:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0e14;
    --bg-card: #0d1117;
    --accent-green: #00d4a1;
    --accent-green-dark: #00a87e;
    --text-primary: #ffffff;
    --text-secondary: #8b949e;
    --border-color: #1f2937;
    --shadow: 0 10px 40px rgba(0, 212, 161, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Global Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ===== Animated Grid Background ===== */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: -2;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(30px, 30px); }
}

/* ===== Gradient Orbs ===== */
.gradient-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    z-index: -1;
    pointer-events: none;
    animation: float 25s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-green) 0%, transparent 70%);
    top: -200px;
    right: -200px;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #7c3aed 0%, transparent 70%);
    bottom: -250px;
    left: -250px;
    animation-delay: -10s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #00d9ff 0%, transparent 70%);
    top: 50%;
    left: 50%;
    animation-delay: -15s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1) rotate(0deg); }
    33% { transform: translate(100px, -100px) scale(1.1) rotate(120deg); }
    66% { transform: translate(-100px, 100px) scale(0.9) rotate(240deg); }
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(13, 17, 23, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 12px 30px;
    z-index: 1000;
    animation: slideDown 0.6s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translate(-50%, -20px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

.nav-menu {
    display: flex;
    gap: 30px;
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--accent-green);
}

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

/* ===== Hero Section ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 0 80px;
}

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

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

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-green) 0%, #00d9ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { filter: hue-rotate(0deg); }
    50% { filter: hue-rotate(20deg); }
}

.hero-subtitle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.badge {
    background: rgba(0, 212, 161, 0.1);
    color: var(--accent-green);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 161, 0.2);
}

.hero-subtitle i {
    color: var(--accent-green);
    font-size: 16px;
}

.hero-description {
    max-width: 700px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.8s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: var(--accent-green-dark);
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 212, 161, 0.4);
}

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

.btn-secondary:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
    transform: translateY(-3px);
}

/* ===== Social Section ===== */
.social-section {
    animation: fadeInUp 0.8s ease 1s backwards;
}

.social-label {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 14px;
}

.social-links {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.social-link {
    width: 50px;
    height: 50px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.social-link::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -35px;
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.social-link:hover::before {
    opacity: 1;
}

.social-link:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
    transform: translateY(-5px);
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 15px;
}

.section-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-green), #00d9ff);
    margin: 0 auto;
    border-radius: 2px;
    animation: expandWidth 0.8s ease;
}

@keyframes expandWidth {
    from { width: 0; }
    to { width: 80px; }
}

/* ===== Services Section ===== */
.services-section {
    padding: 100px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 161, 0.05), transparent);
    transition: left 0.5s;
}

.service-card:hover::before {
    left: 100%;
}

.service-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.service-icons {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.service-icons img {
    width: 40px;
    height: 40px;
    padding: 8px;
    background: rgba(0, 212, 161, 0.1);
    border-radius: 8px;
    transition: transform 0.3s;
}

.service-card:hover .service-icons img {
    transform: rotateY(360deg);
}

.service-icons .invert-logo {
    filter: brightness(0) invert(1);
}

.service-card h3 {
    color: var(--accent-green);
    font-size: 24px;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Experience Section ===== */
.experience-section {
    padding: 100px 0;
}

.timeline {
    position: relative;
    padding-left: 50px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    height: 100%;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-green), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

.timeline-dot {
    position: absolute;
    left: -42px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-green);
    border: 3px solid var(--bg-primary);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 212, 161, 0.7); }
    50% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(0, 212, 161, 0); }
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--accent-green);
    transform: translateX(5px);
}

.timeline-date {
    color: var(--accent-green);
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 10px;
    display: inline-block;
}

.timeline-content h3 {
    font-size: 24px;
    margin-bottom: 5px;
}

.company {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 20px;
}

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

.timeline-content li {
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
}

.timeline-content li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-green);
    font-size: 18px;
}

/* ===== Skills Section ===== */
.skills-section {
    padding: 100px 0;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--accent-green);
    transform: scale(1.05);
    box-shadow: var(--shadow);
}

.skill-category h3 {
    font-size: 20px;
    margin-bottom: 25px;
    color: var(--text-primary);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: transform 0.3s;
}

