/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light theme colors */
    --primary-color: #3B82F6;
    --secondary-color: #10B981;
    --accent-color: #F59E0B;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --border-color: #E2E8F0;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 10px 25px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

[data-theme="dark"] {
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-muted: #64748B;
    --border-color: #334155;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-heavy: 0 10px 25px rgba(0, 0, 0, 0.4);
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* Particle Background */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

.particle:nth-child(odd) {
    animation-delay: -2s;
    animation-duration: 8s;
}

.particle:nth-child(even) {
    animation-delay: -4s;
    animation-duration: 10s;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    transform: translateY(0);
}

.navbar.scrolled {
    transform: translateY(0);
    box-shadow: var(--shadow-medium);
}

.navbar.hidden {
    transform: translateY(-100%);
}

[data-theme="dark"] .navbar {
    background-color: rgba(15, 23, 42, 0.9);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    position: relative;
    overflow: hidden;
}

.nav-logo::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.nav-logo:hover::before {
    left: 100%;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-8);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--spacing-2) 0;
    overflow: hidden;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.theme-toggle {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: 50%;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--primary-color);
    border-radius: 50%;
    transition: all var(--transition-normal);
    transform: translate(-50%, -50%);
    opacity: 0.1;
}

.theme-toggle:hover::before {
    width: 100%;
    height: 100%;
}

.theme-toggle:hover {
    transform: rotate(180deg) scale(1.1);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    padding: var(--spacing-2);
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-fast);
    transform-origin: center;
}

.hamburger:hover span {
    background-color: var(--primary-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: slideInLeft 0.8s ease-out;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-6);
    font-weight: 600;
    position: relative;
}

.typing-cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background-color: var(--primary-color);
    margin-left: 2px;
    animation: blink 1s infinite;
}

.hero-tagline {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
    max-width: 500px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.5s forwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.8s forwards;
}

.hero-visual {
    display: flex;
    justify-content: center;
    animation: slideInRight 0.8s ease-out;
    position: relative;
}

.hero-avatar {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
    opacity: 0.3;
}

.avatar-ring:nth-child(2) {
    width: 120%;
    height: 120%;
    border: 2px solid var(--secondary-color);
    animation: rotate 15s linear infinite reverse;
    opacity: 0.2;
}

.avatar-content {
    font-size: 120px;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-radius: 50%;
    width: 250px;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-heavy);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.avatar-content::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    animation: shimmer 3s ease-in-out infinite;
}

.avatar-content:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    font-size: 24px;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.floating-element:nth-child(2) { top: 20%; right: 10%; animation-delay: 1s; }
.floating-element:nth-child(3) { bottom: 20%; left: 15%; animation-delay: 2s; }
.floating-element:nth-child(4) { bottom: 10%; right: 20%; animation-delay: 3s; }

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-8);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.scroll-indicator:hover {
    transform: translateX(-50%) scale(1.1);
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
    transition: border-color var(--transition-fast);
}

.scroll-indicator:hover .mouse {
    border-color: var(--primary-color);
}

.wheel {
    width: 2px;
    height: 8px;
    background-color: var(--text-muted);
    border-radius: 1px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: mouseWheel 2s infinite;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #2563EB);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

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

.btn-secondary::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--primary-color);
    transition: width var(--transition-normal);
    z-index: -1;
}

.btn-secondary:hover::after {
    width: 100%;
}

.btn-secondary:hover {
    color: white;
    transform: translateY(-3px);
}

/* Sections */
section {
    padding: var(--spacing-20) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.section-header.animate {
    opacity: 1;
    transform: translateY(0);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.6s ease;
}

.section-header.animate .section-title::after {
    width: 60px;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

/* About Section */
.about {
    background-color: var(--bg-secondary);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.technologies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
}

.tech-category {
    background-color: var(--bg-primary);
    padding: var(--spacing-8);
    border-radius: 12px;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px) scale(0.9);
    position: relative;
    overflow: hidden;
}

.tech-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.05), transparent);
    transition: left 0.8s;
}

