/* ==================== 使用说明弹窗样式 ==================== */

#help-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s ease-out;
}

#help-modal.active {
    display: flex;
}

.help-modal-container {
    background: var(--lc-bg-card);
    border: 1px solid var(--lc-border);
    border-radius: 12px;
    width: 100%;
    max-width: 720px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.9);
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 弹窗头部 */
.help-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: linear-gradient(90deg, rgba(201, 169, 97, 0.1) 0%, transparent 100%);
    border-bottom: 1px solid var(--lc-border);
}

.help-header-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.title-icon {
    font-size: 28px;
}

.title-text h3 {
    color: var(--lc-gold);
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    font-family: 'Noto Serif SC', serif;
}

.title-text span {
    color: var(--lc-text-muted);
    font-size: 11px;
    letter-spacing: 2px;
    font-family: 'Cinzel', serif;
}

.help-close-btn {
    background: none;
    border: none;
    color: var(--lc-text-muted);
    font-size: 20px;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.help-close-btn:hover {
    color: var(--lc-gold);
    background: rgba(201, 169, 97, 0.1);
}

/* 弹窗主体 */
.help-modal-body {
    padding: 24px;
    overflow-y: auto;
    max-height: calc(90vh - 80px);
}

/* 章节标题 */
.help-section {
    margin-bottom: 28px;
}

.help-section:last-of-type {
    margin-bottom: 20px;
}

.help-section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.section-num {
    font-family: 'Cinzel', serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--lc-gold);
    opacity: 0.5;
}

.section-label {
    color: var(--lc-gold);
    font-size: 15px;
    font-weight: 600;
    font-family: 'Noto Serif SC', serif;
}

/* 步骤卡片 */
.help-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.help-step {
    background: var(--lc-bg-secondary);
    border: 1px solid var(--lc-border);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    gap: 12px;
    transition: all 0.3s;
}

.help-step:hover {
    border-color: var(--lc-gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.step-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.step-content h4 {
    color: var(--lc-text);
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 6px 0;
}

.step-content p {
    color: var(--lc-text-secondary);
    font-size: 12px;
    line-height: 1.6;
    margin: 0;
}

/* 功能介绍 */
.help-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.help-feature {
    background: var(--lc-bg-secondary);
    border: 1px solid var(--lc-border);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    gap: 12px;
    transition: all 0.3s;
}

.help-feature:hover {
    border-color: var(--lc-gold-dark);
}

.feature-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 18px;
}

.feature-timer {
    background: rgba(100, 150, 200, 0.15);
    color: rgba(150, 180, 220, 0.9);
}

.feature-ranking {
    background: rgba(201, 169, 97, 0.15);
    color: var(--lc-gold);
}

.feature-filter {
    background: rgba(150, 100, 200, 0.15);
    color: rgba(180, 150, 220, 0.9);
}

.feature-content h4 {
    color: var(--lc-text);
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 6px 0;
}

.feature-content p {
    color: var(--lc-text-secondary);
    font-size: 12px;
    line-height: 1.5;
    margin: 0;
}

/* 小贴士 */
.help-tips .tips-grid {
    display: grid;
    gap: 10px;
}

.tip-item {
    background: rgba(201, 169, 97, 0.05);
    border: 1px solid rgba(201, 169, 97, 0.2);
    border-radius: 8px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--lc-text-secondary);
    font-size: 13px;
}

.tip-icon {
    font-size: 16px;
    flex-shrink: 0;
}

/* 页脚 */
.help-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--lc-border);
    color: var(--lc-text-muted);
    font-size: 12px;
}

.help-footer a {
    color: var(--lc-gold-dark);
    text-decoration: none;
    transition: color 0.3s;
}

.help-footer a:hover {
    color: var(--lc-gold);
}

.help-version {
    margin-top: 8px;
    opacity: 0.7;
    font-size: 11px;
}

/* 响应式设计 */
@media (max-width: 640px) {
    .help-modal-container {
        max-height: 95vh;
        border-radius: 10px;
    }
    
    .help-modal-header {
        padding: 16px 20px;
    }
    
    .help-modal-body {
        padding: 16px;
    }
    
    .help-steps,
    .help-features {
        grid-template-columns: 1fr;
    }
    
    .help-step,
    .help-feature {
        padding: 14px;
    }
    
    .section-num {
        font-size: 20px;
    }
    
    .section-label {
        font-size: 14px;
    }
}

/* 方便JS通过id访问 */
#help-modal {
    /* ID选择器在前面定义 */
}