/* Neumorphic Design System - Soft UI */
:root {
    /* Light Mode Variables */
    --bg-primary: #e0e5ec;
    --bg-secondary: #f0f4f8;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --accent: #667eea;
    --accent-light: #764ba2;
    --shadow-sm: 2px 2px 5px #b8b9be, -3px -3px 7px #ffffff;
    --shadow-md: 4px 4px 10px #b8b9be, -5px -5px 15px #ffffff;
    --shadow-lg: 8px 8px 20px #b8b9be, -10px -10px 30px #ffffff;
    --shadow-inset: inset 2px 2px 5px #b8b9be, inset -3px -3px 7px #ffffff;
    --nav-bg: linear-gradient(135deg, #e0e5ec 0%, #f0f4f8 100%);
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --accent: #805ad5;
    --accent-light: #b794f4;
    --shadow-sm: 2px 2px 5px #121720, -2px -2px 5px #222b3a;
    --shadow-md: 4px 4px 10px #121720, -4px -4px 10px #222b3a;
    --shadow-lg: 8px 8px 20px #121720, -8px -8px 20px #222b3a;
    --shadow-inset: inset 2px 2px 5px #121720, inset -2px -2px 5px #222b3a;
    --nav-bg: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

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

/* Navigation */
.navbar {
    background: var(--nav-bg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    padding: 0.6rem 0.8rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-link:hover {
    color: var(--accent);
    box-shadow: var(--shadow-sm);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 5px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Hero Section */
.hero {
    padding: 120px 20px;
    text-align: center;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-icon-wrapper {
    margin-bottom: 2rem;
}

.hero-main-icon {
    font-size: 5.5rem;
    color: var(--accent);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--accent);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 14px 35px;
    border-radius: 15px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--bg-primary);
    color: var(--accent);
    box-shadow: var(--shadow-sm);
}

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

/* Sections */
section {
    padding: 100px 20px;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 4rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

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

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

.about-text p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-item {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.info-label {
    font-weight: 700;
    color: var(--accent);
    font-size: 0.85rem;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-value {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* Education Section */
.education {
    background: var(--bg-primary);
}

.education-content {
    max-width: 900px;
    margin: 0 auto;
}

.education-item {
    padding: 2.5rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

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

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.education-degree {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.education-year {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 700;
}

.education-institution {
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.education-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Skills Section */
.skills {
    background: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.skill-card {
    padding: 2.5rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.skill-card i {
    font-size: 3.5rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.skill-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
}

.skill-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Contact Section */
.contact {
    background: var(--bg-primary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    margin-top: 3rem;
}

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

.contact-method {
    padding: 1.8rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

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

.method-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.method-text h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.method-text p, .method-text a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
}

.contact-form-side {
    padding: 3rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--bg-primary);
    border: none;
    border-radius: 15px;
    outline: none;
    font-family: inherit;
    color: var(--text-primary);
    box-shadow: var(--shadow-inset);
    transition: all 0.3s ease;
    font-size: 1rem;
}

.form-group input:focus, .form-group textarea:focus {
    box-shadow: inset 1px 1px 3px #b8b9be, inset -1px -1px 3px #ffffff, 0 0 0 3px var(--accent);
}

.form-submit {
    width: 100%;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: white;
    border: none;
    font-size: 1.05rem;
    font-weight: 700;
    padding: 1rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    color: white;
    padding: 5rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-brand p {
    opacity: 0.7;
    font-weight: 500;
}

.footer-links h4, .footer-social h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: 0.3s;
    font-weight: 500;
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: 0.3s;
    font-size: 1.2rem;
}

.social-icon:hover {
    background: var(--accent);
    transform: translateY(-5px);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 992px) {
    .about-content, .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        width: 100%;
        text-align: center;
        gap: 0.5rem;
        box-shadow: var(--shadow-md);
        padding: 1.5rem 1rem;
        border-top: 1px solid rgba(0,0,0,0.05);
    }
    .nav-menu.active {
        display: flex;
    }
    .hamburger {
        display: flex;
    }
    .nav-brand {
        font-size: 1.2rem;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .section-title {
        font-size: 2.2rem;
    }
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Academic Interests Icons & Styling Enhancement */
.interests-container .skill-card i {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.interests-container .skill-card h3 {
    font-size: 1.1rem;
    margin-top: 1rem;
}

/* Responsive adjustments for the new sections */
@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}