/* research.css - Research 페이지 전용 스타일 */

/* ==================== 페이지 헤더 스타일 ==================== */
.page-header {
    text-align: center;
    padding: 25px 15px 20px;
    margin-bottom: 25px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.03);
}

.page-header h1 {
    color: #005792;
    font-size: 2.2em;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.page-header h1::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: #4facfe;
}

.page-header p {
    color: #555;
    font-size: 1em;
    max-width: 600px;
    margin: 15px auto 0;
}

/* ==================== 연구 컨테이너 ==================== */
.research-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

/* ==================== 연구 슬라이드 카드 - 중간 크기 ==================== */
.research-slide {
    background: white;
    border-radius: 16px;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.research-slide:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

/* 카드 상단에 작은 인디케이터 */
.research-slide::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #4facfe, #00b4d8);
    border-radius: 16px 16px 0 0;
    z-index: 1;
}

/* ==================== 카드 이미지 섹션 ==================== */
.card-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
    margin-top: 5px;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.research-slide:hover .card-image img {
    transform: scale(1.05);
}

/* ==================== 중간 크기 카드 헤더 ==================== */
.slide-header {
    padding: 25px 25px 20px;
    border-bottom: none;
}

/* 프로젝트 아이콘 숨김 */
.project-icon {
    display: none;
}

.project-title {
    font-size: 1.4em;
    color: #005792;
    margin-bottom: 12px;
    font-weight: 700;
    line-height: 1.3;
}

/* 카드에 간단한 설명 표시 */
.card-summary {
    padding: 0 25px 20px;
    color: #666;
    font-size: 0.95em;
    line-height: 1.6;
}

.summary-item {
    margin-bottom: 10px;
    padding-left: 18px;
    position: relative;
}

.summary-item::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #4facfe;
    font-weight: bold;
}

.project-subtitle {
    display: none; /* 카드에서는 숨김 */
}

.goals-row {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
    padding: 0 25px 20px;
}

.goal-label {
    background: #e3f2fd;
    color: #005792;
    padding: 6px 14px;
    border-radius: 16px;
    font-size: 0.8em;
    font-weight: 600;
    transition: all 0.3s ease;
}

.goal-label:hover {
    background: #4facfe;
    color: white;
}

/* ==================== 카드에서는 상세 내용 숨김 ==================== */
.research-slide .slide-content,
.research-slide .proposed-section {
    display: none;
}

/* 클릭 유도 텍스트 */
.click-hint {
    font-size: 0.85em;
    color: #999;
    padding: 0 25px 20px;
    font-style: italic;
    text-align: center;
}

/* ==================== 슬라이드 콘텐츠 (AS-IS / TO-BE) - 모달용 ==================== */
.slide-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 30px 40px;
    background: white;
}

.section-box {
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.section-box:hover {
    background-color: #f0f7ff;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.section-box.as-is {
    border-left: 3px solid #6c757d;
}

.section-box.to-be {
    border-left: 3px solid #4facfe;
}

.section-title {
    font-size: 1.2em;
    font-weight: 700;
    text-align: center;
    padding: 8px 12px;
    border-radius: 6px;
    margin-bottom: 15px;
    color: white;
}

.section-box.as-is .section-title {
    background: #6c757d;
}

.section-box.to-be .section-title {
    background: #4facfe;
}

.section-list {
    list-style: none;
    padding: 0;
}

.section-list li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    line-height: 1.5;
    font-size: 0.9em;
    border-bottom: 1px solid #e9ecef;
    color: #555;
}

.section-list li:last-child {
    border-bottom: none;
}

.section-box.as-is .section-list li::before {
    content: '▪';
    position: absolute;
    left: 0;
    font-size: 1.2em;
    font-weight: bold;
    color: #6c757d;
}

.section-box.to-be .section-list li::before {
    content: '▪';
    position: absolute;
    left: 0;
    font-size: 1.2em;
    font-weight: bold;
    color: #4facfe;
}

/* ==================== PROPOSED METHOD 섹션 ==================== */
.proposed-section {
    background: #f8f9fa;
    padding: 15px 40px 40px;
    margin-top: 0;
}

.proposed-title {
    font-size: 1.5em;
    color: #005792;
    font-weight: 700;
    text-align: center;
    margin-bottom: 25px;
    padding: 10px 15px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.03);
    position: relative;
}

.proposed-title::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 2px;
    background-color: #4facfe;
}

.proposed-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 35px;
    align-items: start;
}

.method-image {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
}

.method-image img {
    width: 100%;
    height: auto;
    display: block;
}

.method-description {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid #e9ecef;
}

.method-description ul {
    list-style: none;
    padding: 0;
    margin-bottom: 15px;
}

.method-description li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    line-height: 1.5;
    color: #555;
    border-bottom: 1px solid #e9ecef;
    font-size: 0.9em;
}

.method-description li:last-child {
    border-bottom: none;
}

.method-description li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: #4facfe;
    font-weight: bold;
    font-size: 1.1em;
}

.core-structure {
    background: #f0f7ff;
    padding: 12px;
    border-radius: 6px;
    border-left: 3px solid #4facfe;
    margin-top: 12px;
}

.core-label {
    color: #005792;
    font-weight: 600;
    margin: 4px 0;
    font-size: 0.85em;
}

.core-note {
    color: #6c757d;
    font-style: italic;
    font-size: 0.8em;
    margin: 4px 0;
}

/* ==================== 모달 스타일 ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.7);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: block;
}

.modal-content {
    background-color: white;
    margin: 2% auto;
    width: 90%;
    max-width: 1400px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s ease;
    max-height: 95vh;
    overflow-y: auto;
}

