/* ========================================
   CSS Variables & Design Tokens
   ======================================== */
:root {
    /* Colors */
    --color-bg-primary: #000000;
    --color-bg-secondary: #0a0a0a;
    --color-bg-tertiary: #111111;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-accent-primary: #00ff88;
    --color-accent-secondary: #00ccff;
    --color-accent-gradient: linear-gradient(135deg, #00ff88 0%, #00ccff 100%);
    --color-accent-glow: rgba(0, 255, 136, 0.3);
    --color-border: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-primary: 'Orbitron', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-glow: 0 0 20px rgba(0, 255, 136, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

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

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

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background-color: rgba(0, 0, 0, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo-text {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 2px;
    color: var(--color-text-primary);
}

.logo-accent {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    letter-spacing: 1px;
    transition: var(--transition-fast);
    position: relative;
}

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--color-text-primary);
    transition: var(--transition-normal);
}

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

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

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

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #00ff88, transparent);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #00ccff, transparent);
    bottom: 20%;
    right: 15%;
    animation-delay: 2s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, #ff00ff, transparent);
    top: 50%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-30px, 30px) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: 900;
    letter-spacing: 8px;
    margin-bottom: var(--spacing-sm);
}

.glitch {
    position: relative;
    display: inline-block;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glitch 3s infinite;
}

@keyframes glitch {
    0%, 90%, 100% {
        transform: translate(0);
    }
    92% {
        transform: translate(-2px, 2px);
    }
    94% {
        transform: translate(2px, -2px);
    }
    96% {
        transform: translate(-2px, -2px);
    }
    98% {
        transform: translate(2px, 2px);
    }
}

.hero-subtitle {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    letter-spacing: 4px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    letter-spacing: 2px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent-gradient);
    opacity: 0;
    transition: var(--transition-normal);
}

.btn span,
.btn svg {
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
}

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

.btn-secondary:hover {
    background: rgba(0, 255, 136, 0.1);
    transform: translateY(-2px);
}

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

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-xl);
}

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

.stat-number {
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 900;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 0.5rem;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent-primary), transparent);
    animation: scrollMove 2s ease-in-out infinite;
}

@keyframes scrollMove {
    0%, 100% { transform: translateY(0); opacity: 0; }
    50% { transform: translateY(20px); opacity: 1; }
}

/* ========================================
   Section Styles
   ======================================== */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.section-number {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-accent-primary);
    letter-spacing: 2px;
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    letter-spacing: 4px;
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-heading {
    font-family: var(--font-primary);
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.about-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.about-features {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: var(--transition-normal);
}

.feature-item:hover {
    background: rgba(0, 255, 136, 0.05);
    border-color: var(--color-accent-primary);
    transform: translateX(5px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    border-radius: 8px;
    flex-shrink: 0;
}

.feature-icon svg {
    color: var(--color-bg-primary);
}

.feature-text h4 {
    font-family: var(--font-primary);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

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

.about-visual {
    position: relative;
}

.visual-card {
    position: relative;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    overflow: hidden;
}

.card-glow {
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.1), transparent 50%);
    animation: rotate 10s linear infinite;
}

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

.code-snippet {
    position: relative;
    z-index: 1;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.8;
}

.code-line {
    margin: 0.25rem 0;
}

.code-keyword {
    color: #ff79c6;
}

.code-var {
    color: #50fa7b;
}

.code-string {
    color: #f1fa8c;
}

.code-function {
    color: #8be9fd;
}

/* ========================================
   Services Section
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    position: relative;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: var(--transition-normal);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-accent-gradient);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-number {
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.05);
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
}

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--color-accent-primary);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-primary);
}

.service-title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.service-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.service-list {
    list-style: none;
    padding: 0;
}

.service-list li {
    padding: 0.5rem 0;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    position: relative;
    padding-left: 1.5rem;
}

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

/* ========================================
   Portfolio Section
   ======================================== */
.portfolio {
    background-color: var(--color-bg-secondary);
}

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

.portfolio-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.portfolio-image {
    position: relative;
    width: 100%;
    height: 100%;
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
    opacity: 0;
    transition: var(--transition-normal);
}

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

.portfolio-overlay h3 {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.portfolio-overlay p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.portfolio-btn {
    align-self: flex-start;
    padding: 0.5rem 1.5rem;
    background: transparent;
    color: var(--color-accent-primary);
    border: 1px solid var(--color-accent-primary);
    font-family: var(--font-primary);
    font-size: 0.75rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition-normal);
}

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

/* ========================================
   Contact Section
   ======================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-heading {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.contact-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

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

.contact-detail-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--color-accent-primary);
    border-radius: 8px;
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.25rem;
}

.contact-value {
    font-family: var(--font-primary);
    font-size: 1rem;
}

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

.form-group {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 1rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text-primary);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: var(--transition-normal);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.form-label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: var(--color-text-secondary);
    font-size: 1rem;
    transition: var(--transition-fast);
    pointer-events: none;
}

.form-input:focus + .form-label,
.form-input:not(:placeholder-shown) + .form-label {
    top: -0.5rem;
    left: 0.75rem;
    font-size: 0.75rem;
    background: var(--color-bg-primary);
    padding: 0 0.5rem;
    color: var(--color-accent-primary);
}

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

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

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-column h4 {
    font-family: var(--font-primary);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

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

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: rgba(0, 0, 0, 0.98);
        width: 100%;
        padding: var(--spacing-md);
        transition: var(--transition-normal);
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
        letter-spacing: 4px;
    }
    
    .about-heading,
    .contact-heading {
        font-size: 1.5rem;
    }
}