/**
 * FAQ 페이지 스타일 (사용자)
 */

/* ========================================
   페이지 헤더
   ======================================== */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ========================================
   카테고리 탭
   ======================================== */
.category-tabs-wrapper {
    margin-bottom: var(--spacing-xl);
}

.category-tabs {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
    padding: var(--spacing-xs);
    background: var(--color-gray-100);
    border-radius: var(--border-radius-lg);
}

.category-tab {
    padding: var(--spacing-md) var(--spacing-xl);
    background: transparent;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition-base);
}

.category-tab:hover {
    color: var(--color-dark);
    background: var(--color-white);
}

.category-tab.active {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* ========================================
   FAQ 목록
   ======================================== */
.faq-list {
    max-width: 900px;
    margin: 0 auto var(--spacing-3xl);
}
.faq-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
}

/* 질문 영역 */
.faq-question {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: background 0.2s;
}

.faq-question:hover {
    background: var(--color-gray-50);
}

.faq-category-badge {
    flex-shrink: 0;
    padding: 4px 12px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 700;
}

.faq-question-text {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.4;
}

.faq-toggle-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-gray-100);
    border-radius: 50%;
    transition: transform 0.3s, background 0.2s;
}

.faq-toggle-icon svg {
    color: var(--color-gray-600);
    transition: transform 0.3s;
}

/* 답변 영역 */
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer-content {
    padding: 0 var(--spacing-xl) var(--spacing-xl) var(--spacing-xl);
    padding-left: calc(var(--spacing-xl) + 70px); /* 카테고리 배지 너비만큼 들여쓰기 */
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-gray-700);
    word-break: break-word;
    overflow-wrap: break-word;
}

.faq-answer-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: var(--spacing-lg) 0;
    border-radius: var(--border-radius-md);
}

/* 열린 상태 */
.faq-item.open .faq-toggle-icon {
    background: var(--color-primary);
}

.faq-item.open .faq-toggle-icon svg {
    color: var(--color-white);
    transform: rotate(180deg);
}

.faq-item.open .faq-answer {
    max-height: 9999px;
    transition: max-height 0.5s ease-in;
}

/* ========================================
   로딩 상태
   ======================================== */
.faq-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-500);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.faq-loading p {
    font-size: 0.95rem;
}

/* ========================================
   빈 상태
   ======================================== */
.faq-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-500);
    text-align: center;
}

.faq-empty svg {
    margin-bottom: var(--spacing-md);
    stroke: var(--color-gray-400);
}

.faq-empty p {
    font-size: 1rem;
    margin: 0;
}

/* ========================================
   뒤로가기 네비게이션
   ======================================== */
.back-nav {
    margin-bottom: var(--spacing-xl);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition-base);
    border-radius: var(--border-radius-md);
}

.btn-back:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

.btn-back svg {
    transition: transform 0.2s;
}

.btn-back:hover svg {
    transform: translateX(-3px);
}

/* ========================================
   FAQ 상세 페이지
   ======================================== */
.faq-detail-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.faq-detail-content {
    padding: var(--spacing-2xl);
}

.faq-detail-header {
    padding-bottom: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--color-gray-200);
}

.faq-detail-header .faq-category-badge {
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.faq-detail-question {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-dark);
    margin: 0;
    line-height: 1.4;
}

.faq-detail-answer {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--color-dark);
    min-height: 150px;
    word-break: break-word;
    overflow-wrap: break-word;
}

/* FAQ 상세 이미지 - 100% 너비로 가득 채움 */
.faq-detail-answer img {
    width: 100%;
    height: auto;
    display: block;
    margin: var(--spacing-lg) 0;
    border-radius: var(--border-radius-md);
}

/* ========================================
   이전/다음 FAQ 네비게이션
   ======================================== */
.faq-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
}

.faq-nav-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border-radius: var(--border-radius-lg);
    transition: var(--transition-base);
    cursor: pointer;
}

.faq-nav-item:hover {
    background: var(--color-gray-100);
}

.faq-nav-item.prev {
    align-items: flex-start;
}

.faq-nav-item.next {
    align-items: flex-end;
    text-align: right;
}

.nav-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
    text-decoration: none;
    cursor: pointer;
    transition: color 0.2s;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.nav-title:hover {
    color: var(--color-primary);
}

/* ========================================
   에러 상태
   ======================================== */
.faq-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-500);
    text-align: center;
}

.faq-error svg {
    margin-bottom: var(--spacing-lg);
    stroke: var(--color-gray-400);
}

.faq-error p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
}

.faq-error .btn {
    padding: var(--spacing-md) var(--spacing-xl);
}

/* ========================================
   반응형 - 타블렛
   ======================================== */
@media (max-width: 1024px) {
    .faq-detail-container {
        max-width: 100%;
    }
}

/* ========================================
   반응형 - 모바일
   ======================================== */
@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2rem;
    }

    .category-tabs {
        gap: var(--spacing-xs);
    }

    .category-tab {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 0.9rem;
    }

    .faq-question {
        padding: var(--spacing-lg);
    }

    .faq-question-text {
        font-size: 1rem;
    }

    .faq-answer-content {
        padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
        padding-left: var(--spacing-lg);
    }

    .faq-detail-container {
        border-radius: var(--border-radius-lg);
    }

    .faq-detail-content {
        padding: var(--spacing-lg);
    }

    .faq-detail-question {
        font-size: 1.25rem;
    }

    .faq-nav {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .faq-nav-item.next {
        align-items: flex-start;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .page-header h1 {
        font-size: 1.75rem;
    }

    .faq-category-badge {
        font-size: 0.75rem;
        padding: 3px 8px;
    }
}