.tech-category:hover::before {
    left: 100%;
}

.tech-category.animate {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.tech-category:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.tech-category h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
    color: var(--primary-color);
    position: relative;
}

.tech-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--spacing-4);
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-4);
    border-radius: 8px;
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-color);
    border-radius: 8px;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--transition-fast);
}

.tech-item:hover::before {
    opacity: 0.1;
    transform: scale(1);
}

.tech-item:hover {
    transform: translateY(-4px);
}

.tech-icon {
    width: 40px;
    height: 40px;
    margin-bottom: var(--spacing-2);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    position: relative;
    z-index: 1;
}

.tech-item:hover .tech-icon {
    transform: scale(1.2) rotate(5deg);
}

.tech-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: center;
    position: relative;
    z-index: 1;
}

/* Projects Section */
.projects {
    position: relative;
}

.projects::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 70%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.project-card {
    background-color: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px) rotateX(10deg);
    position: relative;
}

.project-card.animate {
    opacity: 1;
    transform: translateY(0) rotateX(0deg);
}

.project-card:hover {
    transform: translateY(-12px) rotateX(-2deg);
    box-shadow: var(--shadow-heavy);
}

.project-image {
    width: 100%;
    height: 200px;
    background-color: var(--bg-tertiary);
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.project-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.8), rgba(16, 185, 129, 0.8));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(16, 185, 129, 0.9));
    opacity: 0;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(1.1);
}

.project-card:hover .project-overlay {
    opacity: 1;
    transform: scale(1);
}

.project-overlay span {
    color: white;
    font-weight: 600;
    font-size: var(--font-size-lg);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.project-card:hover .project-overlay span {
    transform: translateY(0);
}

.project-content {
    padding: var(--spacing-6);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
    transition: color var(--transition-fast);
}

.project-card:hover .project-title {
    color: var(--primary-color);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
    line-height: 1.5;
}

.project-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.tech-tag {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.tech-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    transition: left var(--transition-fast);
}

.tech-tag:hover::before {
    left: 0;
}

.tech-tag:hover {
    color: white;
    transform: translateY(-2px);
}

.project-links {
    display: flex;
    gap: var(--spacing-4);
}

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.project-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width var(--transition-fast);
}

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

.project-link:hover {
    color: var(--secondary-color);
    transform: translateX(4px);
}

/* Pricing Section */
.pricing {
    background-color: var(--bg-primary);
    position: relative;
}

.pricing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 75% 75%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.pricing-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-16);
    text-align: center;
}

/* Services Section */
.services-section {
    margin-bottom: var(--spacing-16);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.service-card {
    background-color: var(--bg-secondary);
    padding: var(--spacing-6);
    border-radius: 12px;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(20px);
    position: relative;
    overflow: hidden;
}

.service-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.03), transparent);
    transition: left 0.6s;
}

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

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.service-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-4);
}

.service-icon {
    font-size: var(--font-size-2xl);
    margin-right: var(--spacing-3);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.service-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.service-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
    line-height: 1.5;
}

.service-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.service-tech {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: 4px;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.service-price {
    font-weight: 700;
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

/* FAQ Section */
.faq-section {
    margin-bottom: var(--spacing-12);
}

.faq-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-12);
    color: var(--text-primary);
    position: relative;
}

.faq-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-6);
}

.faq-item {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.faq-item.animate {
    opacity: 1;
    transform: translateY(0);
}

.faq-item:hover {
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.faq-question {
    padding: var(--spacing-6);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.faq-question::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.05), transparent);
    transition: left 0.5s;
}

.faq-question:hover::before {
    left: 100%;
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-toggle {
    font-size: var(--font-size-lg);
    transition: transform var(--transition-fast);
    color: var(--primary-color);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-6) var(--spacing-6);
    color: var(--text-secondary);
    line-height: 1.6;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-top: 0;
}

/* Experience Section */
.experience {
    background-color: var(--bg-secondary);
    position: relative;
}

.experience::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 80% 20%, rgba(239, 68, 68, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-12);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.timeline-item.animate {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item:nth-child(odd) .timeline-content {
    left: 0;
    right: 55%;
}

