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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --accent: #00ff88;
    --accent-secondary: #ff6b6b;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

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

/* Animated background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.1;
}

.floating-shapes {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--gradient);
    animation: float 20s infinite linear;
}

.floating-shapes:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; }
.floating-shapes:nth-child(2) { top: 60%; left: 80%; animation-delay: -5s; }
.floating-shapes:nth-child(3) { top: 80%; left: 20%; animation-delay: -10s; }

@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
    100% { transform: translateY(0px) rotate(360deg); }
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 2rem;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
}

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

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

/* Sections */
section {
    min-height: 100vh;
    padding: 6rem 2rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

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

.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    transform: translateY(0);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

/* About Section */
.about {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 4rem 2rem;
    margin: 2rem 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.profile-image {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: var(--gradient);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: 700;
    color: white;
    overflow: hidden; /* ensure circular crop */
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* Experience / Education / Achievements */
.experience-list,
.education-list,
.achievements-list {
    max-width: 900px;
    margin: 2rem auto 0;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.experience-item h3,
.education-item h3 {
    font-size: 1.2rem;
    color: var(--accent);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .5rem;
}
.role-duration {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.experience-item ul,
.achievements-list {
    list-style: none;
    padding: 0;
    margin: .75rem 0 0;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}
.experience-item li,
.achievements-list li {
    position: relative;
    padding-left: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.experience-item li::before,
.achievements-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: .6em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.education-item p {
    color: var(--text-secondary);
    margin-top: .35rem;
}

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

.skill-category {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
}

.skill-category h3 {
    color: var(--accent);
    margin-bottom: 1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-image {
    height: 200px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

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

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

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

/* Contact Section */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-form {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.form-group label {
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    background: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

.submit-btn {
    padding: 1rem 2rem;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
}

/* Footer */
footer {
    background: var(--bg-secondary);
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--accent);
}

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

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

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

    section {
        padding: 4rem 1rem 2rem;
    }

    .experience-item h3,
    .education-item h3 {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient);
    border-radius: 4px;
}