/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-color: #fdfbf7;
    /* Warm off-white */
    --text-color: #2c3e50;
    /* Dark blue-grey */
    --accent-color: #e67e22;
    /* Soft orange */
    --accent-hover: #d35400;
    --card-bg: #ffffff;
    --border-color: #e8e5e0;
    --font-heading: 'Lora', serif;
    --font-body: 'Open Sans', sans-serif;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fdfbf7;
    /*background-color: #f5f5f0;*/
    /*background-image: url('watercolor2.jpg');*/
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: #ffffff;
    backdrop-filter: blur(10px);
    /*    background-image: url('vecteezy.jpg');
    background-size: cover;
    background-position: center;    */
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title a {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--text-color);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav a {
    color: #7f8c8d;
    font-weight: 600;
    font-size: 15px;
    padding: 5px 0;
    position: relative;
}

nav a:hover,
nav a.active {
    color: var(--accent-color);
}

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

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
}

/* Main Content */
main {
    min-height: 80vh;
}

/* Hero Banner */
.hero-banner {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 60px 0 40px;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    color: #fff;
    margin-bottom: 10px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-position {
    font-size: 1.2rem;
    color: #f0f0f0;
    font-weight: 400;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* Main Content */
.main-content {
    padding: 60px 0;
}

.content-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.primary-content {
    max-width: 100%;
}

.intro-section h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 20px;
    font-weight: 600;
}

.intro-section p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 30px;
}

.btn-cv {
    display: inline-block;
    padding: 14px 35px;
    background-color: var(--accent-color);
    color: #fff !important;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(230, 126, 34, 0.3);
    transition: all 0.3s ease;
}

.btn-cv:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(230, 126, 34, 0.4);
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-card {
    background-color: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    border-left: 4px solid var(--accent-color);
}

.sidebar-card h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--text-color);
    margin-bottom: 20px;
    font-weight: 600;
}

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

.research-list li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    font-size: 1rem;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
}

.research-list li:last-child {
    border-bottom: none;
}

.research-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.contact-details p {
    margin-bottom: 20px;
    line-height: 1.6;
}

.contact-details p:last-child {
    margin-bottom: 0;
}

.contact-details strong {
    color: var(--accent-color);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 5px;
}

.contact-details a {
    color: var(--text-color);
    word-break: break-all;
}

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

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    text-align: center;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    margin-bottom: 15px;
    color: var(--text-color);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 30px;
    font-family: var(--font-heading);
    font-style: italic;
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: #fff !important;
    border-radius: 50px;
    /* Pill shape */
    font-weight: 600;
    box-shadow: 0 4px 6px rgba(230, 126, 34, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(230, 126, 34, 0.3);
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    padding-bottom: 60px;
}

/* Cards */
.card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
    display: inline-block;
}

.interest-list {
    list-style: none;
    margin: 0;
    text-align: left;
}

.interest-list li {
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
    font-family: 'Lato', sans-serif;
}

.interest-list li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.contact-info p {
    margin-bottom: 12px;
    font-family: 'Lato', sans-serif;
    text-align: left;
    font-size: 0.95rem;
    white-space: nowrap;
}

.contact-info p:last-child {
    margin-bottom: 0;
}

/* Footer */
footer {
    background-color: #fff;
    padding: 30px 0;
    text-align: center;
    color: #7f8c8d;
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #fff;
        flex-direction: column;
        text-align: center;
        padding: 20px 0;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .hero-banner {
        height: 350px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

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

    .content-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .intro-section h2 {
        font-size: 1.6rem;
    }

    .intro-section p {
        font-size: 1rem;
    }
}

/* Research Page Compatibility */
.content-section {
    padding: 40px 0;
}

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

.publication-list h2 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: 20px;
    color: var(--text-color);
    border-bottom: 2px solid #b8b3ad;
    padding-bottom: 10px;
}

.publication-list ul,
.publication-list ol {
    margin-left: 20px;
}

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

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    text-align: center;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    margin-bottom: 15px;
    color: var(--text-color);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 30px;
    font-family: var(--font-heading);
    font-style: italic;
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: #fff !important;
    border-radius: 50px;
    /* Pill shape */
    font-weight: 600;
    box-shadow: 0 4px 6px rgba(230, 126, 34, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(230, 126, 34, 0.3);
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    padding-bottom: 60px;
}

/* Cards */
.card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
    display: inline-block;
}

