/* Global Reset & Base Styles */
:root {
    --bg-dark: #0f1115;
    --bg-card: #161b22;
    --bg-card-hover: #1c2128;
    --primary: #58a6ff; /* A nice blue accent */
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --gradient-1: linear-gradient(135deg, #1f242d 0%, #161b22 100%);
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.3);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
header {
    background-color: rgba(15, 17, 21, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

nav a {
    color: var(--text-secondary);
    margin-left: 32px;
    font-size: 0.95rem;
    font-weight: 500;
}

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

/* Hero Section */
#hero {
    padding: 120px 0 100px;
    text-align: center;
    background: radial-gradient(circle at top right, rgba(88, 166, 255, 0.05), transparent 40%),
                radial-gradient(circle at bottom left, rgba(88, 166, 255, 0.05), transparent 40%);
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(to right, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 60px;
}

.stats-grid {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Portfolio Section */
.portfolio-section {
    padding: 100px 0;
    background-color: #0d1117; 
}

.section-header {
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 32px;
}

.portfolio-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: block;
}

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

.card-content {
    padding: 32px;
}

.card-content h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.card-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.learn-more {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* Newsletter Section */
.newsletter-section {
    padding: 100px 0;
    border-top: 1px solid var(--border-color);
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-content h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.newsletter-content p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.newsletter-form {
    display: flex;
    gap: 12px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 16px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}

.newsletter-form button {
    padding: 12px 24px;
    border-radius: 6px;
    border: none;
    background-color: var(--primary);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}

.newsletter-form button:hover {
    background-color: #4a9eff;
}

/* Footer */
footer {
    background-color: #0d1117;
    border-top: 1px solid var(--border-color);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-brand h4 {
    margin-bottom: 16px;
    font-size: 1.2rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 300px;
}

.footer-links h4, .footer-connect h4, .footer-download h4 {
    margin-bottom: 24px;
    font-size: 1rem;
    color: var(--text-primary);
}

.footer-links ul, .footer-connect ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a, .footer-connect a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-links a:hover, .footer-connect a:hover {
    color: var(--primary);
}

.legal-links {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.legal-links a {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-download p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .stats-grid {
        gap: 30px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
}