:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --bg-card-hover: #222230;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --border-color: #2a2a3a;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

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

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

/* Navbar */
.navbar {
    background-color: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-icon {
    background: var(--gradient-primary);
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.85rem;
}

.brand-text {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 60px;
    background: var(--bg-primary);
    position: relative;
}

.hero-greeting {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.hero-name {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.hero-description {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 500px;
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn-primary-custom {
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    color: white;
}

.btn-outline-custom {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-outline-custom:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.scroll-indicator {
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 2px;
}

.hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero-image {
    width: 100%;
    max-width: 350px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* Section Styles */
.section-header {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* About Section */
.about-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.about-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    height: 100%;
    border: 1px solid var(--border-color);
}

.about-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.about-card h3 i {
    color: var(--accent-primary);
}

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

.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

.about-card h4 {
    font-size: 1rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.philosophy-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.timeline {
    position: relative;
}

.timeline-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 7px;
    top: 24px;
    width: 1px;
    height: calc(100% - 10px);
    background: var(--border-color);
}

.timeline-dot {
    width: 15px;
    height: 15px;
    min-width: 15px;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin-top: 5px;
}

.timeline-content {
    flex: 1;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-header h5 {
    font-size: 1rem;
    margin: 0;
}

.timeline-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.timeline-company {
    color: var(--accent-primary);
    font-size: 0.9rem;
    margin: 0.25rem 0;
}

.timeline-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
}

/* Portfolio Section */
.portfolio-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 3rem;
}

.filter-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.6rem 1.25rem;
    border-radius: 25px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.portfolio-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 1.5rem;
}

.portfolio-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.portfolio-image {
    position: relative;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.portfolio-card:hover .portfolio-image img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: rgba(99, 102, 241, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.portfolio-overlay i {
    font-size: 2.5rem;
    color: white;
}

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

.portfolio-info {
    padding: 1.25rem;
}

.portfolio-info h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.portfolio-info p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

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

.portfolio-tags span {
    background: var(--bg-secondary);
    color: var(--text-muted);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.portfolio-cta {
    color: var(--text-secondary);
    margin-top: 2rem;
}

/* Services Section */
.services-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.service-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    height: 100%;
    transition: transform 0.3s ease, border-color 0.3s ease;
    margin-bottom: 1.5rem;
}

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

.service-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-secondary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.service-icon i {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.service-card h4 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.service-card > p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.service-card h6 {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.service-card ul {
    list-style: none;
    padding: 0;
    margin-bottom: 1rem;
}

.service-card ul li {
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding: 0.25rem 0;
    padding-left: 1rem;
    position: relative;
}

.service-card ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

.service-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease;
}

.service-link:hover {
    gap: 0.75rem;
    color: var(--accent-secondary);
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cta-section p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Contact Section */
.contact-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    width: 45px;
    height: 45px;
    min-width: 45px;
    background: rgba(99, 102, 241, 0.15);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon i {
    font-size: 1.25rem;
    color: var(--accent-primary);
}

.contact-details h5 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.social-links {
    margin-top: 2rem;
}

.social-links h5 {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

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

.contact-form-wrapper {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.contact-form-wrapper h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-control {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.85rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:focus {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    color: var(--text-primary);
}

textarea.form-control {
    resize: none;
}

/* Footer */
.footer {
    padding: 60px 0 30px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.footer-nav {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.footer-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}

.back-to-top-text {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.back-to-top-text:hover {
    color: var(--accent-primary);
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

/* Responsive */
@media (max-width: 991px) {
    .hero-name {
        font-size: 3.5rem;
    }
    
    .hero-section {
        text-align: center;
    }
    
    .hero-description {
        margin: 0 auto 2rem;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image-wrapper {
        margin-top: 3rem;
    }
    
    .scroll-indicator {
        display: block;
        text-align: center;
    }
}

@media (max-width: 767px) {
    .hero-name {
        font-size: 2.5rem;
    }
    
    .hero-title {
        font-size: 1.25rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .stat-item {
        text-align: center;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .portfolio-filters {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

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

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}