/* ========== RESEARCH PAGE STYLES ========== */

/* Hero Section */
.research-hero {
    background-color: var(--sense-dark);
    padding: var(--spacing-xxl) 0;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

/* Research hero overlay for better text readability */
.research-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 26, 26, 0.5);
    z-index: 1;
}

.research-hero .hero-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 2;
}

.research-hero .hero-title {
    font-size: 3rem;
    font-weight: 500;
    color: var(--sense-bright);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.research-hero .hero-description {
    font-size: 1.25rem;
    color: var(--sense-bright);
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

/* Research Papers Section */
.research-papers-section {
    background-color: var(--sense-bright);
    padding: var(--spacing-xxl) 0;
}

.papers-tabs {
    display: flex;
    justify-content: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xxl);
    flex-wrap: wrap;
}

.papers-tabs .tab-btn {
    padding: var(--spacing-xs) 0;
    background-color: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--sense-dark-70);
    cursor: pointer;
    transition: var(--transition-base);
}

.papers-tabs .tab-btn:hover {
    color: var(--sense-purple);
}

.papers-tabs .tab-btn.active {
    color: var(--sense-dark);
    border-bottom-color: var(--sense-purple);
    font-weight: 500;
}

.papers-content {
    position: relative;
    min-height: 400px;
}

.papers-list {
    display: none;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
    animation: fadeIn 0.3s ease-in-out;
}

.papers-list.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.paper-card {
    background-color: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition-base);
}

.paper-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(102, 0, 255, 0.1);
}

.paper-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--sense-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.paper-abstract {
    font-size: 1rem;
    color: var(--sense-dark-70);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.paper-link {
    display: inline-flex;
    align-items: center;
    font-size: 1rem;
    font-weight: 500;
    color: var(--sense-purple);
    text-decoration: none;
    transition: var(--transition-base);
}

.paper-link:hover {
    color: var(--sense-turquoise);
    transform: translateX(4px);
}

/* Research Partners Section */
.research-partners-section {
    background-color: white;
    padding: var(--spacing-xxl) 0;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    align-items: stretch;
}

.partner-card {
    background-color: var(--sense-bright);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 100%;
}

.partner-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(102, 0, 255, 0.1);
}

.partner-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, rgba(102, 0, 255, 0.1) 0%, rgba(0, 255, 163, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.partner-info {
    width: 100%;
}

.partner-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--sense-dark);
    margin-bottom: var(--spacing-xs);
}

.partner-position {
    font-size: 0.95rem;
    color: var(--sense-purple);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.partner-expertise {
    margin-bottom: var(--spacing-md);
}

.expertise-heading {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--sense-dark);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.partner-expertise ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.partner-expertise ul li {
    font-size: 0.9rem;
    color: var(--sense-dark-70);
    padding-left: 1.2rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
    text-align: left;
}

.partner-expertise ul li:before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--sense-turquoise);
    font-weight: bold;
}

.partner-focus {
    font-size: 0.9rem;
    color: var(--sense-dark-70);
    line-height: 1.5;
    text-align: left;
}

.partner-focus strong {
    color: var(--sense-dark);
}

/* Patents Section */
.patents-section {
    background-color: var(--sense-bright);
    padding: var(--spacing-xxl) 0;
}

.patents-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.patent-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition-base);
}

.patent-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(102, 0, 255, 0.1);
}

.patent-number {
    display: inline-block;
    background-color: var(--sense-purple);
    color: var(--sense-bright);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.patent-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--sense-dark);
    line-height: 1.4;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--sense-dark);
    margin-bottom: var(--spacing-sm);
}

/* Responsive Design */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .research-hero .hero-title {
        font-size: 2.5rem;
    }

    .research-hero .hero-description {
        font-size: 1.1rem;
    }

    .papers-tabs {
        gap: var(--spacing-sm);
    }

    .papers-tabs .tab-btn {
        padding: var(--spacing-xs) 0;
        font-size: 0.85rem;
    }

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

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

    .section-title {
        font-size: 2rem;
    }
}

/* Mobile (max-width: 767px) */
@media (max-width: 767px) {
    .research-hero {
        min-height: 40vh;
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .research-hero .hero-title {
        font-size: 2rem;
    }

    .research-hero .hero-description {
        font-size: 1rem;
    }

    .research-papers-section,
    .research-partners-section,
    .patents-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .papers-tabs {
        gap: var(--spacing-sm);
    }

    .papers-tabs .tab-btn {
        padding: var(--spacing-xs) 0;
        font-size: 0.85rem;
    }

    .paper-card {
        padding: var(--spacing-lg);
    }

    .paper-title {
        font-size: 1.25rem;
    }

    .partners-grid {
        grid-template-columns: 1fr;
    }

    .patents-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-header {
        margin-bottom: var(--spacing-lg);
    }
}