.interest-list {
    list-style: none;
    margin: 0;
    text-align: left;
}

.interest-list li {
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
    font-family: 'Lato', sans-serif;
}

.interest-list li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.contact-info p {
    margin-bottom: 12px;
    font-family: 'Lato', sans-serif;
    text-align: left;
}

/* Footer */
footer {
    background-color: #fff;
    padding: 30px 0;
    text-align: center;
    color: #7f8c8d;
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #fff;
        flex-direction: column;
        text-align: center;
        padding: 20px 0;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .hero-banner {
        height: 350px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

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

    .content-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .intro-section h2 {
        font-size: 1.6rem;
    }

    .intro-section p {
        font-size: 1rem;
    }
}

/* Research Page Compatibility */
.content-section {
    padding: 40px 0;
}

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

.publication-list h2 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: 20px;
    color: var(--text-color);
    border-bottom: 2px solid #b8b3ad;
    padding-bottom: 10px;
}

.publication-list ul,
.publication-list ol {
    margin-left: 20px;
}

.publication-list li {
    margin-bottom: 15px;
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    text-align: center;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    margin-bottom: 15px;
    color: var(--text-color);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 30px;
    font-family: var(--font-heading);
    font-style: italic;
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: #fff !important;
    border-radius: 50px;
    /* Pill shape */
    font-weight: 600;
    box-shadow: 0 4px 6px rgba(230, 126, 34, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(230, 126, 34, 0.3);
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    padding-bottom: 60px;
}

/* Cards */
.card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
    display: inline-block;
}

.interest-list {
    list-style: none;
    margin: 0;
    text-align: left;
}

.interest-list li {
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
    font-family: 'Lato', sans-serif;
}

.interest-list li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.contact-info p {
    margin-bottom: 12px;
    font-family: 'Lato', sans-serif;
    text-align: left;
}

/* Footer */
footer {
    background-color: #fff;
    padding: 30px 0;
    text-align: center;
    color: #7f8c8d;
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #fff;
        flex-direction: column;
        text-align: center;
        padding: 20px 0;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .hero-banner {
        height: 350px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

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

    .content-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .intro-section h2 {
        font-size: 1.6rem;
    }

    .intro-section p {
        font-size: 1rem;
    }
}

/* Research Page Compatibility */
.content-section {
    padding: 40px 0;
}

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

.publication-list h2 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: 20px;
    color: var(--text-color);
    border-bottom: 2px solid #b8b3ad;
    padding-bottom: 10px;
}

.publication-list ul,
.publication-list ol {
    margin-left: 0;
    list-style: none;
}

.publication-list li {
    margin-bottom: 10px;
    padding-left: 15px;
    position: relative;
}

.publication-list li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.publication-list strong {
    color: #073763;
    font-weight: 700;
}

.publication-list strong a {
    color: #073763;
    text-decoration: none;
}

.publication-list strong a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.paper-extra-link {
    font-size: 0.9rem;
    margin-left: 8px;
}

/* New Main Grid Layout */
.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 50px;
    padding: 70px 30px;
}

/* Left Column */
.left-column {
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: center;
}

.bio-image-container {
    width: 100%;
    max-width: 450px;
}

.bio-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.bio-text h1 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.bio-text p {
    font-size: 1.02rem;
    line-height: 1.7;
    color: #4a5568;
    font-family: 'Lato', sans-serif;
    text-align: justify;
}

.cv-inline {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
}

.cv-inline:hover {
    color: var(--accent-hover);
}

.kdi-inline {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
}

.kdi-inline:hover {
    color: var(--accent-hover);
}

/* Right Column */
.right-column {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.cv-section {
    margin-bottom: 10px;
}

.cv-link {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-color);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s ease;
}

.cv-link:hover {
    border-bottom-color: var(--accent-color);
}

.info-section h2 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--text-color);
    margin-bottom: 15px;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 8px;
    display: inline-block;
}

/* Responsive */
@media (max-width: 767px) {
    .bio-image-container {
        max-width: 300px;
    }
}

@media (min-width: 768px) {
    .main-grid {
        grid-template-columns: 5fr 2fr;
        align-items: start;
    }

    .bio-text h1 {
        font-size: 2.5rem;
    }
}
/* Icon updates */
.interest-list li {
    padding-left: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.interest-list li::before {
    content: none;
}

.interest-list li .icon {
    width: 20px;
    height: 20px;
    stroke: var(--accent-color);
    flex-shrink: 0;
}