:root {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #f8fafc;
    --accent: #38bdf8;
    --border: #334155;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background: #1e293b;
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 15px;
    background: #1e293b;
    border-bottom: 1px solid var(--border);
}

nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: bold;
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding: 30px;
}

.card {
    background: var(--card);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.p-15 {
    padding: 15px;
}

.btn {
    display: block;
    text-align: center;
    background: var(--accent);
    color: #0f172a;
    padding: 10px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    margin-top: 10px;
}

footer {
    text-align: center;
    padding: 40px;
    border-top: 1px solid var(--border);
}