/* Modern Resume Website Styles */

:root {
    --primary-color: #8e6f3e;
    --secondary-color: #000000;
    --accent-color: #daaa00;
    --gold-field: #ddb945;
    --gold-dust: #ebd99f;
    --steel: #555960;
    --cool-gray: #6f727b;
    --railway-gray: #9d9795;
    --steam: #c4bfc0;
    --text-primary: #000000;
    --text-secondary: #555960;
    --text-light: #6f727b;
    --background: #ffffff;
    --background-alt: #f8fafc;
    --border-color: #c4bfc0;
    --success-color: #8e6f3e;
    --warning-color: #daaa00;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    overflow-x: hidden;
    padding-top: 60px;
}

/* Header Styles */
header {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
    padding: 6rem 2rem 2rem;
    margin-top: -60px;
    z-index: 10;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    z-index: -1;
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    opacity: 0.95;
}

.subtitle-secondary {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    font-weight: 500;
}

.contact-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Navigation */
nav {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.5rem 0;
    position: fixed;
    width: 100%;
    left: 0;
    height: 60px;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
}

.nav-links {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a.active {
    color: var(--primary-color);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    border-radius: 1px;
}

/* Hamburger Menu */
.hamburger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 110;
    position: absolute;
    left: 1rem;
}

.bar {
    display: block;
    width: 24px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-home-icon {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    position: absolute;
    right: 1rem;
    color: var(--text-primary);
    font-size: 1.2rem;
    text-decoration: none;
}

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 20;
}

.content-section {
    margin-bottom: 2rem;
    scroll-margin-top: 80px;
}

.content-section h2 {
    font-size: 2.25rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.content-section h2 i {
    color: var(--primary-color);
    font-size: 2rem;
}

/* Education Section */
.education-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.education-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.education-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.location {
    color: var(--text-secondary);
    font-weight: 500;
}

.degree {
    margin-bottom: 0.75rem;
}

.degree strong {
    display: block;
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.minor {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.graduation {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-color), var(--gold-field));
    color: var(--secondary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.skill-category {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.skill-category:hover {
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.skill-category h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.skill-category h3 i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.skill-tag {
    background: var(--background-alt);
    color: var(--text-secondary);
    padding: 0.375rem 0.625rem;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    line-height: 1.2;
}

.skill-tag.primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 1.5rem;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 3px solid var(--background);
    box-shadow: 0 0 0 3px var(--primary-color);
}

.timeline-content {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.5rem;
}

.job-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.job-period {
    background: var(--background-alt);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
}

.job-subtitle-period {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 1rem;
}

.job-subtitle {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    margin-bottom: 0;
    flex: 1;
}

.job-responsibilities {
    list-style: none;
    padding: 0;
}

.job-responsibilities li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.job-responsibilities li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Collapsible Experience Cards */
.collapsible-header {
    position: relative;
    transition: var(--transition);
    display: block;
    width: 100%;
    cursor: pointer;
}

.collapsible-header .job-header {
    position: relative;
    padding-right: 50px; /* Space for chevron button */
    cursor: pointer;
}

.collapsible-header .job-header h3 {
    margin-right: 1rem;
    cursor: pointer;
}

.collapsible-header .job-period {
    cursor: pointer;
}

.collapse-btn {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 12px; /* Squircle shape */
    transition: var(--transition);
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    pointer-events: auto;
}

.collapse-btn:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.collapse-btn:hover i {
    color: white;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

.collapse-btn:active {
    transform: translateY(-50%) scale(0.95);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.4);
}

.collapsible-header:active {
    background-color: rgba(248, 250, 252, 0.5);
}

.collapse-btn i {
    transition: all 0.3s ease;
}

.job-details {
    overflow: hidden;
    transition: all 0.3s ease;
}

/* Only hide responsibilities and links when collapsed */
.timeline-content.collapsed .job-responsibilities,
.timeline-content.collapsed .experience-links {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    margin-bottom: 0;
    overflow: hidden;
}

.timeline-content.collapsed .collapse-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
    animation: pulse-glow 2s infinite;
}

