body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f5f5f5;
    color: #333;
}

.topbar {
    background: #1e88e5;
    color: #fff;
    padding: 12px 16px;
}

.topbar h1 {
    margin: 0;
    font-size: 18px;
}

.container {
    padding: 16px;
}

.card {
    background: #fff;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.btn {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    border: 1px solid #1e88e5;
    color: #1e88e5;
    margin-right: 8px;
}

.btn-primary {
    background: #1e88e5;
    color: #fff;
}

.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: #e3f2fd;
}

.login-container {
    background: #fff;
    padding: 24px;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    width: 100%;
    max-width: 360px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.login-form input {
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 14px;
}

.app-title {
    text-align: center;
    margin-top: 0;
    margin-bottom: 16px;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    padding: 8px;
    border-radius: 6px;
    margin-bottom: 8px;
    font-size: 13px;
}