/* Custom Fonts */
@font-face {
    font-family: 'Harding';
    src: url('Files/Fonts/HardingTextWeb-Regular/HardingTextWeb-Regular.woff2') format('woff2'),
         url('Files/Fonts/HardingTextWeb-Regular/HardingTextWeb-Regular.woff') format('woff'),
         url('Files/Fonts/HardingTextWeb-Regular/HardingTextWeb-Regular.ttf') format('truetype'),
         url('Files/Fonts/HardingTextWeb-Regular/HardingTextWeb-Regular.eot') format('embedded-opentype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background 0.3s, color 0.3s, border 0.3s, box-shadow 0.3s;
}

:root {
    --primary-color: #0d47a1;
    --secondary-color: #0d47a1;
    --accent-color: #4caf50;
    --background-color: #f8f9fa;
    --card-bg: #fff;
    --card-gradient: linear-gradient(145deg, #fff, #f4f6fa 80%);
    --header-gradient: linear-gradient(120deg, #e3eafc 0%, #f5f7fa 100%);
    --footer-bg: #f5f7fa;
    --text-color: #222;
    --muted-text: #666;
    --border-color: #e0e0e0;
    --shadow: 0 4px 24px rgba(0,0,0,0.07);
    --shadow-hover: 0 8px 32px rgba(0,0,0,0.11);
    --radius: 16px;
    --link-hover-color: #0288d1;
    --button-hover-color: #ff5722;
}

/* Typography */
body, h1, h2, h3, h4, h5, h6 {
    font-family: 'Harding', Georgia, 'Times New Roman', Times, serif;
    color: var(--text-color);
}
body {
    background: var(--background-color);
    font-size: 1.08rem;
    line-height: 1.7;
    min-height: 100vh;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    width: 92%;
    margin: 0 auto;
    max-width: 1100px;
}

/* Header */
header {
    background: var(--header-gradient);
    color: var(--primary-color);
    padding: 2.2rem 0 1.2rem 0;
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 2px 16px rgba(13,71,161,0.06);
    margin-bottom: 2.5rem;
}
header .container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
header h1 {
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    margin-bottom: 0.2rem;
}
header .subtitle, header h3 {
    color: var(--secondary-color);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 0.7rem;
    margin-top: 0.2rem;
}
header nav {
    width: 100%;
    margin-top: 0.7rem;
}
header nav ul {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    padding: 0;
    flex-wrap: wrap;
}
header nav ul li a {
    color: var(--primary-color);
    font-size: 1.08rem;
    font-weight: 500;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
    display: block;
}
header nav ul li a:hover, header nav ul li a:focus {
    background: var(--primary-color);
    color: #fff;
}

/* Responsive Navigation (Hamburger for mobile) */
@media (max-width: 700px) {
    header .container {
        align-items: stretch;
    }
    header nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }
    header nav ul li a {
        padding: 0.9rem 1.2rem;
        font-size: 1.13rem;
    }
    header {
        padding: 1.2rem 0 0.7rem 0;
    }
    .container {
        width: 98%;
    }
}

/* Hero Section */
.hero {
    background: var(--card-gradient);
    border-radius: var(--radius);
    padding: 2.7rem 2.2rem 2.2rem 2.2rem;
    margin-bottom: 2.5rem;
    box-shadow: var(--shadow);
    text-align: center;
}
.hero h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 1.2rem;
    font-weight: 700;
}
.hero p {
    font-size: 1.18rem;
    color: var(--muted-text);
    margin: 0 auto;
    max-width: 700px;
    font-weight: 400;
}

/* Card List & Card Section */
.card-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2.2rem;
    justify-content: space-between;
}
.card-section {
    flex: 1 1 320px;
    background: var(--card-gradient);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2.2rem 1.7rem;
    margin-bottom: 2rem;
    min-width: 320px;
    transition: box-shadow 0.2s, border 0.2s, transform 0.2s;
}
.card-section:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
    transform: translateY(-6px) scale(1.01);
}
.card-section h2 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 1.1rem;
    text-align: left;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}
.card-section ul {
    padding-left: 1.1rem;
}
.card-section li {
    margin-bottom: 1.1rem;
    font-size: 1.07rem;
    color: var(--text-color);
}
.awards-list li {
    margin-bottom: 1.3rem;
}

/* Section Titles */
section h2 {
    font-size: 2.1rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1.2rem;
    font-weight: 700;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 10px;
    letter-spacing: 0.01em;
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}
a:hover, .card a:hover {
    color: var(--secondary-color);
}

/* Footer */
footer {
    background: var(--footer-bg);
    color: #222;
    text-align: center;
    padding: 2.2rem 0 1.2rem 0;
    margin-top: 2.5rem;
    border-radius: var(--radius) var(--radius) 0 0;
    font-size: 1.07rem;
    box-shadow: 0 -4px 12px rgba(0,0,0,0.08);
}
footer p {
    margin: 0;
    font-style: italic;
    line-height: 1.7;
    font-size: 1.1rem;
}

/* Contact Section */
.contact-section h2 {
    margin-top: 2rem;
}
.contact-section ul {
    list-style: none;
    padding: 0;
}
.contact-section ul li {
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
}
.contact-section a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}
.contact-section a:hover {
    color: var(--secondary-color);
}

/* Button Styles */
button, .btn-primary {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    font-family: inherit;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(13,71,161,0.08);
    margin-top: 0.7rem;
    margin-bottom: 0.7rem;
}
button:hover, .btn-primary:hover {
    background-color: var(--button-hover-color);
}

/* Section Navigation (for publications page) */
.section-nav {
    margin: 1.5rem 0 2rem 0;
    text-align: center;
}
.section-nav ul {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 1rem;
    list-style: none;
    padding: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(13,71,161,0.06);
    padding: 0.5rem 1rem;
}
.section-nav ul li a {
    color: var(--primary-color);
    font-size: 1.05rem;
    padding: 0.5rem 1.1rem;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
    font-weight: 500;
    display: block;
}
.section-nav ul li a:hover, .section-nav ul li a:focus {
    background: var(--primary-color);
    color: #fff;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes slideIn {
    from { transform: translateX(-100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive Design */
@media (max-width: 900px) {
    .card-list {
        flex-direction: column;
        gap: 0;
    }
    .card-section {
        min-width: unset;
    }
    header .container {
        align-items: center;
    }
}
@media (max-width: 600px) {
    header h1 {
        font-size: 2rem;
    }
    section h2 {
        font-size: 1.5rem;
    }
    .card-section {
        padding: 1.2rem;
    }
    .hero {
        padding: 1.5rem 0.7rem;
    }
    .section-nav ul {
        flex-direction: column;
        gap: 0.5rem;
        padding: 0.5rem;
    }
}
@media (max-width: 768px) {
    header .container {
        align-items: center;
    }
    header nav ul {
        flex-direction: column;
        gap: 0.7rem;
        margin-top: 1rem;
    }
    .container {
        width: 98%;
    }
}

/* About Section Image Formatting */
#about .about-content {
    display: flex;
    align-items: center;
    gap: 20px;
}
#about .about-image {
    max-width: 200px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
#about p {
    flex: 1;
    line-height: 1.6;
    font-size: 1.13rem;
    color: var(--text-color);
    text-align: justify;
    margin-top: 1rem;
}