.timeline-content.collapsed .collapse-btn i {
    transform: rotate(180deg);
    color: white;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

/* Mobile-first approach: collapsed by default on mobile */
@media (max-width: 768px) {
    .timeline-content .job-responsibilities,
    .timeline-content .experience-links {
        max-height: 0;
        opacity: 0;
        margin-top: 0;
        margin-bottom: 0;
        overflow: hidden;
    }
    
    .timeline-content.expanded .job-responsibilities,
    .timeline-content.expanded .experience-links {
        max-height: 2000px;
        opacity: 1;
        margin-top: 0.5rem;
        margin-bottom: 0;
    }
    
    .timeline-content .collapse-btn {
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        color: white;
        border-color: var(--primary-color);
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
        animation: pulse-glow 2s infinite;
    }
    
    .timeline-content .collapse-btn i {
        transform: rotate(180deg);
        color: white;
        text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
    }
    
    .timeline-content.expanded .collapse-btn i {
        transform: rotate(0deg);
    }
}

/* Desktop: expanded by default */
@media (min-width: 769px) {
    .timeline-content .job-responsibilities,
    .timeline-content .experience-links {
        max-height: none;
        opacity: 1;
    }
    
    .timeline-content.collapsed .job-responsibilities,
    .timeline-content.collapsed .experience-links {
        max-height: 0;
        opacity: 0;
        overflow: hidden;
    }
}

/* Project Cards Collapsible Functionality */
.project-collapsible-header {
    cursor: pointer;
    position: relative;
    transition: var(--transition);
    display: block;
    width: 100%;
}

.project-collapsible-header .project-header {
    position: relative;
    padding-right: 50px; /* Space for chevron button */
    cursor: pointer;
}

.project-collapsible-header .project-header h3 {
    margin-right: 1rem;
    cursor: pointer;
}

.project-collapsible-header .project-type {
    cursor: pointer;
}

.project-collapse-btn {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 12px; /* Squircle shape */
    transition: var(--transition);
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    pointer-events: auto;
}

.project-collapse-btn:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.project-collapse-btn:hover i {
    color: white;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

.project-collapse-btn:active {
    transform: translateY(-50%) scale(0.95);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.4);
}

.project-collapse-btn i {
    transition: all 0.3s ease;
}

.project-details {
    overflow: hidden;
    transition: all 0.3s ease;
}

/* Only hide project details when collapsed */
.project-card.collapsed .project-details {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    margin-bottom: 0;
    overflow: hidden;
}

.project-card.collapsed .project-collapse-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
    animation: pulse-glow 2s infinite;
}

.project-card.collapsed .project-collapse-btn i {
    transform: rotate(180deg);
    color: white;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

/* Mobile-first approach: collapsed by default on mobile */
@media (max-width: 768px) {
    .project-card .project-details {
        max-height: 0;
        opacity: 0;
        margin-top: 0;
        margin-bottom: 0;
        overflow: hidden;
    }
    
    .project-card.expanded .project-details {
        max-height: 2000px;
        opacity: 1;
        margin-top: 0.5rem;
        margin-bottom: 0;
    }
    
    /* Only highlight chevron when collapsed (default state on mobile) */
    .project-card .project-collapse-btn {
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        color: white;
        border-color: var(--primary-color);
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
        animation: pulse-glow 2s infinite;
    }
    
    .project-card .project-collapse-btn i {
        transform: rotate(180deg);
        color: white;
        text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
    }
    
    /* Reset chevron styling when expanded */
    .project-card.expanded .project-collapse-btn {
        background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
        color: var(--text-secondary);
        border-color: var(--border-color);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        animation: none;
    }
    
    .project-card.expanded .project-collapse-btn i {
        transform: rotate(0deg);
        color: var(--text-secondary);
        text-shadow: none;
    }
}

/* Desktop: expanded by default */
@media (min-width: 769px) {
    .project-card .project-details {
        max-height: none;
        opacity: 1;
    }
    
    .project-card.collapsed .project-details {
        max-height: 0;
        opacity: 0;
        overflow: hidden;
    }
    
