:root {
    --primary-color: #6366f1;
    --secondary-color: #ec4899;
    --bg-dark: #0f172a;
    --bg-darker: #0a0e27;
    --text-light: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: #1e293b;
    --accent-color: #f1a208;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

body.light-mode {
    --bg-dark: #f8fafc;
    --bg-darker: #f1f5f9;
    --text-light: #1e293b;
    --text-muted: #475569;
    --border-color: #e2e8f0;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

body.light-mode .navbar {
    background: rgba(248, 250, 252, 0.95);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
}

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

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

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

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

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

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    transition: color 0.3s ease, transform 0.3s ease;
}

.theme-toggle:hover {
    color: var(--primary-color);
    transform: rotate(20deg);
}

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

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

/* Hero Section */
.hero {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    padding: 3rem 0;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content > p {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    margin-top: 2rem;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.profile-circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: var(--bg-dark);
    animation: float 3s ease-in-out infinite;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease backwards;
}

.fade-in-delay-1 {
    animation: fadeIn 0.8s ease 0.2s backwards;
}

.fade-in-delay-2 {
    animation: fadeIn 0.8s ease 0.4s backwards;
}

.fade-in-delay-3 {
    animation: fadeIn 0.8s ease 0.6s backwards;
}

.fade-in-delay-4 {
    animation: fadeIn 0.8s ease 0.8s backwards;
}

/* Sections */
.section {
    padding: 5rem 0;
    background: var(--bg-dark);
}

.section:nth-child(even) {
    background: var(--bg-darker);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
    align-items: center;
}

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

.skills h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
}

.about-stats {
    display: grid;
    gap: 2rem;
}

.stat-item {
    padding: 1.5rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-item:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.15);
}

.stat-item h4 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Experience Section */
.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 1px;
}

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

.timeline-item:nth-child(odd) {
    margin-left: 0;
    margin-right: 50%;
    padding-right: 3rem;
    text-align: right;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    margin-right: 0;
    padding-left: 3rem;
    text-align: left;
}

.timeline-marker {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border: 4px solid var(--bg-dark);
    border-radius: 50%;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    z-index: 10;
}

.timeline-content {
    background: rgba(99, 102, 241, 0.1);
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.timeline-content .company {
    color: var(--primary-color);
    font-weight: 600;
}

.timeline-content .date {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

/* Education Section */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.education-card {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}

.education-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.2);
}

.education-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.education-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.education-card .institution {
    color: var(--primary-color);
    font-weight: 600;
}

.education-card .date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.project-card {
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.2);
    transform: translateY(-5px);
}

.project-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(236, 72, 153, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

.project-placeholder {
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.5;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.project-content > p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.project-tags span {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: var(--secondary-color);
}

/* Contact Section */
.contact-section {
    text-align: center;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: left;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    width: 30px;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--secondary-color);
}

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

.form-group {
    width: 100%;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-light);
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

/* Footer */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-content h4 {
    margin-bottom: 1rem;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: 1rem;
    font-size: 1.3rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.footer hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2rem 0;
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background: var(--bg-dark);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        gap: 1rem;
        padding: 2rem 0;
        border-bottom: 1px solid var(--border-color);
    }

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

    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .profile-circle {
        width: 200px;
        height: 200px;
        font-size: 5rem;
    }

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

    .timeline::before {
        left: 0;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        margin: 0;
        padding-left: 3rem;
        text-align: left;
    }

    .timeline-marker {
        left: 0;
    }

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

    .section-title {
        font-size: 1.8rem;
    }

    .hero-content > p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .profile-circle {
        width: 150px;
        height: 150px;
        font-size: 3.5rem;
    }

    .skill-items {
        justify-content: center;
    }

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

    .form-group input,
    .form-group textarea {
        padding: 0.8rem;
    }
}