:root {
    --bg-color: #000000;
    --grid-color: rgba(255, 255, 255, 0.05);
    --text-primary: #f0f0f0;
    --text-secondary: #888888;
    --accent-1: #00ff9d; /* Neon green/cyan */
    --border-color: #222222;
    --card-bg: rgba(10, 10, 10, 0.8);
    
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6, .logo, .btn-primary, .section-badge, .icon {
    font-family: var(--font-mono);
    text-transform: uppercase;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

.accent {
    color: var(--accent-1);
}

/* Background Grid */
.tech-grid-bg {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background-image: 
        linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
    pointer-events: none;
}

.tech-grid-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle at 50% 50%, transparent 0%, #000000 80%);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 8rem 0;
}

.border-top {
    border-top: 1px solid var(--border-color);
}

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

.section-badge {
    display: inline-block;
    color: var(--accent-1);
    font-size: 0.8rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 1.5rem 0;
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.cursor {
    display: inline-block;
    width: 10px;
    animation: blink 1s step-end infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.nav-links a:not(.btn-primary):hover {
    color: var(--accent-1);
}

/* Buttons */
.btn-primary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--accent-1);
    border: 1px solid var(--accent-1);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: var(--accent-1);
    color: #000;
    box-shadow: 0 0 15px rgba(0, 255, 157, 0.4);
}

.w-full {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
}

.hero-container {
    max-width: 900px;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 6rem);
    line-height: 1;
    margin-bottom: 1rem;
    letter-spacing: -2px;
}

.hero-tagline {
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-transform: none;
    font-weight: 500;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 700px;
    min-height: 80px; /* Prevent layout shift during typing */
    font-family: var(--font-mono);
}

/* Tech Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.tech-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 3px; height: 100%;
    background: var(--accent-1);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.3s ease;
}

.tech-card:hover {
    border-color: #444;
    background: #111;
}

.tech-card:hover::before {
    transform: scaleY(1);
}

.card-head {
    margin-bottom: 1.5rem;
}

.tech-card h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.tech-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.tech-card .icon {
    display: block;
    color: var(--accent-1);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.contact-email a {
    display: inline-block;
    font-family: var(--font-mono);
    color: var(--accent-1);
    margin-top: 1rem;
    font-size: 1.1rem;
}

.contact-email a:hover {
    text-shadow: 0 0 10px rgba(0, 255, 157, 0.5);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
    color: var(--accent-1);
    font-size: 0.85rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-1);
}

/* Footer */
footer {
    padding: 3rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

/* Responsive */
@media (max-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section {
        padding: 5rem 0;
    }
}