    /* Ensure chevron has normal styling when expanded (default on desktop) */
    .project-card .project-collapse-btn {
        background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
        color: var(--text-secondary);
        border-color: var(--border-color);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        animation: none;
    }
    
    .project-card .project-collapse-btn i {
        color: var(--text-secondary);
        text-shadow: none;
    }
    
    .project-header {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: flex-start;
    }
    
    .project-collapsible-header .project-header {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: flex-start;
    }
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.project-header {
    display: flex;
    flex-wrap: wrap;
    align-items: start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1 1 280px; /* Wrap when title needs more than ~280px */
    max-width: 100%; /* Allow text to wrap within the h3 */
}

.project-type {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
    flex: 0 0 auto; /* Don't grow or shrink */
    order: 2; /* Ensure tag comes after title when wrapping */
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: var(--background-alt);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.tech-tag.lab {
    background: linear-gradient(135deg, var(--accent-color), var(--gold-field));
    color: var(--secondary-color);
    border-color: var(--accent-color);
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(218, 170, 0, 0.3);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: var(--transition);
}

.contact-method:hover {
    background: var(--background-alt);
    transform: translateX(4px);
}

.contact-method i {
    color: var(--primary-color);
    font-size: 1.25rem;
    width: 20px;
    text-align: center;
}

.contact-method div {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-method .main-info {
    display: block;
    min-width: 0;
}

.contact-method strong {
    color: var(--text-primary);
    font-weight: 600;
}

.contact-method strong::after {
    content: ": ";
}

.contact-method span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.resume-download {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.resume-download h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.resume-download p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

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

/* Footer */
footer {
    background: var(--text-primary);
    color: white;
    margin-top: 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 3rem;
    align-items: start;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section h4::before {
    content: '';
    width: 3px;
    height: 16px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 0.5rem;
    line-height: 1.4;
    font-size: 0.9rem;
}

.footer-section p i {
    width: 16px;
    margin-right: 0.5rem;
    opacity: 0.7;
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0;
}

.footer-section ul li a:hover {
    color: white;
    color: var(--accent-color);
    transform: translateX(2px);
}





.footer-contact {
    grid-column: 1 / -1;
    text-align: center;
}

.footer-contact h4 {
    text-align: center;
    margin-bottom: 0.75rem;
    justify-content: center;
}

.footer-tagline {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    font-style: italic;
    text-align: center;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-align: left;
}

.footer-text {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-info {
    text-align: left;
}

.footer-info h4 {
    margin: 0 0 0.5rem 0;
    padding: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    text-align: left;
}

.footer-title {
    margin: 0 0 0.75rem 0;
    padding: 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    font-style: italic;
    text-align: center;
}

.footer-contact-simple {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    justify-content: flex-start;
    margin: 0;
    padding: 0;
    text-align: center;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: left;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.contact-item i {
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-item div {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.contact-item strong {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.1rem;
}

.contact-item span {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: flex-start;
}

.social-links {
    display: flex;
    flex-direction: row;
    gap: 0.75rem;
    align-items: flex-start;
    justify-content: flex-end;
}

.social-links a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 0.85rem;
    font-weight: 500;
    min-width: 120px;
    justify-content: flex-start;
}

.social-links a i {
    font-size: 1rem;
    width: 16px;
    flex-shrink: 0;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-1px);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-end;
}

.footer-note {
    font-style: italic;
    font-size: 0.85rem;
    color: var(--accent-color);
    margin: 0;
    padding: 0;
    line-height: 1.4;
    text-align: left;
}

.footer-copyright {
    font-size: 0.8rem;
    opacity: 0.7;
    margin: 0;
    padding: 0.75rem 0 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: left;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* Progress Bar */
.progress-container {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 101;
}

.progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    transition: width 0.1s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .contact-links {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .hamburger-menu,
    .mobile-home-icon {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        left: -100%;
        flex-direction: column;
        background: white;
        height: 100vh;
        width: 280px;
        padding: 80px 20px 20px;
        box-shadow: var(--shadow-xl);
        transition: left 0.3s ease;
        z-index: 100;
        gap: 0;
    }
    
