* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { background-color: #f3f4f6; display: flex; justify-content: center; align-items: center; height: 100vh; color: #333; }

.login-container { background: white; padding: 30px; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
.login-container h2 { text-align: center; margin-bottom: 20px; color: #1f2937; }
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 500; }
.form-group input { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; }
button { width: 100%; padding: 10px; background: #2563eb; color: white; border: none; border-radius: 4px; font-size: 16px; cursor: pointer; }
button:hover { background: #1d4ed8; }
.error { background: #fee2e2; color: #dc2626; padding: 10px; border-radius: 4px; margin-bottom: 15px; text-align: center; font-size: 14px; }
.dashboard-container { width: 100%; max-width: 900px; padding: 24px; }
.dashboard-container header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.user-info { display: flex; align-items: center; gap: 10px; }
.btn-logout { color: #b91c1c; text-decoration: none; }
main { background: white; border-radius: 8px; padding: 24px; box-shadow: 0 4px 6px rgba(0,0,0,0.08); }
main h3 { margin-bottom: 12px; }
main p { margin-bottom: 10px; }