* { box-sizing: border-box; margin: 0; padding: 0; font-family: system-ui, -apple-system, sans-serif; }
body { background: #f8f9fa; color: #1a1a1a; line-height: 1.5; }
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #2563eb, #1d4ed8); }
.login-box { background: #fff; padding: 2rem; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); width: 100%; max-width: 400px; }
.login-box h2 { margin-bottom: 1.5rem; text-align: center; color: #2563eb; }
input, button { width: 100%; padding: 0.75rem; margin-bottom: 1rem; border: 1px solid #ccc; border-radius: 4px; font-size: 1rem; }
button { background: #2563eb; color: #fff; border: none; cursor: pointer; font-weight: 500; }
button:hover { background: #1d4ed8; }
.alert { padding: 0.75rem; border-radius: 4px; margin-bottom: 1rem; font-size: 0.9rem; }
.alert.error { background: #fee; color: #900; border: 1px solid #fcc; }
.back-link { text-align: center; margin-top: 1rem; }
.back-link a { color: #2563eb; text-decoration: none; }
.admin-container { max-width: 1100px; margin: 0 auto; padding: 1rem; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; padding-bottom: 1rem; border-bottom: 1px solid #ddd; }
.admin-content { display: grid; gap: 1.5rem; }
.card { background: #fff; padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 6px rgba(0,0,0,0.05); }
.link-card { display: flex; align-items: center; justify-content: center; text-decoration: none; color: inherit; font-weight: 500; transition: transform 0.2s, box-shadow 0.2s; }
.link-card:hover { transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,0,0,0.1); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.meta { color: #666; font-size: 0.85rem; margin-top: 0.5rem; }
.btn-danger { background: #dc2626; }
.btn-danger:hover { background: #b91c1c; }
@media (max-width: 600px) { .admin-header { flex-direction: column; align-items: flex-start; gap: 1rem; } }