/* =====================
   Home Page
   ===================== */
.home-page {
    width: 100%;
}

/* Hero Section */
.hero {
    position: relative;
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 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='%23ffffff' fill-opacity='0.05'%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: 0.3;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--space-sm);
    color: white;
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-top: 0;
    margin-bottom: var(--space-lg);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
}

.hero-text {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.hero .btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.hero .btn-primary {
    background-color: var(--color-secondary);
    color: white;
    border: 2px solid var(--color-secondary);
}

.hero .btn-primary:hover {
    background-color: transparent;
    color: white;
}

.hero .btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.hero .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Home Sections */
.home-section {
    padding: var(--space-xl) 0;
}

.section-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.section-content h2 {
    position: relative;
    padding-bottom: var(--space-sm);
    margin-top: 0;
}

.section-content h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--color-secondary);
}

.research-areas {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

.research-area {
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 3px solid var(--color-primary);
}

.research-area:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-secondary);
}

.research-area h3 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.research-area p {
    margin-bottom: 0;
    color: var(--color-gray-700);
}

/* Latest Publications Section */
.latest-publications {
    background-color: var(--color-gray-100);
}

.publication-highlight {
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border-left: 3px solid var(--color-secondary);
    margin-top: var(--space-md);
}

.publication-highlight h3 {
    margin-top: 0;
    color: var(--color-primary);
}

.publication-highlight .authors {
    color: var(--color-gray-700);
    font-style: italic;
    margin-bottom: var(--space-sm);
}

.publication-highlight .journal {
    color: var(--color-gray-600);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.publication-highlight .abstract-preview {
    color: var(--color-gray-700);
    line-height: 1.6;
}

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

    .hero-subtitle {
        font-size: 1.4rem;
    }

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

    .hero-buttons {
        flex-direction: column;
        gap: var(--space-sm);
        align-items: center;
    }

    .hero .btn {
        width: 80%;
    }
}

/* =====================
   About Page
   ===================== */
.about-page {
    padding: var(--space-xl) 0;
}

.about-header h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

.about-header h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--color-secondary);
}

.profile-section {
    display: flex;
    margin-bottom: var(--space-xl);
    gap: 2rem;
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    width: 100%;
}

.profile-image {
    flex: 0 0 200px;
}

.placeholder-image {
    width: 200px;
    height: 200px;
    background-color: var(--color-primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    transition: all var(--transition-normal);
}

.placeholder-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.profile-details {
    flex: 1;
}

.profile-details h2 {
    margin-top: 0;
    font-size: 2rem;
    color: var(--color-primary);
}

.profile-details .title {
    font-size: 1.2rem;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.profile-details .university,
.profile-details .department {
    color: var(--color-gray-600);
    margin: 0.25rem 0;
}

.about-page .social-links {
    margin-top: var(--space-md);
    display: flex;
    gap: var(--space-sm);
}

.about-page .social-links a {
    display: inline-block;
    text-decoration: none;
    color: var(--color-primary);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.about-page .social-links a:hover {
    background-color: var(--color-primary);
    color: white;
}

.bio-section,
.research-section,
.education-section {
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
    width: 100%;
}

.bio-section h3,
.research-section h3,
.education-section h3 {
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

.bio-section h3::after,
.research-section h3::after,
.education-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--color-secondary);
}

.bio-section p {
    line-height: 1.8;
    margin-bottom: var(--space-md);
    color: var(--color-gray-700);
}

.research-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.research-tag {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.research-tag:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

/* Timeline */
.timeline {
    position: relative;
    margin-top: var(--space-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 15px;
    width: 2px;
    background-color: var(--color-gray-300);
}

.timeline-item {
    position: relative;
    padding-left: 45px;
    margin-bottom: var(--space-lg);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 4px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    transition: all var(--transition-fast);
}

.timeline-marker::before {
    content: '';
    width: 16px;
    height: 16px;
    background-color: white;
    border-radius: 50%;
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.1);
    box-shadow: var(--shadow-sm);
}

.timeline-content h4 {
    margin-top: 0;
    margin-bottom: var(--space-xs);
    color: var(--color-primary);
    font-size: 1.2rem;
}

.timeline-content .institution {
    color: var(--color-gray-600);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.timeline-content .years {
    color: var(--color-secondary);
    font-style: italic;
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
    font-weight: 500;
}

.timeline-content .description {
    color: var(--color-gray-700);
}

.about-page .container {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 1200px;
}

@media (max-width: 768px) {
    .about-page {
        padding: var(--space-lg) var(--space-md);
    }

    .profile-section {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--space-md);
    }

    .placeholder-image {
        margin: 0 auto;
    }

    .about-page .social-links {
        justify-content: center;
        flex-wrap: wrap;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        padding-left: 50px;
    }
}

/* =====================
   Publications Page
   ===================== */
.publications-page {
    padding: var(--space-xl) 0;
}

.publications-page h1 {
    margin-bottom: var(--space-lg);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

.publications-page h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--color-secondary);
}

.search-container {
    margin-bottom: var(--space-xl);
    max-width: 100%;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-family: var(--font-body);
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(26, 54, 93, 0.1);
}

.publications-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.no-results {
    text-align: center;
    padding: var(--space-xl);
    background-color: var(--color-gray-100);
    border-radius: var(--border-radius-md);
}

