/* Global Styles */
:root {
    --primary-color: #6c63ff;
    --secondary-color: #4db5ff;
    --dark-bg: #121212;
    --darker-bg: #0a0a0a;
    --card-bg: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-tertiary: #808080;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    color: var(--text-primary);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 5px;
}

section {
    padding: 80px 0;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.primary {
    background: var(--primary-color);
    color: var(--text-primary);
}

.primary:hover {
    background: #5a52e0;
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

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

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

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
}

.nav-links {
    display: flex;
    justify-content: space-around;
    width: 60%;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 5px;
    transition: var(--transition);
}

/* Hero Section */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 60px;
    background-color: var(--darker-bg);
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(108, 99, 255, 0.1), transparent 50%);
    z-index: 0;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-text {
    flex: 1;
    padding-right: 30px;
}

.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.hero-text h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid var(--primary-color);
    box-shadow: var(--box-shadow);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* About Section */
#about {
    background-color: var(--dark-bg);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Education Section */
#education {
    background-color: var(--darker-bg);
}

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

.timeline::after {
    content: '';
    position: absolute;
    width: 4px;
    background-color: var(--primary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
    margin-bottom: 30px;
}

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

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-dot {
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: var(--primary-color);
    border-radius: 50%;
    z-index: 1;
    top: 15px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -10px;
}

.timeline-content {
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.timeline-date {
    color: var(--text-tertiary);
    font-style: italic;
    margin-bottom: 15px;
}

/* Experience Section */
#experience {
    background-color: var(--dark-bg);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.experience-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

.experience-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.experience-header h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.company {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 5px;
}

.date {
    color: var(--text-tertiary);
    font-style: italic;
}

.experience-body {
    padding: 20px;
}

.experience-body ul li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
    color: var(--text-secondary);
}

.experience-body ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Projects Section */
#projects {
    background-color: var(--darker-bg);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    cursor: pointer;
    border: 2px solid transparent;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
    border-color: var(--primary-color);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-content {
    padding: 20px;
    position: relative;
}

.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(108, 99, 255, 0.05);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
    z-index: 1;
}

.project-card:hover::after {
    opacity: 1;
}

.project-content h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.project-caption {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 15px;
    font-style: italic;
}

.project-type {
    color: var(--text-tertiary);
    font-style: italic;
    margin-bottom: 15px;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.project-tags span {
    background-color: rgba(108, 99, 255, 0.2);
    color: var(--primary-color);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
}

/* Skills Section */
#skills {
    background-color: var(--dark-bg);
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.skills-category h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
}

.skills-grid {
    display: grid;
    gap: 20px;
}

.skill-item {
    margin-bottom: 15px;
}

.skill-name {
    margin-bottom: 15px;
    color: var(--text-secondary);
    padding: 10px 15px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    border: 2px solid transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-name::before {
    content: '';
}

.skill-name::after {
    content: 'View Details →';
    font-size: 0.8rem;
    color: var(--primary-color);
    font-weight: 500;
    opacity: 0;
    transition: var(--transition);
}

.skill-name:hover::after {
    opacity: 1;
}

.skill-name:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
    background-color: rgba(108, 99, 255, 0.1);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.skill-name::after {
    content: '→';
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition: var(--transition);
}

.skill-name:hover::after {
    opacity: 1;
    right: 10px;
}

/* Contact Section */
#contact {
    background-color: var(--darker-bg);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-secondary);
}

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link[href*="linkedin"] {
    position: relative;
    overflow: hidden;
}

.social-link[href*="linkedin"]:hover {
    background-color: #0077b5;
    box-shadow: 0 0 15px #0077b5;
}

.social-link[href*="linkedin"]:hover::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0,119,181,0.2) 0%, rgba(0,119,181,0) 70%);
    animation: linkedin-glow 1.5s ease-in-out infinite;
}

@keyframes linkedin-glow {
    0% { transform: scale(0.8); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 0.5; }
    100% { transform: scale(0.8); opacity: 0.8; }
}

.social-link:hover {
    background-color: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-3px);
}

.contact-form {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background-color: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Footer */
footer {
    background-color: var(--darker-bg);
    padding: 30px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-tertiary);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Responsive Design */
@media screen and (max-width: 1024px) {
    .nav-links {
        width: 70%;
    }
    
    .hero-content {
        flex-direction: column-reverse;
        text-align: center;
    }
    
    .hero-text {
        padding-right: 0;
        margin-top: 30px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-dot {
        left: 21px;
        right: auto;
    }
}

@media screen and (max-width: 768px) {
    .burger {
        display: block;
    }
    
    .nav-links {
        position: absolute;
        right: 0;
        top: 80px;
        height: calc(100vh - 80px);
        background-color: var(--darker-bg);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: space-around;
        width: 50%;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
        z-index: 999;
    }
    
    .nav-active {
        transform: translateX(0%);
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media screen and (max-width: 480px) {
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-text h2 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-links {
        width: 70%;
    }
    
    .hero-image img {
        width: 250px;
        height: 250px;
    }
    
    .experience-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* Animation Classes */
@keyframes navLinkFade {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toggle .line1 {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.toggle .line2 {
    opacity: 0;
}

.toggle .line3 {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Skill item with subtopics */
.skill-item.has-subtopics {
    position: relative;
}

.skill-item .subtopics {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 15px;
    width: 220px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    transform: translateY(10px);
}

.skill-item.has-subtopics:hover .subtopics {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.skill-item .subtopics ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.skill-item .subtopics li {
    padding: 5px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.skill-item .subtopics li:not(:last-child) {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}