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

.skill-item img {
    width: 48px;
    height: 48px;
    transition: transform 0.3s;
}

.skill-item:hover img {
    transform: rotateY(360deg);
}

.skill-item .invert-logo {
    filter: brightness(0) invert(1);
}

.skill-item span {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ===== Projects Section ===== */
.projects-section {
    padding: 100px 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.project-preview {
    height: 200px;
    background: linear-gradient(135deg, rgba(0, 212, 161, 0.1) 0%, rgba(0, 212, 161, 0.05) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-icon {
    font-size: 64px;
    color: var(--accent-green);
    opacity: 0.6;
    transition: var(--transition);
}

.project-card:hover .project-icon {
    transform: scale(1.2) rotate(10deg);
    opacity: 0.8;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 212, 161, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    opacity: 0;
    transition: opacity 0.3s;
}

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

.project-content {
    padding: 25px;
}

.project-content h3 {
    font-size: 22px;
    margin-bottom: 10px;
}

.project-badge {
    display: inline-block;
    background: rgba(0, 212, 161, 0.1);
    color: var(--accent-green);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
}

.project-content p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tech-stack span {
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    border: 1px solid var(--border-color);
}

.project-links {
    display: flex;
    gap: 15px;
}

.project-links a {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.project-links a:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
    transform: scale(1.1);
}

/* ===== GitHub Section ===== */
.github-section {
    padding: 100px 0;
}

.github-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 60px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--accent-green);
    transform: scale(1.05);
}

.stat-value {
    font-size: 48px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-green), #00d9ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 10px;
}

/* ===== GitHub Calendar ===== */
.github-calendar-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 60px;
    text-align: center;
}

.github-calendar-wrapper h3 {
    color: var(--accent-green);
    font-size: 24px;
    margin-bottom: 10px;
}

.calendar-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 30px;
}

.github-calendar {
    overflow-x: auto;
    padding: 10px;
}

#github-chart {
    max-width: 100%;
    border-radius: 8px;
    transition: transform 0.3s;
}

#github-chart:hover {
    transform: scale(1.02);
}

/* ===== Coding Profiles ===== */
.coding-profiles {
    margin-bottom: 60px;
}

.coding-profiles h3 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
}

.profiles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.profile-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.profile-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.profile-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-icon svg,
.profile-icon i {
    width: 100%;
    height: 100%;
    font-size: 64px;
    color: var(--accent-green);
}

.profile-card h4 {
    font-size: 20px;
    margin-bottom: 10px;
}

.profile-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 10px;
}

.profile-stat {
    display: inline-block;
    background: rgba(0, 212, 161, 0.1);
    color: var(--accent-green);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

/* ===== Achievements ===== */
.achievements {
    text-align: center;
}

.achievements h3 {
    font-size: 28px;
    margin-bottom: 30px;
}

.achievements-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.achievement-badge {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px 25px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.achievement-badge:hover {
    border-color: var(--accent-green);
    transform: translateY(-3px);
}

.achievement-badge i {
    color: var(--accent-green);
    font-size: 24px;
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 100px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 900px;
    margin: 0 auto 60px;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 30px;
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--accent-green);
    transform: translateX(5px);
}

.contact-card i {
    font-size: 24px;
    color: var(--text-primary);
}

.availability {
    text-align: center;
    font-size: 28px;
    margin-top: 40px;
}

.availability .highlight {
    color: var(--accent-green);
    font-weight: 700;
}

/* ===== Footer ===== */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    text-align: center;
    color: var(--text-secondary);
}

footer i {
    color: #ff0000;
}

.footer-subtitle {
    margin-top: 10px;
    font-size: 14px;
}

/* ===== Scroll to Top ===== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.scroll-top:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
    transform: translateY(-5px);
}

/* ===== AOS Animations ===== */
[data-aos] {
    transition-duration: 0.8s;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .services-grid,
    .skills-grid,
    .projects-grid,
    .profiles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .github-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar {
        display: none;
    }
    
    .container {
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .services-grid,
    .skills-grid,
    .projects-grid,
    .github-stats,
    .profiles-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline-dot {
        left: -22px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .social-links {
        flex-wrap: wrap;
    }
}