    .nav-links li {
        width: 100%;
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-links a {
        display: block;
        padding: 0.5rem 0;
        font-size: 1.1rem;
    }
    
    body.menu-open .nav-links {
        left: 0;
    }
    
    body.menu-open .nav-overlay {
        opacity: 1;
        visibility: visible;
    }
    
    body.menu-open .hamburger-menu .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    body.menu-open .hamburger-menu .bar:nth-child(2) {
        opacity: 0;
    }
    
    body.menu-open .hamburger-menu .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .education-header {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .job-header {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .job-subtitle-period {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .project-header {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .project-header h3 {
        flex: none; /* Reset flex on mobile */
        max-width: none; /* Reset max-width */
    }
    
    .project-type {
        order: unset; /* Reset order on mobile */
        align-self: flex-start; /* Align to start */
    }
    
    .timeline {
        padding-left: 1.5rem;
    }
    
    .timeline-marker {
        left: -1.5rem;
    }
    
    main {
        padding: 1rem;
    }
    
    .content-section {
        margin-bottom: 1.5rem;
    }
    
    .footer-content {
        padding: 2rem 1rem;
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-left {
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-info h4 {
        text-align: center;
    }
    
    .footer-contact-simple {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer-text {
        text-align: center;
    }
    
    .footer-note {
        text-align: center;
    }
    
    .footer-copyright {
        text-align: center;
    }
    
    .contact-details {
        gap: 1rem;
        text-align: center;
    }
    
    .contact-item {
        justify-content: center;
        gap: 0.75rem;
    }
    
    .contact-item div {
        align-items: center;
        text-align: center;
    }
    
    .social-links {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
        align-items: center;
    }
    
    .social-links a {
        padding: 0.75rem;
        flex-direction: column;
        gap: 0.25rem;
        min-width: auto;
    }
    
    .social-links a span {
        font-size: 0.75rem;
    }
    
    .footer-right {
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.25rem;
    }
    
    .contact-link {
        width: 100%;
        justify-content: center;
    }
    
    .content-section h2 {
        font-size: 1.75rem;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-category,
    .project-card,
    .education-card,
    .timeline-content {
        padding: 1rem;
    }
}

/* Print Styles */
@media print {
    body {
        padding-top: 0;
        background: white;
        color: black;
    }
    
    nav,
    .back-to-top,
    .progress-container {
        display: none;
    }
    
    header {
        background: none;
        color: black;
        padding: 2rem 0;
        margin-top: 0;
    }
    
    .contact-link {
        background: none;
        border: 1px solid #ccc;
        color: black;
    }
    
    .content-section {
        page-break-inside: avoid;
        margin-bottom: 1rem;
    }
    
    .timeline-content,
    .project-card,
    .education-card {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

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

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
        transform: translateY(-50%) scale(1);
    }
    50% {
        box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
        transform: translateY(-50%) scale(1.05);
    }
}

.content-section {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Page Header Styles */
.page-header {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
    padding: 4rem 2rem 3rem;
    margin-top: -60px;
    z-index: 10;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    z-index: -1;
}

/* Overview Cards */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.overview-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.overview-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.overview-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.overview-card h3 i {
    color: var(--primary-color);
}

.overview-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    margin-top: 1rem;
    transition: var(--transition);
}

.overview-link:hover {
    color: var(--secondary-color);
    transform: translateX(4px);
}

.quick-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
}

.stat-item strong {
    display: block;
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.stat-item span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Project Page Enhancements */
.project-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.project-type.featured {
    background: linear-gradient(135deg, var(--accent-color), var(--gold-field));
    color: var(--secondary-color);
}

/* Project image styles */
.project-image {
    margin: 1rem 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 220px;
    background: var(--background-alt);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: var(--transition);
}

/* Desktop adjustments */
@media (min-width: 768px) {
    .project-image {
        height: 260px;
    }
}

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

.project-details {
    margin: 1.5rem 0;
}

.project-details h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 1rem 0 0.5rem 0;
}