.modal-close {
    color: #999;
    float: right;
    font-size: 32px;
    font-weight: bold;
    padding: 10px 20px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal-close:hover,
.modal-close:focus {
    color: #005792;
}

/* 모달 내 연구 슬라이드 스타일 */
.modal .research-slide {
    cursor: default;
    border-radius: 0;
    box-shadow: none;
}

.modal .research-slide::before {
    height: 0;
}

.modal .research-slide:hover {
    transform: none;
    box-shadow: none;
}

/* 모달에서 카드 이미지 숨김 */
.modal .card-image {
    display: none;
}

.modal .card-summary {
    display: none;
}

.modal .project-icon {
    display: none;
}

.modal .project-title {
    font-size: 2.2em;
    text-align: center;
    margin-bottom: 15px;
}

.modal .slide-header {
    padding: 25px 40px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 모달에서 상세 정보 표시 */
.modal .slide-content,
.modal .proposed-section {
    display: grid !important;
}

.modal .project-subtitle {
    display: flex !important;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 10px;
    text-align: center;
    width: 100%;
}

.modal .click-hint {
    display: none;
}

.highlight-blue {
    color: #4facfe;
    font-weight: 600;
    font-size: 1em;
}

.highlight-red {
    color: #005792;
    font-weight: 600;
    font-size: 1em;
}

.modal .slide-content {
    padding: 20px 40px 15px;
}

.modal .proposed-section {
    padding: 10px 40px 40px;
}

.modal .section-box {
    padding: 25px;
}

.modal .goal-label {
    font-size: 0.9em;
    padding: 8px 18px;
    border-radius: 20px;
    background: #4facfe;
    color: white;
}

.modal .goals-row {
    justify-content: center;
    gap: 15px;
    padding: 15px 0;
}

/* ==================== 애니메이션 효과 ==================== */
.hidden {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* ==================== 반응형 디자인 ==================== */
@media (max-width: 1200px) {
    .research-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .proposed-content {
        grid-template-columns: 1fr;
    }
    
    .method-image {
        max-width: 700px;
        margin: 0 auto;
    }
}

@media (max-width: 992px) {
    .research-container {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .page-header h1 {
        font-size: 2em;
    }
    
    .project-title {
        font-size: 1.3em;
    }
    
    .card-image {
        height: 200px;
    }
    
    .modal-content {
        width: 95%;
        margin: 3% auto;
    }
}

@media (max-width: 768px) {
    .research-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .card-image {
        height: 180px;
    }
    .page-header {
        padding: 20px 12px 15px;
    }
    
    .page-header h1 {
        font-size: 1.8em;
    }
    
    .page-header p {
        font-size: 0.95em;
    }
    
    .slide-content {
        grid-template-columns: 1fr;
        padding: 18px 15px;
    }
    
    .slide-header {
        padding: 18px 15px;
    }
    
    .project-title {
        font-size: 1.3em;
    }
    
    .goals-row {
        flex-direction: column;
        gap: 8px;
    }
    
    .goal-label {
        text-align: center;
        font-size: 0.8em;
    }
    
    .proposed-section {
        padding: 15px;
    }
    
    .proposed-title {
        font-size: 1.3em;
    }
    
    .method-description {
        padding: 15px;
    }
    
    .research-container {
        gap: 20px;
    }
    
    .modal .slide-header {
        padding: 20px 15px;
    }
    
    .modal .slide-content {
        padding: 15px;
    }
    
    .modal .proposed-section {
        padding: 10px 15px 20px;
    }
}

@media (max-width: 576px) {
    .page-header {
        padding: 18px 10px 12px;
    }
    
    .page-header h1 {
        font-size: 1.6em;
    }
    
    .page-header p {
        font-size: 0.9em;
    }
    
    .slide-header {
        padding: 15px 12px;
    }
    
    .project-title {
        font-size: 1.2em;
    }
    
    .project-subtitle {
        font-size: 0.85em;
    }
    
    .slide-content {
        padding: 15px 12px;
    }
    
    .section-box {
        padding: 15px;
    }
    
    .section-title {
        font-size: 1.1em;
        padding: 6px 10px;
    }
    
    .section-list li {
        font-size: 0.85em;
        padding-left: 18px;
    }
    
    .proposed-section {
        padding: 15px 12px;
    }
    
    .proposed-title {
        font-size: 1.2em;
        padding: 8px 12px;
    }
    
    .method-description {
        padding: 12px;
    }
    
    .method-description li {
        font-size: 0.85em;
        padding-left: 18px;
    }
    
    .core-structure {
        padding: 10px;
    }
    
    .core-label {
        font-size: 0.8em;
    }
    
    .core-note {
        font-size: 0.75em;
    }
    
    .research-container {
        gap: 15px;
    }
    
    .modal-content {
        width: 98%;
        margin: 2% auto;
    }
    
    .modal .project-title {
        font-size: 1.4em;
    }
}

/* ==================== 접근성 개선 ==================== */
.research-slide:focus-within {
    outline: 2px solid #4facfe;
    outline-offset: 2px;
}

/* 고대비 모드 지원 */
@media (prefers-contrast: high) {
    .research-slide {
        border: 2px solid #000;
    }
    
    .section-box {
        border: 2px solid #000;
    }
}

/* 애니메이션 감소 모드 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hidden {
        transition: none;
    }
    
    .research-slide:hover {
        transform: none;
    }
    
    .modal {
        animation: none;
    }
    
    .modal-content {
        animation: none;
    }
}

/* ==================== 인쇄 스타일 ==================== */
@media print {
    .research-slide {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .page-header h1 {
        color: #000;
    }
    
    .section-title {
        color: #000;
    }
    
    .method-image {
        max-width: 100%;
    }
    
    .modal {
        display: none;
    }
}