.timeline-item:nth-child(even) .timeline-content {
    right: 0;
    left: 55%;
}

.timeline-content {
    position: relative;
    background-color: var(--bg-primary);
    padding: var(--spacing-6);
    border-radius: 12px;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.05), transparent);
    transition: left 0.8s;
}

.timeline-content:hover::before {
    left: 100%;
}

.timeline-content:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.timeline-marker {
    position: absolute;
    left: 50%;
    top: var(--spacing-6);
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: 4px solid var(--bg-primary);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 10;
    transition: all var(--transition-fast);
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4);
}

.timeline-item:hover .timeline-marker {
    transform: translateX(-50%) scale(1.2);
    box-shadow: 0 0 0 10px rgba(59, 130, 246, 0.2);
}

.company-logo {
    width: 50px;
    height: 50px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: all var(--transition-fast);
}

.timeline-content:hover .company-logo {
    transform: rotate(5deg) scale(1.1);
}

.job-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

.company-name {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.job-period {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-4);
}

.job-description {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Contact Section */
.contact {
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    max-width: 900px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background-color: var(--bg-secondary);
    border-radius: 8px;
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s;
}

.contact-item:hover::before {
    left: 100%;
}

.contact-item:hover {
    transform: translateX(8px) scale(1.02);
    box-shadow: var(--shadow-medium);
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all var(--transition-fast);
}

.contact-item:hover .contact-icon {
    transform: rotate(10deg) scale(1.1);
}

.contact-details h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.contact-details p {
    color: var(--text-secondary);
}

.contact-details a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-details a:hover {
    color: var(--secondary-color);
}

.contact-form {
    background-color: var(--bg-secondary);
    padding: var(--spacing-8);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(59, 130, 246, 0.02), transparent);
    animation: shimmer 4s ease-in-out infinite;
}

.form-group {
    margin-bottom: var(--spacing-6);
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 600;
    transition: color var(--transition-fast);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-4);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    transition: all var(--transition-fast);
    position: relative;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.form-group input:focus + label,
.form-group textarea:focus + label {
    color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    animation: fadeIn var(--transition-normal);
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-6);
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: 12px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideInUp var(--transition-normal);
    box-shadow: var(--shadow-heavy);
}

.modal-close {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    z-index: 10;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-secondary);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--error-color);
    color: white;
    transform: rotate(90deg) scale(1.1);
}

.modal-body {
    padding: var(--spacing-8);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-8) 0;
    text-align: center;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

/* Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes mouseWheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(16px);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-10px) rotate(2deg);
    }
    66% {
        transform: translateY(5px) rotate(-2deg);
    }
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

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

@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(59, 130, 246, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-12);
        text-align: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-12);
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        left: 50px;
        right: 0;
    }
    
    .timeline-marker {
        left: 20px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: left var(--transition-normal);
        border-top: 1px solid var(--border-color);
        backdrop-filter: blur(10px);
        gap: var(--spacing-6);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .technologies-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 var(--spacing-4);
    }
    
    .nav-container {
        padding: 0 var(--spacing-4);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-avatar {
        width: 200px;
        height: 200px;
    }
    
    .avatar-content {
        width: 180px;
        height: 180px;
        font-size: 80px;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-cta {
        flex-direction: column;
    }
}

/* Utility classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Glitch Effect */
.glitch {
    position: relative;
    display: inline-block;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    animation: glitch-1 0.5s infinite;
    color: #ff0000;
    z-index: -1;
}

.glitch::after {
    animation: glitch-2 0.5s infinite;
    color: #00ff00;
    z-index: -2;
}

@keyframes glitch-1 {
    0%, 14%, 15%, 49%, 50%, 99%, 100% {
        transform: translate(0);
    }
    15%, 49% {
        transform: translate(-2px, 2px);
    }
}

@keyframes glitch-2 {
    0%, 20%, 21%, 62%, 63%, 99%, 100% {
        transform: translate(0);
    }
    21%, 62% {
        transform: translate(2px, -2px);
    }
}