@media (max-width: 768px) {
    .publications-page {
        padding: var(--space-lg) var(--space-md);
    }
}

/* =====================
   Talks Page
   ===================== */
.talks-page {
    padding: var(--space-xl) 0;
}

.talks-page h1 {
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

.talks-page h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--color-secondary);
}

.page-description {
    color: var(--color-gray-600);
    font-size: 1.1rem;
    margin-bottom: var(--space-xl);
    max-width: 800px;
}

.talks-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xxl);
}

.talk-card {
    display: flex;
    background-color: white;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.talk-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.talk-date {
    background-color: var(--color-primary);
    color: white;
    padding: var(--space-md);
    width: 140px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-align: center;
    line-height: 1.4;
}

.talk-content {
    padding: var(--space-lg);
    flex: 1;
}

.talk-content h3 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.talk-event {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.event-name {
    font-weight: 600;
    color: var(--color-gray-700);
}

.event-location {
    color: var(--color-gray-600);
    padding-left: var(--space-md);
    border-left: 2px solid var(--color-gray-300);
}

.talk-description {
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.talk-links {
    display: flex;
    gap: var(--space-md);
}

.talk-link {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-gray-100);
    color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.talk-link:hover {
    background-color: var(--color-primary);
    color: white;
}

/* Upcoming talks */
.upcoming-talks {
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border-left: 3px solid var(--color-secondary);
    margin-top: var(--space-xl);
}

.upcoming-talks h2 {
    margin-top: 0;
    margin-bottom: var(--space-lg);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

.upcoming-talks h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--color-secondary);
}

.upcoming-talk h3 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.upcoming-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.upcoming-event {
    font-weight: 600;
    color: var(--color-secondary);
}

.upcoming-date,
.upcoming-location {
    color: var(--color-gray-600);
}

.upcoming-description {
    color: var(--color-gray-700);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .talks-page {
        padding: var(--space-lg) var(--space-md);
    }

    .talk-card {
        flex-direction: column;
    }

    .talk-date {
        width: 100%;
        padding: var(--space-sm);
    }

    .talk-event {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .event-location {
        padding-left: 0;
        border-left: none;
    }

    .upcoming-details {
        flex-direction: column;
        gap: var(--space-xs);
    }
}

/* =====================
   Awards Page
   ===================== */
.awards-page {
    padding: var(--space-xl) 0;
}

.awards-page h1 {
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

.awards-page h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--color-secondary);
}

.awards-timeline {
    position: relative;
    margin-bottom: var(--space-xl);
}

.awards-year-group {
    display: flex;
    margin-bottom: var(--space-xl);
}

.awards-year-group:last-child {
    margin-bottom: 0;
}

.year-marker {
    flex: 0 0 120px;
    position: relative;
}

.year-marker span {
    display: inline-block;
    background-color: var(--color-secondary);
    color: white;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1.2rem;
    position: relative;
}

.year-marker span::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -20px;
    width: 20px;
    height: 2px;
    background-color: var(--color-secondary);
    transform: translateY(-50%);
}

.year-awards {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.award-card {
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 3px solid var(--color-primary);
}

.award-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-secondary);
}

.award-card h3 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.award-organization {
    color: var(--color-gray-600);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.award-description {
    color: var(--color-gray-700);
    line-height: 1.6;
}

/* Other recognition */
.other-recognition {
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.other-recognition h2 {
    margin-top: 0;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

.other-recognition h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--color-secondary);
}

.recognition-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.recognition-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--color-gray-700);
}

.recognition-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-secondary);
}

@media (max-width: 768px) {
    .awards-page {
        padding: var(--space-lg) var(--space-md);
    }

    .awards-year-group {
        flex-direction: column;
    }

    .year-marker {
        margin-bottom: var(--space-md);
    }

    .year-marker span::after {
        display: none;
    }
}

/* =====================
   Contact Page
   ===================== */
.contact-page {
    padding: var(--space-xl) 0;
}

.contact-page h1 {
    margin-bottom: var(--space-xl);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

.contact-page h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--color-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.contact-card {
    background-color: white;
    padding: var(--space-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.contact-card h3 {
    color: var(--color-primary);
    margin-top: 0;
    margin-bottom: var(--space-md);
}

.contact-details {
    margin-top: var(--space-lg);
}

.contact-item {
    margin-bottom: var(--space-md);
    display: flex;
    flex-direction: column;
}

.contact-item strong {
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.contact-item span {
    color: var(--color-gray-700);
}

.contact-page .social-links {
    margin-top: var(--space-lg);
    display: flex;
    gap: var(--space-md);
}

.contact-page .social-links a {
    color: var(--color-primary);
    text-decoration: none;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.contact-page .social-links a:hover {
    background-color: var(--color-primary);
    color: white;
}

.contact-info-container {
    background-color: white;
    padding: var(--space-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.contact-info-container h3 {
    color: var(--color-primary);
    margin-top: 0;
    margin-bottom: var(--space-md);
}

.contact-info-container p {
    color: var(--color-gray-700);
    margin-bottom: var(--space-lg);
}

.email-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: 1.1rem;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.email-button:hover {
    background-color: var(--color-primary-light);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-page {
        padding: var(--space-lg) var(--space-md);
    }
}