--story-accent);
    margin-bottom: 4px;
}
.teach-me-content .tm-answer { color: #27ae60; font-weight: 500; }

/* ===== 输入框单位标签 ===== */
.unit-label { font-size: 0.9rem; color: #888; font-weight: 500; margin-left: 3px; }
.unit-reminder { font-size: 0.78rem; color: var(--story-accent); font-weight: 400; display: block; margin-top: 2px; }

/* ===== 可折叠提示按钮 ===== */
.hint-reveal-area {
    margin: 8px 0 8px 34px;
    display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
}
.hint-reveal-btn {
    padding: 5px 14px;
    border: 2px solid var(--story-accent);
    border-radius: 20px;
    background: #fff;
    color: var(--story-accent);
    font-size: 0.85rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}
.hint-reveal-btn:hover { background: var(--story-accent); color: var(--story-btn-text); }
.hint-reveal-btn.revealed {
    background: #27ae60;
    border-color: #27ae60;
    color: #fff;
    cursor: default;
}
.hint-detail {
    margin: 4px 0 0 34px;
    padding: 8px 14px;
    background: var(--story-bg);
    border: 1px dashed var(--story-border);
    border-radius: 6px;
    font-size: 1rem;
    display: none;
}
.hint-detail.show { display: block; }
