/* 부드러운 애니메이션 효과 CSS - 강화 버전 */

/* PDF 뷰어 모달 애니메이션 */
.pdf-modal {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.pdf-modal:not(.hidden) {
    animation: modalFadeIn 0.4s ease-out;
}

.pdf-modal-overlay {
    transition: opacity 0.4s ease-in-out !important;
    background: rgba(0, 0, 0, 0.7) !important;
}

.pdf-modal-content {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    transform: scale(0.9) translateY(20px);
    opacity: 0;
}

.pdf-modal:not(.hidden) .pdf-modal-content {
    transform: scale(1) translateY(0);
    opacity: 1;
    animation: contentSlideIn 0.4s ease-out;
}

/* PDF 캔버스 확대/축소 애니메이션 */
#pdf-canvas {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    transform-origin: center center;
}

/* 확대/축소 버튼 애니메이션 */
.pdf-zoom-controls button {
    transition: all 0.2s ease-in-out !important;
    transform: scale(1);
}

.pdf-zoom-controls button:hover {
    transform: scale(1.1) !important;
    background-color: rgba(59, 130, 246, 0.1) !important;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2) !important;
}

.pdf-zoom-controls button:active {
    transform: scale(0.95) !important;
    transition: transform 0.1s ease-in-out !important;
}

/* 페이지 전환 애니메이션 */
.pdf-nav-controls button {
    transition: all 0.2s ease-in-out !important;
}

.pdf-nav-controls button:hover:not(:disabled) {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
}

.pdf-nav-controls button:active:not(:disabled) {
    transform: translateY(0) !important;
}

/* 툴바 애니메이션 */
.pdf-toolbar {
    transition: all 0.3s ease-in-out !important;
    transform: translateY(-10px);
    opacity: 0;
}

.pdf-modal:not(.hidden) .pdf-toolbar {
    transform: translateY(0);
    opacity: 1;
    animation: toolbarSlideDown 0.3s ease-out 0.2s both;
}

/* 로딩 애니메이션 */
#pdf-loading {
    transition: opacity 0.3s ease-in-out !important;
}

/* 다운로드 버튼 애니메이션 */
.download-datasheet-btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative;
    overflow: hidden;
}

.download-datasheet-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
}

.download-datasheet-btn:active {
    transform: translateY(0) !important;
    transition: transform 0.1s ease-in-out !important;
}

/* 리플 효과 */
.download-datasheet-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.download-datasheet-btn:active::before {
    width: 300px;
    height: 300px;
}

/* 키프레임 애니메이션 */
@keyframes modalFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(4px);
    }
}

@keyframes contentSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(30px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes toolbarSlideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 부드러운 스크롤 */
.pdf-container {
    scroll-behavior: smooth !important;
}

/* 드롭다운 애니메이션 개선 */
.datasheet-dropdown-menu {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    transform: translateY(-15px) scale(0.95);
    opacity: 0;
    visibility: hidden;
}

.datasheet-dropdown.active .datasheet-dropdown-menu {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
    animation: dropdownSlideIn 0.3s ease-out;
}

.datasheet-dropdown-item {
    transition: all 0.2s ease-in-out !important;
}

.datasheet-dropdown-item:hover {
    transform: translateX(8px) !important;
    background-color: rgba(59, 130, 246, 0.08) !important;
    padding-left: 20px !important;
}

@keyframes dropdownSlideIn {
    from {
        opacity: 0;
        transform: translateY(-15px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 줌 레벨 표시 애니메이션 */
#zoom-level {
    transition: all 0.2s ease-in-out !important;
}

/* 페이지 번호 애니메이션 */
#page-num, #page-count {
    transition: all 0.2s ease-in-out !important;
}

/* 모바일 최적화 */
@media (max-width: 768px) {
    .pdf-modal-content {
        transition-duration: 0.3s !important;
    }
    
    .pdf-toolbar {
        transition-duration: 0.2s !important;
    }
}

/* 접근성 - 애니메이션 비활성화 옵션 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}