.project-details h4 i {
    color: var(--primary-color);
}

.project-details ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.project-details li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.project-details li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Project Links Styles */
.project-links {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.project-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 0.9rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.project-link-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.project-link-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.project-link-btn:hover::before {
    left: 100%;
}

.project-link-btn i {
    font-size: 0.9rem;
}

/* Project Videos Styles */
.project-videos {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.video-placeholder {
    background: var(--background-alt);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    margin-bottom: 1rem;
}

.video-thumbnail {
    color: var(--text-secondary);
}

.video-thumbnail i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    opacity: 0.6;
}

.video-thumbnail p {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.video-thumbnail small {
    color: var(--text-light);
    font-style: italic;
}

/* Responsive YouTube embed */
.youtube-embed {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.youtube-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: var(--border-radius);
}

/* Clickable image functionality */
.clickable-image {
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    border: 2px solid rgba(37, 99, 235, 0.2);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
    transition: var(--transition);
}

.clickable-image:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.clickable-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.1);
    opacity: 0;
    transition: var(--transition);
    z-index: 1;
}

.clickable-image:hover img {
    transform: scale(1.02);
}

/* Show visual cue on mobile/touch devices */
@media (max-width: 768px) {
    .gallery-item::before {
        opacity: 1 !important;
    }
}

@media (hover: none) and (pointer: coarse) {
    .gallery-item::before {
        opacity: 1 !important;
    }
}

/* Desktop video improvements */
@media (min-width: 768px) {
    .project-videos {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    
    .youtube-embed {
        padding-bottom: 42%; /* Smaller aspect ratio for desktop */
        margin-bottom: 0;
    }
}

/* Gallery Styles - Collage Layout */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    align-items: start;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    aspect-ratio: 4/3;
    border: 2px solid rgba(37, 99, 235, 0.15);
}

.gallery-item::before {
    content: '🔍 Click to expand';
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 500;
    opacity: 0;
    transition: var(--transition);
    z-index: 2;
    pointer-events: none;
}

.gallery-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: var(--primary-color);
}

.gallery-item:hover::before {
    opacity: 1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    color: white;
    padding: 1.5rem 1rem 1rem;
    transform: translateY(0);
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.95));
}

.gallery-overlay h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
}

.gallery-overlay p {
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.95;
    line-height: 1.4;
}

/* Responsive adjustments */
@media (min-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 2rem;
    }
}

/* Desktop Layout - Simple Grid */
@media (min-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
        max-width: 1200px;
        margin: 0 auto;
    }
    
    /* Keep consistent aspect ratio for desktop */
    .gallery-item {
        aspect-ratio: 4/3;
    }
}



.contact-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.availability-card,
.location-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.availability-card h3,
.location-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.availability-card h3 i,
.location-card h3 i {
    color: var(--primary-color);
}

.availability-item,
.location-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.availability-item:last-child,
.location-item:last-child {
    border-bottom: none;
}

.availability-item strong,
.location-item strong {
    color: var(--text-primary);
}

.availability-item span,
.location-item span {
    color: var(--text-secondary);
}







/* Development Grid */
.development-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.development-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.development-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.development-card h3 i {
    color: var(--primary-color);
}

.development-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.development-card li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.development-card li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.references-note {
    background: var(--background-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.references-note i {
    color: var(--primary-color);
}

.references-note a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.references-note a:hover {
    text-decoration: underline;
}

/* Responsive Updates */
@media (max-width: 768px) {
    .quick-stats {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    
    .availability-item,
    .location-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .development-grid {
        grid-template-columns: 1fr;
    }
}

/* Lab-specific styles */
.research-areas {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.research-item {
    padding: 1rem;
    background: var(--background-alt);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.research-item strong {
    display: block;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.research-item p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* People section styles */
.people-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.person-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.person-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.person-info h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.person-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.person-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.person-focus {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-style: italic;
    margin-bottom: 0.5rem;
}

.person-description {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.researcher-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.researcher-item {
    padding: 1rem;
    background: var(--background-alt);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary-color);
}

