html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    background: #020817;
    color: white;
    font-family: Arial, sans-serif;
}


.demo-banner {
    background: #2563eb;
    color: white;
    text-align:center;
    padding: 14px;
    font-weight: bold;
}

.demo-hero {
    padding: 120px 20px 80px;
    text-align: center;
}

.demo-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.demo-hero p {
    color: rgba(255, 255, 255, 0.75);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.demo-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
}

.demo-section h2 {
    margin-bottom: 30px;
    font-size: 2rem;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.demo-card {
    background: rgba(16, 22, 36, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 30px;
}

.demo-card h3 {
    margin-bottom: 15px;
}

.demo-card p {
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.6;
}

.demo-cta {
    text-align: center;
    padding: 100px 20px;
}

.demo-cta h2 {
    margin-bottom: 25px;
    font-size: 2.5rem;
}

.demo-button {
    display: inline-block;
    padding: 14px 28px;
    background: #2563eb;
    color: white;
    border-radius: 12px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s ease;
}

.demo-button:hover {
    background: #1d4ed8;
}

.back-button {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    padding: 12px 20px;
    background: rgba(16, 22, 36, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    color: white;
    text-decoration: none;
    font-weight: bold;
    backdrop-filter: blur(10px);
    transition: 0.3s ease;
}

.back-button:hover {
    background: #2563eb;
    transform: translateY(-2px);
}