/* PDF 뷰어 페이지 스타일 */

.pdf-viewer-container {
    width: 100%;
    min-height: 80vh;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    background-color: var(--color-bg-secondary, #f5f5f5);
    -webkit-border-radius: var(--border-radius, 8px);
    -moz-border-radius: var(--border-radius, 8px);
    border-radius: var(--border-radius, 8px);
    overflow: hidden;
    position: relative;
}

#pdf-viewer-wrapper {
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: flex-start;
    -ms-flex-align: flex-start;
    align-items: flex-start;
    padding: var(--spacing-lg, 2rem);
    overflow: auto;
    background-color: #525252;
    min-height: 600px;
    position: relative;
}

/* 좌우 네비게이션 버튼 */
.pdf-nav-btn {
    position: absolute;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background-color: rgba(0, 0, 0, 0.6);
    color: #fff;
    border: none;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    cursor: pointer;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    -webkit-transition: opacity var(--transition-base, 0.3s), background-color var(--transition-base, 0.2s);
    -moz-transition: opacity var(--transition-base, 0.3s), background-color var(--transition-base, 0.2s);
    -o-transition: opacity var(--transition-base, 0.3s), background-color var(--transition-base, 0.2s);
    transition: opacity var(--transition-base, 0.3s), background-color var(--transition-base, 0.2s);
    pointer-events: none;
}

.pdf-nav-btn:hover:not(:disabled) {
    background-color: rgba(0, 0, 0, 0.8);
}

.pdf-nav-btn:disabled {
    opacity: 0;
    cursor: not-allowed;
}

.pdf-nav-left {
    left: 1rem;
}

.pdf-nav-right {
    right: 1rem;
}

/* PC 레이아웃: 호버 시 버튼 표시 */
@media (min-width: 769px) {
    #pdf-viewer-wrapper:hover .pdf-nav-btn:not(:disabled) {
        opacity: 1;
        pointer-events: auto;
    }
}

/* 모바일 레이아웃: 버튼 숨김 (터치 이벤트로 작동) */
@media (max-width: 768px) {
    .pdf-nav-btn {
        display: none;
    }
}

#pdf-canvas-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 10px;
    flex-wrap: nowrap; /* 2페이지 모드에서 줄바꿈 방지 */
}

#pdf-canvas-1,
#pdf-canvas-2 {
    max-width: 100%;
    height: auto;
    -webkit-box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    background-color: #fff;
    display: block;
}

/* 전체 화면 모드 */
.pdf-viewer-container:-webkit-full-screen {
    background-color: #000;
}

.pdf-viewer-container:-moz-full-screen {
    background-color: #000;
}

.pdf-viewer-container:-ms-fullscreen {
    background-color: #000;
}

.pdf-viewer-container:fullscreen {
    background-color: #000;
}

.pdf-viewer-container:-webkit-full-screen #pdf-viewer-wrapper,
.pdf-viewer-container:-moz-full-screen #pdf-viewer-wrapper,
.pdf-viewer-container:-ms-fullscreen #pdf-viewer-wrapper,
.pdf-viewer-container:fullscreen #pdf-viewer-wrapper {
    background-color: #000;
    min-height: 100vh;
    padding: 1rem;
}

.pdf-viewer-container:-webkit-full-screen .pdf-controls,
.pdf-viewer-container:-moz-full-screen .pdf-controls,
.pdf-viewer-container:-ms-fullscreen .pdf-controls,
.pdf-viewer-container:fullscreen .pdf-controls {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

/* 로딩 인디케이터 */
.pdf-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    min-height: 400px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border, #e0e0e0);
    border-top-color: var(--color-theme, #0066cc);
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    -webkit-animation: spin 1s linear infinite;
    -moz-animation: spin 1s linear infinite;
    -o-animation: spin 1s linear infinite;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

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

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

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

.pdf-loading p {
    color: var(--color-text-light, #666);
    font-size: 1rem;
}

/* 에러 메시지 */
.pdf-error {
    text-align: center;
    padding: 4rem 2rem;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.pdf-error p {
    color: var(--color-text-light, #666);
    font-size: 1.1rem;
}

/* PDF 컨트롤 */
.pdf-controls {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--color-bg, #fff);
    border-top: 1px solid var(--color-border, #e0e0e0);
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.pdf-control-btn {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--color-bg-secondary, #f5f5f5);
    border: 1px solid var(--color-border, #e0e0e0);
    -webkit-border-radius: var(--border-radius, 4px);
    -moz-border-radius: var(--border-radius, 4px);
    border-radius: var(--border-radius, 4px);
    cursor: pointer;
    -webkit-transition: all var(--transition-base, 0.2s);
    -moz-transition: all var(--transition-base, 0.2s);
    -o-transition: all var(--transition-base, 0.2s);
    transition: all var(--transition-base, 0.2s);
    font-size: 0.9rem;
    color: var(--color-text, #333);
}