.person-links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.person-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    background: var(--background-alt);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

/* Publications section styles */
.publications-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.publication-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.publication-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.publication-header h3 {
    color: var(--primary-color);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.publication-count {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.publication-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.publication-item {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.publication-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.publication-item h4 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.publication-authors {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    font-style: italic;
}

.publication-venue {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

.publication-links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.publication-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    background: var(--background-alt);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.impact-metrics {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1rem;
}

.metric-item {
    text-align: center;
    padding: 1rem;
    background: var(--background-alt);
    border-radius: var(--border-radius);
}

.metric-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Responsive adjustments for lab sections */
@media (max-width: 768px) {
    .publications-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .people-grid {
        grid-template-columns: 1fr;
    }
    
    .research-areas {
        gap: 0.75rem;
    }
    
    .impact-metrics {
        flex-direction: row;
        justify-content: space-around;
        gap: 1rem;
    }
    
    .metric-item {
        flex: 1;
        padding: 0.75rem;
    }
    
    .metric-number {
        font-size: 1.5rem;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-2 {
    margin-top: 1rem;
}

.hidden {
    display: none;
}

/* Floating TOC Styles */
.floating-toc {
    position: fixed;
    top: 140px;
    left: 20px;
    z-index: 100;
    transition: var(--transition);
}

.toc-toggle {
    width: 50px;
    height: 50px;
    background: rgba(37, 99, 235, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.toc-toggle:hover {
    background: rgba(37, 99, 235, 1);
    transform: scale(1.1);
}

.toc-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 320px;
    max-height: calc(100vh - 160px);
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(229, 231, 235, 0.9);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(20px);
    transform: translateX(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
}

.floating-toc.expanded .toc-panel {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
}

.floating-toc.expanded .toc-toggle {
    transform: translateX(320px) scale(0.9);
    background: rgba(239, 68, 68, 0.9);
}

.floating-toc.expanded .toc-toggle:hover {
    background: rgba(239, 68, 68, 1);
}

.floating-toc.expanded .toc-toggle i::before {
    content: "\f00d"; /* FontAwesome times icon */
}

.toc-header {
    font-weight: 600;
    font-size: 1rem;
    color: #1f2937;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid rgba(229, 231, 235, 0.9);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.toc-item {
    margin-bottom: 0.5rem;
}

.toc-link {
    display: block;
    padding: 0.75rem 1rem;
    color: #4b5563;
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 8px;
    transition: var(--transition);
    line-height: 1.4;
    font-weight: 500;
    border-left: 3px solid transparent;
}

.toc-link:hover {
    background: rgba(248, 250, 252, 0.9);
    color: #1f2937;
    border-left-color: var(--primary-color);
}

.toc-link.active {
    background: rgba(37, 99, 235, 0.15);
    color: #1d4ed8;
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.toc-subitem {
    margin-left: 1.5rem;
    margin-bottom: 0.25rem;
}

.toc-subitem .toc-link {
    font-size: 0.85rem;
    padding: 0.5rem 0.75rem;
    font-weight: 400;
}

.toc-subitem .toc-link.active {
    font-weight: 500;
}

.toc-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: rgba(229, 231, 235, 0.8);
    border-radius: 2px;
}

.toc-progress-bar {
    width: 100%;
    background: #2563eb;
    border-radius: 2px;
    transition: height 0.3s ease;
}

/* Experience links styling */
.experience-links {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.experience-links h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.publication-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Timeline adjustments for TOC - handled by JavaScript */

/* Dark mode support for TOC */
@media (prefers-color-scheme: dark) {
    .toc-panel {
        background: rgba(31, 41, 55, 0.98);
        border-color: rgba(75, 85, 99, 0.9);
    }
    
    .toc-header {
        color: #f9fafb;
        border-bottom-color: rgba(75, 85, 99, 0.9);
    }
    
    .toc-link {
        color: #d1d5db;
    }
    
    .toc-link:hover {
        background: rgba(55, 65, 81, 0.9);
        color: #f9fafb;
    }
    
