:root {
    --bg-color: #050505;
    --bg-alt: #0a0a0a;
    --text-color: #f5f5f5;
    --text-muted: #a0a0a0;
    --accent-color: #00f2ff;
    --accent-glow: rgba(0, 242, 255, 0.3);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --container-width: 1100px;
    --heading-font: 'Outfit', sans-serif;
    --body-font: 'Inter', sans-serif;
}

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

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.container.narrow {
    max-width: 700px;
}

/* Typography */
h1, h2, h3 {
    font-family: var(--heading-font);
}

h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

h1 span, h2 span {
    color: var(--accent-color);
    text-shadow: 0 0 20px var(--accent-glow);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.center {
    text-align: center;
}

/* Layout Utilities */
.flex-row-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.grid-two-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.section {
    padding: 8rem 0;
}

.bg-alt {
    background-color: var(--bg-alt);
}

.bg-alt-dark {
    background-color: #080808;
}

/* Navigation */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -1px;
}

.logo span {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-color);
}

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

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    z-index: -1;
    filter: blur(50px);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    font-family: var(--body-font);
}

.btn-primary {
    background-color: var(--accent-color);
    color: #000;
    border: none;
}

.btn-primary:hover {
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    margin-left: 1rem;
}

.btn-outline:hover {
    background: var(--glass-bg);
    border-color: var(--accent-color);
}

.full-width {
    width: 100%;
}

/* Concept Section & Cards */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(5px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
}

.concept-card {
    padding: 2rem;
}

.code-snippet {
    background: #000;
    padding: 2rem;
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.9rem;
}

.keyword { color: #ff79c6; }
.class { color: #50fa7b; }
.function { color: #8be9fd; }
.variable { color: #bd93f9; }
.constant { color: #f1fa8c; }

.features-list {
    list-style: none;
    margin-top: 2rem;
}

.features-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.features-list li::before {
    content: "→";
    color: var(--accent-color);
    margin-right: 1rem;
    font-weight: bold;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    padding: 3rem 2rem;
    text-align: center;
    transition: transform 0.3s;
}

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

.service-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    display: block;
    margin-bottom: 1.5rem;
    font-style: normal;
}

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

.service-card p {
    color: var(--text-muted);
}

/* Form */
.glass-form-container {
    padding: 4rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
}

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

input, textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    color: var(--text-color);
    font-family: var(--body-font);
}

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

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

footer p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Animations */
.fade-in {
    animation: fadeIn 1s ease-out forwards;
}

.fade-in-delayed {
    opacity: 0;
    animation: fadeIn 1s ease-out 0.5s forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 900px) {
    .grid-two-cols {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 3rem;
    }
}