.pdf-control-btn:hover:not(:disabled) {
    background-color: var(--color-theme, #0066cc);
    color: #fff;
    border-color: var(--color-theme, #0066cc);
}

.pdf-control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pdf-control-btn.active {
    background-color: var(--color-theme, #0066cc);
    color: #fff;
    border-color: var(--color-theme, #0066cc);
}

.pdf-control-btn .material-symbols-outlined {
    font-size: 1.2rem;
}


.pdf-page-info-group {
    position: relative;
    display: flex;
    align-items: center;
}

.pdf-page-input-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    color: var(--color-text, #333);
    font-weight: 500;
    min-width: 80px;
    text-align: center;
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: var(--border-radius, 4px);
    cursor: pointer;
    transition: all var(--transition-base, 0.2s);
}

.pdf-page-input-btn:hover {
    background-color: var(--color-bg-secondary, #f5f5f5);
    border-color: var(--color-border, #e0e0e0);
}

.pdf-page-input-wrapper {
    position: absolute;
    top: -200%;
    left: 50%;
    -webkit-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    transform: translateX(-50%);
    margin-top: 0.5rem;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--color-bg, #fff);
    padding: 0.5rem;
    -webkit-border-radius: var(--border-radius, 4px);
    -moz-border-radius: var(--border-radius, 4px);
    border-radius: var(--border-radius, 4px);
    -webkit-box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 100;
}

.pdf-page-input {
    width: 60px;
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--color-border, #e0e0e0);
    -webkit-border-radius: var(--border-radius, 4px);
    -moz-border-radius: var(--border-radius, 4px);
    border-radius: var(--border-radius, 4px);
    font-size: 0.9rem;
    text-align: center;
}

.pdf-page-input:focus {
    outline: none;
    border-color: var(--color-theme, #0066cc);
}

.pdf-page-go-btn {
    padding: 0.4rem 0.6rem;
    background-color: var(--color-theme, #0066cc);
    color: #fff;
    border: none;
    -webkit-border-radius: var(--border-radius, 4px);
    -moz-border-radius: var(--border-radius, 4px);
    border-radius: var(--border-radius, 4px);
    cursor: pointer;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-transition: all var(--transition-base, 0.2s);
    -moz-transition: all var(--transition-base, 0.2s);
    -o-transition: all var(--transition-base, 0.2s);
    transition: all var(--transition-base, 0.2s);
}

.pdf-page-go-btn:hover {
    background-color: var(--color-theme-dark, #0052a3);
}

.pdf-page-go-btn .material-symbols-outlined {
    font-size: 1rem;
}

.pdf-control-divider {
    width: 1px;
    height: 24px;
    background-color: var(--color-border, #e0e0e0);
    margin: 0 0.5rem;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    #pdf-viewer-wrapper {
        padding: var(--spacing-md, 1rem);
        min-height: 400px;
    }
    
    .pdf-controls {
        gap: 0.5rem;
        padding: 0.75rem;
    }
    
    .pdf-control-btn {
        padding: 0.4rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .control-text {
        display: none;
    }
    
    .pdf-page-input-btn {
        font-size: 0.85rem;
        min-width: 60px;
        padding: 0.4rem 0.75rem;
    }
    
    .pdf-control-divider {
        display: none;
    }
    
    /* 모바일에서는 2페이지 모드 비활성화 - 항상 단일 페이지 */
    #pdf-canvas-container {
        flex-direction: column !important;
        width: 100%;
    }
    
    #pdf-canvas-1,
    #pdf-canvas-2 {
        width: 100% !important;
        max-width: 100%;
        height: auto !important;
    }
    
    /* 모바일에서 스크롤만 허용 */
    #pdf-viewer-wrapper {
        -ms-touch-action: pan-x pan-y;
        touch-action: pan-x pan-y;
        overflow: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    #pdf-canvas-1,
    #pdf-canvas-2 {
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
        pointer-events: auto;
    }
    
    /* 모바일에서 2페이지 보기 버튼 숨기기 */
    #pdf-two-pages {
        display: none !important;
    }
    
    /* 모바일에서 Fit width/height 버튼 숨기기 */
    #pdf-fit-width,
    #pdf-fit-height {
        display: none !important;
    }
}

/* 작은 화면 대응 */
@media (max-width: 480px) {
    .pdf-controls {
        gap: 0.25rem;
        padding: 0.5rem;
    }
    
    .pdf-control-btn {
        padding: 0.35rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .pdf-control-btn .material-symbols-outlined {
        font-size: 1rem;
    }
}