:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --dark-bg: #0f0f14;
    --dark-bg-secondary: #1a1a24;
    --dark-bg-tertiary: #252534;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --border-color: #2a2a3a;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --zkm-orange: #FFA800;
    --goat-gray: #666666;
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 15, 20, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(15, 15, 20, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

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

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.2) 0%, transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    z-index: 1;
}

.badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #a5b4fc;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.btn {
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: var(--dark-bg-secondary);
    border-color: var(--primary-color);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-card {
    background: var(--dark-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.code-snippet {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 1rem;
    line-height: 1.6;
}

.code-keyword { color: #c084fc; }
.code-function { color: #60a5fa; }
.code-property { color: #86efac; }
.code-string { color: #fbbf24; }

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.about-card {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card-icon svg {
    stroke: white;
}

.about-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--dark-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: translateX(0);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.service-icon {
    position: relative;
    width: 50px;
    height: 50px;
    margin-bottom: 1.5rem;
}

.icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.2;
    border-radius: 10px;
}

.service-icon svg {
    position: relative;
    stroke: var(--primary-color);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Projects Section */
.projects {
    padding: 100px 0;
    background: var(--dark-bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 3rem;
}

.project-card {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.project-gradient {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.zkm-gradient {
    background: linear-gradient(135deg, #FFA800 0%, #ff6b00 100%);
}

.goat-gradient {
    background: linear-gradient(135deg, #666666 0%, #333333 100%);
}

.project-content {
    padding: 2rem;
}

.project-logo {
    margin-bottom: 1.5rem;
}

.zkm-logo, .goat-logo {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.zkm-logo {
    color: var(--zkm-orange);
}

.goat-logo {
    color: var(--text-primary);
}

.project-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.project-tagline {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    font-style: italic;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    padding: 4px 12px;
    background: var(--dark-bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.project-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.stat-item {
    display: flex;
    gap: 0.5rem;
}

.stat-label {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.stat-value {
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 600;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: gap 0.3s ease;
}

.project-link:hover {
    gap: 1rem;
}

/* Technology Section */
.technology {
    padding: 100px 0;
    background: var(--dark-bg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.tech-category {
    background: var(--dark-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.tech-category h3 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech-item {
    padding: 8px 16px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.tech-item:hover {
    border-color: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-2px);
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-method:hover {
    color: var(--text-primary);
}

.contact-method svg {
    stroke: var(--primary-color);
}

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

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--dark-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

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

.form-group label {
    position: absolute;
    left: 16px;
    top: 12px;
    color: var(--text-tertiary);
    transition: all 0.3s ease;
    pointer-events: none;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -10px;
    left: 12px;
    font-size: 0.75rem;
    background: var(--dark-bg);
    padding: 0 4px;
    color: var(--primary-color);
}

.btn-submit {
    width: 100%;
    justify-content: center;
}

/* Footer */
.footer {
    padding: 60px 0 20px;
    background: var(--dark-bg);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--dark-bg);
        flex-direction: column;
        justify-content: start;
        padding: 2rem;
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-visual {
        display: none;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}