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

:root {
    --primary-blue: #3b82f6;
    --primary-orange: #f97316;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --card-bg: #1e293b;
    --text-light: #e2e8f0;
    --text-dim: #94a3b8;
    --gradient-start: #1e40af;
    --gradient-end: #7c3aed;
    --accent-cyan: #06b6d4;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--dark-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-orange);
    z-index: 1001;
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

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

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

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

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

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

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--darker-bg);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--darker-bg);
    opacity: 0.8;
}

.hero-background::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-light);
    padding: 2rem;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    animation: fadeInUp 1s ease;
}

.highlight {
    color: var(--primary-orange);
}

.hero-role {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-tagline {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    min-height: 2rem;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

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

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--primary-orange);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
    animation: fadeInUp 1s ease 0.6s backwards;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.6);
}

section {
    padding: 5rem 0;
}

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

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

.about {
    background: var(--dark-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.about-image {
    display: flex;
    justify-content: center;
}

.profile-placeholder {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-orange));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.profile-placeholder svg {
    width: 150px;
    height: 150px;
}

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

.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-blue);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 5px;
    width: 12px;
    height: 12px;
    background: var(--primary-orange);
    border-radius: 50%;
    border: 3px solid var(--dark-bg);
    box-shadow: 0 0 0 3px var(--primary-blue);
}

.timeline-year {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.timeline-content h3 {
    color: var(--text-light);
}

.timeline-content p {
    color: var(--text-dim);
}

.skills {
    background: var(--darker-bg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
    border-color: var(--primary-blue);
}

.category-title {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--primary-blue);
}

.skill-item {
    margin-bottom: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.skill-name {
    font-weight: 600;
    color: var(--text-light);
}

.skill-percentage {
    color: var(--primary-orange);
    font-weight: 600;
}

.skill-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 10px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(to right, var(--primary-blue), var(--primary-orange));
    border-radius: 10px;
    width: 0;
    transition: width 1s ease;
}

.projects {
    background: var(--dark-bg);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    border: 2px solid rgba(249, 115, 22, 0.2);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(249, 115, 22, 0.4);
    border-color: var(--primary-orange);
}

.project-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-orange));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.project-icon svg {
    width: 35px;
    height: 35px;
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.project-description {
    color: var(--text-dim);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-link {
    display: inline-block;
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.project-link::after {
    content: ' →';
    transition: transform 0.3s ease;
    display: inline-block;
}

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

.project-link:hover::after {
    transform: translateX(5px);
}

.contact {
    background: var(--darker-bg);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

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

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--card-bg);
    background: var(--card-bg);
    color: var(--text-light);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, background 0.3s ease;
}

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

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

.form-group textarea {
    resize: vertical;
}

.error-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
}

.error-message.show {
    display: block;
}

.submit-button {
    padding: 1rem 2rem;
    background: linear-gradient(to right, var(--primary-blue), var(--primary-orange));
    color: var(--white);
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

.form-success {
    background: #10b981;
    color: var(--white);
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    display: none;
}

.form-success.show {
    display: block;
}

.footer {
    background: var(--dark-bg);
    color: var(--white);
    padding: 3rem 0;
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.social-link {
    width: 45px;
    height: 45px;
    background: var(--card-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: all 0.3s ease;
    border: 2px solid rgba(249, 115, 22, 0.3);
}

.social-link svg {
    width: 24px;
    height: 24px;
}

.social-link:hover {
    background: var(--primary-orange);
    transform: translateY(-5px);
}

.footer-text {
    color: var(--text-dim);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-orange);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.6);
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--dark-bg);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.5);
        padding: 2rem 0;
        gap: 0;
    }

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

    .nav-menu li {
        margin: 1.5rem 0;
    }

    .nav-link {
        font-size: 1.2rem;
    }

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

    .hero-role {
        font-size: 1.5rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-item::before {
        left: -2rem;
    }

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

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

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

    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
    }
}

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

    .profile-placeholder {
        width: 200px;
        height: 200px;
    }

    .profile-placeholder svg {
        width: 120px;
        height: 120px;
    }

    .cta-button {
        padding: 0.8rem 2rem;
        font-size: 0.9rem;
    }
}