:root {
    --primary: #00D4FF;
    --primary-dark: #00A3CC;
    --accent: #FF007A;
    --accent-dark: #CC0061;
    --dark: #121212;
    --dark-light: #1E1E1E;
    --light: #E0E0E0;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --font-body: 'Roboto', sans-serif;
    --font-heading: 'Orbitron', sans-serif;
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --border-radius: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--dark);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 120px 0;
    position: relative;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
}

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

.bg-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.2;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -150px;
    right: -150px;
    animation: float 10s ease-in-out infinite;
}

.shape-2 {
    width: 350px;
    height: 350px;
    background: var(--accent);
    bottom: -80px;
    left: -80px;
    animation: float 7s ease-in-out infinite reverse;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: var(--primary-dark);
    top: 40%;
    left: 15%;
    animation: float 9s ease-in-out infinite 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
}

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

.logo {
    font-size: 32px;
    font-family: var(--font-heading);
    color: var(--primary);
    background: var(--glass);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    font-size: 18px;
    font-weight: 500;
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    background: var(--accent);
    bottom: -5px;
    left: 0;
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 12px;
}

.hamburger span {
    display: block;
    width: 30px;
    height: 3px;
    background: var(--light);
    margin: 6px 0;
    transition: var(--transition);
}

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: flex;
    gap: 60px;
    align-items: center;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 64px;
    color: var(--primary);
    margin-bottom: 16px;
}

.hero-subtitle {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 22px;
    color: var(--light);
}

.hero-subtitle i {
    color: var(--accent);
}

.accent-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(to right, var(--accent), transparent);
}

.hero-text {
    font-size: 18px;
    margin: 20px 0 40px;
    color: var(--light);
}

.hero-cta {
    display: flex;
    gap: 24px;
}

.btn {
    padding: 16px 32px;
    border-radius: var(--border-radius);
    font-size: 18px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    color: var(--dark);
    border: none;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: var(--dark);
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    color: var(--accent);
    font-family: var(--font-heading);
}

.stat-label {
    font-size: 16px;
    color: var(--light);
}

.hero-visual {
    flex: 1;
    height: 400px;
    position: relative;
}

.data-flow-animation {
    width: 100%;
    height: 100%;
}

.data-node {
    position: absolute;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary);
    animation: pulse 2.5s infinite ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.node-1 { top: 15%; left: 25%; }
.node-2 { top: 55%; left: 45%; background: var(--accent); }
.node-3 { top: 35%; left: 65%; background: var(--primary-dark); }

.data-connection {
    position: absolute;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    transform-origin: left;
    animation: drawLine 2s forwards;
}

.conn-1 { top: 20%; left: 27%; transform: rotate(20deg); }
.conn-2 { top: 40%; left: 47%; transform: rotate(-10deg); }
.conn-3 { top: 60%; left: 27%; transform: rotate(-25deg); }

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.3); }
}

@keyframes drawLine {
    to { width: 120px; }
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 48px;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.section-divider {
    width: 100px;
    height: 4px;
    background: linear-gradient(to right, var(--accent), transparent);
    margin: 20px auto;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.skill-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: var(--transition);
}

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

.card-icon {
    width: 64px;
    height: 64px;
    background: var(--glass);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 20px;
}

.skill-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.skill-list {
    list-style: none;
}

.skill-list li {
    padding-left: 30px;
    position: relative;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding-bottom: 60px; /* Ensure space for the last item */
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50px;
    height: 100%; /* Ensure full height */
    width: 3px;
    background: var(--primary);
}

.timeline-item {
    margin-bottom: 60px;
    padding-left: 120px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 45px;
    top: 10px;
    width: 12px;
    height: 12px;
    background: var(--accent);
    border: 3px solid var(--primary);
    border-radius: 50%;
    z-index: 1;
}

.timeline-date {

    left: 0;
    top: 0;
    font-size: 18px;
    color: var(--accent);
    text-align: right;
}

.timeline-content {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: var(--transition);
    position: relative;
    z-index: 0;
}

.timeline-content:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.timeline-content h3 {
    font-size: 24px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.timeline-content ul {
    list-style: none;
}

.timeline-content li {
    padding-left: 30px;
    position: relative;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.timeline-content li::before {
    content: none;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.project-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: var(--transition);
}

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

.project-header h3 {
    font-size: 22px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.project-meta span {
    font-size: 14px;
    padding: 6px 12px;
    background: var(--glass);
    border-radius: 20px;
    color: var(--primary);
}

.project-content p {
    margin-bottom: 16px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.project-tech span {
    font-size: 14px;
    padding: 6px 12px;
    background: var(--glass);
    color: var(--accent);
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
}

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

.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.cert-item {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

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

.cert-icon {
    width: 56px;
    height: 56px;
    background: var(--glass);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary);
}

.cert-item h3 {
    font-size: 20px;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-info {
    padding-right: 32px;
}

.info-items {
    margin-top: 32px;
}

.info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.info-icon {
    width: 48px;
    height: 48px;
    background: var(--glass);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
}

.info-content h4 {
    font-size: 20px;
    margin-bottom: 8px;
}

.info-content a, .info-content span {
    color: var(--light);
}

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

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 32px;
}

.social-link {
    width: 48px;
    height: 48px;
    background: var(--glass);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

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

.contact-form {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 32px;
}

.form-group {
    position: relative;
    margin-bottom: 24px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 12px 12px 40px;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    color: var(--light);
    font-size: 16px;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary);
    outline: none;
}

.form-group label {
    position: absolute;
    top: 12px;
    left: 40px;
    color: var(--light);
    font-size: 16px;
    pointer-events: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
    top: -8px;
    left: 8px;
    font-size: 12px;
    background: var(--dark-light);
    padding: 0 4px;
    color: var(--primary);
}

.form-message {
    margin-top: 16px;
    padding: 12px;
    border-radius: var(--border-radius);
    text-align: center;
    display: none;
}

.form-message.success {
    background: var(--glass);
    color: var(--accent);
    border: 1px solid var(--accent);
}

.form-message.error {
    background: var(--glass);
    color: #FF5555;
    border: 1px solid #FF5555;
}

.footer {
    background: var(--dark-light);
    padding: 60px 0 32px;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links h4, .footer-legal h4 {
    font-size: 20px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.footer-links li, .footer-legal li {
    margin-bottom: 12px;
}

.footer-links a, .footer-legal a {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover, .footer-legal a:hover {
    color: var(--accent);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--glass-border);
}

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

@media (max-width: 1024px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-cta, .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .contact-info {
        padding-right: 0;
    }

    .timeline {
        max-width: 100%;
    }

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

    .timeline-item {
        padding-left: 80px;
    }

    .timeline-item::before {
        left: 15px;
    }

    .timeline-date {
        left: -60px;
        width: 50px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--dark-light);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }

    .nav-links.active {
        right: 0;
    }

    .hamburger {
        display: block;
    }

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

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -7px);
    }

    .hero-title {
        font-size: 48px;
    }

    .section-title {
        font-size: 36px;
    }
}

@media (max-width: 80px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-text {
        font-size: 16px;
    }

    .section-title {
        font-size: 32px;
    }

    .project-grid, .certs-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        padding-left: 60px;
    }

    .timeline-item::before {
        left: 10px;
    }

    .timeline-date {
        left: -50px;
        font-size: 16px;
    }
}