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

body {
    font-family: Segoe UI, Arial, sans-serif;
    background-color: #0f172a;
    color: #f8fafc;
    line-height: 1.7;
}

nav {
    background-color: #111827;
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid #334155;
}

nav a {
    color: #e2e8f0;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
}

nav a:hover {
    color: #38bdf8;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 40px;
}

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

.hero h1 {
    font-size: 3rem;
    color: #38bdf8;
}

.hero p {
    margin-top: 15px;
    color: #cbd5e1;
}

.section {
    margin-top: 50px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    gap: 20px;
    margin-top: 20px;
}

.card {
    background-color: #1e293b;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #334155;
}

.card h3 {
    color: #38bdf8;
    margin-bottom: 10px;
}

.hero-buttons {
    margin-top: 30px;
}

.button {
    display: inline-block;
    background-color: #38bdf8;
    color: #0f172a;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 8px;
    margin: 10px;
    font-weight: bold;
}

.button:hover {
    background-color: #0ea5e9;
}


footer {
    text-align: center;
    margin-top: 50px;
    color: #94a3b8;
}


.architecture-box {
    background-color: #111827;
    padding: 25px;
    border-radius: 12px;
    border: 1px solid #334155;
    margin-top: 20px;
}

.architecture-box pre {
    color: #38bdf8;
    font-size: 1rem;
}



.gallery-image {
    width: 100%;
    max-width: 1100px;
    display: block;
    margin: 20px auto;
    border-radius: 12px;
    border: 1px solid #334155;
}