:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", system-ui, sans-serif;
}

body {
    background: var(--bg);
    color: var(--text);
}

header {
    background: white;
    padding: 16px 40px;
    border-bottom: 1px solid var(--border);
}

main {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
}

footer {
    text-align: center;
    padding: 20px;
    color: var(--muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.event-card {
    background: var(--card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

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

.event-card .content {
    padding: 16px;
}

.event-meta {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 6px;
}

.btn {
    background: var(--primary);
    color: white;
    padding: 10px 16px;
    border-radius: 8px;
    text-decoration: none;
    display: inline-block;
}

form {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    max-width: 500px;
}

input, textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
}