/* Research Section Styles */
.research-section {
    padding: 120px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
    position: relative;
    overflow: hidden;
    z-index: 50;
}

.research-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(70% 70% at 50% 0%, rgba(52, 152, 219, 0.03) 0%, transparent 100%),
        radial-gradient(50% 50% at 100% 100%, rgba(44, 62, 80, 0.03) 0%, transparent 100%);
    pointer-events: none;
}

.research-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%233498db' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.research-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
}

.research-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.research-header h2 {
    font-size: 3.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 50%, #2c3e50 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 30px;
    position: relative;
    display: inline-block;
    letter-spacing: -0.5px;
}

.research-header h2::before {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px solid rgba(52, 152, 219, 0.1);
    border-radius: 50%;
    left: -80px;
    top: 50%;
    transform: translateY(-50%);
}

.research-header h2::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px solid rgba(52, 152, 219, 0.1);
    border-radius: 50%;
    right: -80px;
    top: 50%;
    transform: translateY(-50%);
}

.research-content-wrapper {
    display: flex;
    gap: 60px;
    align-items: flex-start;
    position: relative;
    z-index: 51;
}

.research-interests-column {
    width: 400px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
    z-index: 52;
}

.interests-container {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    border: 1px solid rgba(52, 152, 219, 0.1);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 52;
}

.interest-item {
    padding: 28px 35px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    cursor: pointer;
    position: relative;
    background: #ffffff;
    z-index: 53;
}

.interest-item:last-child {
    border-bottom: none;
}

.interest-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, #3498db, #2c3e50);
    transform: scaleY(0);
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.interest-item::after {
    content: '';
    position: absolute;
    right: 35px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #3498db;
    opacity: 0;
    transition: all 0.4s ease;
}

.interest-item:hover {
    background: linear-gradient(90deg, rgba(52, 152, 219, 0.03) 0%, transparent 100%);
    padding-left: 45px;
}

.interest-item:hover::before {
    transform: scaleY(1);
}

.interest-item:hover::after {
    opacity: 1;
    right: 30px;
}

.interest-item h3 {
    font-size: 1.15rem;
    color: #2c3e50;
    margin: 0;
    font-weight: 600;
    transition: all 0.4s ease;
}

.interest-item:hover h3 {
    color: #3498db;
}

.interest-item.active {
    background: linear-gradient(90deg, rgba(52, 152, 219, 0.05) 0%, transparent 100%);
    padding-left: 45px;
}

.interest-item.active::before {
    transform: scaleY(1);
}

.interest-item.active::after {
    opacity: 1;
    right: 30px;
}

.interest-item.active h3 {
    color: #3498db;
}

.research-main-content {
    flex: 1;
    min-width: 0;
    position: relative;
    z-index: 1;
}

.research-text-container {
    background: #ffffff;
    border-radius: 24px;
    padding: 50px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(52, 152, 219, 0.1);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.research-text-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, #3498db, #2c3e50);
    opacity: 0.1;
}

.research-text-container p {
    color: #4a5568;
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 30px;
    text-align: justify;
    hyphens: auto;
    letter-spacing: 0.2px;
}

.research-text-container p:last-child {
    margin-bottom: 0;
}

.research-profiles {
    margin-top: 50px;
    padding-top: 50px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    position: relative;
}

.research-profiles::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, #3498db, #2c3e50);
}

.profiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
}

.profile-link {
    display: flex;
    align-items: center;
    padding: 25px;
    background: #ffffff;
    border-radius: 16px;
    text-decoration: none;
    color: #2c3e50;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    border: 1px solid rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.profile-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.1) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.profile-link i {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 12px;
    margin-right: 20px;
    font-size: 1.3rem;
    color: #3498db;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
}

.profile-link span {
    font-weight: 500;
    font-size: 1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: all 0.4s ease;
}

.profile-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(52, 152, 219, 0.15);
    border-color: #3498db;
}

.profile-link:hover::before {
    opacity: 1;
}

.profile-link:hover i {
    background: #3498db;
    color: #ffffff;
    transform: scale(1.1);
}

.profile-link:hover span {
    color: #3498db;
}

/* Premium Responsive Design */
@media (max-width: 1400px) {
    .research-container {
        padding: 0 30px;
    }
    
    .research-header h2::before,
    .research-header h2::after {
        width: 50px;
        height: 50px;
    }
    
    .research-header h2::before {
        left: -70px;
    }
    
    .research-header h2::after {
        right: -70px;
    }
}

@media (max-width: 1200px) {
    .research-content-wrapper {
        gap: 40px;
    }

    .research-interests-column {
        width: 350px;
    }
    
    .research-header h2 {
        font-size: 2.8rem;
    }
}

@media (max-width: 991px) {
    .research-content-wrapper {
        flex-direction: column;
    }

    .research-interests-column {
        width: 100%;
        position: static;
    }

    .interests-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .interest-item {
        border-right: 1px solid rgba(0, 0, 0, 0.05);
    }

    .interest-item:nth-child(2n) {
        border-right: none;
    }
    
    .research-header h2::before,
    .research-header h2::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .research-section {
        padding: 80px 0;
    }

    .research-container {
        padding: 0 20px;
    }

    .research-header {
        margin-bottom: 50px;
    }

    .research-header h2 {
        font-size: 2.4rem;
    }

    .interests-container {
        grid-template-columns: 1fr;
    }

    .interest-item {
        border-right: none;
        padding: 22px 30px;
    }

    .research-text-container {
        padding: 35px;
    }

    .research-text-container p {
        font-size: 1rem;
        line-height: 1.8;
    }

    .profiles-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-link {
        padding: 20px;
    }
    
    .profile-link i {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        margin-right: 15px;
    }
}

@media (max-width: 480px) {
    .research-header h2 {
        font-size: 2rem;
    }

    .research-text-container {
        padding: 30px;
    }
} 