@charset "utf-8";

/* Professional Academic Website - Job Application Focus */

:root {
    /* Subtle Professional Color Palette */
    --primary-color: #374151;
    --secondary-color: #6b7280;
    --accent-color: #4f46e5;
    --accent-soft: #f8fafc;
    --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
    --success-color: #059669;
    --warning-color: #d97706;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #6b7280;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --primary-blue: var(--primary-color);
    --secondary-blue: var(--accent-color);
    --accent-blue: #818cf8;
    --light-blue: #f1f5f9;
    --dark-gray: var(--gray-800);
    --medium-gray: var(--gray-600);
    --light-gray: var(--gray-50);
    --success-green: var(--success-color);
    --warning-orange: var(--warning-color);
    
    /* Typography */
    --font-primary: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Raleway', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space-lg: 1rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    
    /* Transitions */
    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.25s ease-out;
    --transition-slow: 0.35s ease-out;
}

/* Global Styles */
body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
    padding-top: 80px; /* Add space for fixed navbar */
}

/* Enhanced Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Compact Card Styling */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    margin-bottom: var(--space-lg);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    border-color: var(--gray-300);
}

.card-header {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    color: var(--gray-800);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
    font-family: var(--font-secondary);
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
}

.card-header i {
    font-size: 1rem;
    opacity: 0.9;
}

.card-header .header-content {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.card-header .collapse-icon {
    font-size: 0.9rem;
    transition: transform var(--transition-fast);
}

.card-header[aria-expanded="false"] .collapse-icon {
    transform: rotate(-90deg);
}

.card-body {
    padding: var(--space-lg);
}

/* Compact profile section */
.profile-card .card-body {
    padding: var(--space-xl);
}

/* Profile Section Enhancement */
.profile-card .card-body {
    text-align: center;
    padding: var(--space-2xl);
}

.profile-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin: 0 auto var(--space-lg);
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--light-blue);
    transition: var(--transition-normal);
}

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

.profile-name {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.profile-title {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--accent-color);
    margin-bottom: var(--space-lg);
}

.profile-bio {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

/* Social Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--gray-100);
    color: var(--gray-700);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 1.2rem;
}

.social-link:hover {
    background: var(--accent-color);
    color: var(--white);
    transform: translateY(-3px);
    text-decoration: none;
}

/* Action Buttons */
.profile-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.btn-primary-custom {
    background: var(--accent-gradient);
    color: var(--white);
    padding: var(--space-sm) var(--space-xl);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: var(--transition-normal);
    font-size: 1rem;
    box-shadow: 0 4px 14px 0 rgba(102, 126, 234, 0.25);
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(102, 126, 234, 0.35);
    color: var(--white);
    text-decoration: none;
}

.btn-secondary-custom {
    background: transparent;
    color: var(--accent-color);
    padding: var(--space-sm) var(--space-xl);
    border: 2px solid var(--accent-color);
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: var(--transition-normal);
}

.btn-secondary-custom:hover {
    background: var(--accent-color);
    color: var(--white);
    text-decoration: none;
    transform: translateY(-2px);
}

/* News Items - More Compact */
.news-item {
    padding: var(--space-sm) var(--space-md);
    border-left: 3px solid var(--gray-300);
    background: var(--gray-50);
    margin-bottom: var(--space-sm);
    border-radius: 0 6px 6px 0;
    transition: var(--transition-fast);
}

.news-item:hover {
    background: var(--gray-100);
    border-left-color: var(--accent-color);
}

.news-date {
    font-weight: 600;
    color: var(--accent-color);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.news-content {
    color: var(--gray-700);
    line-height: 1.5;
    font-size: 0.95rem;
}

/* Publication Items - More Compact */
.publication-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-md);
    padding: var(--space-md);
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    margin-bottom: var(--space-sm);
    transition: var(--transition-normal);
    background: var(--white);
}

.publication-item:hover {
    border-color: var(--gray-400);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.publication-image {
    width: 100px;
    height: 70px;
    background: var(--light-gray);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--medium-gray);
}

.publication-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}

.publication-title {
    font-family: var(--font-secondary);
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}

.publication-authors {
    color: var(--medium-gray);
    margin-bottom: var(--space-xs);
    font-size: 0.9rem;
}

.publication-venue {
    color: var(--dark-gray);
    font-weight: 500;
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
}

.publication-abstract {
    color: var(--medium-gray);
    font-size: 0.85rem;
    line-height: 1.4;
    margin-bottom: var(--space-sm);
}

.publication-links {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.publication-link {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 2px 8px;
    border-radius: 12px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.publication-link:hover {
    background: var(--gray-300);
    color: var(--gray-800);
    text-decoration: none;
}

/* Experience/Awards Timeline - More Compact */
.timeline-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-md);
    padding: var(--space-md);
    border-left: 3px solid var(--gray-300);
    margin-bottom: var(--space-md);
    background: var(--gray-50);
    border-radius: 0 6px 6px 0;
    transition: var(--transition-normal);
}

.timeline-item:hover {
    background: var(--gray-100);
    border-left-color: var(--accent-color);
    transform: translateX(3px);
}

.timeline-date {
    font-weight: 700;
    color: var(--accent-color);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    min-width: 90px;
}

.timeline-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-xs);
}

.timeline-logo-img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    margin-right: var(--space-xs);
    border-radius: 2px;
}

.timeline-title {
    font-family: var(--font-secondary);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--space-xs);
}

.timeline-organization {
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: var(--space-xs);
    font-size: 0.9rem;
}

.timeline-description {
    color: var(--gray-700);
    line-height: 1.5;
    font-size: 0.9rem;
}

/* Navigation Enhancement */
.navbar {
    background: var(--white) !important;
    box-shadow: var(--shadow-sm);
    padding: var(--space-md) 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 70px;
    display: flex;
    align-items: center;
}

.navbar-brand {
    font-family: var(--font-secondary);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-blue) !important;
}

.navbar-nav .nav-link {
    color: var(--dark-gray) !important;
    font-weight: 500;
    padding: var(--space-sm) var(--space-md) !important;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    background: var(--light-blue);
    color: var(--primary-blue) !important;
}

/* Services/Talks */
.service-item,
.talk-item {
    padding: var(--space-lg);
    background: var(--white);
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    margin-bottom: var(--space-md);
    transition: var(--transition-normal);
}

.service-item:hover,
.talk-item:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.service-role,
.talk-title {
    font-family: var(--font-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: var(--space-xs);
}

.service-venue,
.talk-venue {
    color: var(--medium-gray);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.service-description,
.talk-description {
    color: var(--dark-gray);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--light-gray);
    border-top: 1px solid #e5e7eb;
    padding: var(--space-xl) 0;
    margin-top: var(--space-2xl);
    text-align: center;
    color: var(--medium-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .profile-name {
        font-size: 2rem;
    }
    
    .profile-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .publication-item {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .publication-image {
        width: 100%;
        height: 120px;
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .timeline-date {
        min-width: auto;
    }
    
    .social-links {
        flex-wrap: wrap;
    }
}

/* Print Styles for CV/Resume */
@media print {
    .navbar,
    .footer,
    .btn-primary-custom,
    .btn-secondary-custom {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
    
    .card-header {
        background: var(--light-gray) !important;
        color: var(--dark-gray) !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states for accessibility */
.btn-primary-custom:focus,
.btn-secondary-custom:focus,
.social-link:focus,
.publication-link:focus {
    outline: 2px solid var(--secondary-blue);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-blue: #000080;
        --secondary-blue: #0000ff;
        --dark-gray: #000000;
        --medium-gray: #666666;
    }
}