/* ===================================
   CSS Reset & Base Styles
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-color);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ===================================
   Navigation
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition-medium);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width var(--transition-medium);
}

.nav-link:hover,
.nav-link.active {
    color: var(--secondary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: all var(--transition-medium);
    border-radius: 3px;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    color: var(--text-color);
    position: relative;
    padding: 120px 20px 80px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 60px;
    animation: fadeInUp 1s ease;
}

.hero-profile {
    flex-shrink: 0;
}

.hero-image {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.3);
    transition: transform var(--transition-medium);
}

.hero-image:hover {
    transform: scale(1.05);
}

.hero-text {
    flex: 1;
    text-align: left;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 10px;
    opacity: 0.95;
}

.hero-affiliation {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 25px;
    opacity: 0.95;
    line-height: 1.6;
}

.hero-bio {
    margin-bottom: 30px;
    font-size: 1.05rem;
    line-height: 1.8;
    opacity: 0.95;
    max-width: 850px;
}

.hero-bio a {
    color: var(--secondary-color);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    transition: opacity var(--transition-fast);
}

.hero-bio a:hover {
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    align-items: center;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: all var(--transition-medium);
    opacity: 0.8;
}

.social-link:hover {
    opacity: 1;
    transform: translateY(-3px);
}

.social-link svg {
    width: 32px;
    height: 32px;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-medium);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 20px;
    height: 30px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    animation: scrollDown 2s infinite;
}

/* ===================================
   Sections
   =================================== */

.section {
    padding: var(--section-padding);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* ===================================
   About Section
   =================================== */

.about-section {
    background: var(--bg-white);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    animation: fadeIn 1s ease;
}

.lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    color: var(--text-light);
}

.about-links {
    display: flex;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.about-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--bg-light);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all var(--transition-medium);
}

.about-link:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

/* ===================================
   Research Section
   =================================== */

.research-section {
    background: var(--bg-light);
}

.research-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.research-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-medium);
    text-align: center;
}

.research-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.research-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    color: white;
}

.research-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.research-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ===================================
   Publications Section
   =================================== */

.publications-section {
    background: var(--bg-white);
}

.publications-list {
    max-width: 900px;
    margin: 0 auto;
}

.publication-item {
    margin-bottom: 50px;
}

.publication-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.publication-entry {
    padding: 25px;
    background: var(--bg-light);
    border-radius: 8px;
    margin-bottom: 20px;
    transition: all var(--transition-medium);
}

.publication-entry:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transform: translateX(5px);
}

.publication-text {
    margin-bottom: 15px;
    line-height: 1.8;
}

.publication-authors {
    font-weight: 600;
    color: var(--primary-color);
    margin-right: 10px;
}

.publication-paper-title {
    font-style: italic;
    color: var(--text-color);
    margin-right: 10px;
    text-decoration: none;
    transition: color var(--transition-fast);
}

a.publication-paper-title:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.course-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.publication-links {
    margin-top: 12px;
    display: flex;
    gap: 10px;
}

.pub-link-btn {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-light);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.pub-link-btn:hover {
    background: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}

.publication-abstract a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.publication-abstract a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

.publication-status {
    display: inline-block;
    padding: 4px 12px;
    background: var(--secondary-color);
    color: white;
    font-size: 0.85rem;
    border-radius: 12px;
    font-weight: 500;
}

.publication-abstract {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===================================
   Awards Section
   =================================== */

.awards-content {
    max-width: 900px;
    margin: 0 auto;
}

.award-category {
    margin-bottom: 40px;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all var(--transition-medium);
}

.award-category:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.award-year {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

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

.award-list li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-light);
    line-height: 1.7;
}

.award-list li::before {
    content: '•';
    position: absolute;
    left: 10px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    line-height: 1.2;
}

/* ===================================
   Contact Section
   =================================== */

.contact-section {
    background: var(--bg-light);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.contact-item {
    display: flex;
    gap: 25px;
    padding: 30px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-medium);
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    color: white;
    flex-shrink: 0;
}

.contact-item h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.contact-item a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--accent-color);
}

.contact-item p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 30px 20px;
}

.footer p {
    opacity: 0.9;
}

/* ===================================
   Animations
   =================================== */

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

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scrollDown {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(15px);
    }
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: left var(--transition-medium);
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        padding: 15px;
        display: block;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero-content {
        flex-direction: column;
        gap: 40px;
        text-align: center;
    }

    .hero-text {
        text-align: center;
    }

    .hero-image {
        width: 220px;
        height: 220px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-affiliation {
        font-size: 1rem;
    }

    .hero-bio {
        font-size: 1rem;
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
        gap: 15px;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }

    .research-areas {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
    }

    .contact-icon {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .hero-image {
        width: 180px;
        height: 180px;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-bio {
        font-size: 0.95rem;
    }

    .nav-brand {
        font-size: 1.2rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
}

/* ===================================
   Politics at Work Page Styles
   =================================== */

.paw-hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    background: white;
    color: var(--text-color);
    text-align: left;
    padding: 120px 20px 80px;
}

.paw-hero .section-title {
    text-align: center;
    margin-bottom: 40px;
}

.paw-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    letter-spacing: -1px;
}

.paw-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    max-width: 800px;
    margin: 0 0 20px;
    line-height: 1.8;
    opacity: 0.95;
}

.paw-hero-cta {
    margin-top: 40px;
    text-align: center;
}

.paw-main-btn {
    display: inline-flex;
    align-items: center;
    padding: 20px 50px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.2rem;
    transition: all var(--transition-medium);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.paw-main-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.3);
}

.paw-stats-section {
    background: var(--bg-white);
    padding: 60px 0;
}

.paw-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.paw-stat-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all var(--transition-medium);
}

.paw-stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.paw-stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.paw-stat-label {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
}

.paw-content {
    max-width: 800px;
    margin: 0 auto;
}

.paw-content p {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-light);
}

.paw-compact-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.paw-compact-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.paw-compact-content > p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 30px;
}

.paw-team-compact {
    margin: 30px 0;
    padding: 25px;
    background: var(--bg-light);
    border-radius: 12px;
}

.paw-team-compact p {
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.7;
}

.paw-links-compact {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
    flex-wrap: wrap;
}

.paw-link-btn {
    display: inline-block;
    padding: 15px 35px;
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all var(--transition-medium);
}

.paw-link-btn:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.3);
}

.paw-team {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 900px;
    margin: 0 auto 40px;
}

.team-member {
    text-align: center;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all var(--transition-medium);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.team-member h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.team-member p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 15px;
}

.team-member a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.team-member a:hover {
    color: var(--accent-color);
}

.paw-support {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 12px;
}

.paw-support p {
    color: var(--text-light);
    line-height: 1.8;
}

.paw-access-section {
    background: var(--bg-light);
}

.paw-access-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.paw-access-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-medium);
    text-align: center;
}

.paw-access-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.paw-access-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    color: white;
}

.paw-access-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.paw-access-card p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 25px;
}

.paw-btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-medium);
}

.paw-btn:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

/* ===================================
   Utility Classes
   =================================== */

.fade-in {
    animation: fadeIn 1s ease;
}

.fade-in-up {
    animation: fadeInUp 1s ease;
}