:root {
    /* Color Variables */
    --color-primary: #7C3AED;
    --color-primary-dark: #6D28D9;
    --color-secondary: #10B981;
    --color-accent: #F59E0B;
    --color-dark: #1F2937;
    --color-darker: #111827;
    --color-light: #F9FAFB;
    --color-text: #374151;
    --color-text-light: #6B7280;
    /* Design System Colors */
    --color-bg-primary: #FCFCF9;
    --color-surface: #FFFFFE;
    --color-border: rgba(94, 82, 64, 0.2);
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
}

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

body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 2rem;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

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

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

/* Hero Section */
.hero {
    padding: 150px 2rem 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(circle at 20% 50%, rgba(124, 58, 237, 0.2) 0%, transparent 50%), radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.2) 0%, transparent 50%);
        animation: pulse 4s ease-in-out infinite;
    }

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    outline: none;
    font-size: 4rem;
    font-weight: 900;
    color: white;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    line-height: 1.1;
}

.hero .subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2.5rem;
    font-weight: 300;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.btn-primary {
    background: white;
    color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

    .btn-primary:hover {
        transform: translateY(-3px);
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    }

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    backdrop-filter: blur(10px);
}

    .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.3);
        transform: translateY(-3px);
    }

/* Content Sections */
.section {
    padding: 80px 2rem;
    background: white;
}

    .section:nth-child(even) {
        background: var(--color-light);
    }

.container {
    max-width: 1200px;
    margin: 0 auto;
}

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

    .section-header h2 {
        font-size: 3rem;
        font-weight: 800;
        color: var(--color-dark);
        margin-bottom: 1rem;
    }

    .section-header p {
        font-size: 1.25rem;
        color: var(--color-text-light);
        max-width: 700px;
        margin: 0 auto;
    }

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

    .service-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 5px;
        background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
        transform: scaleX(0);
        transition: transform 0.4s ease;
    }

    .service-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    }

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.75rem;
    color: var(--color-dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

.service-card p {
    color: var(--color-text-light);
    font-size: 1.1rem;
    line-height: 1.8;
}

.service-card ul {
    list-style: none;
    margin-top: 1.5rem;
    padding: 0;
}

    .service-card ul li {
        padding: 0.5rem 0;
        color: var(--color-text);
        position: relative;
        padding-left: 1.5rem;
    }

        .service-card ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-secondary);
            font-weight: bold;
        }

/* Tech Stack */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
}

.tech-badge {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: 0 5px 20px rgba(124, 58, 237, 0.3);
    transition: all 0.3s ease;
}

    .tech-badge:hover {
        transform: translateY(-5px) scale(1.05);
        box-shadow: 0 10px 30px rgba(124, 58, 237, 0.4);
    }

/* Process Timeline */
.timeline {
    position: relative;
    padding: 3rem 0;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    position: relative;
    padding: 0 0 4rem 4rem;
    margin-top: 2rem;
}

    .timeline-item::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: -2rem;
        width: 3px;
        background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
    }

    .timeline-item:last-child::before {
        display: none;
    }

.timeline-marker {
    position: absolute;
    left: -12px;
    top: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 5px solid white;
    box-shadow: 0 0 0 3px var(--color-primary);
}

.timeline-content h3 {
    font-size: 1.5rem;
    color: var(--color-dark);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* Contact Section */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-form {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    margin-top: 2rem;
}

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

    .form-group label {
        display: block;
        margin-bottom: 0.5rem;
        color: var(--color-dark);
        font-weight: 600;
    }

    .form-group input,
    .form-group textarea {
        width: 100%;
        padding: 1rem;
        border: 2px solid #e5e7eb;
        border-radius: 10px;
        font-size: 1rem;
        transition: border-color 0.3s ease;
        font-family: var(--font-primary);
    }

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

    .form-group textarea {
        min-height: 150px;
        resize: vertical;
    }

/* Footer */
footer {
    background: var(--color-darker);
    color: white;
    padding: 2rem;
    text-align: center;
}

    footer p {
        opacity: 0.8;
    }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .subtitle {
        font-size: 1.2rem;
    }

    .nav-links {
        display: none;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        padding-left: 3rem;
    }
}

/* Scroll Animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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