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

:root {
    --primary-color: #2d5a27;
    --secondary-color: #4a7c59;
    --accent-color: #8fbc8f;
    --light-green: #d4edda;
    --dark-green: #1e3a1e;
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #2d5a27 0%, #4a7c59 100%);
    --gradient-secondary: linear-gradient(135deg, #8fbc8f 0%, #d4edda 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-logo i {
    font-size: 2rem;
    animation: leaf-float 3s ease-in-out infinite;
}

@keyframes leaf-float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-5px) rotate(5deg);
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--gradient-secondary);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.hero {
    background: var(--gradient-secondary);
    background-size: 400% 400%;
    position: relative;
}

.floating-leaves {
    position: absolute;
    width: 100%;
    height: 100%;
}

.leaf {
    position: absolute;
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    border-radius: 50% 0 50% 50%;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.leaf-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.leaf-2 {
    top: 40%;
    right: 15%;
    animation-delay: 1s;
}

.leaf-3 {
    top: 60%;
    left: 20%;
    animation-delay: 2s;
}

.leaf-4 {
    top: 80%;
    right: 25%;
    animation-delay: 3s;
}

.leaf-5 {
    top: 30%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-text {
    animation: slideInLeft 1s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--dark-green);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.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;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slideInRight 1s ease-out;
}

.profile-placeholder {
    width: 300px;
    height: 300px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-hover);
    animation: pulse 2s ease-in-out infinite;
    overflow: hidden;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

/* Section Styles */
section {
    padding: 80px 0;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-green);
    margin-bottom: 3rem;
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.section-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* About Section */
.about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--light-green);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.email-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
}

.email-link:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    transform: translateY(-1px);
}

.skills-container h3 {
    font-size: 1.5rem;
    color: var(--dark-green);
    margin-bottom: 2rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.skill-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.skill-item span {
    font-weight: 600;
    color: var(--text-dark);
}

/* Education Section */
.education {
    background: var(--light-green);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 20px;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 0 0 5px var(--white);
}

.timeline-content {
    position: relative;
    width: 45%;
    padding: 20px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    animation: floatCard 6s ease-in-out infinite;
}

@keyframes floatCard {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

.timeline-item:nth-child(odd) .timeline-content {
    left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    left: 55%;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.timeline-content h3 {
    color: var(--dark-green);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.timeline-content .institution {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-content .location {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.timeline-content .period {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Experience Section */
.experience {
    background: var(--white);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.experience-card {
    background: var(--white);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 5px solid var(--primary-color);
    animation: floatCard 6s ease-in-out infinite;
    animation-delay: 1s;
}

.experience-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}


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

.experience-header h3 {
    color: var(--dark-green);
    font-size: 1.3rem;
}

.period {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.company {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.location {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.experience-details p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Professional Development Section */
.professional-development {
    background: var(--light-green);
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.award-card {
    background: var(--white);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: floatCard 6s ease-in-out infinite;
    animation-delay: 2s;
}

.award-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.award-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.award-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.award-icon i {
    font-size: 2.5rem;
    color: var(--white);
}

.award-card h3 {
    color: var(--dark-green);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.award-type {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.project-name,
.institution {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Publications Section */
.publications {
    background: var(--white);
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.publication-card {
    background: var(--white);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-top: 5px solid var(--accent-color);
}

.publication-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.publication-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all 0.3s ease;
    cursor: pointer;
}

.publication-link:hover {
    text-decoration: none;
    color: inherit;
}

.card-hover-indicator {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.publication-link:hover .card-hover-indicator {
    opacity: 1;
    transform: translateY(0);
}

.card-hover-indicator i {
    font-size: 0.7rem;
}

.conference-note {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: var(--accent-color);
    color: var(--white);
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.conference-note i {
    font-size: 0.7rem;
}

.publication-header h3 {
    color: var(--dark-green);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    line-height: 1.4;
}

.authors {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: block;
}

.conference,
.journal {
    color: var(--text-light);
    margin-bottom: 0.5rem;
    font-style: italic;
}

.doi {
    color: var(--accent-color);
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    word-break: break-all;
}

.scopus {
    background: var(--primary-color);
    color: var(--white);
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-right: 1rem;
}

.year {
    background: var(--accent-color);
    color: var(--white);
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
}

.doi-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-secondary);
    color: var(--dark-green);
    text-decoration: none;
    padding: 10px 16px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    margin-top: 10px;
}

.doi-link:hover {
    background: var(--white);
    color: var(--primary-color);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.doi-link i {
    font-size: 0.8rem;
}

/* Contact Section */
.contact {
    background: var(--light-green);
}

.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 4rem;
}

.contact-info-section h3 {
    color: var(--dark-green);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.contact-info-section p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.contact-details .contact-item {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    /* Force vertical stacking for centered layout */
    align-items: center;
    /* Center horizontally */
    text-align: center;
    border: 1px solid transparent;
}

.contact-details .contact-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.contact-details .contact-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.contact-details .contact-item:hover i {
    transform: scale(1.1);
}

.contact-details .contact-item div {
    /* Reset default flex behavior if any from previous styles */
    width: 100%;
}

.contact-details .contact-item h4 {
    color: var(--dark-green);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.contact-details .contact-item p {
    color: var(--primary-color);
    font-weight: 600;
    margin: 0;
}

.social-links {
    margin-top: 2rem;
}

.social-links h4 {
    color: var(--dark-green);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-decoration: none;
    color: var(--white);
    font-size: 1.2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    z-index: -1;
}

.social-link:hover::before {
    transform: scale(1.1);
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.social-link.facebook {
    background: #1877f2;
}

.social-link.facebook:hover {
    background: #0d6efd;
}

.social-link.linkedin {
    background: #0077b5;
}

.social-link.linkedin:hover {
    background: #005885;
}

.social-link.github {
    background: #333;
}

.social-link.github:hover {
    background: #000;
}

.contact-form-container {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

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

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: transparent;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(45, 90, 39, 0.1);
}

.form-group label {
    position: absolute;
    left: 20px;
    top: 15px;
    color: var(--text-light);
    transition: all 0.3s ease;
    pointer-events: none;
    background: var(--white);
    padding: 0 5px;
}

.form-group input:focus+label,
.form-group textarea:focus+label,
.form-group input:valid+label,
.form-group textarea:valid+label {
    top: -10px;
    left: 15px;
    font-size: 0.8rem;
    color: var(--primary-color);
    font-weight: 600;
}

.contact-form .btn {
    width: 100%;
    justify-content: center;
    padding: 15px;
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background: var(--dark-green);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo i {
    color: var(--accent-color);
}

.footer p {
    color: #bdc3c7;
}

.footer i.fa-heart {
    color: #e74c3c;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }
}

/* Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-dot {
        left: 20px;
    }

    .timeline-content {
        width: calc(100% - 50px);
        left: 50px !important;
    }

    .experience-grid,
    .awards-grid,
    .publications-grid {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .profile-placeholder {
        width: 250px;
        height: 250px;
    }

    .profile-image {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 50%;
    }
}

/* Smooth scrolling for older browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}