    .toc-link.active {
        background: rgba(59, 130, 246, 0.15);
        color: #60a5fa;
    }
    
    .toc-progress {
        background: rgba(75, 85, 99, 0.8);
    }
    
    .toc-progress-bar {
        background: #3b82f6;
    }
}

/* Mobile adjustments for TOC */
@media (max-width: 768px) {
    .floating-toc {
        top: 120px;
        left: 15px;
    }
    
    .toc-toggle {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    .toc-panel {
        width: calc(100vw - 40px);
        max-height: calc(100vh - 140px);
        left: -10px;
    }
    
    .floating-toc.expanded .toc-toggle {
        transform: translateX(calc(100vw - 20px)) scale(0.9);
    }
    
    /* Hide TOC when mobile menu is open */
    body.menu-open .floating-toc {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }
}

/* Very small screens for TOC */
@media (max-width: 480px) {
    .toc-panel {
        width: calc(100vw - 20px);
        left: -5px;
    }
    
    .floating-toc.expanded .toc-toggle {
        transform: translateX(calc(100vw - 10px)) scale(0.9);
    }
}

/* Contact Page Specific Styles */
.contact-method, .resume-download {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1rem;
}

.resume-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.cv-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.resume-section h4,
.cv-section h4 {
    margin-bottom: 1rem;
}

.resume-download p {
    text-align: left;
}

.email-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1rem;
}

.email-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.email-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    background: var(--background-alt);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.email-method div {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.email-method .main-info {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    align-items: baseline;
    min-width: 0;
}

.email-method small,
.contact-method small {
    display: block;
    margin-top: 0.25rem;
}

.email-method strong {
    flex-shrink: 0;
    white-space: nowrap;
}

.email-method span {
    flex-shrink: 0;
    min-width: max-content;
    white-space: nowrap;
}

.contact-method strong {
    margin-bottom: 0;
}

.email-method:hover {
    background: var(--primary-color);
    color: white;
}

.contact-footer-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 0.5rem;
}

.availability-card, .location-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.contact-row {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.download-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

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

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--background);
    margin: 1% auto;
    padding: 0;
    border-radius: var(--border-radius-lg);
    width: 95%;
    max-width: 1200px;
    height: 95vh;
    overflow: hidden;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--background-alt);
    flex-shrink: 0;
}

.modal-header h3 {
    margin: 0;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.modal-body {
    padding: 0;
    background: white;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

.modal-body iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.modal-footer {
    display: flex;
    gap: 1rem;
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    background: var(--background-alt);
    flex-shrink: 0;
}

.modal-footer .download-btn {
    flex: 1;
    margin: 0;
}

/* Button reset for modal trigger */
button.download-btn {
    border: none;
    cursor: pointer;
    font-family: inherit;
}

button.download-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Contact Page Media Queries */
@media (min-width: 768px) {
    .email-methods {
        flex-direction: row;
    }
    
    .email-method {
        flex: 1;
    }
    
    .contact-footer-cards {
        flex-direction: row;
        gap: 2rem;
    }
    
    .availability-card, .location-card {
        flex: 1;
    }
    
    .contact-row {
        display: flex;
        flex-direction: row;
        gap: 1rem;
    }
    
    .contact-row .contact-method {
        flex: 1;
        min-height: 120px;
        display: flex;
        align-items: center;
        justify-content: flex-start;
        gap: 1rem;
        text-align: left;
    }
    
    .contact-row .contact-method i {
        font-size: 1.5rem;
        color: var(--primary-color);
        flex-shrink: 0;
    }
    
    .download-options {
        flex-direction: row;
        gap: 1rem;
    }
    
    .download-btn {
        flex: 1;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 5% auto;
        max-height: 85vh;
    }
    
    .modal-header {
        padding: 0.5rem 1rem;
    }
    
    .modal-body iframe {
        width: 100%;
        height: 100%;
        border: none;
        display: block;
    }
    
    .modal-footer {
        padding: 1rem 1.5rem;
        flex-direction: column;
    }
    
    .modal-footer .download-btn {
        width: 100%;
    }
}