custom-styles.css

/* Base styles with improved variables */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #1abc9c;
    --light-color: #f8f9fa;
    --dark-color: #2c3e50;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --container-width: 1200px;
    --content-padding: 2rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 3rem;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #fff;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: #2980b9;
}

/* Improved container and grid system */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.justify-content-center {
    justify-content: center;
}

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

[class*="col-"] {
    padding: 0 15px;
    width: 100%;
}

.col-12 {
    flex: 0 0 100%;
    max-width: 100%;
}

/* Hero section with improved responsiveness */
.hero-section {
    background: linear-gradient(135deg, #2c3e50 0%, #4b6cb7 100%);
    padding: 5rem 2rem;
    text-align: center;
    color: white;
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
}


.hero-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/contents/images/dna-pattern.svg');
    background-size: cover;
    opacity: 0.1;
    z-index: 0;
}

.hero-section > * {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
}

.hero-section p {
    font-size: clamp(1rem, 3vw, 1.25rem);
    max-width: 800px;
    margin: 0 auto;
    font-weight: 300;
}

/* Feature section styling */
.feature-section {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.feature-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    height: 100%;
    transition: var(--transition);
    border: 1px solid #eaeaea;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-img {
    max-width: 100%;
    height: auto;
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

/* Card styling */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-lg);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.card-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.card-body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.card-body .btn {
    margin-top: auto;
    align-self: flex-start;
}

/* Content cards for publications and news */
.content-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    height: 100%;
    border: 1px solid #eaeaea;
    margin-bottom: var(--spacing-lg);
}

.content-card h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

/* Button styles */
.btn {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-sm {
    padding: 0.25rem 1rem;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    color: white;
}

.btn-outline-secondary {
    background-color: transparent;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
}

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

/* Publications with improved styling */
.publication {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
}

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

.publication h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* News items with better contrast */
.news-item {
    padding: 1.25rem;
    border-radius: var(--border-radius);
    background-color: var(--light-color);
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
}

.news-item:hover {
    background-color: #e9ecef;
}

.news-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

/* Stats section styling */
.stats-section {
    background-color: #f8f9fa;
    padding: 3rem 0;
}

.stat-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    margin-bottom: var(--spacing-md);
    padding: 1.5rem;
    border: 1px solid #eaeaea;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

/* Section divider */
.section-divider {
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(0,0,0,0.1), transparent);
    margin: var(--spacing-xl) 0;
}

/* Better spacing utilities */
.mb-3 {
    margin-bottom: var(--spacing-md);
}

.mb-4 {
    margin-bottom: var(--spacing-lg);
}

.mt-3 {
    margin-top: var(--spacing-md);
}

.mt-4 {
    margin-top: var(--spacing-lg);
}

.mt-5 {
    margin-top: var(--spacing-xl);
}

.px-3 {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.py-3 {
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
}

.py-4 {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

.py-5 {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

.p-3 {
    padding: var(--spacing-md);
}

.p-4 {
    padding: var(--spacing-lg);
}

.h-100 {
    height: 100%;
}

/* Improved responsive grid system */
@media (min-width: 576px) {
    .col-sm-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (min-width: 768px) {
    .col-md-3 {
        flex: 0 0 25%;
        max-width: 25%;
    }
    
    .col-md-4 {
        flex: 0 0 33.333333%;
        max-width: 33.333333%;
    }
    
    .col-md-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }
    
    .col-md-8 {
        flex: 0 0 66.666667%;
        max-width: 66.666667%;
    }
}

/* Improved responsive behavior for smaller screens */
@media (max-width: 768px) {
    .hero-section {
        padding: 3rem 1rem;
        margin-bottom: var(--spacing-lg);
    }
    
    .publication h4,
    .news-item h3 {
        font-size: 1rem;
    }
    
    .section-divider {
        margin: var(--spacing-lg) 0;
    }
    
    .stat-card h3 {
        font-size: 1.75rem;
    }
}

/* Extra small devices */
@media (max-width: 575.98px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .row {
        margin: 0 -10px;
    }
    
    [class*="col-"] {
        padding: 0 10px;
    }
    
    .feature-card, .content-card, .stat-card {
        margin-bottom: var(--spacing-md);
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.4rem 1.2rem;
    }
}

/* Animation for cards on hover */
@media (min-width: 992px) {
    .card, .feature-card, .content-card, .stat-card {
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    
    .card:hover, .feature-card:hover, .content-card:hover, .stat-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    }
}

@media (max-width: 768px) {
    /* Give every stacked column some space below it */
    .columns > .column {
        margin-bottom: var(--spacing-lg);
    }
}