/* ============================================
   铁蛋电竞 - FAQ 常见问题 专属样式
   布局：搜索Hero + 分类标签 + 两列手风琴 + 客服卡片
   ============================================ */

/* ===== Hero + 搜索区 ===== */
.faq-hero {
    padding: 70px 0 40px;
    background:
        radial-gradient(ellipse at top, rgba(124, 58, 237, 0.25) 0%, transparent 60%),
        linear-gradient(180deg, rgba(124, 58, 237, 0.1) 0%, transparent 100%);
    text-align: center;
    border-bottom: 1px solid var(--border-light);
}

.faq-hero h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 12px;
    background: linear-gradient(90deg, var(--primary-light), #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.faq-hero-sub {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

/* 搜索框 */
.faq-search-box {
    position: relative;
    max-width: 640px;
    margin: 0 auto 28px;
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 50px;
    padding: 6px 6px 6px 20px;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.15);
}

.faq-search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 4px 30px rgba(124, 58, 237, 0.35);
}

.faq-search-icon {
    font-size: 18px;
    margin-right: 10px;
    opacity: 0.7;
}

.faq-search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 15px;
    padding: 12px 0;
}

.faq-search-input::placeholder {
    color: var(--text-muted);
}

.faq-search-count {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--text-muted);
    padding: 8px 16px;
    background: var(--bg-dark);
    border-radius: 30px;
    margin-left: 8px;
}

/* 分类标签 */
.faq-cats {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    max-width: 720px;
    margin: 0 auto;
}

.faq-cat-btn {
    padding: 9px 20px;
    border-radius: 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s;
    font-family: inherit;
}

.faq-cat-btn:hover {
    border-color: var(--primary);
    color: var(--primary-light);
}

.faq-cat-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 14px rgba(124, 58, 237, 0.4);
}

/* ===== 两列手风琴 ===== */
.faq-main {
    padding: 50px 0 30px;
}

.faq-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}

.faq-col {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* 单个FAQ项 */
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: var(--border);
}

.faq-item.open {
    border-color: var(--primary);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.2);
}

/* 问题按钮 */
.faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: background 0.2s;
}

.faq-q:hover {
    background: var(--primary-bg);
}

.faq-q-icon {
    font-size: 18px;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    border-radius: 8px;
}

.faq-q-text {
    flex: 1;
    line-height: 1.4;
}

.faq-q-arrow {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    border-radius: 50%;
    color: var(--primary-light);
    font-size: 18px;
    font-weight: 300;
    transition: all 0.3s;
}

.faq-item.open .faq-q-arrow {
    background: var(--primary);
    color: #fff;
    transform: rotate(180deg);
}

/* 答案区 - 折叠动画 */
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.faq-item.open .faq-a {
    max-height: 600px;
}

.faq-a-inner {
    padding: 0 18px 18px 62px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
    border-top: 1px solid var(--border-light);
    padding-top: 14px;
    margin-top: -4px;
}

.faq-a-inner p {
    margin-bottom: 10px;
}

.faq-a-inner p:last-child {
    margin-bottom: 0;
}

.faq-a-inner ul,
.faq-a-inner ol {
    margin: 8px 0 12px 20px;
}

.faq-a-inner li {
    margin-bottom: 5px;
}

.faq-a-inner strong {
    color: var(--primary-light);
}

/* 空状态 */
.faq-empty {
    text-align: center;
    padding: 60px 20px;
}

.faq-empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.faq-empty h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.faq-empty p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ===== 底部客服卡片 ===== */
.faq-contact {
    padding: 30px 0 60px;
}

.faq-contact-card {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(91, 33, 182, 0.15));
    border: 1px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 32px 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.faq-contact-left {
    display: flex;
    align-items: center;
    gap: 18px;
}

.faq-contact-icon {
    font-size: 42px;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    flex-shrink: 0;
}

.faq-contact-text h3 {
    font-size: 20px;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.faq-contact-text p {
    color: var(--text-secondary);
    font-size: 14px;
}

.faq-contact-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
    .faq-columns {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .faq-hero {
        padding: 50px 0 30px;
    }
    .faq-hero h1 {
        font-size: 30px;
    }
    .faq-search-box {
        flex-direction: column;
        border-radius: 16px;
        padding: 14px;
        gap: 8px;
    }
    .faq-search-input {
        padding: 8px 0;
        text-align: center;
    }
    .faq-search-count {
        margin-left: 0;
    }
    .faq-a-inner {
        padding-left: 18px;
    }
    .faq-contact-card {
        flex-direction: column;
        text-align: center;
    }
    .faq-contact-left {
        flex-direction: column;
    }
}